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Feat: Add Vertical and Horizontal markers #702

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Merged
brenocq merged 2 commits into from
Jun 2, 2026
+12 −4
Merged

Feat: Add Vertical and Horizontal markers #702

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002074f
Add Vertical and Horizontal markers
bruno-f-cruz Apr 30, 2026
6ae3ad4
feat: centralize markers/texts in marker demo
brenocq Jun 2, 2026
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2 changes: 2 additions & 0 deletions implot.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -307,6 +307,8 @@ const char* GetMarkerName(ImPlotMarker marker) {
case ImPlotMarker_Cross: return "Cross";
case ImPlotMarker_Plus: return "Plus";
case ImPlotMarker_Asterisk: return "Asterisk";
case ImPlotMarker_Vertical: return "Vertical";
case ImPlotMarker_Horizontal: return "Horizontal";
default: return "";
}
}
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2 changes: 2 additions & 0 deletions implot.h
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Expand Up @@ -448,6 +448,8 @@ enum ImPlotMarker_ {
ImPlotMarker_Cross, // a cross marker (not fill-able)
ImPlotMarker_Plus, // a plus marker (not fill-able)
ImPlotMarker_Asterisk, // a asterisk marker (not fill-able)
ImPlotMarker_Vertical, // a vertical line marker (not fill-able)
ImPlotMarker_Horizontal, // a horizontal line marker (not fill-able)
ImPlotMarker_COUNT
};

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8 changes: 4 additions & 4 deletions implot_demo.cpp
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Expand Up @@ -1078,7 +1078,7 @@ void Demo_MarkersAndText() {
if (ImPlot::BeginPlot("##MarkerStyles", ImVec2(-1,0), ImPlotFlags_CanvasOnly)) {

ImPlot::SetupAxes(nullptr, nullptr, ImPlotAxisFlags_NoDecorations, ImPlotAxisFlags_NoDecorations);
ImPlot::SetupAxesLimits(0, 10, 0, 12);
ImPlot::SetupAxesLimits(0, 10, -2, 12);

ImS8 xs[2] = {1,4};
ImS8 ys[2] = {10,11};
Expand All @@ -1101,11 +1101,11 @@ void Demo_MarkersAndText() {
ys[0]--; ys[1]--;
}

ImPlot::PlotText("Filled Markers", 2.5f, 6.0f);
ImPlot::PlotText("Open Markers", 7.5f, 6.0f);
ImPlot::PlotText("Filled Markers", 2.5f, 5.0f);
ImPlot::PlotText("Open Markers", 7.5f, 5.0f);

ImPlot::PushStyleColor(ImPlotCol_InlayText, ImVec4(1,0,1,1));
ImPlot::PlotText("Vertical Text", 5.0f, 6.0f, ImVec2(0,0), {ImPlotProp_Flags, ImPlotTextFlags_Vertical});
ImPlot::PlotText("Vertical Text", 5.0f, 5.0f, ImVec2(0,0), {ImPlotProp_Flags, ImPlotTextFlags_Vertical});
ImPlot::PopStyleColor();

ImPlot::EndPlot();
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4 changes: 4 additions & 0 deletions implot_items.cpp
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Expand Up @@ -1821,6 +1821,8 @@ constexpr ImVec2 MARKER_LINE_RIGHT[6] = {ImVec2(1,0), ImVec2(-0.5, SQRT_3_2)
constexpr ImVec2 MARKER_LINE_ASTERISK[6] = {ImVec2(-SQRT_3_2, -0.5f), ImVec2(SQRT_3_2, 0.5f), ImVec2(-SQRT_3_2, 0.5f), ImVec2(SQRT_3_2, -0.5f), ImVec2(0, -1), ImVec2(0, 1)};
constexpr ImVec2 MARKER_LINE_PLUS[4] = {ImVec2(-1, 0), ImVec2(1, 0), ImVec2(0, -1), ImVec2(0, 1)};
constexpr ImVec2 MARKER_LINE_CROSS[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)};
constexpr ImVec2 MARKER_LINE_VERTICAL[2] = {ImVec2(0, -1), ImVec2(0, 1)};
constexpr ImVec2 MARKER_LINE_HORIZONTAL[2] = {ImVec2(-1, 0), ImVec2(1, 0)};

template <typename _Getter, typename _GetterFillColor, typename _GetterLineColor, typename _GetterSize>
void RenderMarkers(const _Getter& getter, ImPlotMarker marker, bool rend_fill, const _GetterFillColor& col_fill_getter, bool rend_line, const _GetterLineColor& col_line_getter, const _GetterSize& size_getter, float weight) {
Expand All @@ -1847,6 +1849,8 @@ void RenderMarkers(const _Getter& getter, ImPlotMarker marker, bool rend_fill, c
case ImPlotMarker_Asterisk : RenderPrimitives3<RendererMarkersLine>(getter,col_line_getter,size_getter,MARKER_LINE_ASTERISK,6,weight); break;
case ImPlotMarker_Plus : RenderPrimitives3<RendererMarkersLine>(getter,col_line_getter,size_getter,MARKER_LINE_PLUS, 4,weight); break;
case ImPlotMarker_Cross : RenderPrimitives3<RendererMarkersLine>(getter,col_line_getter,size_getter,MARKER_LINE_CROSS, 4,weight); break;
case ImPlotMarker_Vertical : RenderPrimitives3<RendererMarkersLine>(getter,col_line_getter,size_getter,MARKER_LINE_VERTICAL,2,weight); break;
case ImPlotMarker_Horizontal: RenderPrimitives3<RendererMarkersLine>(getter,col_line_getter,size_getter,MARKER_LINE_HORIZONTAL,2,weight); break;
}
}
}
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