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common: increase precision for bezier calculations

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The epsilon value currently used for the precision
of Beziers calculations is sufficient for comparing
curve lengths. However, for the parameter t, which
ranges from 0 to 1, an accuracy of 1% can introduce
errors.
The solution is to increase the precision for the t
parameter while keeping the rest of the calculations
at the previously used epsilon value.

@Issue: https://github.com/thorvg/thorvg/issues/2619
This commit is contained in:
Mira Grudzinska 2024-08-08 11:42:55 +02:00 • committed by Hermet Park
parent 5ebe33af90
commit efcaa807ab
1 changed files with 1 additions and 1 deletions
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2
src/common/tvgMath.cpp
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@ -79,7 +79,7 @@ float _bezAt(const Bezier& bz, float at, float length, LengthFunc lineLengthFunc
Bezier left;
right.split(t, left);
length = _bezLength(left, lineLengthFunc);
if (fabsf(length - at) < BEZIER_EPSILON || fabsf(smallest - biggest) < BEZIER_EPSILON) {
if (fabsf(length - at) < BEZIER_EPSILON || fabsf(smallest - biggest) < 1e-3f) {
break;
}
if (length < at) {