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PlotDigital

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ozlb 2020-04-29 16:32:35 +02:00 committed by GitHub
parent 9fbacad16a
commit bce306bd65
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2 changed files with 99 additions and 16 deletions
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84
implot.cpp
View File

@ -49,6 +49,7 @@ ImPlotStyle::ImPlotStyle() {
MarkerWeight = 1;
ErrorBarSize = 5;
ErrorBarWeight = 1.5;
DigitalBitHeight = 7;
Colors[ImPlotCol_Line] = IM_COL_AUTO;
Colors[ImPlotCol_Fill] = IM_COL_AUTO;
@ -398,8 +399,8 @@ struct ImPlotContext {
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
@ -907,6 +908,8 @@ bool BeginPlot(const char* title, const char* x_label, const char* y_label, cons
gp.Extents.Max.y = -INFINITY;
// clear item names
gp._LegendLabels.Buf.resize(0);
// reset digital plot items count
gp.DigitalPlotItemCnt = 0;
return true;
}
@ -1301,7 +1304,8 @@ static const ImPlotStyleVarInfo GPlotStyleVarInfo[] =
{ 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, ErrorBarWeight) }, // ImPlotStyleVar_ErrorBarWeight
{ ImGuiDataType_S32, 1, (ImU32)IM_OFFSETOF(ImPlotStyle, DigitalBitHeight) } // ImPlotStyleVar_DigitalBitHeight
};
static const ImPlotStyleVarInfo* GetPlotStyleVarInfo(ImPlotStyleVar idx)
@ -1690,6 +1694,80 @@ void Plot(const char* label_id, ImVec2 (*getter)(void* data, int idx), void* dat
ImGui::PopClipRect();
}
////////////////////////////////////////////////////////////////
void PlotDigital(const char* label_id, const float* xs, const float* ys, int count, int offset, int stride) {
ImPlotGetterData data(xs,ys,stride);
PlotDigital(label_id, &ImPlotGetter2D, (void*)&data, count, offset);
}
void PlotDigital(const char* label_id, ImVec2 (*getter)(void* data, int idx), void* data, int count, int offset)
{
IM_ASSERT_USER_ERROR(gp.CurrentPlot != NULL, "PlotDigital() Needs to be called between BeginPlot() and EndPlot()!");
ImPlotItem* item = gp.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;
ImU32 col_line = gp.Style.Colors[ImPlotCol_Line].w == -1 ? GetColorU32(item->Color) : GetColorU32(gp.Style.Colors[ImPlotCol_Line]);
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(data, i);
gp.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;
// render digital signals as "pixel bases" rectangles
if (count > 1 && rend_line) {
const int segments = count - 1;
int i1 = offset;
for (int s = 0; s < segments; ++s) {
const int i2 = (i1 + 1) % count;
ImVec2 itemData1 = getter(data, i1);
ImVec2 itemData2 = getter(data, i2);
i1 = i2;
const float mx = (gp.PixelRange.Max.x - gp.PixelRange.Min.x) / (gp.CurrentPlot->XAxis.Max - gp.CurrentPlot->XAxis.Min);
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
float y1 = (gp.PixelRange.Min.y) + ((-pixY_chOffset * gp.DigitalPlotItemCnt) - ((itemData1.y == 0.0) ? pixY_0 : pixY_1) - pixY_Offset);
float y2 = (gp.PixelRange.Min.y) + ((-pixY_chOffset * gp.DigitalPlotItemCnt) - pixY_Offset);
float l = gp.PixelRange.Min.x + mx * (itemData2.x - gp.CurrentPlot->XAxis.Min);
float r = gp.PixelRange.Min.x + mx * (itemData1.x - gp.CurrentPlot->XAxis.Min);
ImVec2 cl, cr;
cl.x = l;
cl.y = y1;
cr.x = r;
cr.y = y2;
if (!cull || gp.BB_Grid.Contains(cl) || gp.BB_Grid.Contains(cr)) {
DrawList.AddRectFilled({l, y1}, {r, y2}, col_line);
}
}
gp.DigitalPlotItemCnt++;
}
ImGui::PopClipRect();
}
////////////////////////////////////////////////////////////////
static ImVec2 ImPlotGetterBarV(void* data, int idx) {
ImPlotGetterData* data_1d = (ImPlotGetterData*)data;
return ImVec2((float)idx + data_1d->XShift, ImStrideIndex(data_1d->Ys, idx, data_1d->Stride));

5
implot.h
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@ -87,6 +87,7 @@ enum ImPlotStyleVar_ {
ImPlotStyleVar_MarkerWeight, // float, outline weight of markers in pixels
ImPlotStyleVar_ErrorBarSize, // float, error bar whisker width in pixels
ImPlotStyleVar_ErrorBarWeight, // float, error bar whisker weight in pixels
ImPlotStyleVar_DigitalBitHeight, // int, digital channels bit height (at 1)
ImPlotStyleVar_COUNT
};
@ -120,6 +121,7 @@ struct ImPlotStyle {
float MarkerWeight; // = 1, outline weight of markers in pixels
float ErrorBarSize; // = 5, error bar whisker width in pixels
float ErrorBarWeight; // = 1.5, error bar whisker weight in pixels
int DigitalBitHeight; // = 7, digital channels bit height (at 1)
ImVec4 Colors[ImPlotCol_COUNT]; // array of plot specific colors
ImPlotStyle();
};
@ -177,6 +179,9 @@ ImPlotRange GetPlotQuery();
void Plot(const char* label_id, const float* values, int count, int offset = 0, int stride = sizeof(float));
void Plot(const char* label_id, const float* xs, const float* ys, int count, int offset = 0, int stride = sizeof(float));
void Plot(const char* label_id, ImVec2 (*getter)(void* data, int idx), void* data, int count, int offset = 0);
// Plots digital channels.
void PlotDigital(const char* label_id, const float* xs, const float* ys, int count, int offset = 0, int stride = sizeof(float) + sizeof(bool));
void PlotDigital(const char* label_id, ImVec2 (*getter)(void* data, int idx), void* data, int count, int offset = 0);
// Plots vertical bars.
void PlotBar(const char* label_id, const float* values, int count, float width = 0.67f, float shift = 0, int offset = 0, int stride = sizeof(float));
void PlotBar(const char* label_id, const float* xs, const float* ys, int count, float width, int offset = 0, int stride = sizeof(float));