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Fix inaccurate delta rotation axis

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luiscuenca 2018-07-05 11:47:10 -07:00
parent 01c4b57d11
commit b2e02e20cc
1 changed files with 2 additions and 1 deletions

3
libraries/physics/src/CharacterController.cpp
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@ -269,7 +269,8 @@ void CharacterController::playerStep(btCollisionWorld* collisionWorld, btScalar
}
btQuaternion deltaRot = desiredRot * startRot.inverse();
float angularSpeed = deltaRot.getAngle() / _followTimeRemaining;
btQuaternion angularDisplacement = btQuaternion(deltaRot.getAxis(), angularSpeed * dt);
glm::vec3 rotationAxis = glm::normalize(glm::axis(bulletToGLM(deltaRot))); // deltaRot.getAxis() is inaccurate
btQuaternion angularDisplacement = btQuaternion(glmToBullet(rotationAxis), angularSpeed * dt);
btQuaternion endRot = angularDisplacement * startRot;
// in order to accumulate displacement of avatar position, we need to take _shapeLocalOffset into account.