gwm17/implot
1
0
Fork 0
mirror of https://github.com/gwm17/implot.git synced 2024-10-09 23:57:26 -04:00
Code Issues Projects Releases Wiki Activity

add Push/PopColormap, custom PlotShaded

Browse Source
This commit is contained in:
epezent 2020-08-21 22:13:11 -05:00
parent 9deca4e422
commit 0afa53059e
5 changed files with 195 additions and 139 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

230
implot.cpp
View File

@ -206,7 +206,7 @@ void SetCurrentContext(ImPlotContext* ctx) {
void Initialize(ImPlotContext* ctx) {
Reset(ctx);
SetColormapEx(ImPlotColormap_Default, 0, ctx);
ctx->Colormap = GetColormap(ImPlotColormap_Default, &ctx->ColormapSize);
}
void Reset(ImPlotContext* ctx) {
@ -1842,98 +1842,58 @@ void PopStyleVar(int count) {
// COLORMAPS
//------------------------------------------------------------------------------
// Returns the size of the current colormap
int GetColormapSize() {
void PushColormap(ImPlotColormap colormap) {
ImPlotContext& gp = *GImPlot;
return gp.ColormapSize;
gp.ColormapModifiers.push_back(ImPlotColormapMod(gp.Colormap, gp.ColormapSize));
gp.Colormap = GetColormap(colormap, &gp.ColormapSize);
}
// Returns a color from the Color map given an index > 0
ImVec4 GetColormapColor(int index) {
void PushColormap(const ImVec4* colormap, int size) {
ImPlotContext& gp = *GImPlot;
IM_ASSERT_USER_ERROR(index >= 0, "The Colormap index must be greater than zero!");
return gp.Colormap[index % gp.ColormapSize];
gp.ColormapModifiers.push_back(ImPlotColormapMod(gp.Colormap, gp.ColormapSize));
gp.Colormap = colormap;
gp.ColormapSize = size;
}
ImVec4 LerpColormap(float t) {
void PopColormap(int count) {
ImPlotContext& gp = *GImPlot;
float tc = ImClamp(t,0.0f,1.0f);
int i1 = (int)((gp.ColormapSize -1 ) * tc);
int i2 = i1 + 1;
if (i2 == gp.ColormapSize)
return gp.Colormap[i1];
float t1 = (float)i1 / (float)(gp.ColormapSize - 1);
float t2 = (float)i2 / (float)(gp.ColormapSize - 1);
float tr = ImRemap(t, t1, t2, 0.0f, 1.0f);
return ImLerp(gp.Colormap[i1], gp.Colormap[i2], tr);
while (count > 0) {
const ImPlotColormapMod& backup = gp.ColormapModifiers.back();
gp.Colormap = backup.Colormap;
gp.ColormapSize = backup.ColormapSize;
gp.ColormapModifiers.pop_back();
count--;
}
}
ImVec4 NextColormapColor() {
void SetColormap(ImPlotColormap colormap, int samples) {
ImPlotContext& gp = *GImPlot;
ImVec4 col = gp.Colormap[gp.CurrentPlot->ColormapIdx % gp.ColormapSize];
gp.CurrentPlot->ColormapIdx++;
return col;
gp.Colormap = GetColormap(colormap, &gp.ColormapSize);
if (samples > 1) {
static ImVector<ImVec4> resampled;
resampled.resize(samples);
ResampleColormap(gp.Colormap, gp.ColormapSize, &resampled[0], samples);
SetColormap(&resampled[0], samples);
}
}
void ShowColormapScale(double scale_min, double scale_max, float height) {
void SetColormap(const ImVec4* colors, int size) {
ImPlotContext& gp = *GImPlot;
static ImVector<ImPlotTick> ticks;
static ImGuiTextBuffer txt_buff;
ImPlotRange range;
range.Min = scale_min;
range.Max = scale_max;
ticks.shrink(0);
txt_buff.Buf.shrink(0);
AddDefaultTicks(range, 10, 0, false, ticks);
LabelTicks(ticks, false, txt_buff);
float max_width = 0;
for (int i = 0; i < ticks.Size; ++i)
max_width = ticks[i].LabelSize.x > max_width ? ticks[i].LabelSize.x : max_width;
ImGuiContext &G = *GImGui;
ImGuiWindow * Window = G.CurrentWindow;
if (Window->SkipItems)
return;
const ImGuiStyle &Style = G.Style;
const float txt_off = 5;
const float bar_w = 20;
ImDrawList &DrawList = *Window->DrawList;
ImVec2 size(bar_w + txt_off + max_width + 2 * gp.Style.PlotPadding.x, height);
ImRect bb_frame = ImRect(Window->DC.CursorPos, Window->DC.CursorPos + size);
ImGui::ItemSize(bb_frame);
if (!ImGui::ItemAdd(bb_frame, 0, &bb_frame))
return;
ImGui::RenderFrame(bb_frame.Min, bb_frame.Max, ImGui::GetColorU32(ImGuiCol_FrameBg));
ImRect bb_grad(bb_frame.Min + gp.Style.PlotPadding, bb_frame.Min + ImVec2(bar_w + gp.Style.PlotPadding.x, height - gp.Style.PlotPadding.y));
int num_cols = GetColormapSize();
float h_step = (height - 2 * gp.Style.PlotPadding.y) / (num_cols - 1);
for (int i = 0; i < num_cols-1; ++i) {
ImRect rect(bb_grad.Min.x, bb_grad.Min.y + h_step * i, bb_grad.Max.x, bb_grad.Min.y + h_step * (i + 1));
ImU32 col1 = ImGui::GetColorU32(GetColormapColor(num_cols - 1 - i));
ImU32 col2 = ImGui::GetColorU32(GetColormapColor(num_cols - 1 - (i+1)));
DrawList.AddRectFilledMultiColor(rect.Min, rect.Max, col1, col1, col2, col2);
}
ImU32 col_border = gp.Style.Colors[ImPlotCol_PlotBorder].w == -1 ? ImGui::GetColorU32(ImGuiCol_Text, 0.5f) : ImGui::GetColorU32(gp.Style.Colors[ImPlotCol_PlotBorder]);
ImGui::PushClipRect(bb_frame.Min, bb_frame.Max, true);
for (int i = 0; i < ticks.Size; ++i) {
float ypos = ImRemap((float)ticks[i].PlotPos, (float)range.Max, (float)range.Min, bb_grad.Min.y, bb_grad.Max.y);
if (ypos < bb_grad.Max.y - 2 && ypos > bb_grad.Min.y + 2)
DrawList.AddLine(ImVec2(bb_grad.Max.x-1, ypos), ImVec2(bb_grad.Max.x - (ticks[i].Major ? 10.0f : 5.0f), ypos), col_border, 1.0f);
DrawList.AddText(ImVec2(bb_grad.Max.x-1, ypos) + ImVec2(txt_off, -ticks[i].LabelSize.y * 0.5f), ImGui::GetColorU32(ImGuiCol_Text), txt_buff.Buf.Data + ticks[i].BufferOffset);
}
ImGui::PopClipRect();
DrawList.AddRect(bb_grad.Min, bb_grad.Max, col_border);
IM_ASSERT_USER_ERROR(size > 1, "The number of colors must be greater than 1!");
static ImVector<ImVec4> user_colormap;
user_colormap.shrink(0);
user_colormap.reserve(size);
for (int i = 0; i < size; ++i)
user_colormap.push_back(colors[i]);
gp.Colormap = &user_colormap[0];
gp.ColormapSize = size;
}
void SetColormapEx(ImPlotColormap colormap, int samples, ImPlotContext* ctx) {
static int csizes[ImPlotColormap_COUNT] = {10,9,9,12,11,11,11,11,11,11};
static ImOffsetCalculator<ImPlotColormap_COUNT> coffs(csizes);
static ImVec4 cdata[] = {
const ImVec4* GetColormap(ImPlotColormap colormap, int* size_out) {
static const int csizes[ImPlotColormap_COUNT] = {10,9,9,12,11,11,11,11,11,11};
static const ImOffsetCalculator<ImPlotColormap_COUNT> coffs(csizes);
static const ImVec4 cdata[] = {
// ImPlotColormap_Default // X11 Named Colors
ImVec4(0.0f, 0.7490196228f, 1.0f, 1.0f), // Blues::DeepSkyBlue,
ImVec4(1.0f, 0.0f, 0.0f, 1.0f), // Reds::Red,
@ -2051,36 +2011,106 @@ void SetColormapEx(ImPlotColormap colormap, int samples, ImPlotContext* ctx) {
ImVec4(1.0000f, 0.3333f, 0.f, 1.0f),
ImVec4(1.0000f, 0.f, 0.f, 1.0f)
};
ctx->Colormap = &cdata[coffs.Offsets[colormap]];
ctx->ColormapSize = csizes[colormap];
if (samples > 1) {
static ImVector<ImVec4> resampled;
resampled.resize(samples);
for (int i = 0; i < samples; ++i) {
float t = i * 1.0f / (samples - 1);
resampled[i] = LerpColormap(t);
*size_out = csizes[colormap];
return &cdata[coffs.Offsets[colormap]];
}
SetColormapEx(&resampled[0], samples, ctx);
void ResampleColormap(const ImVec4* colormap_in, int size_in, ImVec4* colormap_out, int size_out) {
for (int i = 0; i < size_out; ++i) {
float t = i * 1.0f / (size_out - 1);
colormap_out[i] = LerpColormap(colormap_in, size_in, t);
}
}
void SetColormapEx(const ImVec4* colors, int num_colors, ImPlotContext* ctx) {
IM_ASSERT_USER_ERROR(num_colors > 1, "The number of colors must be greater than 1!");
static ImVector<ImVec4> user_colormap;
user_colormap.shrink(0);
user_colormap.reserve(num_colors);
for (int i = 0; i < num_colors; ++i)
user_colormap.push_back(colors[i]);
ctx->Colormap = &user_colormap[0];
ctx->ColormapSize = num_colors;
int GetColormapSize() {
ImPlotContext& gp = *GImPlot;
return gp.ColormapSize;
}
void SetColormap(ImPlotColormap colormap, int samples) {
SetColormapEx(colormap, samples, GImPlot);
ImVec4 GetColormapColor(int index) {
ImPlotContext& gp = *GImPlot;
IM_ASSERT_USER_ERROR(index >= 0, "The Colormap index must be greater than zero!");
return gp.Colormap[index % gp.ColormapSize];
}
void SetColormap(const ImVec4* colors, int num_colors) {
SetColormapEx(colors, num_colors, GImPlot);
ImVec4 LerpColormap(const ImVec4* colormap, int size, float t) {
float tc = ImClamp(t,0.0f,1.0f);
int i1 = (int)((size -1 ) * tc);
int i2 = i1 + 1;
if (i2 == size)
return colormap[i1];
float t1 = (float)i1 / (float)(size - 1);
float t2 = (float)i2 / (float)(size - 1);
float tr = ImRemap(t, t1, t2, 0.0f, 1.0f);
return ImLerp(colormap[i1], colormap[i2], tr);
}
ImVec4 LerpColormap(float t) {
ImPlotContext& gp = *GImPlot;
return LerpColormap(gp.Colormap, gp.ColormapSize, t);
}
ImVec4 NextColormapColor() {
ImPlotContext& gp = *GImPlot;
IM_ASSERT_USER_ERROR(gp.CurrentPlot != NULL, "NextColormapColor() needs to be called between BeginPlot() and EndPlot()!");
ImVec4 col = gp.Colormap[gp.CurrentPlot->ColormapIdx % gp.ColormapSize];
gp.CurrentPlot->ColormapIdx++;
return col;
}
void ShowColormapScale(double scale_min, double scale_max, float height) {
ImPlotContext& gp = *GImPlot;
static ImVector<ImPlotTick> ticks;
static ImGuiTextBuffer txt_buff;
ImPlotRange range;
range.Min = scale_min;
range.Max = scale_max;
ticks.shrink(0);
txt_buff.Buf.shrink(0);
AddDefaultTicks(range, 10, 0, false, ticks);
LabelTicks(ticks, false, txt_buff);
float max_width = 0;
for (int i = 0; i < ticks.Size; ++i)
max_width = ticks[i].LabelSize.x > max_width ? ticks[i].LabelSize.x : max_width;
ImGuiContext &G = *GImGui;
ImGuiWindow * Window = G.CurrentWindow;
if (Window->SkipItems)
return;
const ImGuiStyle &Style = G.Style;
const float txt_off = 5;
const float bar_w = 20;
ImDrawList &DrawList = *Window->DrawList;
ImVec2 size(bar_w + txt_off + max_width + 2 * gp.Style.PlotPadding.x, height);
ImRect bb_frame = ImRect(Window->DC.CursorPos, Window->DC.CursorPos + size);
ImGui::ItemSize(bb_frame);
if (!ImGui::ItemAdd(bb_frame, 0, &bb_frame))
return;
ImGui::RenderFrame(bb_frame.Min, bb_frame.Max, ImGui::GetColorU32(ImGuiCol_FrameBg));
ImRect bb_grad(bb_frame.Min + gp.Style.PlotPadding, bb_frame.Min + ImVec2(bar_w + gp.Style.PlotPadding.x, height - gp.Style.PlotPadding.y));
int num_cols = GetColormapSize();
float h_step = (height - 2 * gp.Style.PlotPadding.y) / (num_cols - 1);
for (int i = 0; i < num_cols-1; ++i) {
ImRect rect(bb_grad.Min.x, bb_grad.Min.y + h_step * i, bb_grad.Max.x, bb_grad.Min.y + h_step * (i + 1));
ImU32 col1 = ImGui::GetColorU32(GetColormapColor(num_cols - 1 - i));
ImU32 col2 = ImGui::GetColorU32(GetColormapColor(num_cols - 1 - (i+1)));
DrawList.AddRectFilledMultiColor(rect.Min, rect.Max, col1, col1, col2, col2);
}
ImU32 col_border = gp.Style.Colors[ImPlotCol_PlotBorder].w == -1 ? ImGui::GetColorU32(ImGuiCol_Text, 0.5f) : ImGui::GetColorU32(gp.Style.Colors[ImPlotCol_PlotBorder]);
ImGui::PushClipRect(bb_frame.Min, bb_frame.Max, true);
for (int i = 0; i < ticks.Size; ++i) {
float ypos = ImRemap((float)ticks[i].PlotPos, (float)range.Max, (float)range.Min, bb_grad.Min.y, bb_grad.Max.y);
if (ypos < bb_grad.Max.y - 2 && ypos > bb_grad.Min.y + 2)
DrawList.AddLine(ImVec2(bb_grad.Max.x-1, ypos), ImVec2(bb_grad.Max.x - (ticks[i].Major ? 10.0f : 5.0f), ypos), col_border, 1.0f);
DrawList.AddText(ImVec2(bb_grad.Max.x-1, ypos) + ImVec2(txt_off, -ticks[i].LabelSize.y * 0.5f), ImGui::GetColorU32(ImGuiCol_Text), txt_buff.Buf.Data + ticks[i].BufferOffset);
}
ImGui::PopClipRect();
DrawList.AddRect(bb_grad.Min, bb_grad.Max, col_border);
}
} // namespace ImPlot

18
implot.h
View File

@ -267,6 +267,7 @@ void PlotShaded(const char* label_id, const float* xs, const float* ys, int coun
void PlotShaded(const char* label_id, const double* xs, const double* ys, int count, double y_ref = 0, int offset = 0, int stride = sizeof(double));
void PlotShaded(const char* label_id, const float* xs, const float* ys1, const float* ys2, int count, int offset = 0, int stride = sizeof(float));
void PlotShaded(const char* label_id, const double* xs, const double* ys1, const double* ys2, int count, int offset = 0, int stride = sizeof(double));
void PlotShaded(const char* label_id, ImPlotPoint (*getter1)(void* data, int idx), void* data1, ImPlotPoint (*getter2)(void* data, int idx), void* data2, int count, int offset = 0);
// Plots a vertical bar graph. #width and #shift are in X units.
void PlotBars(const char* label_id, const float* values, int count, float width = 0.67f, float shift = 0, int offset = 0, int stride = sizeof(float));
@ -340,7 +341,7 @@ bool IsLegendEntryHovered(const char* label_id);
ImPlotInputMap& GetInputMap();
//-----------------------------------------------------------------------------
// Plot Styling and Behaviour
// Plot Styling and Colormaps
//-----------------------------------------------------------------------------
// Provides access to plot style structure for permanant modifications to colors, sizes, etc.
@ -365,17 +366,24 @@ void PushStyleVar(ImPlotStyleVar idx, const ImVec2& val);
// Undo temporary style modification.
void PopStyleVar(int count = 1);
// Switch to one of the built-in colormaps. If samples is greater than 1, the map will be linearly resampled.
// Temporarily switch to one of the built-in colormaps.
void PushColormap(ImPlotColormap colormap);
// Temporarily switch to your custom colormap. The pointer data must persist until the matching call to PopColormap.
void PushColormap(const ImVec4* colormap, int size);
// Undo temporary colormap modification.
void PopColormap(int count = 1);
// Permanently sets a custom colormap. The colors will be copied to internal memory. Prefer PushColormap instead of calling this each frame.
void SetColormap(const ImVec4* colormap, int size);
// Permanently switch to one of the built-in colormaps. If samples is greater than 1, the map will be linearly resampled. Don't call this each frame.
void SetColormap(ImPlotColormap colormap, int samples = 0);
// Sets a custom colormap.
void SetColormap(const ImVec4* colors, int num_colors);
// Returns the size of the current colormap.
int GetColormapSize();
// Returns a color from the Color map given an index >= 0 (modulo will be performed)
ImVec4 GetColormapColor(int index);
// Linearly interpolates a color from the current colormap given t between 0 and 1.
ImVec4 LerpColormap(float t);
// Returns the next unused colormap color and advances the colormap. Can be used to skip colors if desired.
// Returns the next unused colormap color and advances the colormap. Can be used to skip colors if desired. Call between BeginPlot/EndPlot.
ImVec4 NextColormapColor();
//-----------------------------------------------------------------------------

28
implot_demo.cpp
View File

@ -375,7 +375,7 @@ void ShowDemoWindow(bool* p_open) {
ImPlot::EndPlot();
}
ImGui::SameLine();
ImPlot::SetColormap(ImPlotColormap_Cool, 5);
ImPlot::PushColormap(ImPlotColormap_Pastel);
SetNextPlotLimits(0,1,0,1,ImGuiCond_Always);
static const char* labels2[] = {"A","B","C","D","E"};
static t_float data2[] = {1,1,2,3,5};
@ -383,7 +383,7 @@ void ShowDemoWindow(bool* p_open) {
ImPlot::PlotPieChart(labels2, data2, 5, 0.5f, 0.5f, 0.4f, true, "%.0f", 180);
ImPlot::EndPlot();
}
ImPlot::SetColormap(ImPlotColormap_Default);
ImPlot::PopColormap();
}
//-------------------------------------------------------------------------
if (ImGui::CollapsingHeader("Heatmaps")) {
@ -403,7 +403,7 @@ void ShowDemoWindow(bool* p_open) {
static ImPlotColormap map = ImPlotColormap_Viridis;
if (ImGui::Button("Change Colormap",ImVec2(225,0)))
map = (map + 1) % ImPlotColormap_COUNT;
ImPlot::SetColormap(map);
ImPlot::PushColormap(map);
ImGui::SameLine();
ImGui::LabelText("##Colormap Index", "%s", cmap_names[map]);
ImGui::SetNextItemWidth(225);
@ -421,17 +421,17 @@ void ShowDemoWindow(bool* p_open) {
}
ImGui::SameLine();
ImPlot::ShowColormapScale(scale_min, scale_max, 225);
ImPlot::SetColormap(ImPlotColormap_Default);
ImPlot::PopColormap();
ImGui::SameLine();
static ImVec4 gray[2] = {ImVec4(0,0,0,1), ImVec4(1,1,1,1)};
ImPlot::SetColormap(&gray[0], 2);
ImPlot::PushColormap(&gray[0], 2);
ImPlot::SetNextPlotLimits(-1,1,-1,1);
if (ImPlot::BeginPlot("##Heatmap2",NULL,NULL,ImVec2(225,225),ImPlotFlags_ContextMenu,0,0)) {
ImPlot::PlotHeatmap("heat1",values2,100,100,0,1,NULL);
ImPlot::PlotHeatmap("heat2",values2,100,100,0,1,NULL, ImPlotPoint(-1,-1), ImPlotPoint(0,0));
ImPlot::EndPlot();
}
ImPlot::SetColormap(ImPlotColormap_Default);
ImPlot::PopColormap();
}
//-------------------------------------------------------------------------
if (ImGui::CollapsingHeader("Realtime Plots")) {
@ -485,7 +485,7 @@ void ShowDemoWindow(bool* p_open) {
if (ImPlot::BeginPlot("##MarkerStyles", NULL, NULL, ImVec2(-1,0), 0, 0, 0)) {
ImPlot::PushStyleVar(ImPlotStyleVar_MarkerSize, mk_size);
ImPlot::PushStyleVar(ImPlotStyleVar_MarkerWeight, mk_weight);
ImPlot::SetColormap(map);
ImPlot::PushColormap(map);
t_float xs[2] = {1,4};
t_float ys[2] = {10,11};
// filled
@ -558,7 +558,7 @@ void ShowDemoWindow(bool* p_open) {
ImPlot::PlotText("Fancy Markers", 5.0f, 6.0f, true);
ImGui::PopStyleColor();
ImPlot::SetColormap(ImPlotColormap_Default);
ImPlot::PopColormap();
ImPlot::EndPlot();
}
@ -932,7 +932,7 @@ void ShowDemoWindow(bool* p_open) {
ImGui::TableSetupColumn("Voltage", ImGuiTableColumnFlags_WidthFixed, 75.0f);
ImGui::TableSetupColumn("EMG Signal");
ImGui::TableAutoHeaders();
ImPlot::SetColormap(ImPlotColormap_Cool, 10);
ImPlot::PushColormap(ImPlotColormap_Cool);
for (int row = 0; row < 10; row++)
{
@ -950,7 +950,7 @@ void ShowDemoWindow(bool* p_open) {
MyImPlot::Sparkline("##spark",data,100,0,11.0f,offset,ImPlot::GetColormapColor(row),ImVec2(-1, 35));
ImGui::PopID();
}
ImPlot::SetColormap(ImPlotColormap_Default);
ImPlot::PopColormap();
ImGui::EndTable();
}
#else
@ -979,14 +979,14 @@ void ShowDemoWindow(bool* p_open) {
ImGui::BulletText("Offsets can be negative and/or larger than the actual data count.");
ImGui::SliderInt("Offset", &offset, -2*k_points_per, 2*k_points_per);
if (ImPlot::BeginPlot("##strideoffset")) {
ImPlot::SetColormap(ImPlotColormap_Jet);
ImPlot::PushColormap(ImPlotColormap_Jet);
char buff[16];
for (int c = 0; c < k_circles; ++c) {
sprintf(buff, "Circle %d", c);
ImPlot::PlotLine(buff, &interleaved_data[c*2 + 0], &interleaved_data[c*2 + 1], k_points_per, offset, 2*k_circles*sizeof(t_float));
}
ImPlot::EndPlot();
ImPlot::SetColormap(ImPlotColormap_Default);
ImPlot::PopColormap();
}
// offset++; uncomment for animation!
}
@ -1024,7 +1024,7 @@ void ShowDemoWindow(bool* p_open) {
ImVec4(0.996f, 0.278f, 0.380f, 1.0f),
ImVec4(0.1176470593f, 0.5647059083f, 1.0f, 1.0f),
};
ImPlot::SetColormap(my_map, 3);
ImPlot::PushColormap(my_map, 3);
ImPlot::PushStyleColor(ImPlotCol_FrameBg, IM_COL32(32,51,77,255));
ImPlot::PushStyleColor(ImPlotCol_PlotBg, ImVec4(0,0,0,0));
ImPlot::PushStyleColor(ImPlotCol_PlotBorder, ImVec4(0,0,0,0));
@ -1046,7 +1046,7 @@ void ShowDemoWindow(bool* p_open) {
}
ImPlot::PopStyleColor(5);
ImPlot::PopStyleVar();
ImPlot::SetColormap(ImPlotColormap_Default);
ImPlot::PopColormap();
}
//-------------------------------------------------------------------------
if (ImGui::CollapsingHeader("Custom Rendering")) {

31
implot_internal.h
View File

@ -113,7 +113,7 @@ inline int ImPosMod(int l, int r) { return (l % r + r) % r; }
// Offset calculator helper
template <int Count>
struct ImOffsetCalculator {
ImOffsetCalculator(int* sizes) {
ImOffsetCalculator(const int* sizes) {
Offsets[0] = 0;
for (int i = 1; i < Count; ++i)
Offsets[i] = Offsets[i-1] + sizes[i-1];
@ -157,6 +157,16 @@ struct ImArray {
// [SECTION] ImPlot Structs
//-----------------------------------------------------------------------------
// Storage for colormap modifiers
struct ImPlotColormapMod {
ImPlotColormapMod(const ImVec4* colormap, int colormap_size) {
Colormap = colormap;
ColormapSize = colormap_size;
}
const ImVec4* Colormap;
int ColormapSize;
};
// ImPlotPoint with positive/negative error values
struct ImPlotPointError
{
@ -384,8 +394,9 @@ struct ImPlotContext {
ImPlotStyle Style;
ImVector<ImGuiColorMod> ColorModifiers;
ImVector<ImGuiStyleMod> StyleModifiers;
ImVec4* Colormap;
const ImVec4* Colormap;
int ColormapSize;
ImVector<ImPlotColormapMod> ColormapModifiers;
// Misc
int VisibleItemCount;
@ -458,13 +469,8 @@ float SumTickLabelHeight(const ImVector<ImPlotTick>& ticks);
// Rounds x to powers of 2,5 and 10 for generating axis labels (from Graphics Gems 1 Chapter 11.2)
double NiceNum(double x, bool round);
// Updates axis ticks, lins, and label colors
void UpdateAxisColor(int axis_flag, ImPlotAxisColor* col);
// Sets the colormap for a particular ImPlotContext
void SetColormapEx(ImPlotColormap colormap, int samples, ImPlotContext* ctx);
void SetColormapEx(const ImVec4* colors, int num_colors, ImPlotContext* ctx);
// Draws vertical text. The position is the bottom left of the text rect.
void AddTextVertical(ImDrawList *DrawList, const char *text, ImVec2 pos, ImU32 text_color);
// Calculates the size of vertical text
@ -513,10 +519,15 @@ inline T OffsetAndStride(const T* data, int idx, int count, int offset, int stri
return *(const T*)(const void*)((const unsigned char*)data + (size_t)idx * stride);
}
// Get built-in colormap data and size
const ImVec4* GetColormap(ImPlotColormap colormap, int* size_out);
// Linearly interpolates a color from the current colormap given t between 0 and 1.
ImVec4 LerpColormap(const ImVec4* colormap, int size, float t);
// Resamples a colormap. #size_out must be greater than 1.
void ResampleColormap(const ImVec4* colormap_in, int size_in, ImVec4* colormap_out, int size_out);
// Returns true if a style color is set to be automaticaly determined
inline bool ColorIsAuto(ImPlotCol idx) {
return GImPlot->Style.Colors[idx].w == -1;
}
inline bool ColorIsAuto(ImPlotCol idx) { return GImPlot->Style.Colors[idx].w == -1; }
// Recolors an item legend icon from an the current ImPlotCol if it is not automatic (i.e. alpha != -1)
inline void TryRecolorItem(ImPlotItem* item, ImPlotCol idx) {

7
implot_items.cpp
View File

@ -847,6 +847,13 @@ void PlotShaded(const char* label_id, const double* xs, const double* ys, int co
PlotShadedEx(label_id, getter1, getter2);
}
// custom
void PlotShaded(const char* label_id, ImPlotPoint (*g1)(void* data, int idx), void* data1, ImPlotPoint (*g2)(void* data, int idx), void* data2, int count, int offset) {
GetterFuncPtrImPlotPoint getter1(g1, data1, count, offset);
GetterFuncPtrImPlotPoint getter2(g2, data2, count, offset);
PlotShadedEx(label_id, getter1, getter2);
}
//-----------------------------------------------------------------------------
// PLOT BAR V
//-----------------------------------------------------------------------------