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| author | masterex1000 <[email protected]> | 2021-03-01 16:29:48 -0700 |
|---|---|---|
| committer | GitHub <[email protected]> | 2021-03-02 00:29:48 +0100 |
| commit | 4e6253b54686a2c353a3256947a596f3a3c9bcd0 (patch) | |
| tree | 9fe3cee6aa6fd70c13395e1c5d570b724544d322 /src | |
| parent | 5902cc6d9b95b08a4dd96461beb2afbb241a23ce (diff) | |
| download | raylib-4e6253b54686a2c353a3256947a596f3a3c9bcd0.tar.gz raylib-4e6253b54686a2c353a3256947a596f3a3c9bcd0.zip | |
Add check to flip quaternion (#1624)
Diffstat (limited to 'src')
| -rw-r--r-- | src/raymath.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/src/raymath.h b/src/raymath.h index 63fc9696..fd9b620a 100644 --- a/src/raymath.h +++ b/src/raymath.h @@ -1271,6 +1271,11 @@ RMDEF Quaternion QuaternionSlerp(Quaternion q1, Quaternion q2, float amount) float cosHalfTheta = q1.x*q2.x + q1.y*q2.y + q1.z*q2.z + q1.w*q2.w; + if (cosHalfTheta < 0) { + q2.x = -q2.x; q2.y = -q2.y; q2.z = -q2.z; q2.w = -q2.w; + cosHalfTheta = -cosHalfTheta; + } + if (fabs(cosHalfTheta) >= 1.0f) result = q1; else if (cosHalfTheta > 0.95f) result = QuaternionNlerp(q1, q2, amount); else |