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DrawList: improved handling of very small circles.

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See testbed case 354.
This commit is contained in:
Mikko Mononen 2026-10-07 20:48:27 +02:00 committed by ocornut
parent dc09bbee1e
commit 6aa6626f29
1 changed files with 6 additions and 5 deletions
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11
imgui_draw.cpp
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@ -2761,13 +2761,14 @@ void ImDrawList::AddCircleFilled(const ImVec2& center, float radius, ImU32 col,
if ((col & IM_COL32_A_MASK) == 0)
return;
const float diameter = radius * 2.0f;
if (diameter < _FringeScale) IM_UNLIKELY
// Minimum radius, before the edge-AA will overlap.
const float min_radius = _FringeScale * 1.41421356f * 0.5f;
if (radius < min_radius) IM_UNLIKELY
{
if (diameter < (1.0f / 255.0f) * _FringeScale)
if (radius < (1.0f / 255.0f) * min_radius)
return;
col = ImAlphaMultiply(col, diameter * _InvFringeScale);
radius = _FringeScale * 0.5f;
col = ImAlphaMultiply(col, radius / min_radius);
radius = min_radius;
}
if (num_segments <= 0 && radius <= _Data->ArcFastRadiusCutoff)