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DrawList: added macro to have consistent check for rounding

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- use macro to test if rounding value is worthy
- changed threshold to be a bit smaller (for smoother handling of small radius), and relative to fringe
This commit is contained in:
Mikko Mononen
2026-06-04 00:57:20 +03:00
committed by ocornut
parent f25ae01030
commit 475c5dadcd
1 changed files with 11 additions and 7 deletions
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18
imgui_draw.cpp
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@@ -853,6 +853,9 @@ float ImDrawList::_CalculateCenterBiasedOffset(float thickness)
}
IM_MSVC_RUNTIME_CHECKS_RESTORE
// Check if R is considered to be worthy rounding. Can be only used within ImDrawList due to use of _FringeScale.
#define IM_HAS_ROUNDING(RAD) ((RAD) >= (0.25f * _FringeScale))
// On AddPolyline() and AddConvexPolyFilled() we intentionally avoid using ImVec2 and superfluous function calls to optimize debug/non-inlined builds.
// - Those macros expects l-values and need to be used as their own statement.
// - Those macros are intentionally not surrounded by the 'do {} while (0)' idiom because even that translates to runtime with debug compilers.
@@ -1872,7 +1875,7 @@ void ImDrawList::AddConvexPolyFilledLegacy(const ImVec2* points, const int point
void ImDrawList::_PathArcToFastEx(const ImVec2& center, float radius, int a_min_sample, int a_max_sample, int a_step)
{
if (radius < 0.5f)
if (!IM_HAS_ROUNDING(radius))
{
_Path.push_back(center);
return;
@@ -1964,7 +1967,7 @@ void ImDrawList::_PathArcToFastEx(const ImVec2& center, float radius, int a_min_
void ImDrawList::_PathArcToN(const ImVec2& center, float radius, float a_min, float a_max, int num_segments)
{
if (radius < 0.5f)
if (!IM_HAS_ROUNDING(radius))
{
_Path.push_back(center);
return;
@@ -1983,7 +1986,7 @@ void ImDrawList::_PathArcToN(const ImVec2& center, float radius, float a_min, fl
// 0: East, 3: South, 6: West, 9: North, 12: East
void ImDrawList::PathArcToFast(const ImVec2& center, float radius, int a_min_of_12, int a_max_of_12)
{
if (radius < 0.5f)
if (!IM_HAS_ROUNDING(radius))
{
_Path.push_back(center);
return;
@@ -1993,7 +1996,7 @@ void ImDrawList::PathArcToFast(const ImVec2& center, float radius, int a_min_of_
void ImDrawList::PathArcTo(const ImVec2& center, float radius, float a_min, float a_max, int num_segments)
{
if (radius < 0.5f)
if (!IM_HAS_ROUNDING(radius))
{
_Path.push_back(center);
return;
@@ -2160,7 +2163,8 @@ void ImDrawList::PathBezierQuadraticCurveTo(const ImVec2& p2, const ImVec2& p3,
void ImDrawList::PathRect(const ImVec2& a, const ImVec2& b, float rounding, ImDrawFlags flags)
{
if (rounding >= 0.5f)
const bool has_rounding = IM_HAS_ROUNDING(rounding);
if (has_rounding)
{
if ((flags & ImDrawFlags_RoundCornersMask_) == 0)
flags |= ImDrawFlags_RoundCornersAll;
@@ -2168,7 +2172,7 @@ void ImDrawList::PathRect(const ImVec2& a, const ImVec2& b, float rounding, ImDr
rounding = ImMin(rounding, ImFabs(b.x - a.x) * (((flags & ImDrawFlags_RoundCornersTop) == ImDrawFlags_RoundCornersTop) || ((flags & ImDrawFlags_RoundCornersBottom) == ImDrawFlags_RoundCornersBottom) ? 0.5f : 1.0f) - 1.0f);
rounding = ImMin(rounding, ImFabs(b.y - a.y) * (((flags & ImDrawFlags_RoundCornersLeft) == ImDrawFlags_RoundCornersLeft) || ((flags & ImDrawFlags_RoundCornersRight) == ImDrawFlags_RoundCornersRight) ? 0.5f : 1.0f) - 1.0f);
}
if (rounding < 0.5f || (flags & ImDrawFlags_RoundCornersMask_) == ImDrawFlags_RoundCornersNone)
if (!has_rounding || (flags & ImDrawFlags_RoundCornersMask_) == ImDrawFlags_RoundCornersNone)
{
PathLineTo(a);
PathLineTo(ImVec2(b.x, a.y));
@@ -2716,7 +2720,7 @@ void ImDrawList::AddRect(const ImVec2& p_min, const ImVec2& p_max, ImU32 col, fl
return;
}
const bool has_rounding = (rounding >= _FringeScale * 0.5f);
const bool has_rounding = IM_HAS_ROUNDING(rounding);
// Calculate the outer boundary of the rectangle based on the stroke position.
ImVec2 outer_min = p_min;