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Merge pull request #5520 from howard-stearns/single-animation-vs-blend

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Don't let individual startAnimation get messed up by blend/fade.
This commit is contained in:
Seth Alves 2015-08-06 18:55:14 -07:00
commit 66f595f4b2
1 changed files with 6 additions and 2 deletions
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8
libraries/animation/src/Rig.cpp
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@ -70,6 +70,7 @@ void Rig::startAnimation(const QString& url, float fps, float priority,
handle = createAnimationHandle();
handle->setURL(url);
}
handle->setFade(1.0f); // If you want to fade, use the startAnimationByRole system.
handle->setFPS(fps);
handle->setPriority(priority);
handle->setLoop(loop);
@ -150,7 +151,8 @@ void Rig::stopAnimationByRole(const QString& role) {
void Rig::stopAnimation(const QString& url) {
foreach (const AnimationHandlePointer& handle, getRunningAnimations()) {
if (handle->getURL() == url) {
handle->stop();
handle->setFade(0.0f); // right away. Will be remove during updateAnimations, without locking
handle->setFadePerSecond(-1.0f); // so that the updateAnimation code notices
}
}
}
@ -472,7 +474,9 @@ void Rig::updateAnimations(float deltaTime, glm::mat4 parentTransform) {
float fadeSumSoFar = 0.0f;
foreach (const AnimationHandlePointer& handle, _runningAnimations) {
handle->setPriority(1.0f);
float normalizedFade = handle->getFade() / fadeTotal;
// if no fadeTotal, everyone's (typically just one running) is starting at zero. In that case, blend equally.
float normalizedFade = (fadeTotal != 0.0f) ? (handle->getFade() / fadeTotal) : (1.0f / _runningAnimations.count());
assert(normalizedFade != 0.0f);
// simulate() will blend each animation result into the result so far, based on the pairwise mix at at each step.
// i.e., slerp the 'mix' distance from the result so far towards this iteration's animation result.
// The formula here for mix is based on the idea that, at each step: