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bezier: fix with first point being non-0

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This commit is contained in:
Vaxry 2025-09-30 15:05:40 +01:00
parent a20932e200
commit 1f80045da1
Signed by: vaxry
GPG key ID: 665806380871D640
1 changed files with 2 additions and 2 deletions
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4
src/animation/BezierCurve.cpp
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@ -46,14 +46,14 @@ float CBezierCurve::getXForT(float const& t) const {
float t2 = t * t;
float t3 = t2 * t;
return (3 * t * (1 - t) * (1 - t) * m_vPoints[1].x) + (3 * t2 * (1 - t) * m_vPoints[2].x) + (t3 * m_vPoints[3].x);
return ((1 - t) * (1 - t) * (1 - t) * m_vPoints[0].x) + (3 * t * (1 - t) * (1 - t) * m_vPoints[1].x) + (3 * t2 * (1 - t) * m_vPoints[2].x) + (t3 * m_vPoints[3].x);
}
float CBezierCurve::getYForT(float const& t) const {
float t2 = t * t;
float t3 = t2 * t;
return (3 * t * (1 - t) * (1 - t) * m_vPoints[1].y) + (3 * t2 * (1 - t) * m_vPoints[2].y) + (t3 * m_vPoints[3].y);
return ((1 - t) * (1 - t) * (1 - t) * m_vPoints[0].y) +(3 * t * (1 - t) * (1 - t) * m_vPoints[1].y) + (3 * t2 * (1 - t) * m_vPoints[2].y) + (t3 * m_vPoints[3].y);
}
// Todo: this probably can be done better and faster