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implot/implot.cpp
Josh Pieper 5eb4b71384 Support multiple Y axes simultaneously 
This allows up to 3 Y axes to be used, one on the left side, and up to
2 on the right.  To use multiple axes, one of the `ImPlotFlags_Y2Axis`
or `ImPlotFlags_Y3Axis` must be passed to `BeginPlot`.  Then, before
each Plot call, SetPlotYAxis may be used to set that plot on an
alternate axis.

An extra line and ticks are rendered off to the right if all 3 axes
are configured (although those ticks are always only 5 long,
regardless of major status).  Each of the axes, when present, has a
(possibly invisible if ticks and labels are disabled) hit target that
can be used to scroll and scale that axis independently.

Some other changes were required to make this happen:
 * Queries are now only in pixel coordinates
 * ImPlotRange has been renamed to ImPlotBounds (and correspondingly
   GetPlotRange is now GetPlotBounds)
 * All APIs which allow querying values in plot coordinates now have
   an optional "y_axis" argument, which can be -1 to use the currently
   selected axis, or non-negative to pick a specific axes.
 * BeginPlot used to lock all flags on the first call.  Now it only
   locks the axis flags, and not the primary plot flags.
 * The mouseover text now renders the 2nd and 3rd axis in parenthesis.
2020-05-10 21:27:26 -04:00

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// MIT License
// Copyright (c) 2020 Evan Pezent
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.
// ImPlot v0.1 WIP
#ifdef _MSC_VER
#pragma warning (disable: 4996) // 'This function or variable may be unsafe': strcpy, strdup, sprintf, vsnprintf, sscanf, fopen
#endif
#ifndef IMGUI_DEFINE_MATH_OPERATORS
#define IMGUI_DEFINE_MATH_OPERATORS
#endif
#include <implot.h>
#include <imgui_internal.h>
#define IM_NORMALIZE2F_OVER_ZERO(VX, VY) \
{ \
float d2 = VX * VX + VY * VY; \
if (d2 > 0.0f) { \
float inv_len = 1.0f / ImSqrt(d2); \
VX *= inv_len; \
VY *= inv_len; \
} \
}
// Special Color used to specific that a plot item color should set determined automatically.
#define IM_COL_AUTO ImVec4(0,0,0,-1)
ImPlotStyle::ImPlotStyle() {
LineWeight = 1;
Marker = ImMarker_None;
MarkerSize = 5;
MarkerWeight = 1;
ErrorBarSize = 5;
ErrorBarWeight = 1.5;
DigitalBitHeight = 8;
Colors[ImPlotCol_Line] = IM_COL_AUTO;
Colors[ImPlotCol_Fill] = IM_COL_AUTO;
Colors[ImPlotCol_MarkerOutline] = IM_COL_AUTO;
Colors[ImPlotCol_MarkerFill] = IM_COL_AUTO;
Colors[ImPlotCol_ErrorBar] = IM_COL_AUTO;
Colors[ImPlotCol_FrameBg] = IM_COL_AUTO;
Colors[ImPlotCol_PlotBg] = IM_COL_AUTO;
Colors[ImPlotCol_PlotBorder] = IM_COL_AUTO;
Colors[ImPlotCol_XAxis] = IM_COL_AUTO;
Colors[ImPlotCol_YAxis] = IM_COL_AUTO;
Colors[ImPlotCol_Y2Axis] = IM_COL_AUTO;
Colors[ImPlotCol_Y3Axis] = IM_COL_AUTO;
Colors[ImPlotCol_Selection] = ImVec4(1,1,0,1);
Colors[ImPlotCol_Query] = ImVec4(0,1,0,1);
}
ImPlotRange::ImPlotRange() : Min(NAN), Max(NAN) {}
bool ImPlotRange::Contains(float v) const {
return v >= Min && v <= Max;
}
float ImPlotRange::Size() const {
return Max - Min;
}
ImPlotBounds::ImPlotBounds() {}
bool ImPlotBounds::Contains(const ImVec2& p) const {
return X.Contains(p.x) && Y.Contains(p.y);
}
namespace ImGui {
namespace {
#define MAX_Y_AXES 3
//-----------------------------------------------------------------------------
// Private Utils
//-----------------------------------------------------------------------------
/// Returns true if a flag is set
template <typename TSet, typename TFlag>
inline bool HasFlag(TSet set, TFlag flag) {
return (set & flag) == flag;
}
/// Flips a flag in a flagset
template <typename TSet, typename TFlag>
inline void FlipFlag(TSet& set, TFlag flag) {
HasFlag(set, flag) ? set &= ~flag : set |= flag;
}
/// Linearly remaps float x from [x0 x1] to [y0 y1].
inline float Remap(float x, float x0, float x1, float y0, float y1) {
return y0 + (x - x0) * (y1 - y0) / (x1 - x0);
}
/// Turns NANs to 0s
inline float ConstrainNan(float val) {
return isnan(val) ? 0 : val;
}
/// Turns INFINITYs to FLT_MAXs
inline float ConstrainInf(float val) {
return val == INFINITY ? FLT_MAX : val == -INFINITY ? -FLT_MAX : val;
}
/// Turns numbers less than or equal to 0 to 0.001 (sort of arbitrary, is there a better way?)
inline float ConstrainLog(float val) {
return val <= 0 ? 0.001f : val;
}
/// Returns true if val is NAN or INFINITY
inline bool NanOrInf(float val) {
return val == INFINITY || val == -INFINITY || isnan(val);
}
/// Utility function to that rounds x to powers of 2,5 and 10 for generating axis labels
/// Taken from Graphics Gems 1 Chapter 11.2, "Nice Numbers for Graph Labels"
inline double NiceNum(double x, bool round) {
double f; /* fractional part of x */
double nf; /* nice, rounded fraction */
int expv = (int)floor(log10(x));
f = x / ImPow(10.0, (double)expv); /* between 1 and 10 */
if (round)
if (f < 1.5)
nf = 1;
else if (f < 3)
nf = 2;
else if (f < 7)
nf = 5;
else
nf = 10;
else if (f <= 1)
nf = 1;
else if (f <= 2)
nf = 2;
else if (f <= 5)
nf = 5;
else
nf = 10;
return nf * ImPow(10.0, expv);
}
/// Draws vertical text. The position is the bottom left of the text rect.
inline void AddTextVertical(ImDrawList *DrawList, const char *text, ImVec2 pos, ImU32 text_color) {
pos.x = IM_ROUND(pos.x);
pos.y = IM_ROUND(pos.y);
ImFont * font = GImGui->Font;
const ImFontGlyph *glyph;
char c;
while ((c = *text++)) {
glyph = font->FindGlyph(c);
if (!glyph)
continue;
DrawList->PrimReserve(6, 4);
DrawList->PrimQuadUV(
pos + ImVec2(glyph->Y0, -glyph->X0), pos + ImVec2(glyph->Y0, -glyph->X1),
pos + ImVec2(glyph->Y1, -glyph->X1), pos + ImVec2(glyph->Y1, -glyph->X0),
ImVec2(glyph->U0, glyph->V0), ImVec2(glyph->U1, glyph->V0),
ImVec2(glyph->U1, glyph->V1), ImVec2(glyph->U0, glyph->V1), text_color);
pos.y -= glyph->AdvanceX;
}
}
/// Calculates the size of vertical text
inline ImVec2 CalcTextSizeVertical(const char *text) {
ImVec2 sz = CalcTextSize(text);
return ImVec2(sz.y, sz.x);
}
} // private namespace
//-----------------------------------------------------------------------------
// Forwards
//-----------------------------------------------------------------------------
ImVec4 NextColor();
//-----------------------------------------------------------------------------
// Structs
//-----------------------------------------------------------------------------
/// Tick mark info
struct ImTick {
ImTick(double value, bool major, bool render_label = true) {
PlotPos = value;
Major = major;
RenderLabel = render_label;
}
double PlotPos;
float PixelPos;
bool Major;
ImVec2 Size;
int TextOffset;
bool RenderLabel;
};
struct ImPlotItem {
ImPlotItem() {
Show = true;
Highlight = false;
Color = NextColor();
NameOffset = -1;
ID = 0;
}
~ImPlotItem() { ID = 0; }
bool Show;
bool Highlight;
ImVec4 Color;
int NameOffset;
ImGuiID ID;
};
/// Plot axis structure. You shouldn't need to construct this!
struct ImPlotAxis {
ImPlotAxis() {
Dragging = false;
Range.Min = 0;
Range.Max = 1;
Divisions = 3;
Subdivisions = 10;
Flags = ImAxisFlags_Default;
}
bool Dragging;
ImPlotRange Range;
int Divisions;
int Subdivisions;
ImAxisFlags Flags;
};
/// Holds Plot state information that must persist between frames
struct ImPlot {
ImPlot() {
Selecting = Querying = Queried = DraggingQuery = false;
SelectStart = QueryStart = ImVec2(0,0);
Flags = ImPlotFlags_Default;
ColorIdx = 0;
CurrentYAxis = 0;
}
ImPool<ImPlotItem> Items;
ImRect BB_Legend;
bool Selecting;
ImVec2 SelectStart;
bool Querying;
bool Queried;
ImVec2 QueryStart;
ImRect QueryRect; // relative to BB_grid!!
bool DraggingQuery;
ImPlotAxis XAxis;
ImPlotAxis YAxis[MAX_Y_AXES];
ImPlotFlags Flags;
int ColorIdx;
int CurrentYAxis;
};
struct ImNextPlotData {
ImNextPlotData() : HasXBounds{}, HasYBounds{} {}
ImGuiCond XBoundsCond;
ImGuiCond YBoundsCond[MAX_Y_AXES];
bool HasXBounds;
bool HasYBounds[MAX_Y_AXES];
ImPlotRange X;
ImPlotRange Y[MAX_Y_AXES];
};
/// Holds Plot state information that must persist only between calls to BeginPlot()/EndPlot()
struct ImPlotContext {
ImPlotContext() : RenderX(), RenderY() {
CurrentPlot = NULL;
FitThisFrame = FitX = false;
RestorePlotPalette();
}
/// ALl Plots
ImPool<ImPlot> Plots;
/// Current Plot
ImPlot* CurrentPlot;
// Legend
ImVector<int> LegendIndices;
ImGuiTextBuffer LegendLabels;
// Bounding regions
ImRect BB_Frame;
ImRect BB_Canvas;
ImRect BB_Grid;
// Hover states
bool Hov_Frame;
bool Hov_Grid;
// Cached Colors
ImU32 Col_Frame, Col_Bg, Col_Border,
Col_Txt, Col_TxtDis,
Col_SlctBg, Col_SlctBd,
Col_QryBg, Col_QryBd;
struct AxisColor {
AxisColor() : Major(), Minor(), Txt() {}
ImU32 Major, Minor, Txt;
};
AxisColor Col_X;
AxisColor Col_Y[MAX_Y_AXES];
// Tick marks
ImVector<ImTick> XTicks, YTicks[MAX_Y_AXES];
ImGuiTextBuffer XTickLabels, YTickLabels[MAX_Y_AXES];
float AxisLabelReference[MAX_Y_AXES];
// Transformation cache
ImRect PixelRange[MAX_Y_AXES];
// linear scale (slope)
float Mx;
float My[MAX_Y_AXES];
// log scale denominator
float LogDenX;
float LogDenY[MAX_Y_AXES];
// Data extents
ImPlotRange ExtentsX;
ImPlotRange ExtentsY[MAX_Y_AXES];
bool FitThisFrame; bool FitX;
bool FitY[MAX_Y_AXES] = {};
int VisibleItemCount;
// Render flags
bool RenderX, RenderY[MAX_Y_AXES];
// Mouse pos
ImVec2 LastMousePos[MAX_Y_AXES];
// Style
ImVector<ImVec4> ColorMap;
ImPlotStyle Style;
ImVector<ImGuiColorMod> ColorModifiers; // Stack for PushStyleColor()/PopStyleColor()
ImVector<ImGuiStyleMod> StyleModifiers; // Stack for PushStyleVar()/PopStyleVar()
ImNextPlotData NextPlotData;
// Digital plot item count
int DigitalPlotItemCnt;
};
/// Global plot context
static ImPlotContext gp;
//-----------------------------------------------------------------------------
// Utils
//-----------------------------------------------------------------------------
/// Returns the next unused default plot color
ImVec4 NextColor() {
ImVec4 col = gp.ColorMap[gp.CurrentPlot->ColorIdx % gp.ColorMap.size()];
gp.CurrentPlot->ColorIdx++;
return col;
}
inline void FitPoint(const ImVec2& p) {
ImPlotRange* extents_x = &gp.ExtentsX;
ImPlotRange* extents_y = &gp.ExtentsY[gp.CurrentPlot->CurrentYAxis];
if (!NanOrInf(p.x)) {
extents_x->Min = p.x < extents_x->Min ? p.x : extents_x->Min;
extents_x->Max = p.x > extents_x->Max ? p.x : extents_x->Max;
}
if (!NanOrInf(p.y)) {
extents_y->Min = p.y < extents_y->Min ? p.y : extents_y->Min;
extents_y->Max = p.y > extents_y->Max ? p.y : extents_y->Max;
}
}
//-----------------------------------------------------------------------------
// Coordinate Transforms
//-----------------------------------------------------------------------------
inline void UpdateTransformCache() {
// get pixels for transforms
for (int i = 0; i < MAX_Y_AXES; i++) {
gp.PixelRange[i] = ImRect(HasFlag(gp.CurrentPlot->XAxis.Flags, ImAxisFlags_Invert) ? gp.BB_Grid.Max.x : gp.BB_Grid.Min.x,
HasFlag(gp.CurrentPlot->YAxis[i].Flags, ImAxisFlags_Invert) ? gp.BB_Grid.Min.y : gp.BB_Grid.Max.y,
HasFlag(gp.CurrentPlot->XAxis.Flags, ImAxisFlags_Invert) ? gp.BB_Grid.Min.x : gp.BB_Grid.Max.x,
HasFlag(gp.CurrentPlot->YAxis[i].Flags, ImAxisFlags_Invert) ? gp.BB_Grid.Max.y : gp.BB_Grid.Min.y);
gp.My[i] = (gp.PixelRange[i].Max.y - gp.PixelRange[i].Min.y) / gp.CurrentPlot->YAxis[i].Range.Size();
}
gp.LogDenX = log10(gp.CurrentPlot->XAxis.Range.Max / gp.CurrentPlot->XAxis.Range.Min);
for (int i = 0; i < MAX_Y_AXES; i++) {
gp.LogDenY[i] = log10(gp.CurrentPlot->YAxis[i].Range.Max / gp.CurrentPlot->YAxis[i].Range.Min);
}
gp.Mx = (gp.PixelRange[0].Max.x - gp.PixelRange[0].Min.x) / gp.CurrentPlot->XAxis.Range.Size();
}
inline ImVec2 PixelsToPlot(float x, float y, int y_axis_in = -1) {
IM_ASSERT_USER_ERROR(gp.CurrentPlot != NULL, "PixelsToPlot() Needs to be called between BeginPlot() and EndPlot()!");
const int y_axis = y_axis_in >= 0 ? y_axis_in : gp.CurrentPlot->CurrentYAxis;
ImVec2 plt;
plt.x = (x - gp.PixelRange[y_axis].Min.x) / gp.Mx + gp.CurrentPlot->XAxis.Range.Min;
plt.y = (y - gp.PixelRange[y_axis].Min.y) / gp.My[y_axis] + gp.CurrentPlot->YAxis[y_axis].Range.Min;
if (HasFlag(gp.CurrentPlot->XAxis.Flags, ImAxisFlags_LogScale)) {
float t = (plt.x - gp.CurrentPlot->XAxis.Range.Min) / gp.CurrentPlot->XAxis.Range.Size();
plt.x = pow(10.0f, t * gp.LogDenX) * gp.CurrentPlot->XAxis.Range.Min;
}
if (HasFlag(gp.CurrentPlot->YAxis[y_axis].Flags, ImAxisFlags_LogScale)) {
float t = (plt.y - gp.CurrentPlot->YAxis[y_axis].Range.Min) / gp.CurrentPlot->YAxis[y_axis].Range.Size();
plt.y = pow(10.0f, t * gp.LogDenY[y_axis]) * gp.CurrentPlot->YAxis[y_axis].Range.Min;
}
return plt;
}
inline ImVec2 PlotToPixels(float x, float y, int y_axis_in = -1) {
IM_ASSERT_USER_ERROR(gp.CurrentPlot != NULL, "PlotToPixels() Needs to be called between BeginPlot() and EndPlot()!");
const int y_axis = y_axis_in >= 0 ? y_axis_in : gp.CurrentPlot->CurrentYAxis;
ImVec2 pix;
if (HasFlag(gp.CurrentPlot->XAxis.Flags, ImAxisFlags_LogScale)) {
float t = log10(x / gp.CurrentPlot->XAxis.Range.Min) / gp.LogDenX;
x = ImLerp(gp.CurrentPlot->XAxis.Range.Min, gp.CurrentPlot->XAxis.Range.Max, t);
}
if (HasFlag(gp.CurrentPlot->YAxis[y_axis].Flags, ImAxisFlags_LogScale)) {
float t = log10(y / gp.CurrentPlot->YAxis[y_axis].Range.Min) / gp.LogDenY[y_axis];
y = ImLerp(gp.CurrentPlot->YAxis[y_axis].Range.Min, gp.CurrentPlot->YAxis[y_axis].Range.Max, t);
}
pix.x = gp.PixelRange[y_axis].Min.x + gp.Mx * (x - gp.CurrentPlot->XAxis.Range.Min);
pix.y = gp.PixelRange[y_axis].Min.y + gp.My[y_axis] * (y - gp.CurrentPlot->YAxis[y_axis].Range.Min);
return pix;
}
ImVec2 PixelsToPlot(const ImVec2& pix, int y_axis) {
return PixelsToPlot(pix.x, pix.y, y_axis);
}
ImVec2 PlotToPixels(const ImVec2& plt, int y_axis) {
return PlotToPixels(plt.x, plt.y, y_axis);
}
struct Plt2PixLinLin {
Plt2PixLinLin(int y_axis_in) : y_axis(y_axis_in) {}
ImVec2 operator()(const ImVec2& plt) { return (*this)(plt.x, plt.y); }
ImVec2 operator()(float x, float y) {
return { gp.PixelRange[y_axis].Min.x + gp.Mx * (x - gp.CurrentPlot->XAxis.Range.Min),
gp.PixelRange[y_axis].Min.y + gp.My[y_axis] * (y - gp.CurrentPlot->YAxis[y_axis].Range.Min) };
}
int y_axis;
};
struct Plt2PixLogLin {
Plt2PixLogLin(int y_axis_in) : y_axis(y_axis_in) {}
ImVec2 operator()(const ImVec2& plt) { return (*this)(plt.x, plt.y); }
ImVec2 operator()(float x, float y) {
float t = log10(x / gp.CurrentPlot->XAxis.Range.Min) / gp.LogDenX;
x = ImLerp(gp.CurrentPlot->XAxis.Range.Min, gp.CurrentPlot->XAxis.Range.Max, t);
return { gp.PixelRange[y_axis].Min.x + gp.Mx * (x - gp.CurrentPlot->XAxis.Range.Min),
gp.PixelRange[y_axis].Min.y + gp.My[y_axis] * (y - gp.CurrentPlot->YAxis[y_axis].Range.Min) };
}
int y_axis;
};
struct Plt2PixLinLog {
Plt2PixLinLog(int y_axis_in) : y_axis(y_axis_in) {}
ImVec2 operator()(const ImVec2& plt) { return (*this)(plt.x, plt.y); }
ImVec2 operator()(float x, float y) {
float t = log10(y / gp.CurrentPlot->YAxis[y_axis].Range.Min) / gp.LogDenY[y_axis];
y = ImLerp(gp.CurrentPlot->YAxis[y_axis].Range.Min, gp.CurrentPlot->YAxis[y_axis].Range.Max, t);
return { gp.PixelRange[y_axis].Min.x + gp.Mx * (x - gp.CurrentPlot->XAxis.Range.Min),
gp.PixelRange[y_axis].Min.y + gp.My[y_axis] * (y - gp.CurrentPlot->YAxis[y_axis].Range.Min) };
}
int y_axis;
};
struct Plt2PixLogLog {
Plt2PixLogLog(int y_axis_in) : y_axis(y_axis_in) {}
ImVec2 operator()(const ImVec2& plt) { return (*this)(plt.x, plt.y); }
ImVec2 operator()(float x, float y) {
float t = log10(x / gp.CurrentPlot->XAxis.Range.Min) / gp.LogDenX;
x = ImLerp(gp.CurrentPlot->XAxis.Range.Min, gp.CurrentPlot->XAxis.Range.Max, t);
t = log10(y / gp.CurrentPlot->YAxis[y_axis].Range.Min) / gp.LogDenY[y_axis];
y = ImLerp(gp.CurrentPlot->YAxis[y_axis].Range.Min, gp.CurrentPlot->YAxis[y_axis].Range.Max, t);
return { gp.PixelRange[y_axis].Min.x + gp.Mx * (x - gp.CurrentPlot->XAxis.Range.Min),
gp.PixelRange[y_axis].Min.y + gp.My[y_axis] * (y - gp.CurrentPlot->YAxis[y_axis].Range.Min) };
}
int y_axis;
};
//-----------------------------------------------------------------------------
// Legend Utils
//-----------------------------------------------------------------------------
ImPlotItem* RegisterItem(const char* label_id) {
ImGuiID id = ImGui::GetID(label_id);
ImPlotItem* item = gp.CurrentPlot->Items.GetOrAddByKey(id);
int idx = gp.CurrentPlot->Items.GetIndex(item);
item->ID = id;
gp.LegendIndices.push_back(idx);
item->NameOffset = gp.LegendLabels.size();
gp.LegendLabels.append(label_id, label_id + strlen(label_id) + 1);
if (item->Show)
gp.VisibleItemCount++;
return item;
}
int GetLegendCount() {
return gp.LegendIndices.size();
}
ImPlotItem* GetLegendItem(int i) {
return gp.CurrentPlot->Items.GetByIndex(gp.LegendIndices[i]);
}
const char* GetLegendLabel(int i) {
ImPlotItem* item = gp.CurrentPlot->Items.GetByIndex(gp.LegendIndices[i]);
IM_ASSERT(item->NameOffset != -1 && item->NameOffset < gp.LegendLabels.Buf.Size);
return gp.LegendLabels.Buf.Data + item->NameOffset;
}
//-----------------------------------------------------------------------------
// Tick Utils
//-----------------------------------------------------------------------------
inline void GetTicks(const ImPlotRange& scale, int nMajor, int nMinor, bool logscale, ImVector<ImTick> &out) {
out.shrink(0);
if (logscale) {
if (scale.Min <= 0 || scale.Max <= 0)
return;
int exp_min = (int)(ImFloor(log10(scale.Min)));
int exp_max = (int)(ImCeil(log10(scale.Max)));
for (int e = exp_min - 1; e < exp_max + 1; ++e) {
double major1 = ImPow(10, (double)(e));
double major2 = ImPow(10, (double)(e + 1));
double interval = (major2 - major1) / 9;
if (major1 >= (scale.Min - FLT_EPSILON) && major1 <= (scale.Max + FLT_EPSILON))
out.push_back(ImTick(major1, true));
for (int i = 1; i < 9; ++i) {
double minor = major1 + i * interval;
if (minor >= (scale.Min - FLT_EPSILON) && minor <= (scale.Max + FLT_EPSILON))
out.push_back(ImTick(minor, false, false));
}
}
}
else {
const double range = NiceNum(scale.Max - scale.Min, 0);
const double interval = NiceNum(range / (nMajor - 1), 1);
const double graphmin = floor(scale.Min / interval) * interval;
const double graphmax = ceil(scale.Max / interval) * interval;
for (double major = graphmin; major < graphmax + 0.5 * interval; major += interval) {
if (major >= scale.Min && major <= scale.Max)
out.push_back(ImTick(major, true));
for (int i = 1; i < nMinor; ++i) {
double minor = major + i * interval / nMinor;
if (minor >= scale.Min && minor <= scale.Max)
out.push_back(ImTick(minor, false));
}
}
}
}
inline void LabelTicks(ImVector<ImTick> &ticks, bool scientific, ImGuiTextBuffer& buffer) {
buffer.Buf.resize(0);
char temp[32];
for (ImTick &tk : ticks) {
if (tk.RenderLabel) {
tk.TextOffset = buffer.size();
if (scientific)
sprintf(temp, "%.0e", tk.PlotPos);
else
sprintf(temp, "%g", tk.PlotPos);
buffer.append(temp, temp + strlen(temp) + 1);
tk.Size = CalcTextSize(buffer.Buf.Data + tk.TextOffset);
}
}
}
namespace {
struct AxisState {
ImPlotAxis* axis;
bool has_range;
ImGuiCond range_cond;
bool present;
int present_so_far;
bool flip;
bool lock_min;
bool lock_max;
bool lock;
AxisState(ImPlotAxis& axis_in, bool has_range_in, ImGuiCond range_cond_in,
bool present_in, int previous_present)
: axis(&axis_in),
has_range(has_range_in),
range_cond(range_cond_in),
present(present_in),
present_so_far(previous_present + (present ? 1 : 0)),
flip(HasFlag(axis->Flags, ImAxisFlags_Invert)),
lock_min(HasFlag(axis->Flags, ImAxisFlags_LockMin)),
lock_max(HasFlag(axis->Flags, ImAxisFlags_LockMax)),
lock(present && ((lock_min && lock_max) || (has_range && range_cond == ImGuiCond_Always))) {}
AxisState()
: axis(),
has_range(),
range_cond(),
present(),
present_so_far(),
flip(),
lock_min(),
lock_max(),
lock() {}
};
void UpdateAxisColor(int axis_flag, ImPlotContext::AxisColor* col) {
const ImVec4 col_Axis = gp.Style.Colors[axis_flag].w == -1 ? ImGui::GetStyle().Colors[ImGuiCol_Text] * ImVec4(1, 1, 1, 0.25f) : gp.Style.Colors[axis_flag];
col->Major = GetColorU32(col_Axis);
col->Minor = GetColorU32(col_Axis * ImVec4(1, 1, 1, 0.25f));
col->Txt = GetColorU32({col_Axis.x, col_Axis.y, col_Axis.z, 1});
}
ImRect GetAxisScale(int y_axis, float tx, float ty, float zoom_rate) {
return ImRect(
PixelsToPlot(gp.BB_Grid.Min - gp.BB_Grid.GetSize() * ImVec2(tx * zoom_rate, ty * zoom_rate), y_axis),
PixelsToPlot(gp.BB_Grid.Max + gp.BB_Grid.GetSize() * ImVec2((1 - tx) * zoom_rate, (1 - ty) * zoom_rate), y_axis));
}
class YPadCalculator {
public:
YPadCalculator(const AxisState* axis_states, const float* max_label_widths, int txt_off)
: AxisStates(axis_states), MaxLabelWidths(max_label_widths), TxtOff(txt_off) {}
float operator()(int y_axis) {
ImPlot& plot = *gp.CurrentPlot;
if (!AxisStates[y_axis].present) { return 0; }
// If we have more than 1 axis present before us, then we need
// extra space to account for our tick bar.
int pad_result = 0;
if (AxisStates[y_axis].present_so_far >= 3) {
pad_result += 6;
}
if (!HasFlag(plot.YAxis[y_axis].Flags, ImAxisFlags_TickLabels)) {
return pad_result;
}
pad_result += MaxLabelWidths[y_axis] + TxtOff;
return pad_result;
}
private:
const AxisState* const AxisStates;
const float* const MaxLabelWidths;
const int TxtOff;
};
} // namespace
//-----------------------------------------------------------------------------
// BeginPlot()
//-----------------------------------------------------------------------------
bool BeginPlot(const char* title, const char* x_label, const char* y_label, const ImVec2& size, ImPlotFlags flags, ImAxisFlags x_flags, ImAxisFlags y_flags, ImAxisFlags y2_flags, ImAxisFlags y3_flags) {
IM_ASSERT_USER_ERROR(gp.CurrentPlot == NULL, "Mismatched BeginPlot()/EndPlot()!");
// FRONT MATTER -----------------------------------------------------------
ImGuiContext &G = *GImGui;
ImGuiWindow * Window = G.CurrentWindow;
if (Window->SkipItems) {
gp.NextPlotData = ImNextPlotData();
return false;
}
const ImGuiID ID = Window->GetID(title);
const ImGuiStyle &Style = G.Style;
const ImGuiIO & IO = GetIO();
bool just_created = gp.Plots.GetByKey(ID) == NULL;
gp.CurrentPlot = gp.Plots.GetOrAddByKey(ID);
ImPlot &plot = *gp.CurrentPlot;
plot.CurrentYAxis = 0;
plot.Flags = flags;
if (just_created) {
plot.XAxis.Flags = x_flags;
plot.YAxis[0].Flags = y_flags;
plot.YAxis[1].Flags = y2_flags;
plot.YAxis[2].Flags = y3_flags;
}
// capture scroll with a child region
if (!HasFlag(plot.Flags, ImPlotFlags_NoChild)) {
ImGui::BeginChild(title, size);
Window = ImGui::GetCurrentWindow();
Window->ScrollMax.y = 1.0f;
}
ImDrawList &DrawList = *Window->DrawList;
// NextPlotData -----------------------------------------------------------
if (gp.NextPlotData.HasXBounds) {
if (just_created || gp.NextPlotData.XBoundsCond == ImGuiCond_Always)
{
plot.XAxis.Range = gp.NextPlotData.X;
}
}
for (int i = 0; i < MAX_Y_AXES; i++) {
if (gp.NextPlotData.HasYBounds[i]) {
if (just_created || gp.NextPlotData.YBoundsCond[i] == ImGuiCond_Always)
{
plot.YAxis[i].Range = gp.NextPlotData.Y[i];
}
}
}
// AXIS STATES ------------------------------------------------------------
AxisState x(plot.XAxis, gp.NextPlotData.HasXBounds, gp.NextPlotData.XBoundsCond, true, 0);
AxisState y[MAX_Y_AXES];
y[0] = AxisState(plot.YAxis[0], gp.NextPlotData.HasYBounds[0], gp.NextPlotData.YBoundsCond[0], true, 0);
y[1] = AxisState(plot.YAxis[1], gp.NextPlotData.HasYBounds[1], gp.NextPlotData.YBoundsCond[1],
HasFlag(plot.Flags, ImPlotFlags_Y2Axis), y[0].present_so_far);
y[2] = AxisState(plot.YAxis[2], gp.NextPlotData.HasYBounds[2], gp.NextPlotData.YBoundsCond[2],
HasFlag(plot.Flags, ImPlotFlags_Y3Axis), y[1].present_so_far);
const bool lock_plot = x.lock && y[0].lock && y[1].lock && y[2].lock;
// CONSTRAINTS ------------------------------------------------------------
plot.XAxis.Range.Min = ConstrainNan(ConstrainInf(plot.XAxis.Range.Min));
plot.XAxis.Range.Max = ConstrainNan(ConstrainInf(plot.XAxis.Range.Max));
for (int i = 0; i < MAX_Y_AXES; i++) {
plot.YAxis[i].Range.Min = ConstrainNan(ConstrainInf(plot.YAxis[i].Range.Min));
plot.YAxis[i].Range.Max = ConstrainNan(ConstrainInf(plot.YAxis[i].Range.Max));
}
if (HasFlag(plot.XAxis.Flags, ImAxisFlags_LogScale))
plot.XAxis.Range.Min = ConstrainLog(plot.XAxis.Range.Min);
if (HasFlag(plot.XAxis.Flags, ImAxisFlags_LogScale))
plot.XAxis.Range.Max = ConstrainLog(plot.XAxis.Range.Max);
for (int i = 0; i < MAX_Y_AXES; i++) {
if (HasFlag(plot.YAxis[i].Flags, ImAxisFlags_LogScale))
plot.YAxis[i].Range.Min = ConstrainLog(plot.YAxis[i].Range.Min);
if (HasFlag(plot.YAxis[i].Flags, ImAxisFlags_LogScale))
plot.YAxis[i].Range.Max = ConstrainLog(plot.YAxis[i].Range.Max);
}
if (plot.XAxis.Range.Max <= plot.XAxis.Range.Min)
plot.XAxis.Range.Max = plot.XAxis.Range.Min + FLT_EPSILON;
for (int i = 0; i < MAX_Y_AXES; i++) {
if (plot.YAxis[i].Range.Max <= plot.YAxis[i].Range.Min)
plot.YAxis[i].Range.Max = plot.YAxis[i].Range.Min + FLT_EPSILON;
}
// adaptive divisions
if (HasFlag(plot.XAxis.Flags, ImAxisFlags_Adaptive)) {
plot.XAxis.Divisions = (int)IM_ROUND(0.003 * gp.BB_Canvas.GetWidth());
if (plot.XAxis.Divisions < 2)
plot.XAxis.Divisions = 2;
}
for (int i = 0; i < MAX_Y_AXES; i++) {
if (HasFlag(plot.YAxis[i].Flags, ImAxisFlags_Adaptive)) {
plot.YAxis[i].Divisions = (int)IM_ROUND(0.003 * gp.BB_Canvas.GetHeight());
if (plot.YAxis[i].Divisions < 2)
plot.YAxis[i].Divisions = 2;
}
}
// COLORS -----------------------------------------------------------------
gp.Col_Frame = gp.Style.Colors[ImPlotCol_FrameBg].w == -1 ? GetColorU32(ImGuiCol_FrameBg) : GetColorU32(gp.Style.Colors[ImPlotCol_FrameBg]);
gp.Col_Bg = gp.Style.Colors[ImPlotCol_PlotBg].w == -1 ? GetColorU32(ImGuiCol_WindowBg) : GetColorU32(gp.Style.Colors[ImPlotCol_PlotBg]);
gp.Col_Border = gp.Style.Colors[ImPlotCol_PlotBorder].w == -1 ? GetColorU32(ImGuiCol_Text, 0.5f) : GetColorU32(gp.Style.Colors[ImPlotCol_PlotBorder]);
UpdateAxisColor(ImPlotCol_XAxis, &gp.Col_X);
UpdateAxisColor(ImPlotCol_YAxis, &gp.Col_Y[0]);
UpdateAxisColor(ImPlotCol_Y2Axis, &gp.Col_Y[1]);
UpdateAxisColor(ImPlotCol_Y3Axis, &gp.Col_Y[2]);
gp.Col_Txt = GetColorU32(ImGuiCol_Text);
gp.Col_TxtDis = GetColorU32(ImGuiCol_TextDisabled);
gp.Col_SlctBg = GetColorU32(gp.Style.Colors[ImPlotCol_Selection] * ImVec4(1,1,1,0.25f));
gp.Col_SlctBd = GetColorU32(gp.Style.Colors[ImPlotCol_Selection]);
gp.Col_QryBg = GetColorU32(gp.Style.Colors[ImPlotCol_Query] * ImVec4(1,1,1,0.25f));
gp.Col_QryBd = GetColorU32(gp.Style.Colors[ImPlotCol_Query]);
// BB AND HOVER -----------------------------------------------------------
// frame
const ImVec2 frame_size = CalcItemSize(size, 100, 100);
gp.BB_Frame = ImRect(Window->DC.CursorPos, Window->DC.CursorPos + frame_size);
ItemSize(gp.BB_Frame);
if (!ItemAdd(gp.BB_Frame, 0, &gp.BB_Frame)) {
gp.NextPlotData = ImNextPlotData();
gp.CurrentPlot = NULL;
if (!HasFlag(plot.Flags, ImPlotFlags_NoChild))
ImGui::EndChild();
return false;
}
gp.Hov_Frame = ItemHoverable(gp.BB_Frame, ID);
RenderFrame(gp.BB_Frame.Min, gp.BB_Frame.Max, gp.Col_Frame, true, Style.FrameRounding);
// canvas bb
gp.BB_Canvas = ImRect(gp.BB_Frame.Min + Style.WindowPadding, gp.BB_Frame.Max - Style.WindowPadding);
gp.RenderX = (HasFlag(plot.XAxis.Flags, ImAxisFlags_GridLines) ||
HasFlag(plot.XAxis.Flags, ImAxisFlags_TickMarks) ||
HasFlag(plot.XAxis.Flags, ImAxisFlags_TickLabels)) && plot.XAxis.Divisions > 1;
for (int i = 0; i < MAX_Y_AXES; i++) {
gp.RenderY[i] =
y[i].present &&
(HasFlag(plot.YAxis[i].Flags, ImAxisFlags_GridLines) ||
HasFlag(plot.YAxis[i].Flags, ImAxisFlags_TickMarks) ||
HasFlag(plot.YAxis[i].Flags, ImAxisFlags_TickLabels)) && plot.YAxis[i].Divisions > 1;
}
// get ticks
if (gp.RenderX)
GetTicks(plot.XAxis.Range, plot.XAxis.Divisions, plot.XAxis.Subdivisions, HasFlag(plot.XAxis.Flags, ImAxisFlags_LogScale), gp.XTicks);
for (int i = 0; i < MAX_Y_AXES; i++) {
if (gp.RenderY[i]) {
GetTicks(plot.YAxis[i].Range, plot.YAxis[i].Divisions, plot.YAxis[i].Subdivisions, HasFlag(plot.YAxis[i].Flags, ImAxisFlags_LogScale), gp.YTicks[i]);
}
}
// label ticks
if (HasFlag(plot.XAxis.Flags, ImAxisFlags_TickLabels))
LabelTicks(gp.XTicks, HasFlag(plot.XAxis.Flags, ImAxisFlags_Scientific), gp.XTickLabels);
float max_label_width[MAX_Y_AXES] = {};
for (int i = 0; i < MAX_Y_AXES; i++) {
if (y[i].present && HasFlag(plot.YAxis[i].Flags, ImAxisFlags_TickLabels)) {
LabelTicks(gp.YTicks[i], HasFlag(plot.YAxis[i].Flags, ImAxisFlags_Scientific), gp.YTickLabels[i]);
for (ImTick &yt : gp.YTicks[i]) {
max_label_width[i] = yt.Size.x > max_label_width[i] ? yt.Size.x : max_label_width[i];
}
}
}
// grid bb
const ImVec2 title_size = CalcTextSize(title, NULL, true);
const float txt_off = 5;
const float txt_height = GetTextLineHeight();
const float pad_top = title_size.x > 0.0f ? txt_height + txt_off : 0;
const float pad_bot = (HasFlag(plot.XAxis.Flags, ImAxisFlags_TickLabels) ? txt_height + txt_off : 0) + (x_label ? txt_height + txt_off : 0);
YPadCalculator y_axis_pad(y, max_label_width, txt_off);
const float pad_left = y_axis_pad(0) + (y_label ? txt_height + txt_off : 0);
const float pad_right = y_axis_pad(1) + y_axis_pad(2);
gp.BB_Grid = ImRect(gp.BB_Canvas.Min + ImVec2(pad_left, pad_top), gp.BB_Canvas.Max - ImVec2(pad_right, pad_bot));
gp.Hov_Grid = gp.BB_Grid.Contains(IO.MousePos);
// axis region bbs
const ImRect xAxisRegion_bb(gp.BB_Grid.Min + ImVec2(10, 0), {gp.BB_Grid.Max.x, gp.BB_Frame.Max.y});
const bool hov_x_axis_region = xAxisRegion_bb.Contains(IO.MousePos);
// The left labels are referenced to the left of the bounding box.
gp.AxisLabelReference[0] = gp.BB_Grid.Min.x;
// If Y axis 1 is present, its labels will be referenced to the
// right of the bounding box.
gp.AxisLabelReference[1] = gp.BB_Grid.Max.x;
// The third axis may be either referenced to the right of the
// bounding box, or 6 pixels further past the end of the 2nd axis.
gp.AxisLabelReference[2] =
!y[1].present ?
gp.BB_Grid.Max.x :
(gp.AxisLabelReference[1] + y_axis_pad(1) + 6);
ImRect yAxisRegion_bb[MAX_Y_AXES];
yAxisRegion_bb[0] = ImRect({gp.BB_Frame.Min.x, gp.BB_Grid.Min.y}, {gp.BB_Grid.Min.x + 6, gp.BB_Grid.Max.y - 10});
// The auxiliary y axes are off to the right of the BB grid.
yAxisRegion_bb[1] = ImRect({gp.BB_Grid.Max.x - 6, gp.BB_Grid.Min.y},
gp.BB_Grid.Max + ImVec2(y_axis_pad(1), 0));
yAxisRegion_bb[2] = ImRect({gp.AxisLabelReference[2] - 6, gp.BB_Grid.Min.y},
yAxisRegion_bb[1].Max + ImVec2(y_axis_pad(2), 0));
ImRect centralRegion({gp.BB_Grid.Min.x + 6, gp.BB_Grid.Min.y},
{gp.BB_Grid.Max.x - 6, gp.BB_Grid.Max.y});
const bool hov_y_axis_region[MAX_Y_AXES] = {
y[0].present && (yAxisRegion_bb[0].Contains(IO.MousePos) || centralRegion.Contains(IO.MousePos)),
y[1].present && (yAxisRegion_bb[1].Contains(IO.MousePos) || centralRegion.Contains(IO.MousePos)),
y[2].present && (yAxisRegion_bb[2].Contains(IO.MousePos) || centralRegion.Contains(IO.MousePos)),
};
const bool any_hov_y_axis_region =
hov_y_axis_region[0] || hov_y_axis_region[1] || hov_y_axis_region[2];
// legend hovered from last frame
const bool hov_legend = HasFlag(plot.Flags, ImPlotFlags_Legend) ? gp.Hov_Frame && plot.BB_Legend.Contains(IO.MousePos) : false;
bool hov_query = false;
if (plot.Queried && !plot.Querying) {
ImRect bb_query = plot.QueryRect;
bb_query.Min += gp.BB_Grid.Min;
bb_query.Max += gp.BB_Grid.Min;
hov_query = bb_query.Contains(IO.MousePos);
}
// QUERY DRAG -------------------------------------------------------------
if (plot.DraggingQuery && (IO.MouseReleased[0] || !IO.MouseDown[0])) {
plot.DraggingQuery = false;
}
if (plot.DraggingQuery) {
SetMouseCursor(ImGuiMouseCursor_ResizeAll);
plot.QueryRect.Min += IO.MouseDelta;
plot.QueryRect.Max += IO.MouseDelta;
}
if (gp.Hov_Frame && hov_query && !plot.DraggingQuery && !plot.Selecting && !hov_legend) {
SetMouseCursor(ImGuiMouseCursor_ResizeAll);
const bool any_y_dragging =
plot.YAxis[0].Dragging || plot.YAxis[1].Dragging || plot.YAxis[2].Dragging;
if (IO.MouseDown[0] && !plot.XAxis.Dragging && !any_y_dragging) {
plot.DraggingQuery = true;
}
}
// DRAG INPUT -------------------------------------------------------------
// end drags
if (plot.XAxis.Dragging && (IO.MouseReleased[0] || !IO.MouseDown[0])) {
plot.XAxis.Dragging = false;
G.IO.MouseDragMaxDistanceSqr[0] = 0;
}
for (int i = 0; i < MAX_Y_AXES; i++) {
if (plot.YAxis[i].Dragging && (IO.MouseReleased[0] || !IO.MouseDown[0])) {
plot.YAxis[i].Dragging = false;
G.IO.MouseDragMaxDistanceSqr[0] = 0;
}
}
// do drag
const bool any_y_dragging =
plot.YAxis[0].Dragging || plot.YAxis[1].Dragging || plot.YAxis[2].Dragging;
if (plot.XAxis.Dragging || any_y_dragging) {
UpdateTransformCache();
if (!x.lock && plot.XAxis.Dragging) {
ImVec2 plot_tl = PixelsToPlot(gp.BB_Grid.Min - IO.MouseDelta, 0);
ImVec2 plot_br = PixelsToPlot(gp.BB_Grid.Max - IO.MouseDelta, 0);
if (!x.lock_min)
plot.XAxis.Range.Min = x.flip ? plot_br.x : plot_tl.x;
if (!x.lock_max)
plot.XAxis.Range.Max = x.flip ? plot_tl.x : plot_br.x;
}
for (int i = 0; i < MAX_Y_AXES; i++) {
if (!y[i].lock && plot.YAxis[i].Dragging) {
ImVec2 plot_tl = PixelsToPlot(gp.BB_Grid.Min - IO.MouseDelta, i);
ImVec2 plot_br = PixelsToPlot(gp.BB_Grid.Max - IO.MouseDelta, i);
if (!y[i].lock_min)
plot.YAxis[i].Range.Min = y[i].flip ? plot_tl.y : plot_br.y;
if (!y[i].lock_max)
plot.YAxis[i].Range.Max = y[i].flip ? plot_br.y : plot_tl.y;
}
}
// Set the mouse cursor based on which axes are moving.
int direction = 0;
if (!x.lock && plot.XAxis.Dragging) {
direction |= (1 << 1);
}
for (int i = 0; i < MAX_Y_AXES; i++) {
if (!y[i].present) { continue; }
if (!y[i].lock && plot.YAxis[i].Dragging) {
direction |= (1 << 2);
break;
}
}
if (direction == 0) {
ImGui::SetMouseCursor(ImGuiMouseCursor_NotAllowed);
} else if (direction == (1 << 1)) {
ImGui::SetMouseCursor(ImGuiMouseCursor_ResizeEW);
} else if (direction == (1 << 2)) {
ImGui::SetMouseCursor(ImGuiMouseCursor_ResizeNS);
} else {
ImGui::SetMouseCursor(ImGuiMouseCursor_ResizeAll);
}
}
// start drag
if (gp.Hov_Frame && IO.MouseDragMaxDistanceSqr[0] > 5 && !plot.Selecting && !hov_legend && !hov_query && !plot.DraggingQuery) {
if (hov_x_axis_region) {
plot.XAxis.Dragging = true;
}
for (int i = 0; i < MAX_Y_AXES; i++) {
if (hov_y_axis_region[i]) {
plot.YAxis[i].Dragging = true;
}
}
}
// SCROLL INPUT -----------------------------------------------------------
if (gp.Hov_Frame && (hov_x_axis_region || any_hov_y_axis_region) && IO.MouseWheel != 0) {
UpdateTransformCache();
float zoom_rate = 0.1f;
if (IO.MouseWheel > 0)
zoom_rate = (-zoom_rate) / (1.0f + (2.0f * zoom_rate));
float tx = Remap(IO.MousePos.x, gp.BB_Grid.Min.x, gp.BB_Grid.Max.x, 0, 1);
float ty = Remap(IO.MousePos.y, gp.BB_Grid.Min.y, gp.BB_Grid.Max.y, 0, 1);
if (hov_x_axis_region && !x.lock) {
ImRect axis_scale = GetAxisScale(0, tx, ty, zoom_rate);
const ImVec2& plot_tl = axis_scale.Min;
const ImVec2& plot_br = axis_scale.Max;
if (!x.lock_min)
plot.XAxis.Range.Min = x.flip ? plot_br.x : plot_tl.x;
if (!x.lock_max)
plot.XAxis.Range.Max = x.flip ? plot_tl.x : plot_br.x;
}
for (int i = 0; i < MAX_Y_AXES; i++) {
if (hov_y_axis_region[i] && !y[i].lock) {
ImRect axis_scale = GetAxisScale(i, tx, ty, zoom_rate);
const ImVec2& plot_tl = axis_scale.Min;
const ImVec2& plot_br = axis_scale.Max;
if (!y[i].lock_min)
plot.YAxis[i].Range.Min = y[i].flip ? plot_tl.y : plot_br.y;
if (!y[i].lock_max)
plot.YAxis[i].Range.Max = y[i].flip ? plot_br.y : plot_tl.y;
}
}
}
// BOX-SELECTION AND QUERY ------------------------------------------------
// confirm selection
if (plot.Selecting && (IO.MouseReleased[1] || !IO.MouseDown[1])) {
UpdateTransformCache();
ImVec2 select_size = plot.SelectStart - IO.MousePos;
if (HasFlag(plot.Flags, ImPlotFlags_Selection) && ImFabs(select_size.x) > 2 && ImFabs(select_size.y) > 2) {
ImVec2 p1 = PixelsToPlot(plot.SelectStart);
ImVec2 p2 = PixelsToPlot(IO.MousePos);
if (!x.lock_min && !IO.KeyAlt)
plot.XAxis.Range.Min = ImMin(p1.x, p2.x);
if (!x.lock_max && !IO.KeyAlt)
plot.XAxis.Range.Max = ImMax(p1.x, p2.x);
for (int i = 0; i < MAX_Y_AXES; i++) {
if (!y[i].lock_min && !IO.KeyShift)
plot.YAxis[i].Range.Min = ImMin(p1.y, p2.y);
if (!y[i].lock_max && !IO.KeyShift)
plot.YAxis[i].Range.Max = ImMax(p1.y, p2.y);
}
}
plot.Selecting = false;
}
// bad selection
if (plot.Selecting && (!HasFlag(plot.Flags, ImPlotFlags_Selection) || lock_plot) && ImLengthSqr(plot.SelectStart - IO.MousePos) > 4) {
ImGui::SetMouseCursor(ImGuiMouseCursor_NotAllowed);
}
// cancel selection
if (plot.Selecting && (IO.MouseClicked[0] || IO.MouseDown[0])) {
plot.Selecting = false;
}
// begin selection or query
if (gp.Hov_Frame && gp.Hov_Grid && IO.MouseClicked[1]) {
plot.SelectStart = IO.MousePos;
plot.Selecting = true;
}
// update query
if (plot.Querying) {
UpdateTransformCache();
plot.QueryRect.Min.x = IO.KeyAlt ? gp.BB_Grid.Min.x : ImMin(plot.QueryStart.x, IO.MousePos.x);
plot.QueryRect.Max.x = IO.KeyAlt ? gp.BB_Grid.Max.x : ImMax(plot.QueryStart.x, IO.MousePos.x);
plot.QueryRect.Min.y = IO.KeyShift ? gp.BB_Grid.Min.y : ImMin(plot.QueryStart.y, IO.MousePos.y);
plot.QueryRect.Max.y = IO.KeyShift ? gp.BB_Grid.Max.y : ImMax(plot.QueryStart.y, IO.MousePos.y);
plot.QueryRect.Min -= gp.BB_Grid.Min;
plot.QueryRect.Max -= gp.BB_Grid.Min;
}
// end query
if (plot.Querying && (IO.MouseReleased[2] || IO.MouseReleased[1])) {
plot.Querying = false;
if (plot.QueryRect.GetWidth() > 2 && plot.QueryRect.GetHeight() > 2) {
plot.Queried = true;
}
else {
plot.Queried = false;
}
}
// begin query
if ((gp.Hov_Frame && gp.Hov_Grid && IO.MouseClicked[2])) {
plot.QueryRect = ImRect(0,0,0,0);
plot.Querying = true;
plot.Queried = true;
plot.QueryStart = IO.MousePos;
}
// toggle between select/query
if (plot.Selecting && IO.KeyCtrl) {
plot.Selecting = false;
plot.QueryRect = ImRect(0,0,0,0);
plot.Querying = true;
plot.Queried = true;
plot.QueryStart = plot.SelectStart;
}
if (plot.Querying && !IO.KeyCtrl && !IO.MouseDown[2]) {
plot.Selecting = true;
plot.Querying = false;
plot.Queried = false;
plot.QueryRect = ImRect(0,0,0,0);
}
// DOUBLE CLICK -----------------------------------------------------------
if ( IO.MouseDoubleClicked[0] && gp.Hov_Frame && (hov_x_axis_region || any_hov_y_axis_region) && !hov_legend && !hov_query) {
gp.FitThisFrame = true;
gp.FitX = hov_x_axis_region;
for (int i = 0; i < MAX_Y_AXES; i++) {
gp.FitY[i] = hov_y_axis_region[i];
}
}
else {
gp.FitThisFrame = false;
gp.FitX = false;
for (int i = 0; i < MAX_Y_AXES; i++) {
gp.FitY[i] = false;
}
}
// FOCUS ------------------------------------------------------------------
// focus window
if ((IO.MouseClicked[0] || IO.MouseClicked[1]) && gp.Hov_Frame)
FocusWindow(GetCurrentWindow());
UpdateTransformCache();
// set mouse position
for (int i = 0; i < MAX_Y_AXES; i++) {
gp.LastMousePos[i] = PixelsToPlot(IO.MousePos, i);
}
// RENDER -----------------------------------------------------------------
// grid bg
DrawList.AddRectFilled(gp.BB_Grid.Min, gp.BB_Grid.Max, gp.Col_Bg);
// render axes
PushPlotClipRect();
// transform ticks
if (gp.RenderX) {
for (ImTick& xt : gp.XTicks)
xt.PixelPos = PlotToPixels((float)xt.PlotPos, 0, 0).x;
}
for (int i = 0; i < MAX_Y_AXES; i++) {
if (gp.RenderY[i]) {
for (ImTick& yt : gp.YTicks[i])
yt.PixelPos = PlotToPixels(0, (float)yt.PlotPos, i).y;
}
}
// render grid
if (HasFlag(plot.XAxis.Flags, ImAxisFlags_GridLines)) {
for (ImTick &xt : gp.XTicks)
DrawList.AddLine({xt.PixelPos, gp.BB_Grid.Min.y}, {xt.PixelPos, gp.BB_Grid.Max.y}, xt.Major ? gp.Col_X.Major : gp.Col_X.Minor, 1);
}
for (int i = 0; i < MAX_Y_AXES; i++) {
if (y[i].present && HasFlag(plot.YAxis[i].Flags, ImAxisFlags_GridLines)) {
for (ImTick &yt : gp.YTicks[i])
DrawList.AddLine({gp.BB_Grid.Min.x, yt.PixelPos}, {gp.BB_Grid.Max.x, yt.PixelPos}, yt.Major ? gp.Col_Y[i].Major : gp.Col_Y[i].Minor, 1);
}
}
PopPlotClipRect();
// render title
if (title_size.x > 0.0f) {
RenderText(ImVec2(gp.BB_Canvas.GetCenter().x - title_size.x * 0.5f, gp.BB_Canvas.Min.y), title, NULL, true);
}
// render labels
if (HasFlag(plot.XAxis.Flags, ImAxisFlags_TickLabels)) {
PushClipRect(gp.BB_Frame.Min, gp.BB_Frame.Max, true);
for (ImTick &xt : gp.XTicks) {
if (xt.RenderLabel && xt.PixelPos >= gp.BB_Grid.Min.x - 1 && xt.PixelPos <= gp.BB_Grid.Max.x + 1)
DrawList.AddText({xt.PixelPos - xt.Size.x * 0.5f, gp.BB_Grid.Max.y + txt_off}, gp.Col_X.Txt, gp.XTickLabels.Buf.Data + xt.TextOffset);
}
ImGui::PopClipRect();
}
if (x_label) {
const ImVec2 xLabel_size = CalcTextSize(x_label);
const ImVec2 xLabel_pos(gp.BB_Grid.GetCenter().x - xLabel_size.x * 0.5f,
gp.BB_Canvas.Max.y - txt_height);
DrawList.AddText(xLabel_pos, gp.Col_X.Txt, x_label);
}
PushClipRect(gp.BB_Frame.Min, gp.BB_Frame.Max, true);
for (int i = 0; i < MAX_Y_AXES; i++) {
if (y[i].present && HasFlag(plot.YAxis[i].Flags, ImAxisFlags_TickLabels)) {
const int x_start =
gp.AxisLabelReference[i] +
((i == 0) ?
(-txt_off - max_label_width[0]) :
txt_off);
for (ImTick &yt : gp.YTicks[i]) {
if (yt.RenderLabel && yt.PixelPos >= gp.BB_Grid.Min.y - 1 && yt.PixelPos <= gp.BB_Grid.Max.y + 1) {
ImVec2 start(x_start, yt.PixelPos - 0.5f * yt.Size.y);
DrawList.AddText(start, gp.Col_Y[i].Txt, gp.YTickLabels[i].Buf.Data + yt.TextOffset);
}
}
}
}
ImGui::PopClipRect();
if (y_label) {
const ImVec2 yLabel_size = CalcTextSizeVertical(y_label);
const ImVec2 yLabel_pos(gp.BB_Canvas.Min.x, gp.BB_Grid.GetCenter().y + yLabel_size.y * 0.5f);
AddTextVertical(&DrawList, y_label, yLabel_pos, gp.Col_Y[0].Txt);
}
// PREP -------------------------------------------------------------------
// push plot ID into stack
PushID(ID);
// reset items count
gp.VisibleItemCount = 0;
// reset extents
gp.ExtentsX.Min = INFINITY;
gp.ExtentsX.Max = -INFINITY;
for (int i = 0; i < MAX_Y_AXES; i++) {
gp.ExtentsY[i].Min = INFINITY;
gp.ExtentsY[i].Max = -INFINITY;
}
// clear item names
gp.LegendLabels.Buf.resize(0);
// reset digital plot items count
gp.DigitalPlotItemCnt = 0;
return true;
}
//-----------------------------------------------------------------------------
// Context Menu
//-----------------------------------------------------------------------------
inline void AxisMenu(ImPlotAxis& Axis) {
ImGui::PushItemWidth(75);
bool lock_min = HasFlag(Axis.Flags, ImAxisFlags_LockMin);
bool lock_max = HasFlag(Axis.Flags, ImAxisFlags_LockMax);
bool invert = HasFlag(Axis.Flags, ImAxisFlags_Invert);
bool logscale = HasFlag(Axis.Flags, ImAxisFlags_LogScale);
bool grid = HasFlag(Axis.Flags, ImAxisFlags_GridLines);
bool ticks = HasFlag(Axis.Flags, ImAxisFlags_TickMarks);
bool labels = HasFlag(Axis.Flags, ImAxisFlags_TickLabels);
if (ImGui::Checkbox("##LockMin", &lock_min))
FlipFlag(Axis.Flags, ImAxisFlags_LockMin);
ImGui::SameLine();
if (lock_min) {
ImGui::PushItemFlag(ImGuiItemFlags_Disabled, true);
ImGui::PushStyleVar(ImGuiStyleVar_Alpha, ImGui::GetStyle().Alpha * 0.25f);
}
ImGui::DragFloat("Min", &Axis.Range.Min, 0.01f + 0.01f * (Axis.Range.Size()), -INFINITY, Axis.Range.Max - FLT_EPSILON);
if (lock_min) {
ImGui::PopItemFlag();
ImGui::PopStyleVar(); }
if (ImGui::Checkbox("##LockMax", &lock_max))
FlipFlag(Axis.Flags, ImAxisFlags_LockMax);
ImGui::SameLine();
if (lock_max) {
ImGui::PushItemFlag(ImGuiItemFlags_Disabled, true);
ImGui::PushStyleVar(ImGuiStyleVar_Alpha, ImGui::GetStyle().Alpha * 0.25f); }
ImGui::DragFloat("Max", &Axis.Range.Max, 0.01f + 0.01f * (Axis.Range.Size()), Axis.Range.Min + FLT_EPSILON, INFINITY);
if (lock_max) {
ImGui::PopItemFlag();
ImGui::PopStyleVar();
}
ImGui::Separator();
if (ImGui::Checkbox("Invert", &invert))
FlipFlag(Axis.Flags, ImAxisFlags_Invert);
if (ImGui::Checkbox("Log Scale", &logscale))
FlipFlag(Axis.Flags, ImAxisFlags_LogScale);
ImGui::Separator();
if (ImGui::Checkbox("Grid Lines", &grid))
FlipFlag(Axis.Flags, ImAxisFlags_GridLines);
if (ImGui::Checkbox("Tick Marks", &ticks))
FlipFlag(Axis.Flags, ImAxisFlags_TickMarks);
if (ImGui::Checkbox("Labels", &labels))
FlipFlag(Axis.Flags, ImAxisFlags_TickLabels);
}
void PlotContextMenu(ImPlot& plot) {
if (ImGui::BeginMenu("X-Axis")) {
PushID("X");
AxisMenu(plot.XAxis);
PopID();
ImGui::EndMenu();
}
for (int i = 0; i < MAX_Y_AXES; i++) {
if (i == 1 && !HasFlag(plot.Flags, ImPlotFlags_Y2Axis)) {
continue;
}
if (i == 2 && !HasFlag(plot.Flags, ImPlotFlags_Y3Axis)) {
continue;
}
char buf[10] = {};
if (i == 0) {
snprintf(buf, sizeof(buf) - 1, "Y-Axis");
} else {
snprintf(buf, sizeof(buf) - 1, "Y-Axis %d", i + 1);
}
if (ImGui::BeginMenu(buf)) {
PushID(i);
AxisMenu(plot.YAxis[i]);
PopID();
ImGui::EndMenu();
}
}
ImGui::Separator();
if ((ImGui::BeginMenu("Settings"))) {
if (ImGui::MenuItem("Box Select",NULL,HasFlag(plot.Flags, ImPlotFlags_Selection))) {
FlipFlag(plot.Flags, ImPlotFlags_Selection);
}
if (ImGui::MenuItem("Crosshairs",NULL,HasFlag(plot.Flags, ImPlotFlags_Crosshairs))) {
FlipFlag(plot.Flags, ImPlotFlags_Crosshairs);
}
if (ImGui::MenuItem("Mouse Position",NULL,HasFlag(plot.Flags, ImPlotFlags_MousePos))) {
FlipFlag(plot.Flags, ImPlotFlags_MousePos);
}
if (ImGui::MenuItem("Cull Data",NULL,HasFlag(plot.Flags, ImPlotFlags_CullData))) {
FlipFlag(plot.Flags, ImPlotFlags_CullData);
}
if (ImGui::MenuItem("Anti-Aliased Lines",NULL,HasFlag(plot.Flags, ImPlotFlags_AntiAliased))) {
FlipFlag(plot.Flags, ImPlotFlags_AntiAliased);
}
ImGui::EndMenu();
}
if (ImGui::MenuItem("Legend",NULL,HasFlag(plot.Flags, ImPlotFlags_Legend))) {
FlipFlag(plot.Flags, ImPlotFlags_Legend);
}
#if 0
if (ImGui::BeginMenu("Metrics")) {
ImGui::PushItemWidth(75);
ImGui::LabelText("Plots", "%d", gp.Plots.GetSize());
ImGui::LabelText("Color Modifiers", "%d", gp.ColorModifiers.size());
ImGui::LabelText("Style Modifiers", "%d", gp.StyleModifiers.size());
ImGui::PopItemWidth();
ImGui::EndMenu();
}
#endif
}
namespace {
class BufferWriter {
public:
BufferWriter(char* buffer, size_t size) : Buffer(buffer), Pos(0), Size(size) {}
void Write(const char* fmt, ...) IM_FMTARGS(2) {
va_list argp;
va_start(argp, fmt);
VWrite(fmt, argp);
va_end(argp);
}
private:
void VWrite(const char* fmt, va_list argp) {
const int written = ::vsnprintf(&Buffer[Pos], Size - Pos - 1, fmt, argp);
Pos += written;
}
char* const Buffer;
size_t Pos;
const size_t Size;
};
}
//-----------------------------------------------------------------------------
// EndPlot()
//-----------------------------------------------------------------------------
void EndPlot() {
IM_ASSERT_USER_ERROR(gp.CurrentPlot != NULL, "Mismatched BeginPlot()/EndPlot()!");
ImPlot &plot = *gp.CurrentPlot;
ImGuiContext &G = *GImGui;
ImGuiWindow * Window = G.CurrentWindow;
ImDrawList & DrawList = *Window->DrawList;
const ImGuiIO & IO = GetIO();
// AXIS STATES ------------------------------------------------------------
AxisState x(plot.XAxis, gp.NextPlotData.HasXBounds, gp.NextPlotData.XBoundsCond, true, 0);
AxisState y[MAX_Y_AXES];
y[0] = AxisState(plot.YAxis[0], gp.NextPlotData.HasYBounds[0], gp.NextPlotData.YBoundsCond[0], true, 0);
y[1] = AxisState(plot.YAxis[1], gp.NextPlotData.HasYBounds[1], gp.NextPlotData.YBoundsCond[1],
HasFlag(plot.Flags, ImPlotFlags_Y2Axis), y[0].present_so_far);
y[2] = AxisState(plot.YAxis[2], gp.NextPlotData.HasYBounds[2], gp.NextPlotData.YBoundsCond[2],
HasFlag(plot.Flags, ImPlotFlags_Y3Axis), y[1].present_so_far);
const bool lock_plot = x.lock && y[0].lock && y[1].lock && y[2].lock;
const bool any_y_locked = y[0].lock || y[1].lock || y[2].lock;
const bool any_y_dragging = plot.YAxis[0].Dragging || plot.YAxis[1].Dragging || plot.YAxis[2].Dragging;
// FINAL RENDER -----------------------------------------------------------
PushClipRect(gp.BB_Grid.Min, gp.BB_Frame.Max, true);
// render ticks
if (HasFlag(plot.XAxis.Flags, ImAxisFlags_TickMarks)) {
for (ImTick &xt : gp.XTicks)
DrawList.AddLine({xt.PixelPos, gp.BB_Grid.Max.y},{xt.PixelPos, gp.BB_Grid.Max.y - (xt.Major ? 10.0f : 5.0f)}, gp.Col_Border, 1);
}
int axis_count = 0;
for (int i = 0; i < MAX_Y_AXES; i++) {
if (!y[i].present) { continue; }
axis_count++;
if (!HasFlag(plot.YAxis[i].Flags, ImAxisFlags_TickMarks)) { continue; }
float x_start = gp.AxisLabelReference[i];
float direction = (i == 0) ? 1.0 : -1.0;
bool no_major = axis_count >= 3;
for (ImTick &yt : gp.YTicks[i]) {
ImVec2 start = ImVec2(x_start, yt.PixelPos);
DrawList.AddLine(
start,
start + ImVec2(direction * ((!no_major && yt.Major) ? 10.0f : 5.0f), 0),
gp.Col_Border, 1);
}
if (axis_count >= 3) {
// Draw a bar next to the ticks to act as a visual separator.
DrawList.AddLine(
ImVec2(x_start, gp.BB_Grid.Min.y),
ImVec2(x_start, gp.BB_Grid.Max.y),
gp.Col_Border, 1);
}
}
// render selection/query
if (plot.Selecting) {
ImRect select_bb(ImMin(IO.MousePos, plot.SelectStart), ImMax(IO.MousePos, plot.SelectStart));
if (plot.Selecting && !lock_plot && HasFlag(plot.Flags, ImPlotFlags_Selection)) {
if (IO.KeyAlt && IO.KeyShift && select_bb.GetWidth() > 2 && select_bb.GetHeight() > 2) {
DrawList.AddRectFilled(gp.BB_Grid.Min, gp.BB_Grid.Max, gp.Col_SlctBg);
DrawList.AddRect( gp.BB_Grid.Min, gp.BB_Grid.Max, gp.Col_SlctBd);
}
else if ((x.lock || IO.KeyAlt) && select_bb.GetHeight() > 2) {
DrawList.AddRectFilled(ImVec2(gp.BB_Grid.Min.x, select_bb.Min.y), ImVec2(gp.BB_Grid.Max.x, select_bb.Max.y), gp.Col_SlctBg);
DrawList.AddRect( ImVec2(gp.BB_Grid.Min.x, select_bb.Min.y), ImVec2(gp.BB_Grid.Max.x, select_bb.Max.y), gp.Col_SlctBd);
}
else if ((any_y_locked || IO.KeyShift) && select_bb.GetWidth() > 2) {
DrawList.AddRectFilled(ImVec2(select_bb.Min.x, gp.BB_Grid.Min.y), ImVec2(select_bb.Max.x, gp.BB_Grid.Max.y), gp.Col_SlctBg);
DrawList.AddRect( ImVec2(select_bb.Min.x, gp.BB_Grid.Min.y), ImVec2(select_bb.Max.x, gp.BB_Grid.Max.y), gp.Col_SlctBd);
}
else if (select_bb.GetWidth() > 2 && select_bb.GetHeight() > 2) {
DrawList.AddRectFilled(select_bb.Min, select_bb.Max, gp.Col_SlctBg);
DrawList.AddRect( select_bb.Min, select_bb.Max, gp.Col_SlctBd);
}
}
}
if (plot.Querying || plot.Queried) {
if (plot.QueryRect.GetWidth() > 2 && plot.QueryRect.GetHeight() > 2) {
DrawList.AddRectFilled(plot.QueryRect.Min + gp.BB_Grid.Min, plot.QueryRect.Max + gp.BB_Grid.Min, gp.Col_QryBg);
DrawList.AddRect( plot.QueryRect.Min + gp.BB_Grid.Min, plot.QueryRect.Max + gp.BB_Grid.Min, gp.Col_QryBd);
}
}
else if (plot.Queried) {
ImRect bb_query = plot.QueryRect;
bb_query.Min += gp.BB_Grid.Min;
bb_query.Max += gp.BB_Grid.Min;
DrawList.AddRectFilled(bb_query.Min, bb_query.Max, gp.Col_QryBg);
DrawList.AddRect( bb_query.Min, bb_query.Max, gp.Col_QryBd);
}
// render legend
const float txt_ht = GetTextLineHeight();
const ImVec2 legend_offset(10, 10);
const ImVec2 legend_padding(5, 5);
const float legend_icon_size = txt_ht;
ImRect legend_content_bb;
int nItems = GetLegendCount();
bool hov_legend = false;
if (HasFlag(plot.Flags, ImPlotFlags_Legend) && nItems > 0) {
// get max width
float max_label_width = 0;
for (int i = 0; i < nItems; ++i) {
const char* label = GetLegendLabel(i);
ImVec2 labelWidth = CalcTextSize(label, NULL, true);
max_label_width = labelWidth.x > max_label_width ? labelWidth.x : max_label_width;
}
legend_content_bb = ImRect(gp.BB_Grid.Min + legend_offset, gp.BB_Grid.Min + legend_offset + ImVec2(max_label_width, nItems * txt_ht));
plot.BB_Legend = ImRect(legend_content_bb.Min, legend_content_bb.Max + legend_padding * 2 + ImVec2(legend_icon_size, 0));
hov_legend = HasFlag(plot.Flags, ImPlotFlags_Legend) ? gp.Hov_Frame && plot.BB_Legend.Contains(IO.MousePos) : false;
// render legend box
DrawList.AddRectFilled(plot.BB_Legend.Min, plot.BB_Legend.Max, GetColorU32(ImGuiCol_PopupBg));
DrawList.AddRect(plot.BB_Legend.Min, plot.BB_Legend.Max, gp.Col_Border);
// render each legend item
for (int i = 0; i < nItems; ++i) {
ImPlotItem* item = GetLegendItem(i);
ImRect icon_bb;
icon_bb.Min = legend_content_bb.Min + legend_padding + ImVec2(0, i * txt_ht) + ImVec2(2, 2);
icon_bb.Max = legend_content_bb.Min + legend_padding + ImVec2(0, i * txt_ht) + ImVec2(legend_icon_size - 2, legend_icon_size - 2);
ImRect label_bb;
label_bb.Min = legend_content_bb.Min + legend_padding + ImVec2(0, i * txt_ht) + ImVec2(2, 2);
label_bb.Max = legend_content_bb.Min + legend_padding + ImVec2(0, i * txt_ht) + ImVec2(legend_content_bb.Max.x, legend_icon_size - 2);
ImU32 col_hl_txt;
if (HasFlag(plot.Flags, ImPlotFlags_Highlight) && hov_legend && (icon_bb.Contains(IO.MousePos) || label_bb.Contains(IO.MousePos))) {
item->Highlight = true;
col_hl_txt = GetColorU32(ImLerp(G.Style.Colors[ImGuiCol_Text], item->Color, 0.25f));
}
else
item->Highlight = false;
ImU32 iconColor;
if (hov_legend && icon_bb.Contains(IO.MousePos)) {
ImVec4 colAlpha = item->Color;
colAlpha.w = 0.5f;
iconColor = item->Show ? GetColorU32(colAlpha)
: GetColorU32(ImGuiCol_TextDisabled, 0.5f);
if (IO.MouseClicked[0])
item->Show = !item->Show;
} else {
iconColor = item->Show ? GetColorU32(item->Color) : gp.Col_TxtDis;
}
DrawList.AddRectFilled(icon_bb.Min, icon_bb.Max, iconColor, 1);
const char* label = GetLegendLabel(i);
const char* text_display_end = FindRenderedTextEnd(label, NULL);
if (label != text_display_end)
DrawList.AddText(legend_content_bb.Min + legend_padding + ImVec2(legend_icon_size, i * txt_ht),
item->Show ? (item->Highlight ? col_hl_txt : gp.Col_Txt) : gp.Col_TxtDis, label, text_display_end);
}
}
// render crosshairs
if (HasFlag(plot.Flags, ImPlotFlags_Crosshairs) && gp.Hov_Grid && gp.Hov_Frame &&
!(plot.XAxis.Dragging || any_y_dragging) && !plot.Selecting && !plot.Querying && !hov_legend) {
ImGui::SetMouseCursor(ImGuiMouseCursor_None);
ImVec2 xy = IO.MousePos;
ImVec2 h1(gp.BB_Grid.Min.x, xy.y);
ImVec2 h2(xy.x - 5, xy.y);
ImVec2 h3(xy.x + 5, xy.y);
ImVec2 h4(gp.BB_Grid.Max.x, xy.y);
ImVec2 v1(xy.x, gp.BB_Grid.Min.y);
ImVec2 v2(xy.x, xy.y - 5);
ImVec2 v3(xy.x, xy.y + 5);
ImVec2 v4(xy.x, gp.BB_Grid.Max.y);
DrawList.AddLine(h1, h2, gp.Col_Border);
DrawList.AddLine(h3, h4, gp.Col_Border);
DrawList.AddLine(v1, v2, gp.Col_Border);
DrawList.AddLine(v3, v4, gp.Col_Border);
}
// render mouse pos
if (HasFlag(plot.Flags, ImPlotFlags_MousePos) && gp.Hov_Grid) {
static char buffer[128] = {};
BufferWriter writer(buffer, sizeof(buffer));
writer.Write("%.2f,%.2f", gp.LastMousePos[0].x, gp.LastMousePos[0].y);
if (HasFlag(plot.Flags, ImPlotFlags_Y2Axis)) {
writer.Write(", (%.2f)", gp.LastMousePos[1].y);
}
if (HasFlag(plot.Flags, ImPlotFlags_Y3Axis)) {
writer.Write(", (%.2f)", gp.LastMousePos[2].y);
}
ImVec2 size = CalcTextSize(buffer);
ImVec2 pos = gp.BB_Grid.Max - size - ImVec2(5, 5);
DrawList.AddText(pos, gp.Col_Txt, buffer);
}
PopClipRect();
// render border
DrawList.AddRect(gp.BB_Grid.Min, gp.BB_Grid.Max, gp.Col_Border);
// FIT DATA --------------------------------------------------------------
if (gp.FitThisFrame && (gp.VisibleItemCount > 0 || plot.Queried)) {
if (gp.FitX && !HasFlag(plot.XAxis.Flags, ImAxisFlags_LockMin) && !NanOrInf(gp.ExtentsX.Min)) {
plot.XAxis.Range.Min = gp.ExtentsX.Min;
}
if (gp.FitX && !HasFlag(plot.XAxis.Flags, ImAxisFlags_LockMax) && !NanOrInf(gp.ExtentsX.Max)) {
plot.XAxis.Range.Max = gp.ExtentsX.Max;
}
for (int i = 0; i < MAX_Y_AXES; i++) {
if (gp.FitY[i] && !HasFlag(plot.YAxis[i].Flags, ImAxisFlags_LockMin) && !NanOrInf(gp.ExtentsY[i].Min)) {
plot.YAxis[i].Range.Min = gp.ExtentsY[i].Min;
}
if (gp.FitY[i] && !HasFlag(plot.YAxis[i].Flags, ImAxisFlags_LockMax) && !NanOrInf(gp.ExtentsY[i].Max)) {
plot.YAxis[i].Range.Max = gp.ExtentsY[i].Max;
}
}
}
// CONTEXT MENU -----------------------------------------------------------
if (HasFlag(plot.Flags, ImPlotFlags_ContextMenu) && gp.Hov_Frame && gp.Hov_Grid && IO.MouseDoubleClicked[1] && !hov_legend)
ImGui::OpenPopup("##Context");
if (ImGui::BeginPopup("##Context")) {
PlotContextMenu(plot);
ImGui::EndPopup();
}
// CLEANUP ----------------------------------------------------------------
// Reset legend items
gp.LegendIndices.shrink(0);
// Null current plot/data
gp.CurrentPlot = NULL;
// Reset next plot data
gp.NextPlotData = ImNextPlotData();
// Pop PushID at the end of BeginPlot
PopID();
// End child window
if (!HasFlag(plot.Flags, ImPlotFlags_NoChild))
ImGui::EndChild();
}
//-----------------------------------------------------------------------------
// MISC API
//-----------------------------------------------------------------------------
void SetNextPlotBounds(float x_min, float x_max, float y_min, float y_max, ImGuiCond cond) {
SetNextPlotBoundsX(x_min, x_max, cond);
SetNextPlotBoundsY(y_min, y_max, cond);
}
void SetNextPlotBoundsX(float x_min, float x_max, ImGuiCond cond) {
IM_ASSERT(cond == 0 || ImIsPowerOfTwo(cond)); // Make sure the user doesn't attempt to combine multiple condition flags.
gp.NextPlotData.HasXBounds = true;
gp.NextPlotData.XBoundsCond = cond;
gp.NextPlotData.X.Min = x_min;
gp.NextPlotData.X.Max = x_max;
}
void SetNextPlotBoundsY(float y_min, float y_max, ImGuiCond cond, int y_axis) {
IM_ASSERT_USER_ERROR(y_axis >= 0 && y_axis < MAX_Y_AXES, "y_axis Needs to be between 0 and MAX_Y_AXES");
IM_ASSERT(cond == 0 || ImIsPowerOfTwo(cond)); // Make sure the user doesn't attempt to combine multiple condition flags.
gp.NextPlotData.HasYBounds[y_axis] = true;
gp.NextPlotData.YBoundsCond[y_axis] = cond;
gp.NextPlotData.Y[y_axis].Min = y_min;
gp.NextPlotData.Y[y_axis].Max = y_max;
}
void SetPlotYAxis(int y_axis) {
IM_ASSERT_USER_ERROR(y_axis >= 0 && y_axis < MAX_Y_AXES, "y_axis Needs to be between 0 and MAX_Y_AXES");
IM_ASSERT_USER_ERROR(gp.CurrentPlot != NULL, "SetPlotYAxis() Needs to be called between BeginPlot() and EndPlot()!");
gp.CurrentPlot->CurrentYAxis = y_axis;
}
ImVec2 GetPlotPos() {
IM_ASSERT_USER_ERROR(gp.CurrentPlot != NULL, "GetPlotPos() Needs to be called between BeginPlot() and EndPlot()!");
return gp.BB_Grid.Min;
}
ImVec2 GetPlotSize() {
IM_ASSERT_USER_ERROR(gp.CurrentPlot != NULL, "GetPlotSize() Needs to be called between BeginPlot() and EndPlot()!");
return gp.BB_Grid.GetSize();
}
void PushPlotClipRect() {
IM_ASSERT_USER_ERROR(gp.CurrentPlot != NULL, "PushPlotClipRect() Needs to be called between BeginPlot() and EndPlot()!");
PushClipRect(gp.BB_Grid.Min, gp.BB_Grid.Max, true);
}
void PopPlotClipRect() {
PopClipRect();
}
bool IsPlotHovered() {
IM_ASSERT_USER_ERROR(gp.CurrentPlot != NULL, "IsPlotHovered() Needs to be called between BeginPlot() and EndPlot()!");
return gp.Hov_Grid;
}
ImVec2 GetPlotMousePos(int y_axis_in) {
IM_ASSERT_USER_ERROR(y_axis_in >= -1 && y_axis_in < MAX_Y_AXES, "y_axis needs to between -1 and MAX_Y_AXES");
IM_ASSERT_USER_ERROR(gp.CurrentPlot != NULL, "GetPlotMousePos() Needs to be called between BeginPlot() and EndPlot()!");
const int y_axis = y_axis_in >= 0 ? y_axis_in : gp.CurrentPlot->CurrentYAxis;
return gp.LastMousePos[y_axis];
}
ImPlotBounds GetPlotBounds(int y_axis_in) {
IM_ASSERT_USER_ERROR(y_axis_in >= -1 && y_axis_in < MAX_Y_AXES, "y_axis needs to between -1 and MAX_Y_AXES");
IM_ASSERT_USER_ERROR(gp.CurrentPlot != NULL, "GetPlotBounds() Needs to be called between BeginPlot() and EndPlot()!");
const int y_axis = y_axis_in >= 0 ? y_axis_in : gp.CurrentPlot->CurrentYAxis;
ImPlot& plot = *gp.CurrentPlot;
ImPlotBounds bounds;
bounds.X = plot.XAxis.Range;
bounds.Y = plot.YAxis[y_axis].Range;
return bounds;
}
bool IsPlotQueried() {
IM_ASSERT_USER_ERROR(gp.CurrentPlot != NULL, "IsPlotQueried() Needs to be called between BeginPlot() and EndPlot()!");
return gp.CurrentPlot->Queried;
}
ImPlotBounds GetPlotQuery(int y_axis_in) {
IM_ASSERT_USER_ERROR(y_axis_in >= -1 && y_axis_in < MAX_Y_AXES, "y_axis needs to between -1 and MAX_Y_AXES");
IM_ASSERT_USER_ERROR(gp.CurrentPlot != NULL, "GetPlotQuery() Needs to be called between BeginPlot() and EndPlot()!");
ImPlot& plot = *gp.CurrentPlot;
const int y_axis = y_axis_in >= 0 ? y_axis_in : gp.CurrentPlot->CurrentYAxis;
UpdateTransformCache();
ImVec2 p1 = PixelsToPlot(plot.QueryRect.Min + gp.BB_Grid.Min, y_axis);
ImVec2 p2 = PixelsToPlot(plot.QueryRect.Max + gp.BB_Grid.Min, y_axis);
ImPlotBounds result;
result.X.Min = ImMin(p1.x, p2.x);
result.X.Max = ImMax(p1.x, p2.x);
result.Y.Min = ImMin(p1.y, p2.y);
result.Y.Max = ImMax(p1.y, p2.y);
return result;
}
//-----------------------------------------------------------------------------
// STYLING
//-----------------------------------------------------------------------------
struct ImPlotStyleVarInfo {
ImGuiDataType Type;
ImU32 Count;
ImU32 Offset;
void* GetVarPtr(ImPlotStyle* style) const { return (void*)((unsigned char*)style + Offset); }
};
static const ImPlotStyleVarInfo GPlotStyleVarInfo[] =
{
{ ImGuiDataType_Float, 1, (ImU32)IM_OFFSETOF(ImPlotStyle, LineWeight) }, // ImPlotStyleVar_LineWeight
{ ImGuiDataType_S32, 1, (ImU32)IM_OFFSETOF(ImPlotStyle, Marker) }, // ImPlotStyleVar_Marker
{ ImGuiDataType_Float, 1, (ImU32)IM_OFFSETOF(ImPlotStyle, MarkerSize) }, // ImPlotStyleVar_MarkerSize
{ ImGuiDataType_Float, 1, (ImU32)IM_OFFSETOF(ImPlotStyle, MarkerWeight) }, // ImPlotStyleVar_MarkerWeight
{ ImGuiDataType_Float, 1, (ImU32)IM_OFFSETOF(ImPlotStyle, ErrorBarSize) }, // ImPlotStyleVar_ErrorBarSize
{ ImGuiDataType_Float, 1, (ImU32)IM_OFFSETOF(ImPlotStyle, ErrorBarWeight) }, // ImPlotStyleVar_ErrorBarWeight
{ ImGuiDataType_Float, 1, (ImU32)IM_OFFSETOF(ImPlotStyle, DigitalBitHeight) } // ImPlotStyleVar_DigitalBitHeight
};
static const ImPlotStyleVarInfo* GetPlotStyleVarInfo(ImPlotStyleVar idx)
{
IM_ASSERT(idx >= 0 && idx < ImPlotStyleVar_COUNT);
IM_ASSERT(IM_ARRAYSIZE(GPlotStyleVarInfo) == ImPlotStyleVar_COUNT);
return &GPlotStyleVarInfo[idx];
}
ImPlotStyle& GetPlotStyle() {
return gp.Style;
}
void SetPlotPalette(const ImVec4* colors, int num_colors) {
gp.ColorMap.shrink(0);
gp.ColorMap.reserve(num_colors);
for (int i = 0; i < num_colors; ++i) {
gp.ColorMap.push_back(colors[i]);
}
}
/// Returns the next unused default plot color
void RestorePlotPalette() {
static ImVec4 default_colors[10] = {
{(0.0F), (0.7490196228F), (1.0F), (1.0F)}, // Blues::DeepSkyBlue,
{(1.0F), (0.0F), (0.0F), (1.0F)}, // Reds::Red,
{(0.4980392158F), (1.0F), (0.0F), (1.0F)}, // Greens::Chartreuse,
{(1.0F), (1.0F), (0.0F), (1.0F)}, // Yellows::Yellow,
{(0.0F), (1.0F), (1.0F), (1.0F)}, // Cyans::Cyan,
{(1.0F), (0.6470588446F), (0.0F), (1.0F)}, // Oranges::Orange,
{(1.0F), (0.0F), (1.0F), (1.0F)}, // Purples::Magenta,
{(0.5411764979F), (0.1686274558F), (0.8862745166F), (1.0F)}, // Purples::BlueViolet,
{(0.5f), (0.5f), (0.5f), (1.0F)}, // Grays::Gray50,
{(0.8235294223F), (0.7058823705F), (0.5490196347F), (1.0F)} // Browns::Tan
};
SetPlotPalette(default_colors, 10);
}
void PushPlotColor(ImPlotCol idx, ImU32 col) {
ImGuiColorMod backup;
backup.Col = idx;
backup.BackupValue = gp.Style.Colors[idx];
gp.ColorModifiers.push_back(backup);
gp.Style.Colors[idx] = ColorConvertU32ToFloat4(col);
}
void PushPlotColor(ImPlotCol idx, const ImVec4& col) {
ImGuiColorMod backup;
backup.Col = idx;
backup.BackupValue = gp.Style.Colors[idx];
gp.ColorModifiers.push_back(backup);
gp.Style.Colors[idx] = col;
}
void PopPlotColor(int count) {
while (count > 0)
{
ImGuiColorMod& backup = gp.ColorModifiers.back();
gp.Style.Colors[backup.Col] = backup.BackupValue;
gp.ColorModifiers.pop_back();
count--;
}
}
void PushPlotStyleVar(ImPlotStyleVar idx, float val) {
const ImPlotStyleVarInfo* var_info = GetPlotStyleVarInfo(idx);
if (var_info->Type == ImGuiDataType_Float && var_info->Count == 1) {
float* pvar = (float*)var_info->GetVarPtr(&gp.Style);
gp.StyleModifiers.push_back(ImGuiStyleMod(idx, *pvar));
*pvar = val;
return;
}
IM_ASSERT(0 && "Called PushPlotStyleVar() float variant but variable is not a float!");
}
void PushPlotStyleVar(ImPlotStyleVar idx, int val) {
const ImPlotStyleVarInfo* var_info = GetPlotStyleVarInfo(idx);
if (var_info->Type == ImGuiDataType_S32 && var_info->Count == 1) {
int* pvar = (int*)var_info->GetVarPtr(&gp.Style);
gp.StyleModifiers.push_back(ImGuiStyleMod(idx, *pvar));
*pvar = val;
return;
}
else if (var_info->Type == ImGuiDataType_Float && var_info->Count == 1) {
float* pvar = (float*)var_info->GetVarPtr(&gp.Style);
gp.StyleModifiers.push_back(ImGuiStyleMod(idx, *pvar));
*pvar = (float)val;
return;
}
IM_ASSERT(0 && "Called PushPlotStyleVar() int variant but variable is not a int!");
}
void PopPlotStyleVar(int count) {
while (count > 0) {
ImGuiStyleMod& backup = gp.StyleModifiers.back();
const ImPlotStyleVarInfo* info = GetPlotStyleVarInfo(backup.VarIdx);
void* data = info->GetVarPtr(&gp.Style);
if (info->Type == ImGuiDataType_Float && info->Count == 1) {
((float*)data)[0] = backup.BackupFloat[0];
}
else if (info->Type == ImGuiDataType_Float && info->Count == 2) {
((float*)data)[0] = backup.BackupFloat[0];
((float*)data)[1] = backup.BackupFloat[1];
}
else if (info->Type == ImGuiDataType_S32 && info->Count == 1) {
((int*)data)[0] = backup.BackupInt[0];
}
gp.StyleModifiers.pop_back();
count--;
}
}
//-----------------------------------------------------------------------------
// RENDERING FUNCTIONS
//-----------------------------------------------------------------------------
#define SQRT_1_2 0.70710678118f
#define SQRT_3_2 0.86602540378f
inline void TransformMarker(ImVec2* points, int n, const ImVec2& c, float s) {
for (int i = 0; i < n; ++i) {
points[i].x = c.x + points[i].x * s;
points[i].y = c.y + points[i].y * s;
}
}
inline void MarkerGeneral(ImDrawList& DrawList, ImVec2* points, int n, const ImVec2& c, float s, bool outline, ImU32 col_outline, bool fill, ImU32 col_fill, float weight) {
TransformMarker(points, n, c, s);
if (fill)
DrawList.AddConvexPolyFilled(points, n, col_fill);
if (outline && !(fill && col_outline == col_fill)) {
for (int i = 0; i < n; ++i)
DrawList.AddLine(points[i], points[(i+1)%n], col_outline, weight);
}
}
inline void MarkerCircle(ImDrawList& DrawList, const ImVec2& c, float s, bool outline, ImU32 col_outline, bool fill, ImU32 col_fill, float weight) {
ImVec2 marker[10] = {{1.0f, 0.0f},
{0.809017f, 0.58778524f},
{0.30901697f, 0.95105654f},
{-0.30901703f, 0.9510565f},
{-0.80901706f, 0.5877852f},
{-1.0f, 0.0f},
{-0.80901694f, -0.58778536f},
{-0.3090171f, -0.9510565f},
{0.30901712f, -0.9510565f},
{0.80901694f, -0.5877853f}};
MarkerGeneral(DrawList, marker, 10, c, s, outline, col_outline, fill, col_fill, weight);
}
inline void MarkerDiamond(ImDrawList& DrawList, const ImVec2& c, float s, bool outline, ImU32 col_outline, bool fill, ImU32 col_fill, float weight) {
ImVec2 marker[4] = {{1, 0}, {0, -1}, {-1, 0}, {0, 1}};
MarkerGeneral(DrawList, marker, 4, c, s, outline, col_outline, fill, col_fill, weight);
}
inline void MarkerSquare(ImDrawList& DrawList, const ImVec2& c, float s, bool outline, ImU32 col_outline, bool fill, ImU32 col_fill, float weight) {
ImVec2 marker[4] = {{SQRT_1_2,SQRT_1_2},{SQRT_1_2,-SQRT_1_2},{-SQRT_1_2,-SQRT_1_2},{-SQRT_1_2,SQRT_1_2}};
MarkerGeneral(DrawList, marker, 4, c, s, outline, col_outline, fill, col_fill, weight);
}
inline void MarkerUp(ImDrawList& DrawList, const ImVec2& c, float s, bool outline, ImU32 col_outline, bool fill, ImU32 col_fill, float weight) {
ImVec2 marker[3] = {{SQRT_3_2,0.5f},{0,-1},{-SQRT_3_2,0.5f}};
MarkerGeneral(DrawList, marker, 3, c, s, outline, col_outline, fill, col_fill, weight);
}
inline void MarkerDown(ImDrawList& DrawList, const ImVec2& c, float s, bool outline, ImU32 col_outline, bool fill, ImU32 col_fill, float weight) {
ImVec2 marker[3] = {{SQRT_3_2,-0.5f},{0,1},{-SQRT_3_2,-0.5f}};
MarkerGeneral(DrawList, marker, 3, c, s, outline, col_outline, fill, col_fill, weight);
}
inline void MarkerLeft(ImDrawList& DrawList, const ImVec2& c, float s, bool outline, ImU32 col_outline, bool fill, ImU32 col_fill, float weight) {
ImVec2 marker[3] = {{-1,0}, {0.5, SQRT_3_2}, {0.5, -SQRT_3_2}};
MarkerGeneral(DrawList, marker, 3, c, s, outline, col_outline, fill, col_fill, weight);
}
inline void MarkerRight(ImDrawList& DrawList, const ImVec2& c, float s, bool outline, ImU32 col_outline, bool fill, ImU32 col_fill, float weight) {
ImVec2 marker[3] = {{1,0}, {-0.5, SQRT_3_2}, {-0.5, -SQRT_3_2}};
MarkerGeneral(DrawList, marker, 3, c, s, outline, col_outline, fill, col_fill, weight);
}
inline void MarkerAsterisk(ImDrawList& DrawList, const ImVec2& c, float s, bool outline, ImU32 col_outline, bool fill, ImU32 col_fill, float weight) {
ImVec2 marker[6] = {{SQRT_3_2, 0.5f}, {0, -1}, {-SQRT_3_2, 0.5f}, {SQRT_3_2, -0.5f}, {0, 1}, {-SQRT_3_2, -0.5f}};
TransformMarker(marker, 6, c, s);
DrawList.AddLine(marker[0], marker[5], col_outline, weight);
DrawList.AddLine(marker[1], marker[4], col_outline, weight);
DrawList.AddLine(marker[2], marker[3], col_outline, weight);
}
inline void MarkerPlus(ImDrawList& DrawList, const ImVec2& c, float s, bool outline, ImU32 col_outline, bool fill, ImU32 col_fill, float weight) {
ImVec2 marker[4] = {{1, 0}, {0, -1}, {-1, 0}, {0, 1}};
TransformMarker(marker, 4, c, s);
DrawList.AddLine(marker[0], marker[2], col_outline, weight);
DrawList.AddLine(marker[1], marker[3], col_outline, weight);
}
inline void MarkerCross(ImDrawList& DrawList, const ImVec2& c, float s, bool outline, ImU32 col_outline, bool fill, ImU32 col_fill, float weight) {
ImVec2 marker[4] = {{SQRT_1_2,SQRT_1_2},{SQRT_1_2,-SQRT_1_2},{-SQRT_1_2,-SQRT_1_2},{-SQRT_1_2,SQRT_1_2}};
TransformMarker(marker, 4, c, s);
DrawList.AddLine(marker[0], marker[2], col_outline, weight);
DrawList.AddLine(marker[1], marker[3], col_outline, weight);
}
template <typename Transformer, typename Getter>
inline void RenderMarkers(Transformer transformer, ImDrawList& DrawList, Getter getter, int count, int offset, bool rend_mk_line, ImU32 col_mk_line, bool rend_mk_fill, ImU32 col_mk_fill, bool cull) {
int idx = offset;
for (int i = 0; i < count; ++i) {
ImVec2 c;
c = transformer(getter(idx));
idx = (idx + 1) % count;
if (!cull || gp.BB_Grid.Contains(c)) {
// TODO: Optimize the loop and if statements, this is atrocious
if (HasFlag(gp.Style.Marker, ImMarker_Circle))
MarkerCircle(DrawList, c, gp.Style.MarkerSize, rend_mk_line, col_mk_line, rend_mk_fill, col_mk_fill, gp.Style.MarkerWeight);
if (HasFlag(gp.Style.Marker, ImMarker_Square))
MarkerSquare(DrawList, c, gp.Style.MarkerSize, rend_mk_line, col_mk_line, rend_mk_fill, col_mk_fill, gp.Style.MarkerWeight);
if (HasFlag(gp.Style.Marker, ImMarker_Diamond))
MarkerDiamond(DrawList, c, gp.Style.MarkerSize, rend_mk_line, col_mk_line, rend_mk_fill, col_mk_fill, gp.Style.MarkerWeight);
if (HasFlag(gp.Style.Marker, ImMarker_Up))
MarkerUp(DrawList, c, gp.Style.MarkerSize, rend_mk_line, col_mk_line, rend_mk_fill, col_mk_fill, gp.Style.MarkerWeight);
if (HasFlag(gp.Style.Marker, ImMarker_Down))
MarkerDown(DrawList, c, gp.Style.MarkerSize, rend_mk_line, col_mk_line, rend_mk_fill, col_mk_fill, gp.Style.MarkerWeight);
if (HasFlag(gp.Style.Marker, ImMarker_Left))
MarkerLeft(DrawList, c, gp.Style.MarkerSize, rend_mk_line, col_mk_line, rend_mk_fill, col_mk_fill, gp.Style.MarkerWeight);
if (HasFlag(gp.Style.Marker, ImMarker_Right))
MarkerRight(DrawList, c, gp.Style.MarkerSize, rend_mk_line, col_mk_line, rend_mk_fill, col_mk_fill, gp.Style.MarkerWeight);
if (HasFlag(gp.Style.Marker, ImMarker_Cross))
MarkerCross(DrawList, c, gp.Style.MarkerSize, rend_mk_line, col_mk_line, rend_mk_fill, col_mk_fill, gp.Style.MarkerWeight);
if (HasFlag(gp.Style.Marker, ImMarker_Plus))
MarkerPlus(DrawList, c, gp.Style.MarkerSize, rend_mk_line, col_mk_line, rend_mk_fill, col_mk_fill, gp.Style.MarkerWeight);
if (HasFlag(gp.Style.Marker, ImMarker_Asterisk))
MarkerAsterisk(DrawList, c, gp.Style.MarkerSize, rend_mk_line, col_mk_line, rend_mk_fill, col_mk_fill, gp.Style.MarkerWeight);
}
}
}
inline void RenderLine(ImDrawList& DrawList, const ImVec2& p1, const ImVec2& p2, float line_weight, ImU32 col_line, ImVec2 uv) {
// http://assemblyrequired.crashworks.org/timing-square-root/
float dx = p2.x - p1.x;
float dy = p2.y - p1.y;
IM_NORMALIZE2F_OVER_ZERO(dx, dy);
dx *= (line_weight * 0.5f);
dy *= (line_weight * 0.5f);
DrawList._VtxWritePtr[0].pos.x = p1.x + dy;
DrawList._VtxWritePtr[0].pos.y = p1.y - dx;
DrawList._VtxWritePtr[0].uv = uv;
DrawList._VtxWritePtr[0].col = col_line;
DrawList._VtxWritePtr[1].pos.x = p2.x + dy;
DrawList._VtxWritePtr[1].pos.y = p2.y - dx;
DrawList._VtxWritePtr[1].uv = uv;
DrawList._VtxWritePtr[1].col = col_line;
DrawList._VtxWritePtr[2].pos.x = p2.x - dy;
DrawList._VtxWritePtr[2].pos.y = p2.y + dx;
DrawList._VtxWritePtr[2].uv = uv;
DrawList._VtxWritePtr[2].col = col_line;
DrawList._VtxWritePtr[3].pos.x = p1.x - dy;
DrawList._VtxWritePtr[3].pos.y = p1.y + dx;
DrawList._VtxWritePtr[3].uv = uv;
DrawList._VtxWritePtr[3].col = col_line;
DrawList._VtxWritePtr += 4;
DrawList._IdxWritePtr[0] = (ImDrawIdx)(DrawList._VtxCurrentIdx);
DrawList._IdxWritePtr[1] = (ImDrawIdx)(DrawList._VtxCurrentIdx + 1);
DrawList._IdxWritePtr[2] = (ImDrawIdx)(DrawList._VtxCurrentIdx + 2);
DrawList._IdxWritePtr[3] = (ImDrawIdx)(DrawList._VtxCurrentIdx);
DrawList._IdxWritePtr[4] = (ImDrawIdx)(DrawList._VtxCurrentIdx + 2);
DrawList._IdxWritePtr[5] = (ImDrawIdx)(DrawList._VtxCurrentIdx + 3);
DrawList._IdxWritePtr += 6;
DrawList._VtxCurrentIdx += 4;
}
inline void RenderLineAA(ImDrawList& DrawList, const ImVec2& p1, const ImVec2& p2, float line_weight, ImU32 col_line) {
DrawList.AddLine(p1, p2, col_line, line_weight);
}
template <typename Transformer, typename Getter>
inline void RenderLines(Transformer transformer, ImDrawList& DrawList, Getter getter, int count, int offset, float line_weight, ImU32 col_line, bool cull) {
// render line segments
const int segments = count - 1;
int i1 = offset;
ImVec2 p1, p2;
if (HasFlag(gp.CurrentPlot->Flags, ImPlotFlags_AntiAliased)) {
for (int s = 0; s < segments; ++s) {
const int i2 = (i1 + 1) % count;
p1 = transformer(getter(i1));
p2 = transformer(getter(i2));
i1 = i2;
if (!cull || gp.BB_Grid.Contains(p1) || gp.BB_Grid.Contains(p2))
RenderLineAA(DrawList, p1, p2, line_weight, col_line);
}
}
else {
const ImVec2 uv = DrawList._Data->TexUvWhitePixel;
DrawList.PrimReserve(segments * 6, segments * 4);
int segments_culled = 0;
for (int s = 0; s < segments; ++s) {
const int i2 = (i1 + 1) % count;
p1 = transformer(getter(i1));
p2 = transformer(getter(i2));
i1 = i2;
if (!cull || gp.BB_Grid.Contains(p1) || gp.BB_Grid.Contains(p2))
RenderLine(DrawList, p1, p2, line_weight, col_line, uv);
else
segments_culled++;
}
if (segments_culled > 0)
DrawList.PrimUnreserve(segments_culled * 6, segments_culled * 4);
}
}
//-----------------------------------------------------------------------------
// DATA GETTERS
//-----------------------------------------------------------------------------
inline float StrideIndex(const float* data, int idx, int stride) {
return *(const float*)(const void*)((const unsigned char*)data + (size_t)idx * stride);
}
struct GetterYs {
GetterYs(const float* ys, int stride) { Ys = ys; Stride = stride; }
const float* Ys;
int Stride;
inline ImVec2 operator()(int idx) {
return ImVec2((float)idx, StrideIndex(Ys, idx, Stride));
}
};
struct Getter2D {
Getter2D(const float* xs, const float* ys, int stride) { Xs = xs; Ys = ys; Stride = stride; }
const float* Xs;
const float* Ys;
int Stride;
inline ImVec2 operator()(int idx) {
return ImVec2(StrideIndex(Xs, idx, Stride), StrideIndex(Ys, idx, Stride));
}
};
struct GetterImVec2 {
GetterImVec2(const ImVec2* data) { Data = data; }
inline ImVec2 operator()(int idx) { return Data[idx]; }
const ImVec2* Data;
};
struct GetterFuncPtrImVec2 {
GetterFuncPtrImVec2(ImVec2 (*g)(void* data, int idx), void* d) { getter = g; data = d;}
ImVec2 operator()(int idx) { return getter(data, idx); }
ImVec2 (*getter)(void* data, int idx);
void* data;
};
struct GetterFuncPtrImVec4 {
GetterFuncPtrImVec4(ImVec4 (*g)(void* data, int idx), void* d) { getter = g; data = d;}
ImVec4 operator()(int idx) { return getter(data, idx); }
ImVec4 (*getter)(void* data, int idx);
void* data;
};
//-----------------------------------------------------------------------------
// PLOT
//-----------------------------------------------------------------------------
template <typename Getter>
inline void PlotEx(const char* label_id, Getter getter, int count, int offset)
{
IM_ASSERT_USER_ERROR(gp.CurrentPlot != NULL, "Plot() Needs to be called between BeginPlot() and EndPlot()!");
ImPlot* plot = gp.CurrentPlot;
const int y_axis = plot->CurrentYAxis;
ImPlotItem* item = RegisterItem(label_id);
if (!item->Show)
return;
ImDrawList & DrawList = *ImGui::GetWindowDrawList();
const bool rend_line = gp.Style.Colors[ImPlotCol_Line].w != 0 && gp.Style.LineWeight > 0;
const bool rend_mk_line = gp.Style.Colors[ImPlotCol_MarkerOutline].w != 0 && gp.Style.MarkerWeight > 0;
const bool rend_mk_fill = gp.Style.Colors[ImPlotCol_MarkerFill].w != 0;
ImU32 col_line = gp.Style.Colors[ImPlotCol_Line].w == -1 ? GetColorU32(item->Color) : GetColorU32(gp.Style.Colors[ImPlotCol_Line]);
ImU32 col_mk_line = gp.Style.Colors[ImPlotCol_MarkerOutline].w == -1 ? col_line : GetColorU32(gp.Style.Colors[ImPlotCol_MarkerOutline]);
ImU32 col_mk_fill = gp.Style.Colors[ImPlotCol_MarkerFill].w == -1 ? col_line : GetColorU32(gp.Style.Colors[ImPlotCol_MarkerFill]);
const float line_weight = item->Highlight ? gp.Style.LineWeight * 2 : gp.Style.LineWeight;
if (gp.Style.Colors[ImPlotCol_Line].w != -1)
item->Color = gp.Style.Colors[ImPlotCol_Line];
bool cull = HasFlag(plot->Flags, ImPlotFlags_CullData);
// find data extents
if (gp.FitThisFrame) {
for (int i = 0; i < count; ++i) {
ImVec2 p = getter(i);
FitPoint(p);
}
}
PushPlotClipRect();
if (count > 1 && rend_line) {
if (HasFlag(plot->XAxis.Flags, ImAxisFlags_LogScale) && HasFlag(plot->YAxis[y_axis].Flags, ImAxisFlags_LogScale))
RenderLines(Plt2PixLogLog(y_axis), DrawList, getter, count, offset, line_weight, col_line, cull);
else if (HasFlag(plot->XAxis.Flags, ImAxisFlags_LogScale))
RenderLines(Plt2PixLogLin(y_axis), DrawList, getter, count, offset, line_weight, col_line, cull);
else if (HasFlag(plot->YAxis[y_axis].Flags, ImAxisFlags_LogScale))
RenderLines(Plt2PixLinLog(y_axis), DrawList, getter, count, offset, line_weight, col_line, cull);
else
RenderLines(Plt2PixLinLin(y_axis), DrawList, getter, count, offset, line_weight, col_line, cull);
}
// render markers
if (gp.Style.Marker != ImMarker_None) {
if (HasFlag(plot->XAxis.Flags, ImAxisFlags_LogScale) && HasFlag(plot->YAxis[y_axis].Flags, ImAxisFlags_LogScale))
RenderMarkers(Plt2PixLogLog(y_axis), DrawList, getter, count, offset, rend_mk_line, col_mk_line, rend_mk_fill, col_mk_fill, cull);
else if (HasFlag(plot->XAxis.Flags, ImAxisFlags_LogScale))
RenderMarkers(Plt2PixLogLin(y_axis), DrawList, getter, count, offset, rend_mk_line, col_mk_line, rend_mk_fill, col_mk_fill, cull);
else if (HasFlag(plot->YAxis[y_axis].Flags, ImAxisFlags_LogScale))
RenderMarkers(Plt2PixLinLog(y_axis), DrawList, getter, count, offset, rend_mk_line, col_mk_line, rend_mk_fill, col_mk_fill, cull);
else
RenderMarkers(Plt2PixLinLin(y_axis), DrawList, getter, count, offset, rend_mk_line, col_mk_line, rend_mk_fill, col_mk_fill, cull);
}
PopPlotClipRect();
}
void Plot(const char* label_id, const float* values, int count, int offset, int stride) {
GetterYs getter(values,stride);
PlotEx(label_id, getter, count, offset);
}
void Plot(const char* label_id, const float* xs, const float* ys, int count, int offset, int stride) {
Getter2D getter(xs,ys,stride);
return PlotEx(label_id, getter, count, offset);
}
void Plot(const char* label_id, const ImVec2* data, int count, int offset) {
GetterImVec2 getter(data);
return PlotEx(label_id, getter, count, offset);
}
void Plot(const char* label_id, ImVec2 (*getter_func)(void* data, int idx), void* data, int count, int offset) {
GetterFuncPtrImVec2 getter(getter_func,data);
return PlotEx(label_id, getter, count, offset);
}
//-----------------------------------------------------------------------------
// PLOT BAR
//-----------------------------------------------------------------------------
struct GetterBarV {
const float* Ys; float XShift; int Stride;
GetterBarV(const float* ys, float xshift, int stride) { Ys = ys; XShift = xshift; Stride = stride; }
inline ImVec2 operator()(int idx) { return ImVec2((float)idx + XShift, StrideIndex(Ys, idx, Stride)); }
};
struct GetterBarH {
const float* Xs; float YShift; int Stride;
GetterBarH(const float* xs, float yshift, int stride) { Xs = xs; YShift = yshift; Stride = stride; }
inline ImVec2 operator()(int idx) { return ImVec2(StrideIndex(Xs, idx, Stride), (float)idx + YShift); }
};
template <typename Getter>
void PlotBarEx(const char* label_id, Getter getter, int count, float width, int offset) {
IM_ASSERT_USER_ERROR(gp.CurrentPlot != NULL, "PlotBar() Needs to be called between BeginPlot() and EndPlot()!");
ImPlotItem* item = RegisterItem(label_id);
if (!item->Show)
return;
ImDrawList & DrawList = *GetWindowDrawList();
bool rend_line = gp.Style.Colors[ImPlotCol_Line].w != 0 && gp.Style.LineWeight > 0;
bool rend_fill = gp.Style.Colors[ImPlotCol_Fill].w != 0;
ImU32 col_line = gp.Style.Colors[ImPlotCol_Line].w == -1 ? GetColorU32(item->Color) : GetColorU32(gp.Style.Colors[ImPlotCol_Line]);
ImU32 col_fill = gp.Style.Colors[ImPlotCol_Fill].w == -1 ? col_line : GetColorU32(gp.Style.Colors[ImPlotCol_Fill]);
if (rend_fill && col_line == col_fill)
rend_line = false;
if (gp.Style.Colors[ImPlotCol_Line].w != -1)
item->Color = gp.Style.Colors[ImPlotCol_Line];
PushPlotClipRect();
float half_width = width * 0.5f;
// find data extents
if (gp.FitThisFrame) {
for (int i = 0; i < count; ++i) {
ImVec2 p = getter(i);
FitPoint(ImVec2(p.x - half_width, p.y));
FitPoint(ImVec2(p.x + half_width, 0));
}
}
int idx = offset;
for (int i = 0; i < count; ++i) {
ImVec2 p;
p = getter(idx);
idx = (idx + 1) % count;
if (p.y == 0)
continue;
ImVec2 a = PlotToPixels(p.x - half_width, p.y);
ImVec2 b = PlotToPixels(p.x + half_width, 0);
if (rend_fill)
DrawList.AddRectFilled(a, b, col_fill);
if (rend_line)
DrawList.AddRect(a, b, col_line);
}
PopPlotClipRect();
}
void PlotBar(const char* label_id, const float* values, int count, float width, float shift, int offset, int stride) {
GetterBarV getter(values,shift,stride);
PlotBarEx(label_id, getter, count, width, offset);
}
void PlotBar(const char* label_id, const float* xs, const float* ys, int count, float width, int offset, int stride) {
Getter2D getter(xs,ys,stride);
PlotBarEx(label_id, getter, count, width, offset);
}
void PlotBar(const char* label_id, ImVec2 (*getter_func)(void* data, int idx), void* data, int count, float width, int offset) {
GetterFuncPtrImVec2 getter(getter_func, data);
PlotBarEx(label_id, getter, count, width, offset);
}
//-----------------------------------------------------------------------------
template <typename Getter>
void PlotBarHEx(const char* label_id, Getter getter, int count, float height, int offset) {
IM_ASSERT_USER_ERROR(gp.CurrentPlot != NULL, "PlotBarH() Needs to be called between BeginPlot() and EndPlot()!");
ImPlotItem* item = RegisterItem(label_id);
if (!item->Show)
return;
ImDrawList & DrawList = *GetWindowDrawList();
bool rend_line = gp.Style.Colors[ImPlotCol_Line].w != 0 && gp.Style.LineWeight > 0;
bool rend_fill = gp.Style.Colors[ImPlotCol_Fill].w != 0;
ImU32 col_line = gp.Style.Colors[ImPlotCol_Line].w == -1 ? GetColorU32(item->Color) : GetColorU32(gp.Style.Colors[ImPlotCol_Line]);
ImU32 col_fill = gp.Style.Colors[ImPlotCol_Fill].w == -1 ? col_line : GetColorU32(gp.Style.Colors[ImPlotCol_Fill]);
if (rend_fill && col_line == col_fill)
rend_line = false;
if (gp.Style.Colors[ImPlotCol_Line].w != -1)
item->Color = gp.Style.Colors[ImPlotCol_Line];
PushPlotClipRect();
float half_height = height * 0.5f;
// find data extents
if (gp.FitThisFrame) {
for (int i = 0; i < count; ++i) {
ImVec2 p = getter(i);
FitPoint(ImVec2(0, p.y - half_height));
FitPoint(ImVec2(p.x, p.y + half_height));
}
}
int idx = offset;
for (int i = 0; i < count; ++i) {
ImVec2 p;
p = getter(idx);
idx = (idx + 1) % count;
if (p.x == 0)
continue;
ImVec2 a = PlotToPixels(0, p.y - half_height);
ImVec2 b = PlotToPixels(p.x, p.y + half_height);
if (rend_fill)
DrawList.AddRectFilled(a, b, col_fill);
if (rend_line)
DrawList.AddRect(a, b, col_line);
}
PopPlotClipRect();
}
void PlotBarH(const char* label_id, const float* values, int count, float height, float shift, int offset, int stride) {
GetterBarH getter(values,shift,stride);
PlotBarHEx(label_id, getter, count, height, offset);
}
void PlotBarH(const char* label_id, const float* xs, const float* ys, int count, float height, int offset, int stride) {
Getter2D getter(xs,ys,stride);
PlotBarHEx(label_id, getter, count, height, offset);
}
void PlotBarH(const char* label_id, ImVec2 (*getter_func)(void* data, int idx), void* data, int count, float height, int offset) {
GetterFuncPtrImVec2 getter(getter_func, data);
PlotBarHEx(label_id, getter, count, height, offset);
}
//-----------------------------------------------------------------------------
// PLOT ERROR BARS
//-----------------------------------------------------------------------------
struct GetterError {
const float* Xs; const float* Ys; const float* Neg; const float* Pos; int Stride;
GetterError(const float* xs, const float* ys, const float* neg, const float* pos, int stride) {
Xs = xs; Ys = ys; Neg = neg; Pos = pos; Stride = stride;
}
ImVec4 operator()(int idx) {
return ImVec4(StrideIndex(Xs, idx, Stride),
StrideIndex(Ys, idx, Stride),
StrideIndex(Neg, idx, Stride),
StrideIndex(Pos, idx, Stride));
}
};
template <typename Getter>
void PlotErrorBarsEx(const char* label_id, Getter getter, int count, int offset) {
IM_ASSERT_USER_ERROR(gp.CurrentPlot != NULL, "PlotErrorBars() Needs to be called between BeginPlot() and EndPlot()!");
ImGuiID id = GetID(label_id);
ImPlotItem* item = gp.CurrentPlot->Items.GetByKey(id);
if (item != NULL && item->Show == false)
return;
ImDrawList & DrawList = *GetWindowDrawList();
PushPlotClipRect();
const ImU32 col = gp.Style.Colors[ImPlotCol_ErrorBar].w == -1 ? GetColorU32(ImGuiCol_Text) : GetColorU32(gp.Style.Colors[ImPlotCol_ErrorBar]);
const bool rend_whisker = gp.Style.ErrorBarSize > 0;
const float half_whisker = gp.Style.ErrorBarSize * 0.5f;
// find data extents
if (gp.FitThisFrame) {
for (int i = 0; i < count; ++i) {
ImVec4 e = getter(i);
FitPoint(ImVec2(e.x , e.y - e.z));
FitPoint(ImVec2(e.x , e.y + e.w ));
}
}
int idx = offset;
for (int i = 0; i < count; ++i) {
ImVec4 e;
e = getter(idx);
idx = (idx + 1) % count;
ImVec2 p1 = PlotToPixels(e.x, e.y - e.z);
ImVec2 p2 = PlotToPixels(e.x, e.y + e.w);
DrawList.AddLine(p1,p2,col, gp.Style.ErrorBarWeight);
if (rend_whisker) {
DrawList.AddLine(p1 - ImVec2(half_whisker, 0), p1 + ImVec2(half_whisker, 0), col, gp.Style.ErrorBarWeight);
DrawList.AddLine(p2 - ImVec2(half_whisker, 0), p2 + ImVec2(half_whisker, 0), col, gp.Style.ErrorBarWeight);
}
}
PopPlotClipRect();
}
void PlotErrorBars(const char* label_id, const float* xs, const float* ys, const float* err, int count, int offset, int stride) {
GetterError getter(xs, ys, err, err, stride);
PlotErrorBarsEx(label_id, getter, count, offset);
}
void PlotErrorBars(const char* label_id, const float* xs, const float* ys, const float* neg, const float* pos, int count, int offset, int stride) {
GetterError getter(xs, ys, neg, pos, stride);
PlotErrorBarsEx(label_id, getter, count, offset);
}
void PlotErrorBars(const char* label_id, ImVec4 (*getter_func)(void* data, int idx), void* data, int count, int offset) {
GetterFuncPtrImVec4 getter(getter_func, data);
PlotErrorBarsEx(label_id, getter, count, offset);
}
//-----------------------------------------------------------------------------
// PLOT MISC
//-----------------------------------------------------------------------------
inline void DrawPieSlice(ImDrawList& DrawList, const ImVec2& center, float radius, float a0, float a1, ImU32 col) {
static const float resolution = 50 / (2 * IM_PI);
static ImVec2 buffer[50];
buffer[0] = PlotToPixels(center);
int n = ImMax(3, (int)((a1 - a0) * resolution));
float da = (a1 - a0) / (n - 1);
for (int i = 0; i < n; ++i) {
float a = a0 + i * da;
buffer[i + 1] = PlotToPixels(center.x + radius * cos(a), center.y + radius * sin(a));
}
DrawList.AddConvexPolyFilled(buffer, n + 1, col);
}
void PlotPieChart(const char** label_ids, float* values, int count, const ImVec2& center, float radius, bool show_percents, float angle0) {
IM_ASSERT_USER_ERROR(gp.CurrentPlot != NULL, "PlotPieChart() Needs to be called between BeginPlot() and EndPlot()!");
ImDrawList & DrawList = *GetWindowDrawList();
float sum = 0;
for (int i = 0; i < count; ++i)
sum += values[i];
const bool normalize = sum > 1.0f;
PushPlotClipRect();
float a0 = angle0 * 2 * IM_PI / 360.0f;
float a1 = angle0 * 2 * IM_PI / 360.0f;
for (int i = 0; i < count; ++i) {
ImPlotItem* item = RegisterItem(label_ids[i]);
ImU32 col = GetColorU32(item->Color);
float percent = normalize ? values[i] / sum : values[i];
a1 = a0 + 2 * IM_PI * percent;
if (item->Show) {
if (percent < 0.5) {
DrawPieSlice(DrawList, center, radius, a0, a1, col);
}
else {
DrawPieSlice(DrawList, center, radius, a0, a0 + (a1 - a0) * 0.5f, col);
DrawPieSlice(DrawList, center, radius, a0 + (a1 - a0) * 0.5f, a1, col);
}
if (show_percents) {
static char buffer[8];
sprintf(buffer, "%.0f%%", percent * 100);
ImVec2 size = CalcTextSize(buffer);
float angle = a0 + (a1 - a0) * 0.5f;
ImVec2 pos = PlotToPixels(center.x + 0.5f * radius * cos(angle), center.y + 0.5f * radius * sin(angle));
DrawList.AddText(pos - size * 0.5f + ImVec2(1,1), IM_COL32(0,0,0,255), buffer);
DrawList.AddText(pos - size * 0.5f, IM_COL32(255,255,255,255), buffer);
}
}
a0 = a1;
}
PopPlotClipRect();
}
void PlotLabel(const char* text, float x, float y, bool vertical, const ImVec2& pixel_offset) {
IM_ASSERT_USER_ERROR(gp.CurrentPlot != NULL, "PlotLabel() Needs to be called between BeginPlot() and EndPlot()!");
ImDrawList & DrawList = *ImGui::GetWindowDrawList();
PushPlotClipRect();
ImVec2 pos = PlotToPixels({x,y}) + pixel_offset;
if (vertical)
AddTextVertical(&DrawList, text, pos, gp.Col_Txt);
else
DrawList.AddText(pos, gp.Col_Txt, text);
PopPlotClipRect();
}
template <typename Getter>
inline void PlotDigitalEx(const char* label_id, Getter getter, int count, int offset)
{
IM_ASSERT_USER_ERROR(gp.CurrentPlot != NULL, "Plot() Needs to be called between BeginPlot() and EndPlot()!");
ImPlotItem* item = RegisterItem(label_id);
if (!item->Show)
return;
ImDrawList & DrawList = *ImGui::GetWindowDrawList();
const bool rend_line = gp.Style.Colors[ImPlotCol_Line].w != 0 && gp.Style.LineWeight > 0;
if (gp.Style.Colors[ImPlotCol_Line].w != -1)
item->Color = gp.Style.Colors[ImPlotCol_Line];
// find data extents
if (gp.FitThisFrame) {
for (int i = 0; i < count; ++i) {
ImVec2 p = getter(i);
FitPoint(p);
}
}
ImGui::PushClipRect(gp.BB_Grid.Min, gp.BB_Grid.Max, true);
bool cull = HasFlag(gp.CurrentPlot->Flags, ImPlotFlags_CullData);
const float line_weight = item->Highlight ? gp.Style.LineWeight * 2 : gp.Style.LineWeight;
const int ax = gp.CurrentPlot->CurrentYAxis;
// render digital signals as "pixel bases" rectangles
if (count > 1 && rend_line) {
//
const float mx = (gp.PixelRange[ax].Max.x - gp.PixelRange[ax].Min.x) / gp.CurrentPlot->XAxis.Range.Size();
int pixY_0 = line_weight;
int pixY_1 = gp.Style.DigitalBitHeight;
int pixY_Offset = 20;//20 pixel from bottom due to mouse cursor label
int pixY_chOffset = pixY_1 + 3; //3 pixels between channels
ImVec2 pMin, pMax;
float y0 = (gp.PixelRange[ax].Min.y) + ((-pixY_chOffset * gp.DigitalPlotItemCnt) - pixY_0 - pixY_Offset);
float y1 = (gp.PixelRange[ax].Min.y) + ((-pixY_chOffset * gp.DigitalPlotItemCnt) - pixY_1 - pixY_Offset);
const int segments = count - 1;
int i1 = offset;
for (int s = 0; s < segments; ++s) {
const int i2 = (i1 + 1) % count;
ImVec2 itemData1 = getter(i1);
ImVec2 itemData2 = getter(i2);
i1 = i2;
pMin.x = gp.PixelRange[ax].Min.x + mx * (itemData1.x - gp.CurrentPlot->XAxis.Range.Min);
pMin.y = (gp.PixelRange[ax].Min.y) + ((-pixY_chOffset * gp.DigitalPlotItemCnt) - pixY_Offset);
pMax.x = gp.PixelRange[ax].Min.x + mx * (itemData2.x - gp.CurrentPlot->XAxis.Range.Min);
pMax.y = ((int) itemData1.y == 0) ? y0 : y1;
//plot only one rectangle for same digital state
while (((s+2) < segments) && ((int) itemData1.y == (int) itemData2.y)) {
const int i2 = (i1 + 1) % count;
itemData2 = getter(i2);
pMax.x = gp.PixelRange[ax].Min.x + mx * (itemData2.x - gp.CurrentPlot->XAxis.Range.Min);
i1 = i2;
s++;
}
//do not extend plot outside plot range
if (pMin.x < gp.PixelRange[ax].Min.x) pMin.x = gp.PixelRange[ax].Min.x;
if (pMax.x < gp.PixelRange[ax].Min.x) pMax.x = gp.PixelRange[ax].Min.x;
if (pMin.x > gp.PixelRange[ax].Max.x) pMin.x = gp.PixelRange[ax].Max.x;
if (pMax.x > gp.PixelRange[ax].Max.x) pMax.x = gp.PixelRange[ax].Max.x;
//plot a rectangle that extends up to x2 with y1 height
if ((pMax.x > pMin.x) && (!cull || gp.BB_Grid.Contains(pMin) || gp.BB_Grid.Contains(pMax))) {
ImVec4 colAlpha = item->Color;
colAlpha.w = item->Highlight ? 1.0 : 0.9;
DrawList.AddRectFilled(pMin, pMax, GetColorU32(colAlpha));
}
}
gp.DigitalPlotItemCnt++;
}
ImGui::PopClipRect();
}
void PlotDigital(const char* label_id, const float* xs, const float* ys, int count, int offset, int stride) {
Getter2D getter(xs,ys,stride);
return PlotDigitalEx(label_id, getter, count, offset);
}
void PlotDigital(const char* label_id, ImVec2 (*getter_func)(void* data, int idx), void* data, int count, int offset) {
GetterFuncPtrImVec2 getter(getter_func,data);
return PlotDigitalEx(label_id, getter, count, offset);
}
} // namespace ImGui
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