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Code Issues Projects Releases Packages Wiki Activity Actions 5

renderer/shape: Apply the magic number kappa to achieve rounded corners.

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The magic number kappa (0.552284), which is associated with the bezier curve,
has been introduced. This formula is supposed to be applied to the rounded corners
of the rectangle to ensure consistent drawing results.

Issue: https://github.com/thorvg/thorvg/issues/1824
This commit is contained in:
Hermet Park 2023-12-09 18:05:57 +09:00
parent e928307ced
commit f594806dd3
1 changed files with 2 additions and 2 deletions
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4
src/renderer/tvgShape.cpp
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@ -219,8 +219,8 @@ Result Shape::appendRect(float x, float y, float w, float h, float rx, float ry)
} else if (mathEqual(rx, halfW) && mathEqual(ry, halfH)) {
return appendCircle(x + (w * 0.5f), y + (h * 0.5f), rx, ry);
} else {
auto hrx = rx * 0.5f;
auto hry = ry * 0.5f;
auto hrx = rx * PATH_KAPPA;
auto hry = ry * PATH_KAPPA;
pImpl->grow(10, 17);
pImpl->moveTo(x + rx, y);
pImpl->lineTo(x + w - rx, y);