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add guard against div-by-0 when processing SDL pinch events

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brentfpage 2026-10-11 10:33:14 -07:00
parent 8c8802ed31
commit b0438d27a4
1 changed files with 2 additions and 0 deletions
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imgui.cpp
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@ -2086,6 +2086,8 @@ void ImGuiIO::AddPinchUpdateEvent(float scale, float span_x, float span_y, float
e.Source = ImGuiInputSource_Mouse;
e.EventId = g.InputEventsNextEventId++;
float norm = ImSqrt(ImPow(span_x,2) + ImPow(span_y,2));
if(norm == 0)
return;
e.MouseWheel.WheelX = (1-scale)*100*span_x/norm;
e.MouseWheel.WheelY = (1-scale)*100*span_y/norm;
e.MouseWheel.MouseSource = g.InputEventsNextMouseSource;