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implot/implot_items.cpp
epezent d9ae47bf2b finish refactoring implot for v0.5
2020-08-16 15:38:51 -05:00

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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 v0.5 WIP
#include "implot.h"
#include "implot_internal.h"
#ifdef _MSC_VER
#define sprintf sprintf_s
#endif
#define SQRT_1_2 0.70710678118f
#define SQRT_3_2 0.86602540378f
#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; \
} \
}
namespace ImPlot {
//-----------------------------------------------------------------------------
// GETTERS
//-----------------------------------------------------------------------------
template <typename T>
struct GetterYs {
GetterYs(const T* ys, int count, int offset, int stride) {
Ys = ys;
Count = count;
Offset = count ? ImPosMod(offset, count) : 0;
Stride = stride;
}
const T* Ys;
int Count;
int Offset;
int Stride;
inline ImPlotPoint operator()(int idx) {
return ImPlotPoint((T)idx, OffsetAndStride(Ys, idx, Count, Offset, Stride));
}
};
template <typename T>
struct GetterXsYs {
GetterXsYs(const T* xs, const T* ys, int count, int offset, int stride) {
Xs = xs; Ys = ys;
Count = count;
Offset = count ? ImPosMod(offset, count) : 0;
Stride = stride;
}
const T* Xs;
const T* Ys;
int Count;
int Offset;
int Stride;
inline ImPlotPoint operator()(int idx) {
return ImPlotPoint(OffsetAndStride(Xs, idx, Count, Offset, Stride), OffsetAndStride(Ys, idx, Count, Offset, Stride));
}
};
template <typename T>
struct GetterXsYRef {
GetterXsYRef(const T* xs, T y_ref, int count, int offset, int stride) {
Xs = xs;
YRef = y_ref;
Count = count;
Offset = count ? ImPosMod(offset, count) : 0;
Stride = stride;
}
const T* Xs;
T YRef;
int Count;
int Offset;
int Stride;
inline ImPlotPoint operator()(int idx) {
return ImPlotPoint(OffsetAndStride(Xs, idx, Count, Offset, Stride), YRef);
}
};
struct GetterImVec2 {
GetterImVec2(const ImVec2* data, int count, int offset) {
Data = data;
Count = count;
Offset = count ? ImPosMod(offset, count) : 0;
}
inline ImPlotPoint operator()(int idx) { return ImPlotPoint(Data[idx].x, Data[idx].y); }
const ImVec2* Data;
int Count;
int Offset;
};
struct GetterImPlotPoint {
GetterImPlotPoint(const ImPlotPoint* data, int count, int offset) {
Data = data;
Count = count;
Offset = count ? ImPosMod(offset, count) : 0;
}
inline ImPlotPoint operator()(int idx) { return Data[idx]; }
const ImPlotPoint* Data;
int Count;
int Offset;
};
struct GetterFuncPtrImPlotPoint {
GetterFuncPtrImPlotPoint(ImPlotPoint (*g)(void* data, int idx), void* d, int count, int offset) {
getter = g;
Data = d;
Count = count;
Offset = count ? ImPosMod(offset, count) : 0;
}
inline ImPlotPoint operator()(int idx) { return getter(Data, idx); }
ImPlotPoint (*getter)(void* data, int idx);
void* Data;
int Count;
int Offset;
};
template <typename T>
struct GetterBarV {
const T* Ys; T XShift; int Count; int Offset; int Stride;
GetterBarV(const T* ys, T xshift, int count, int offset, int stride) { Ys = ys; XShift = xshift; Count = count; Offset = offset; Stride = stride; }
inline ImPlotPoint operator()(int idx) { return ImPlotPoint((T)idx + XShift, OffsetAndStride(Ys, idx, Count, Offset, Stride)); }
};
template <typename T>
struct GetterBarH {
const T* Xs; T YShift; int Count; int Offset; int Stride;
GetterBarH(const T* xs, T yshift, int count, int offset, int stride) { Xs = xs; YShift = yshift; Count = count; Offset = offset; Stride = stride; }
inline ImPlotPoint operator()(int idx) { return ImPlotPoint(OffsetAndStride(Xs, idx, Count, Offset, Stride), (T)idx + YShift); }
};
struct ImPlotPointError {
ImPlotPointError(double _x, double _y, double _neg, double _pos) {
x = _x; y = _y; neg = _neg; pos = _pos;
}
double x, y, neg, pos;
};
template <typename T>
struct GetterError {
const T* Xs; const T* Ys; const T* Neg; const T* Pos; int Count; int Offset; int Stride;
GetterError(const T* xs, const T* ys, const T* neg, const T* pos, int count, int offset, int stride) {
Xs = xs; Ys = ys; Neg = neg; Pos = pos; Count = count; Offset = offset; Stride = stride;
}
ImPlotPointError operator()(int idx) {
return ImPlotPointError(OffsetAndStride(Xs, idx, Count, Offset, Stride),
OffsetAndStride(Ys, idx, Count, Offset, Stride),
OffsetAndStride(Neg, idx, Count, Offset, Stride),
OffsetAndStride(Pos, idx, Count, Offset, Stride));
}
};
//-----------------------------------------------------------------------------
// TRANSFORMERS
//-----------------------------------------------------------------------------
struct TransformerLinLin {
TransformerLinLin(int y_axis) : YAxis(y_axis) {}
inline ImVec2 operator()(const ImPlotPoint& plt) { return (*this)(plt.x, plt.y); }
inline ImVec2 operator()(double x, double y) {
ImPlotContext& gp = *GImPlot;
return ImVec2( (float)(gp.PixelRange[YAxis].Min.x + gp.Mx * (x - gp.CurrentPlot->XAxis.Range.Min)),
(float)(gp.PixelRange[YAxis].Min.y + gp.My[YAxis] * (y - gp.CurrentPlot->YAxis[YAxis].Range.Min)) );
}
int YAxis;
};
struct TransformerLogLin {
TransformerLogLin(int y_axis) : YAxis(y_axis) {}
inline ImVec2 operator()(const ImPlotPoint& plt) { return (*this)(plt.x, plt.y); }
inline ImVec2 operator()(double x, double y) {
ImPlotContext& gp = *GImPlot;
double t = ImLog10(x / gp.CurrentPlot->XAxis.Range.Min) / gp.LogDenX;
x = ImLerp(gp.CurrentPlot->XAxis.Range.Min, gp.CurrentPlot->XAxis.Range.Max, (float)t);
return ImVec2( (float)(gp.PixelRange[YAxis].Min.x + gp.Mx * (x - gp.CurrentPlot->XAxis.Range.Min)),
(float)(gp.PixelRange[YAxis].Min.y + gp.My[YAxis] * (y - gp.CurrentPlot->YAxis[YAxis].Range.Min)) );
}
int YAxis;
};
struct TransformerLinLog {
TransformerLinLog(int y_axis) : YAxis(y_axis) {}
inline ImVec2 operator()(const ImPlotPoint& plt) { return (*this)(plt.x, plt.y); }
inline ImVec2 operator()(double x, double y) {
ImPlotContext& gp = *GImPlot;
double t = ImLog10(y / gp.CurrentPlot->YAxis[YAxis].Range.Min) / gp.LogDenY[YAxis];
y = ImLerp(gp.CurrentPlot->YAxis[YAxis].Range.Min, gp.CurrentPlot->YAxis[YAxis].Range.Max, (float)t);
return ImVec2( (float)(gp.PixelRange[YAxis].Min.x + gp.Mx * (x - gp.CurrentPlot->XAxis.Range.Min)),
(float)(gp.PixelRange[YAxis].Min.y + gp.My[YAxis] * (y - gp.CurrentPlot->YAxis[YAxis].Range.Min)) );
}
int YAxis;
};
struct TransformerLogLog {
TransformerLogLog(int y_axis) : YAxis(y_axis) {}
inline ImVec2 operator()(const ImPlotPoint& plt) { return (*this)(plt.x, plt.y); }
inline ImVec2 operator()(double x, double y) {
ImPlotContext& gp = *GImPlot;
double t = ImLog10(x / gp.CurrentPlot->XAxis.Range.Min) / gp.LogDenX;
x = ImLerp(gp.CurrentPlot->XAxis.Range.Min, gp.CurrentPlot->XAxis.Range.Max, (float)t);
t = ImLog10(y / gp.CurrentPlot->YAxis[YAxis].Range.Min) / gp.LogDenY[YAxis];
y = ImLerp(gp.CurrentPlot->YAxis[YAxis].Range.Min, gp.CurrentPlot->YAxis[YAxis].Range.Max, (float)t);
return ImVec2( (float)(gp.PixelRange[YAxis].Min.x + gp.Mx * (x - gp.CurrentPlot->XAxis.Range.Min)),
(float)(gp.PixelRange[YAxis].Min.y + gp.My[YAxis] * (y - gp.CurrentPlot->YAxis[YAxis].Range.Min)) );
}
int YAxis;
};
//-----------------------------------------------------------------------------
// RENDERERS
//-----------------------------------------------------------------------------
/// Renders primitive shapes in bulk as efficiently as possible.
template <typename Renderer>
inline void RenderPrimitives(Renderer renderer, ImDrawList& DrawList) {
unsigned int prims = renderer.Prims;
unsigned int prims_culled = 0;
unsigned int idx = 0;
static const unsigned int max_idx = (unsigned int)(ImPow(2.0f, (float)(sizeof(ImDrawIdx) * 8)) - 1);
const ImVec2 uv = DrawList._Data->TexUvWhitePixel;
while (prims) {
// find how many can be reserved up to end of current draw command's limit
unsigned int cnt = (unsigned int)ImMin(prims, (max_idx - DrawList._VtxCurrentIdx) / Renderer::VtxConsumed);
// make sure at least this many elements can be rendered to avoid situations where at the end of buffer this slow path is not taken all the time
if (cnt >= ImMin(64u, prims)) {
if (prims_culled >= cnt)
prims_culled -= cnt; // reuse previous reservation
else {
DrawList.PrimReserve((cnt - prims_culled) * Renderer::IdxConsumed, (cnt - prims_culled) * Renderer::VtxConsumed); // add more elements to previous reservation
prims_culled = 0;
}
}
else
{
if (prims_culled > 0) {
DrawList.PrimUnreserve(prims_culled * Renderer::IdxConsumed, prims_culled * Renderer::VtxConsumed);
prims_culled = 0;
}
cnt = (unsigned int)ImMin(prims, (max_idx - 0/*DrawList._VtxCurrentIdx*/) / Renderer::VtxConsumed);
DrawList.PrimReserve(cnt * Renderer::IdxConsumed, cnt * Renderer::VtxConsumed); // reserve new draw command
}
prims -= cnt;
for (unsigned int ie = idx + cnt; idx != ie; ++idx) {
if (!renderer(DrawList, uv, idx))
prims_culled++;
}
}
if (prims_culled > 0)
DrawList.PrimUnreserve(prims_culled * Renderer::IdxConsumed, prims_culled * Renderer::VtxConsumed);
}
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] = {ImVec2(1.0f, 0.0f),
ImVec2(0.809017f, 0.58778524f),
ImVec2(0.30901697f, 0.95105654f),
ImVec2(-0.30901703f, 0.9510565f),
ImVec2(-0.80901706f, 0.5877852f),
ImVec2(-1.0f, 0.0f),
ImVec2(-0.80901694f, -0.58778536f),
ImVec2(-0.3090171f, -0.9510565f),
ImVec2(0.30901712f, -0.9510565f),
ImVec2(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] = {ImVec2(1, 0), ImVec2(0, -1), ImVec2(-1, 0), ImVec2(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] = {ImVec2(SQRT_1_2,SQRT_1_2),ImVec2(SQRT_1_2,-SQRT_1_2),ImVec2(-SQRT_1_2,-SQRT_1_2),ImVec2(-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] = {ImVec2(SQRT_3_2,0.5f),ImVec2(0,-1),ImVec2(-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] = {ImVec2(SQRT_3_2,-0.5f),ImVec2(0,1),ImVec2(-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] = {ImVec2(-1,0), ImVec2(0.5, SQRT_3_2), ImVec2(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] = {ImVec2(1,0), ImVec2(-0.5, SQRT_3_2), ImVec2(-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] = {ImVec2(SQRT_3_2, 0.5f), ImVec2(0, -1), ImVec2(-SQRT_3_2, 0.5f), ImVec2(SQRT_3_2, -0.5f), ImVec2(0, 1), ImVec2(-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] = {ImVec2(1, 0), ImVec2(0, -1), ImVec2(-1, 0), ImVec2(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] = {ImVec2(SQRT_1_2,SQRT_1_2),ImVec2(SQRT_1_2,-SQRT_1_2),ImVec2(-SQRT_1_2,-SQRT_1_2),ImVec2(-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(Getter getter, Transformer transformer, ImDrawList& DrawList, bool rend_mk_line, ImU32 col_mk_line, bool rend_mk_fill, ImU32 col_mk_fill) {
ImPlotContext& gp = *GImPlot;
for (int i = 0; i < getter.Count; ++i) {
ImVec2 c = transformer(getter(i));
if (gp.BB_Plot.Contains(c)) {
// TODO: Optimize the loop and if statements, this is atrocious
if (ImHasFlag(gp.Style.Marker, ImPlotMarker_Circle))
MarkerCircle(DrawList, c, gp.Style.MarkerSize, rend_mk_line, col_mk_line, rend_mk_fill, col_mk_fill, gp.Style.MarkerWeight);
if (ImHasFlag(gp.Style.Marker, ImPlotMarker_Square))
MarkerSquare(DrawList, c, gp.Style.MarkerSize, rend_mk_line, col_mk_line, rend_mk_fill, col_mk_fill, gp.Style.MarkerWeight);
if (ImHasFlag(gp.Style.Marker, ImPlotMarker_Diamond))
MarkerDiamond(DrawList, c, gp.Style.MarkerSize, rend_mk_line, col_mk_line, rend_mk_fill, col_mk_fill, gp.Style.MarkerWeight);
if (ImHasFlag(gp.Style.Marker, ImPlotMarker_Up))
MarkerUp(DrawList, c, gp.Style.MarkerSize, rend_mk_line, col_mk_line, rend_mk_fill, col_mk_fill, gp.Style.MarkerWeight);
if (ImHasFlag(gp.Style.Marker, ImPlotMarker_Down))
MarkerDown(DrawList, c, gp.Style.MarkerSize, rend_mk_line, col_mk_line, rend_mk_fill, col_mk_fill, gp.Style.MarkerWeight);
if (ImHasFlag(gp.Style.Marker, ImPlotMarker_Left))
MarkerLeft(DrawList, c, gp.Style.MarkerSize, rend_mk_line, col_mk_line, rend_mk_fill, col_mk_fill, gp.Style.MarkerWeight);
if (ImHasFlag(gp.Style.Marker, ImPlotMarker_Right))
MarkerRight(DrawList, c, gp.Style.MarkerSize, rend_mk_line, col_mk_line, rend_mk_fill, col_mk_fill, gp.Style.MarkerWeight);
if (ImHasFlag(gp.Style.Marker, ImPlotMarker_Cross))
MarkerCross(DrawList, c, gp.Style.MarkerSize, rend_mk_line, col_mk_line, rend_mk_fill, col_mk_fill, gp.Style.MarkerWeight);
if (ImHasFlag(gp.Style.Marker, ImPlotMarker_Plus))
MarkerPlus(DrawList, c, gp.Style.MarkerSize, rend_mk_line, col_mk_line, rend_mk_fill, col_mk_fill, gp.Style.MarkerWeight);
if (ImHasFlag(gp.Style.Marker, ImPlotMarker_Asterisk))
MarkerAsterisk(DrawList, c, gp.Style.MarkerSize, rend_mk_line, col_mk_line, rend_mk_fill, col_mk_fill, gp.Style.MarkerWeight);
}
}
}
template <typename Getter, typename Transformer>
struct LineRenderer {
inline LineRenderer(Getter _getter, Transformer _transformer, ImU32 col, float weight) :
getter(_getter),
transformer(_transformer)
{
Prims = getter.Count - 1;
Col = col;
Weight = weight;
p1 = transformer(getter(0));
}
inline bool operator()(ImDrawList& DrawList, ImVec2 uv, int prim) {
ImPlotContext& gp = *GImPlot;
ImVec2 p2 = transformer(getter(prim + 1));
if (!gp.BB_Plot.Overlaps(ImRect(ImMin(p1, p2), ImMax(p1, p2)))) {
p1 = p2;
return false;
}
float dx = p2.x - p1.x;
float dy = p2.y - p1.y;
IM_NORMALIZE2F_OVER_ZERO(dx, dy);
dx *= (Weight * 0.5f);
dy *= (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;
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;
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;
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;
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;
p1 = p2;
return true;
}
Getter getter;
Transformer transformer;
int Prims;
ImU32 Col;
float Weight;
ImVec2 p1;
static const int IdxConsumed = 6;
static const int VtxConsumed = 4;
};
template <typename Getter, typename Transformer>
inline void RenderLineStrip(Getter getter, Transformer transformer, ImDrawList& DrawList, float line_weight, ImU32 col) {
ImPlotContext& gp = *GImPlot;
if (ImHasFlag(gp.CurrentPlot->Flags, ImPlotFlags_AntiAliased)) {
ImVec2 p1 = transformer(getter(0));
for (int i = 0; i < getter.Count; ++i) {
ImVec2 p2 = transformer(getter(i));
if (gp.BB_Plot.Overlaps(ImRect(ImMin(p1, p2), ImMax(p1, p2))))
DrawList.AddLine(p1, p2, col, line_weight);
p1 = p2;
}
}
else {
RenderPrimitives(LineRenderer<Getter,Transformer>(getter, transformer, col, line_weight), DrawList);
}
}
template <typename Getter1, typename Getter2, typename Transformer>
struct ShadedRenderer {
ShadedRenderer(Getter1 _getter1, Getter2 _getter2, Transformer _transformer, ImU32 col) :
getter1(_getter1),
getter2(_getter2),
transformer(_transformer),
Col(col)
{
Prims = ImMin(getter1.Count, getter2.Count) - 1;
p11 = transformer(getter1(0));
p12 = transformer(getter2(0));
}
inline bool operator()(ImDrawList& DrawList, ImVec2 uv, int prim) {
ImVec2 p21 = transformer(getter1(prim+1));
ImVec2 p22 = transformer(getter2(prim+1));
const int intersect = (p11.y > p12.y && p22.y > p21.y) || (p12.y > p11.y && p21.y > p22.y);
ImVec2 intersection = Intersection(p11,p21,p12,p22);
DrawList._VtxWritePtr[0].pos = p11;
DrawList._VtxWritePtr[0].uv = uv;
DrawList._VtxWritePtr[0].col = Col;
DrawList._VtxWritePtr[1].pos = p21;
DrawList._VtxWritePtr[1].uv = uv;
DrawList._VtxWritePtr[1].col = Col;
DrawList._VtxWritePtr[2].pos = intersection;
DrawList._VtxWritePtr[2].uv = uv;
DrawList._VtxWritePtr[2].col = Col;
DrawList._VtxWritePtr[3].pos = p12;
DrawList._VtxWritePtr[3].uv = uv;
DrawList._VtxWritePtr[3].col = Col;
DrawList._VtxWritePtr[4].pos = p22;
DrawList._VtxWritePtr[4].uv = uv;
DrawList._VtxWritePtr[4].col = Col;
DrawList._VtxWritePtr += 5;
DrawList._IdxWritePtr[0] = (ImDrawIdx)(DrawList._VtxCurrentIdx);
DrawList._IdxWritePtr[1] = (ImDrawIdx)(DrawList._VtxCurrentIdx + 1 + intersect);
DrawList._IdxWritePtr[2] = (ImDrawIdx)(DrawList._VtxCurrentIdx + 3);
DrawList._IdxWritePtr[3] = (ImDrawIdx)(DrawList._VtxCurrentIdx + 1);
DrawList._IdxWritePtr[4] = (ImDrawIdx)(DrawList._VtxCurrentIdx + 3 - intersect);
DrawList._IdxWritePtr[5] = (ImDrawIdx)(DrawList._VtxCurrentIdx + 4);
DrawList._IdxWritePtr += 6;
DrawList._VtxCurrentIdx += 5;
p11 = p21;
p12 = p22;
return true;
}
Getter1 getter1;
Getter2 getter2;
Transformer transformer;
int Prims;
ImU32 Col;
ImVec2 p11, p12;
static const int IdxConsumed = 6;
static const int VtxConsumed = 5;
};
//-----------------------------------------------------------------------------
// RENDERING UTILS
//-----------------------------------------------------------------------------
// Returns true if a style color is set to be automaticaly determined
inline bool ColorIsAuto(ImPlotCol idx) {
ImPlotContext& gp = *GImPlot;
return gp.Style.Colors[idx].w == -1;
}
// Recolors an item from an the current ImPlotCol if it is not automatic (i.e. alpha != -1)
inline void TryRecolorItem(ImPlotItem* item, ImPlotCol idx) {
ImPlotContext& gp = *GImPlot;
if (gp.Style.Colors[idx].w != -1)
item->Color = gp.Style.Colors[idx];
}
// Returns true if lines will render (e.g. basic lines, bar outlines)
inline bool WillLineRender() {
ImPlotContext& gp = *GImPlot;
return gp.Style.Colors[ImPlotCol_Line].w != 0 && gp.Style.LineWeight > 0;
}
// Returns true if fills will render (e.g. shaded plots, bar fills)
inline bool WillFillRender() {
ImPlotContext& gp = *GImPlot;
return gp.Style.Colors[ImPlotCol_Fill].w != 0 && gp.Style.FillAlpha > 0;
}
// Returns true if marker outlines will render
inline bool WillMarkerOutlineRender() {
ImPlotContext& gp = *GImPlot;
return gp.Style.Colors[ImPlotCol_MarkerOutline].w != 0 && gp.Style.MarkerWeight > 0;
}
// Returns true if mark fill will render
inline bool WillMarkerFillRender() {
ImPlotContext& gp = *GImPlot;
return gp.Style.Colors[ImPlotCol_MarkerFill].w != 0 && gp.Style.FillAlpha > 0;
}
// Gets the line color for an item
inline ImVec4 GetLineColor(ImPlotItem* item) {
ImPlotContext& gp = *GImPlot;
return ColorIsAuto(ImPlotCol_Line) ? item->Color : gp.Style.Colors[ImPlotCol_Line];
}
// Gets the fill color for an item
inline ImVec4 GetItemFillColor(ImPlotItem* item) {
ImPlotContext& gp = *GImPlot;
ImVec4 col = ColorIsAuto(ImPlotCol_Fill) ? item->Color : gp.Style.Colors[ImPlotCol_Fill];
col.w *= gp.Style.FillAlpha;
return col;
}
// Gets the marker outline color for an item
inline ImVec4 GetMarkerOutlineColor(ImPlotItem* item) {
ImPlotContext& gp = *GImPlot;
return ColorIsAuto(ImPlotCol_MarkerOutline) ? GetLineColor(item) : gp.Style.Colors[ImPlotCol_MarkerOutline];
}
// Gets the marker fill color for an item
inline ImVec4 GetMarkerFillColor(ImPlotItem* item) {
ImPlotContext& gp = *GImPlot;
ImVec4 col = ColorIsAuto(ImPlotCol_MarkerFill) ? GetLineColor(item) :gp.Style.Colors[ImPlotCol_MarkerFill];
col.w *= gp.Style.FillAlpha;
return col;
}
// Gets the error bar color
inline ImVec4 GetErrorBarColor() {
ImPlotContext& gp = *GImPlot;
return ColorIsAuto(ImPlotCol_ErrorBar) ? ImGui::GetStyleColorVec4(ImGuiCol_Text) : gp.Style.Colors[ImPlotCol_ErrorBar];
}
//-----------------------------------------------------------------------------
// PLOT LINES / MARKERS
//-----------------------------------------------------------------------------
template <typename Getter>
inline void PlotEx(const char* label_id, Getter getter)
{
ImPlotContext& gp = *GImPlot;
IM_ASSERT_USER_ERROR(gp.CurrentPlot != NULL, "PlotEx() needs to be called between BeginPlot() and EndPlot()!");
ImPlotItem* item = RegisterItem(label_id);
if (!item->Show)
return;
TryRecolorItem(item, ImPlotCol_Line);
// find data extents
if (gp.FitThisFrame) {
for (int i = 0; i < getter.Count; ++i) {
ImPlotPoint p = getter(i);
FitPoint(p);
}
}
ImDrawList& DrawList = *ImGui::GetWindowDrawList();
ImPlotState* plot = gp.CurrentPlot;
const int y_axis = plot->CurrentYAxis;
PushPlotClipRect();
// render line
if (getter.Count > 1 && WillLineRender()) {
ImU32 col_line = ImGui::GetColorU32(GetLineColor(item));
const float line_weight = item->Highlight ? gp.Style.LineWeight * 2 : gp.Style.LineWeight;
if (ImHasFlag(plot->XAxis.Flags, ImPlotAxisFlags_LogScale) && ImHasFlag(plot->YAxis[y_axis].Flags, ImPlotAxisFlags_LogScale))
RenderLineStrip(getter, TransformerLogLog(y_axis), DrawList, line_weight, col_line);
else if (ImHasFlag(plot->XAxis.Flags, ImPlotAxisFlags_LogScale))
RenderLineStrip(getter, TransformerLogLin(y_axis), DrawList, line_weight, col_line);
else if (ImHasFlag(plot->YAxis[y_axis].Flags, ImPlotAxisFlags_LogScale))
RenderLineStrip(getter, TransformerLinLog(y_axis), DrawList, line_weight, col_line);
else
RenderLineStrip(getter, TransformerLinLin(y_axis), DrawList, line_weight, col_line);
}
// render markers
if (gp.Style.Marker != ImPlotMarker_None) {
const bool rend_mk_line = WillMarkerOutlineRender();
const bool rend_mk_fill = WillMarkerFillRender();
const ImU32 col_mk_line = ImGui::GetColorU32(GetMarkerOutlineColor(item));
const ImU32 col_mk_fill = ImGui::GetColorU32(GetMarkerFillColor(item));
if (ImHasFlag(plot->XAxis.Flags, ImPlotAxisFlags_LogScale) && ImHasFlag(plot->YAxis[y_axis].Flags, ImPlotAxisFlags_LogScale))
RenderMarkers(getter, TransformerLogLog(y_axis), DrawList, rend_mk_line, col_mk_line, rend_mk_fill, col_mk_fill);
else if (ImHasFlag(plot->XAxis.Flags, ImPlotAxisFlags_LogScale))
RenderMarkers(getter, TransformerLogLin(y_axis), DrawList, rend_mk_line, col_mk_line, rend_mk_fill, col_mk_fill);
else if (ImHasFlag(plot->YAxis[y_axis].Flags, ImPlotAxisFlags_LogScale))
RenderMarkers(getter, TransformerLinLog(y_axis), DrawList, rend_mk_line, col_mk_line, rend_mk_fill, col_mk_fill);
else
RenderMarkers(getter, TransformerLinLin(y_axis), DrawList, rend_mk_line, col_mk_line, rend_mk_fill, col_mk_fill);
}
PopPlotClipRect();
}
//-----------------------------------------------------------------------------
// float
void PlotLine(const char* label_id, const float* values, int count, int offset, int stride) {
GetterYs<float> getter(values,count,offset,stride);
PlotEx(label_id, getter);
}
void PlotLine(const char* label_id, const float* xs, const float* ys, int count, int offset, int stride) {
GetterXsYs<float> getter(xs,ys,count,offset,stride);
return PlotEx(label_id, getter);
}
void PlotLine(const char* label_id, const ImVec2* data, int count, int offset) {
GetterImVec2 getter(data, count, offset);
return PlotEx(label_id, getter);
}
//-----------------------------------------------------------------------------
// double
void PlotLine(const char* label_id, const double* values, int count, int offset, int stride) {
GetterYs<double> getter(values,count,offset,stride);
PlotEx(label_id, getter);
}
void PlotLine(const char* label_id, const double* xs, const double* ys, int count, int offset, int stride) {
GetterXsYs<double> getter(xs,ys,count,offset,stride);
return PlotEx(label_id, getter);
}
void PlotLine(const char* label_id, const ImPlotPoint* data, int count, int offset) {
GetterImPlotPoint getter(data, count, offset);
return PlotEx(label_id, getter);
}
//-----------------------------------------------------------------------------
// custom
void PlotLine(const char* label_id, ImPlotPoint (*getter_func)(void* data, int idx), void* data, int count, int offset) {
GetterFuncPtrImPlotPoint getter(getter_func,data, count, offset);
return PlotEx(label_id, getter);
}
//-----------------------------------------------------------------------------
// PLOT SCATTER
//-----------------------------------------------------------------------------
inline int PushScatterStyle() {
int vars = 1;
PushStyleVar(ImPlotStyleVar_LineWeight, 0);
if (GetStyle().Marker == ImPlotMarker_None) {
PushStyleVar(ImPlotStyleVar_Marker, ImPlotMarker_Circle);
vars++;
}
return vars;
}
//-----------------------------------------------------------------------------
// float
void PlotScatter(const char* label_id, const float* values, int count, int offset, int stride) {
int vars = PushScatterStyle();
PlotLine(label_id, values, count, offset, stride);
PopStyleVar(vars);
}
void PlotScatter(const char* label_id, const float* xs, const float* ys, int count, int offset, int stride) {
int vars = PushScatterStyle();
PlotLine(label_id, xs, ys, count, offset, stride);
PopStyleVar(vars);
}
void PlotScatter(const char* label_id, const ImVec2* data, int count, int offset) {
int vars = PushScatterStyle();
PlotLine(label_id, data, count, offset);
PopStyleVar(vars);
}
//-----------------------------------------------------------------------------
// double
void PlotScatter(const char* label_id, const double* values, int count, int offset, int stride) {
int vars = PushScatterStyle();
PlotLine(label_id, values, count, offset, stride);
PopStyleVar(vars);
}
void PlotScatter(const char* label_id, const double* xs, const double* ys, int count, int offset, int stride) {
int vars = PushScatterStyle();
PlotLine(label_id, xs, ys, count, offset, stride);
PopStyleVar(vars);
}
void PlotScatter(const char* label_id, const ImPlotPoint* data, int count, int offset) {
int vars = PushScatterStyle();
PlotLine(label_id, data, count, offset);
PopStyleVar(vars);
}
//-----------------------------------------------------------------------------
// custom
void PlotScatter(const char* label_id, ImPlotPoint (*getter)(void* data, int idx), void* data, int count, int offset) {
int vars = PushScatterStyle();
PlotLine(label_id, getter, data, count, offset);
PopStyleVar(vars);
}
//-----------------------------------------------------------------------------
// PLOT SHADED
//-----------------------------------------------------------------------------
template <typename Getter1, typename Getter2>
inline void PlotShadedEx(const char* label_id, Getter1 getter1, Getter2 getter2) {
ImPlotContext& gp = *GImPlot;
IM_ASSERT_USER_ERROR(gp.CurrentPlot != NULL, "PlotShaded() needs to be called between BeginPlot() and EndPlot()!");
ImPlotItem* item = RegisterItem(label_id);
if (!item->Show)
return;
TryRecolorItem(item, ImPlotCol_Fill);
if (!WillFillRender())
return;
// find data extents
if (gp.FitThisFrame) {
for (int i = 0; i < ImMin(getter1.Count, getter2.Count); ++i) {
ImPlotPoint p1 = getter1(i);
ImPlotPoint p2 = getter2(i);
FitPoint(p1);
FitPoint(p2);
}
}
ImDrawList & DrawList = *ImGui::GetWindowDrawList();
ImPlotState* plot = gp.CurrentPlot;
const int y_axis = plot->CurrentYAxis;
ImU32 col = ImGui::GetColorU32(GetItemFillColor(item));
PushPlotClipRect();
if (ImHasFlag(plot->XAxis.Flags, ImPlotAxisFlags_LogScale) && ImHasFlag(plot->YAxis[y_axis].Flags, ImPlotAxisFlags_LogScale))
RenderPrimitives(ShadedRenderer<Getter1,Getter2,TransformerLogLog>(getter1,getter2,TransformerLogLog(y_axis), col), DrawList);
else if (ImHasFlag(plot->XAxis.Flags, ImPlotAxisFlags_LogScale))
RenderPrimitives(ShadedRenderer<Getter1,Getter2,TransformerLogLin>(getter1,getter2,TransformerLogLin(y_axis), col), DrawList);
else if (ImHasFlag(plot->YAxis[y_axis].Flags, ImPlotAxisFlags_LogScale))
RenderPrimitives(ShadedRenderer<Getter1,Getter2,TransformerLinLog>(getter1,getter2,TransformerLinLog(y_axis), col), DrawList);
else
RenderPrimitives(ShadedRenderer<Getter1,Getter2,TransformerLinLin>(getter1,getter2,TransformerLinLin(y_axis), col), DrawList);
PopPlotClipRect();
}
//-----------------------------------------------------------------------------
// float
void PlotShaded(const char* label_id, const float* xs, const float* ys1, const float* ys2, int count, int offset, int stride) {
GetterXsYs<float> getter1(xs, ys1, count, offset, stride);
GetterXsYs<float> getter2(xs, ys2, count, offset, stride);
PlotShadedEx(label_id, getter1, getter2);
}
void PlotShaded(const char* label_id, const float* xs, const float* ys, int count, float y_ref, int offset, int stride) {
GetterXsYs<float> getter1(xs, ys, count, offset, stride);
GetterXsYRef<float> getter2(xs, y_ref, count, offset, stride);
PlotShadedEx(label_id, getter1, getter2);
}
//-----------------------------------------------------------------------------
// double
void PlotShaded(const char* label_id, const double* xs, const double* ys1, const double* ys2, int count, int offset, int stride) {
GetterXsYs<double> getter1(xs, ys1, count, offset, stride);
GetterXsYs<double> getter2(xs, ys2, count, offset, stride);
PlotShadedEx(label_id, getter1, getter2);
}
void PlotShaded(const char* label_id, const double* xs, const double* ys, int count, double y_ref, int offset, int stride) {
GetterXsYs<double> getter1(xs, ys, count, offset, stride);
GetterXsYRef<double> getter2(xs, y_ref, count, offset, stride);
PlotShadedEx(label_id, getter1, getter2);
}
//-----------------------------------------------------------------------------
// PLOT BAR V
//-----------------------------------------------------------------------------
template <typename Getter, typename TWidth>
void PlotBarsEx(const char* label_id, Getter getter, TWidth width) {
ImPlotContext& gp = *GImPlot;
IM_ASSERT_USER_ERROR(gp.CurrentPlot != NULL, "PlotBars() needs to be called between BeginPlot() and EndPlot()!");
ImPlotItem* item = RegisterItem(label_id);
if (!item->Show)
return;
TryRecolorItem(item, ImPlotCol_Fill);
const TWidth half_width = width / 2;
// find data extents
if (gp.FitThisFrame) {
for (int i = 0; i < getter.Count; ++i) {
ImPlotPoint p = getter(i);
FitPoint(ImPlotPoint(p.x - half_width, p.y));
FitPoint(ImPlotPoint(p.x + half_width, 0));
}
}
ImU32 col_line = ImGui::GetColorU32(GetLineColor(item));
ImU32 col_fill = ImGui::GetColorU32(GetItemFillColor(item));
const bool rend_fill = WillFillRender();
bool rend_line = WillLineRender();
if (rend_fill && col_line == col_fill)
rend_line = false;
ImDrawList & DrawList = *ImGui::GetWindowDrawList();
PushPlotClipRect();
for (int i = 0; i < getter.Count; ++i) {
ImPlotPoint p = getter(i);
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();
}
//-----------------------------------------------------------------------------
// float
void PlotBars(const char* label_id, const float* values, int count, float width, float shift, int offset, int stride) {
GetterBarV<float> getter(values,shift,count,offset,stride);
PlotBarsEx(label_id, getter, width);
}
void PlotBars(const char* label_id, const float* xs, const float* ys, int count, float width, int offset, int stride) {
GetterXsYs<float> getter(xs,ys,count,offset,stride);
PlotBarsEx(label_id, getter, width);
}
//-----------------------------------------------------------------------------
// double
void PlotBars(const char* label_id, const double* values, int count, double width, double shift, int offset, int stride) {
GetterBarV<double> getter(values,shift,count,offset,stride);
PlotBarsEx(label_id, getter, width);
}
void PlotBars(const char* label_id, const double* xs, const double* ys, int count, double width, int offset, int stride) {
GetterXsYs<double> getter(xs,ys,count,offset,stride);
PlotBarsEx(label_id, getter, width);
}
//-----------------------------------------------------------------------------
// custom
void PlotBars(const char* label_id, ImPlotPoint (*getter_func)(void* data, int idx), void* data, int count, double width, int offset) {
GetterFuncPtrImPlotPoint getter(getter_func, data, count, offset);
PlotBarsEx(label_id, getter, width);
}
//-----------------------------------------------------------------------------
// PLOT BAR H
//-----------------------------------------------------------------------------
// TODO: Migrate to RenderPrimitives
template <typename Getter, typename THeight>
void PlotBarsHEx(const char* label_id, Getter getter, THeight height) {
ImPlotContext& gp = *GImPlot;
IM_ASSERT_USER_ERROR(gp.CurrentPlot != NULL, "PlotBarsH() needs to be called between BeginPlot() and EndPlot()!");
ImPlotItem* item = RegisterItem(label_id);
if (!item->Show)
return;
TryRecolorItem(item, ImPlotCol_Fill);
const THeight half_height = height / 2;
// find data extents
if (gp.FitThisFrame) {
for (int i = 0; i < getter.Count; ++i) {
ImPlotPoint p = getter(i);
FitPoint(ImPlotPoint(0, p.y - half_height));
FitPoint(ImPlotPoint(p.x, p.y + half_height));
}
}
ImU32 col_line = ImGui::GetColorU32(GetLineColor(item));
ImU32 col_fill = ImGui::GetColorU32(GetItemFillColor(item));
const bool rend_fill = WillFillRender();
bool rend_line = WillLineRender();
if (rend_fill && col_line == col_fill)
rend_line = false;
PushPlotClipRect();
ImDrawList & DrawList = *ImGui::GetWindowDrawList();
for (int i = 0; i < getter.Count; ++i) {
ImPlotPoint p = getter(i);
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();
}
//-----------------------------------------------------------------------------
// float
void PlotBarsH(const char* label_id, const float* values, int count, float height, float shift, int offset, int stride) {
GetterBarH<float> getter(values,shift,count,offset,stride);
PlotBarsHEx(label_id, getter, height);
}
void PlotBarsH(const char* label_id, const float* xs, const float* ys, int count, float height, int offset, int stride) {
GetterXsYs<float> getter(xs,ys,count,offset,stride);
PlotBarsHEx(label_id, getter, height);
}
//-----------------------------------------------------------------------------
// double
void PlotBarsH(const char* label_id, const double* values, int count, double height, double shift, int offset, int stride) {
GetterBarH<double> getter(values,shift,count,offset,stride);
PlotBarsHEx(label_id, getter, height);
}
void PlotBarsH(const char* label_id, const double* xs, const double* ys, int count, double height, int offset, int stride) {
GetterXsYs<double> getter(xs,ys,count,offset,stride);
PlotBarsHEx(label_id, getter, height);
}
//-----------------------------------------------------------------------------
// custom
void PlotBarsH(const char* label_id, ImPlotPoint (*getter_func)(void* data, int idx), void* data, int count, double height, int offset) {
GetterFuncPtrImPlotPoint getter(getter_func, data, count, offset);
PlotBarsHEx(label_id, getter, height);
}
//-----------------------------------------------------------------------------
// PLOT ERROR BARS
//-----------------------------------------------------------------------------
template <typename Getter>
void PlotErrorBarsEx(const char* label_id, Getter getter) {
ImPlotContext& gp = *GImPlot;
IM_ASSERT_USER_ERROR(gp.CurrentPlot != NULL, "PlotErrorBars() needs to be called between BeginPlot() and EndPlot()!");
ImPlotItem* item = RegisterItem(label_id);
if (!item->Show)
return;
// find data extents
if (gp.FitThisFrame) {
for (int i = 0; i < getter.Count; ++i) {
ImPlotPointError e = getter(i);
FitPoint(ImPlotPoint(e.x , e.y - e.neg));
FitPoint(ImPlotPoint(e.x , e.y + e.pos ));
}
}
const ImU32 col = ImGui::GetColorU32(GetErrorBarColor());
const bool rend_whisker = gp.Style.ErrorBarSize > 0;
const float half_whisker = gp.Style.ErrorBarSize * 0.5f;
ImDrawList & DrawList = *ImGui::GetWindowDrawList();
PushPlotClipRect();
for (int i = 0; i < getter.Count; ++i) {
ImPlotPointError e = getter(i);
ImVec2 p1 = PlotToPixels(e.x, e.y - e.neg);
ImVec2 p2 = PlotToPixels(e.x, e.y + e.pos);
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();
}
//-----------------------------------------------------------------------------
// float
void PlotErrorBars(const char* label_id, const float* xs, const float* ys, const float* err, int count, int offset, int stride) {
GetterError<float> getter(xs, ys, err, err, count, offset, stride);
PlotErrorBarsEx(label_id, getter);
}
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<float> getter(xs, ys, neg, pos, count, offset, stride);
PlotErrorBarsEx(label_id, getter);
}
//-----------------------------------------------------------------------------
// double
void PlotErrorBars(const char* label_id, const double* xs, const double* ys, const double* err, int count, int offset, int stride) {
GetterError<double> getter(xs, ys, err, err, count, offset, stride);
PlotErrorBarsEx(label_id, getter);
}
void PlotErrorBars(const char* label_id, const double* xs, const double* ys, const double* neg, const double* pos, int count, int offset, int stride) {
GetterError<double> getter(xs, ys, neg, pos, count, offset, stride);
PlotErrorBarsEx(label_id, getter);
}
//-----------------------------------------------------------------------------
// PLOT ERROR BARS H
//-----------------------------------------------------------------------------
template <typename Getter>
void PlotErrorBarsHEx(const char* label_id, Getter getter) {
ImPlotContext& gp = *GImPlot;
IM_ASSERT_USER_ERROR(gp.CurrentPlot != NULL, "PlotErrorBarsH() needs to be called between BeginPlot() and EndPlot()!");
ImPlotItem* item = RegisterItem(label_id);
if (!item->Show)
return;
// find data extents
if (gp.FitThisFrame) {
for (int i = 0; i < getter.Count; ++i) {
ImPlotPointError e = getter(i);
FitPoint(ImPlotPoint(e.x - e.neg, e.y));
FitPoint(ImPlotPoint(e.x + e.pos, e.y));
}
}
const ImU32 col = ImGui::GetColorU32(GetErrorBarColor());
const bool rend_whisker = gp.Style.ErrorBarSize > 0;
const float half_whisker = gp.Style.ErrorBarSize * 0.5f;
ImDrawList& DrawList = *ImGui::GetWindowDrawList();
PushPlotClipRect();
for (int i = 0; i < getter.Count; ++i) {
ImPlotPointError e = getter(i);
ImVec2 p1 = PlotToPixels(e.x - e.neg, e.y);
ImVec2 p2 = PlotToPixels(e.x + e.pos, e.y);
DrawList.AddLine(p1, p2, col, gp.Style.ErrorBarWeight);
if (rend_whisker) {
DrawList.AddLine(p1 - ImVec2(0, half_whisker), p1 + ImVec2(0, half_whisker), col, gp.Style.ErrorBarWeight);
DrawList.AddLine(p2 - ImVec2(0, half_whisker), p2 + ImVec2(0, half_whisker), col, gp.Style.ErrorBarWeight);
}
}
PopPlotClipRect();
}
//-----------------------------------------------------------------------------
// float
void PlotErrorBarsH(const char* label_id, const float* xs, const float* ys, const float* err, int count, int offset, int stride) {
GetterError<float> getter(xs, ys, err, err, count, offset, stride);
PlotErrorBarsHEx(label_id, getter);
}
void PlotErrorBarsH(const char* label_id, const float* xs, const float* ys, const float* neg, const float* pos, int count, int offset, int stride) {
GetterError<float> getter(xs, ys, neg, pos, count, offset, stride);
PlotErrorBarsHEx(label_id, getter);
}
//-----------------------------------------------------------------------------
// double
void PlotErrorBarsH(const char* label_id, const double* xs, const double* ys, const double* err, int count, int offset, int stride) {
GetterError<double> getter(xs, ys, err, err, count, offset, stride);
PlotErrorBarsHEx(label_id, getter);
}
void PlotErrorBarsH(const char* label_id, const double* xs, const double* ys, const double* neg, const double* pos, int count, int offset, int stride) {
GetterError<double> getter(xs, ys, neg, pos, count, offset, stride);
PlotErrorBarsHEx(label_id, getter);
}
//-----------------------------------------------------------------------------
// PLOT PIE CHART
//-----------------------------------------------------------------------------
inline void RenderPieSlice(ImDrawList& DrawList, const ImPlotPoint& center, double radius, double a0, double 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));
double da = (a1 - a0) / (n - 1);
for (int i = 0; i < n; ++i) {
double a = a0 + i * da;
buffer[i + 1] = PlotToPixels(center.x + radius * cos(a), center.y + radius * sin(a));
}
DrawList.AddConvexPolyFilled(buffer, n + 1, col);
}
template <typename T>
void PlotPieChartEx(const char** label_ids, const T* values, int count, T x, T y, T radius, bool normalize, const char* fmt, T angle0) {
ImPlotContext& gp = *GImPlot;
IM_ASSERT_USER_ERROR(gp.CurrentPlot != NULL, "PlotPieChart() needs to be called between BeginPlot() and EndPlot()!");
ImDrawList & DrawList = *ImGui::GetWindowDrawList();
T sum = 0;
for (int i = 0; i < count; ++i)
sum += values[i];
normalize = normalize || sum > 1.0f;
ImPlotPoint center(x,y);
PushPlotClipRect();
T a0 = angle0 * 2 * IM_PI / 360.0f;
T a1 = angle0 * 2 * IM_PI / 360.0f;
for (int i = 0; i < count; ++i) {
ImPlotItem* item = RegisterItem(label_ids[i]);
ImU32 col = ImGui::GetColorU32(GetItemFillColor(item));
T percent = normalize ? values[i] / sum : values[i];
a1 = a0 + 2 * IM_PI * percent;
if (item->Show) {
if (percent < 0.5) {
RenderPieSlice(DrawList, center, radius, a0, a1, col);
}
else {
RenderPieSlice(DrawList, center, radius, a0, a0 + (a1 - a0) * 0.5f, col);
RenderPieSlice(DrawList, center, radius, a0 + (a1 - a0) * 0.5f, a1, col);
}
}
a0 = a1;
}
if (fmt != NULL) {
a0 = angle0 * 2 * IM_PI / 360.0f;
a1 = angle0 * 2 * IM_PI / 360.0f;
char buffer[32];
for (int i = 0; i < count; ++i) {
ImPlotItem* item = GetItem(label_ids[i]);
T percent = normalize ? values[i] / sum : values[i];
a1 = a0 + 2 * IM_PI * percent;
if (item->Show) {
sprintf(buffer, fmt, values[i]);
ImVec2 size = ImGui::CalcTextSize(buffer);
T angle = a0 + (a1 - a0) * 0.5f;
ImVec2 pos = PlotToPixels(center.x + 0.5f * radius * cos(angle), center.y + 0.5f * radius * sin(angle));
ImU32 col = CalcTextColor(GetItemFillColor(item));
DrawList.AddText(pos - size * 0.5f, col, buffer);
}
a0 = a1;
}
}
PopPlotClipRect();
}
//-----------------------------------------------------------------------------
// float
void PlotPieChart(const char** label_ids, const float* values, int count, float x, float y, float radius, bool normalize, const char* fmt, float angle0) {
return PlotPieChartEx(label_ids, values, count, x, y, radius, normalize, fmt, angle0);
}
//-----------------------------------------------------------------------------
// double
void PlotPieChart(const char** label_ids, const double* values, int count, double x, double y, double radius, bool normalize, const char* fmt, double angle0) {
return PlotPieChartEx(label_ids, values, count, x, y, radius, normalize, fmt, angle0);
}
//-----------------------------------------------------------------------------
// PLOT HEATMAP
//-----------------------------------------------------------------------------
template <typename T, typename Transformer>
void RenderHeatmap(Transformer transformer, ImDrawList& DrawList, const T* values, int rows, int cols, T scale_min, T scale_max, const char* fmt, const ImPlotPoint& bounds_min, const ImPlotPoint& bounds_max) {
ImPlotContext& gp = *GImPlot;
const double w = (bounds_max.x - bounds_min.x) / cols;
const double h = (bounds_max.y - bounds_min.y) / rows;
const ImPlotPoint half_size(w*0.5,h*0.5);
int i = 0;
for (int r = 0; r < rows; ++r) {
for (int c = 0; c < cols; ++c) {
ImPlotPoint p;
p.x = bounds_min.x + 0.5*w + c*w;
p.y = bounds_max.y - (0.5*h + r*h);
ImVec2 a = transformer(p.x - half_size.x, p.y - half_size.y);
ImVec2 b = transformer(p.x + half_size.x, p.y + half_size.y);
float t = (float)ImRemap(values[i], scale_min, scale_max, T(0), T(1));
ImVec4 color = LerpColormap(t);
color.w *= gp.Style.FillAlpha;
ImU32 col = ImGui::GetColorU32(color);
DrawList.AddRectFilled(a, b, col);
i++;
}
}
if (fmt != NULL) {
i = 0;
for (int r = 0; r < rows; ++r) {
for (int c = 0; c < cols; ++c) {
ImPlotPoint p;
p.x = bounds_min.x + 0.5*w + c*w;
p.y = bounds_min.y + 1 - (0.5*h + r*h);
ImVec2 px = transformer(p);
char buff[32];
sprintf(buff, fmt, values[i]);
ImVec2 size = ImGui::CalcTextSize(buff);
float t = (float)ImRemap(values[i], scale_min, scale_max, T(0), T(1));
ImVec4 color = LerpColormap(t);
ImU32 col = CalcTextColor(color);
DrawList.AddText(px - size * 0.5f, col, buff);
i++;
}
}
}
}
template <typename T>
void PlotHeatmapEx(const char* label_id, const T* values, int rows, int cols, T scale_min, T scale_max, const char* fmt, const ImPlotPoint& bounds_min, const ImPlotPoint& bounds_max) {
ImPlotContext& gp = *GImPlot;
IM_ASSERT_USER_ERROR(gp.CurrentPlot != NULL, "PlotHeatmap() needs to be called between BeginPlot() and EndPlot()!");
IM_ASSERT_USER_ERROR(scale_min != scale_max, "Scale values must be different!");
ImPlotItem* item = RegisterItem(label_id);
if (!item->Show)
return;
if (gp.FitThisFrame) {
FitPoint(bounds_min);
FitPoint(bounds_max);
}
ImDrawList& DrawList = *ImGui::GetWindowDrawList();
ImGui::PushClipRect(gp.BB_Plot.Min, gp.BB_Plot.Max, true);
ImPlotState* plot = gp.CurrentPlot;
int y_axis = plot->CurrentYAxis;
if (ImHasFlag(plot->XAxis.Flags, ImPlotAxisFlags_LogScale) && ImHasFlag(plot->YAxis[y_axis].Flags, ImPlotAxisFlags_LogScale))
RenderHeatmap(TransformerLogLog(y_axis), DrawList, values, rows, cols, scale_min, scale_max, fmt, bounds_min, bounds_max);
else if (ImHasFlag(plot->XAxis.Flags, ImPlotAxisFlags_LogScale))
RenderHeatmap(TransformerLogLin(y_axis), DrawList, values, rows, cols, scale_min, scale_max, fmt, bounds_min, bounds_max);
else if (ImHasFlag(plot->YAxis[y_axis].Flags, ImPlotAxisFlags_LogScale))
RenderHeatmap(TransformerLinLog(y_axis), DrawList, values, rows, cols, scale_min, scale_max, fmt, bounds_min, bounds_max);
else
RenderHeatmap(TransformerLinLin(y_axis), DrawList, values, rows, cols, scale_min, scale_max, fmt, bounds_min, bounds_max);
ImGui::PopClipRect();
}
//-----------------------------------------------------------------------------
// float
void PlotHeatmap(const char* label_id, const float* values, int rows, int cols, float scale_min, float scale_max, const char* fmt, const ImPlotPoint& bounds_min, const ImPlotPoint& bounds_max) {
return PlotHeatmapEx(label_id, values, rows, cols, scale_min, scale_max, fmt, bounds_min, bounds_max);
}
//-----------------------------------------------------------------------------
// double
void PlotHeatmap(const char* label_id, const double* values, int rows, int cols, double scale_min, double scale_max, const char* fmt, const ImPlotPoint& bounds_min, const ImPlotPoint& bounds_max) {
return PlotHeatmapEx(label_id, values, rows, cols, scale_min, scale_max, fmt, bounds_min, bounds_max);
}
//-----------------------------------------------------------------------------
// PLOT DIGITAL
//-----------------------------------------------------------------------------
template <typename Getter>
inline void PlotDigitalEx(const char* label_id, Getter getter)
{
ImPlotContext& gp = *GImPlot;
IM_ASSERT_USER_ERROR(gp.CurrentPlot != NULL, "PlotDigital() needs to be called between BeginPlot() and EndPlot()!");
ImPlotItem* item = RegisterItem(label_id);
if (!item->Show)
return;
TryRecolorItem(item, ImPlotCol_Line);
// render digital signals as "pixel bases" rectangles
PushPlotClipRect();
if (getter.Count > 1 && WillLineRender()) {
ImDrawList & DrawList = *ImGui::GetWindowDrawList();
const float line_weight = item->Highlight ? gp.Style.LineWeight * 2 : gp.Style.LineWeight;
const int y_axis = gp.CurrentPlot->CurrentYAxis;
int pixYMax = 0;
ImPlotPoint itemData1 = getter(0);
for (int i = 0; i < getter.Count; ++i) {
ImPlotPoint itemData2 = getter(i);
if (NanOrInf(itemData1.y)) {
itemData1 = itemData2;
continue;
}
if (NanOrInf(itemData2.y)) itemData2.y = ConstrainNan(ConstrainInf(itemData2.y));
int pixY_0 = (int)(line_weight);
itemData1.y = ImMax(0.0, itemData1.y);
float pixY_1_float = gp.Style.DigitalBitHeight * (float)itemData1.y;
int pixY_1 = (int)(pixY_1_float); //allow only positive values
int pixY_chPosOffset = (int)(ImMax(gp.Style.DigitalBitHeight, pixY_1_float) + gp.Style.DigitalBitGap);
pixYMax = ImMax(pixYMax, pixY_chPosOffset);
ImVec2 pMin = PlotToPixels(itemData1);
ImVec2 pMax = PlotToPixels(itemData2);
int pixY_Offset = 20; //20 pixel from bottom due to mouse cursor label
pMin.y = (gp.PixelRange[y_axis].Min.y) + ((-gp.DigitalPlotOffset) - pixY_Offset);
pMax.y = (gp.PixelRange[y_axis].Min.y) + ((-gp.DigitalPlotOffset) - pixY_0 - pixY_1 - pixY_Offset);
//plot only one rectangle for same digital state
while (((i+2) < getter.Count) && (itemData1.y == itemData2.y)) {
const int in = (i + 1);
itemData2 = getter(in);
if (NanOrInf(itemData2.y)) break;
pMax.x = PlotToPixels(itemData2).x;
i++;
}
//do not extend plot outside plot range
if (pMin.x < gp.PixelRange[y_axis].Min.x) pMin.x = gp.PixelRange[y_axis].Min.x;
if (pMax.x < gp.PixelRange[y_axis].Min.x) pMax.x = gp.PixelRange[y_axis].Min.x;
if (pMin.x > gp.PixelRange[y_axis].Max.x) pMin.x = gp.PixelRange[y_axis].Max.x;
if (pMax.x > gp.PixelRange[y_axis].Max.x) pMax.x = gp.PixelRange[y_axis].Max.x;
//plot a rectangle that extends up to x2 with y1 height
if ((pMax.x > pMin.x) && (gp.BB_Plot.Contains(pMin) || gp.BB_Plot.Contains(pMax))) {
ImVec4 colAlpha = item->Color;
colAlpha.w = item->Highlight ? 1.0f : 0.9f;
DrawList.AddRectFilled(pMin, pMax, ImGui::GetColorU32(colAlpha));
}
itemData1 = itemData2;
}
gp.DigitalPlotItemCnt++;
gp.DigitalPlotOffset += pixYMax;
}
PopPlotClipRect();
}
//-----------------------------------------------------------------------------
// float
void PlotDigital(const char* label_id, const float* xs, const float* ys, int count, int offset, int stride) {
GetterXsYs<float> getter(xs,ys,count,offset,stride);
return PlotDigitalEx(label_id, getter);
}
//-----------------------------------------------------------------------------
// double
void PlotDigital(const char* label_id, const double* xs, const double* ys, int count, int offset, int stride) {
GetterXsYs<double> getter(xs,ys,count,offset,stride);
return PlotDigitalEx(label_id, getter);
}
//-----------------------------------------------------------------------------
// custom
void PlotDigital(const char* label_id, ImPlotPoint (*getter_func)(void* data, int idx), void* data, int count, int offset) {
GetterFuncPtrImPlotPoint getter(getter_func,data,count,offset);
return PlotDigitalEx(label_id, getter);
}
//-----------------------------------------------------------------------------
// PLOT TEXT
//-----------------------------------------------------------------------------
// float
void PlotText(const char* text, float x, float y, bool vertical, const ImVec2& pixel_offset) {
return PlotText(text, (double)x, (double)y, vertical, pixel_offset);
}
//-----------------------------------------------------------------------------
// double
void PlotText(const char* text, double x, double y, bool vertical, const ImVec2& pixel_offset) {
ImPlotContext& gp = *GImPlot;
IM_ASSERT_USER_ERROR(gp.CurrentPlot != NULL, "PlotText() needs to be called between BeginPlot() and EndPlot()!");
ImDrawList & DrawList = *ImGui::GetWindowDrawList();
PushPlotClipRect();
ImVec2 pos = PlotToPixels(ImPlotPoint(x,y)) + pixel_offset;
ImU32 colTxt = ImGui::GetColorU32(ImGuiCol_Text);
if (vertical)
AddTextVertical(&DrawList, text, pos, colTxt);
else
DrawList.AddText(pos, colTxt, text);
PopPlotClipRect();
}
} // namespace ImPlot
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