From 0a3442f389409adb8d04c5f73674f7f50e9bfbd2 Mon Sep 17 00:00:00 2001
From: Evan Pezent <epezent@rice.edu>
Date: Sat, 25 Jul 2020 07:52:15 -0500
Subject: [PATCH] fix issue with heatmap bounds not working correctly

---
 implot.cpp      | 2 +-
 implot_demo.cpp | 4 +++-
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/implot.cpp b/implot.cpp
index 9c630bf..2ddefe3 100644
--- a/implot.cpp
+++ b/implot.cpp
@@ -3221,7 +3221,7 @@ void RenderHeatmap(Transformer transformer, ImDrawList& DrawList, const T* value
         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);
+            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)Remap(values[i], scale_min, scale_max, T(0), T(1));
diff --git a/implot_demo.cpp b/implot_demo.cpp
index d17d4fa..c5aefb9 100644
--- a/implot_demo.cpp
+++ b/implot_demo.cpp
@@ -412,8 +412,10 @@ void ShowDemoWindow(bool* p_open) {
         ImGui::SameLine();
         static ImVec4 gray[2] = {ImVec4(0,0,0,1), ImVec4(1,1,1,1)};
         ImPlot::SetColormap(&gray[0], 2);
+        ImPlot::SetNextPlotLimits(-1,1,-1,1);
         if (ImPlot::BeginPlot("##Heatmap2",NULL,NULL,ImVec2(225,225),ImPlotFlags_ContextMenu,0,0)) {
-            ImPlot::PlotHeatmap("heat",values2,100,100,0,1,NULL);
+            ImPlot::PlotHeatmap("heat1",values2,100,100,0,1,NULL);
+            ImPlot::PlotHeatmap("heat1",values2,100,100,0,1,NULL, ImPlotPoint(-1,-1), ImPlotPoint(0,0));
             ImPlot::EndPlot();
         }
         ImPlot::SetColormap(ImPlotColormap_Default);