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premature optimization: remove another branch

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This commit is contained in:
Andrew Meadows 2015-09-18 10:16:19 -07:00
parent a85afb5280
commit 4cb2249cda
1 changed files with 2 additions and 6 deletions
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8
libraries/animation/src/RotationAccumulator.cpp
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@ -12,12 +12,8 @@
#include <glm/gtx/quaternion.hpp>
void RotationAccumulator::add(glm::quat rotation) {
// make sure both quaternions are on the same hyper-hemisphere before we add them
if (glm::dot(_rotationSum, rotation) < 0.0f) {
rotation = -rotation;
}
// sum the rotation linearly (lerp)
_rotationSum += rotation;
// make sure both quaternions are on the same hyper-hemisphere before we add them linearly (lerp)
_rotationSum += copysignf(1.0f, glm::dot(_rotationSum, rotation)) * rotation;
++_numRotations;
}