void GPBFile::decomposeTransformAnimationChannel(Animation* animation, const AnimationChannel* channel)
{
const std::vector<float>& keyTimes = channel->getKeyTimes();
const std::vector<float>& keyValues = channel->getKeyValues();
const size_t keyTimesSize = keyTimes.size();
const size_t keyValuesSize = keyValues.size();
std::vector<float> scaleKeyValues;
std::vector<float> rotateKeyValues;
std::vector<float> translateKeyValues;
scaleKeyValues.reserve(keyTimesSize * 3);
rotateKeyValues.reserve(keyTimesSize * 4);
translateKeyValues.reserve(keyTimesSize * 3);
for (size_t kv = 0; kv < keyValuesSize; kv += 10)
{
scaleKeyValues.push_back(keyValues[kv]);
scaleKeyValues.push_back(keyValues[kv+1]);
scaleKeyValues.push_back(keyValues[kv+2]);
rotateKeyValues.push_back(keyValues[kv+3]);
rotateKeyValues.push_back(keyValues[kv+4]);
rotateKeyValues.push_back(keyValues[kv+5]);
rotateKeyValues.push_back(keyValues[kv+6]);
translateKeyValues.push_back(keyValues[kv+7]);
translateKeyValues.push_back(keyValues[kv+8]);
translateKeyValues.push_back(keyValues[kv+9]);
}
// replace transform animation channel with translate, rotate and scale animation channels
// Don't add the scale channel if all the key values are close to 1.0
size_t oneCount = (size_t)std::count_if(scaleKeyValues.begin(), scaleKeyValues.end(), isAlmostOne);
if (scaleKeyValues.size() != oneCount)
{
AnimationChannel* scaleChannel = new AnimationChannel();
scaleChannel->setTargetId(channel->getTargetId());
scaleChannel->setKeyTimes(channel->getKeyTimes());
scaleChannel->setTangentsIn(channel->getTangentsIn());
scaleChannel->setTangentsOut(channel->getTangentsOut());
scaleChannel->setInterpolations(channel->getInterpolationTypes());
scaleChannel->setTargetAttribute(Transform::ANIMATE_SCALE);
scaleChannel->setKeyValues(scaleKeyValues);
scaleChannel->removeDuplicates();
animation->add(scaleChannel);
}
AnimationChannel* rotateChannel = new AnimationChannel();
rotateChannel->setTargetId(channel->getTargetId());
rotateChannel->setKeyTimes(channel->getKeyTimes());
rotateChannel->setTangentsIn(channel->getTangentsIn());
rotateChannel->setTangentsOut(channel->getTangentsOut());
rotateChannel->setInterpolations(channel->getInterpolationTypes());
rotateChannel->setTargetAttribute(Transform::ANIMATE_ROTATE);
rotateChannel->setKeyValues(rotateKeyValues);
rotateChannel->removeDuplicates();
animation->add(rotateChannel);
AnimationChannel* translateChannel = new AnimationChannel();
translateChannel->setTargetId(channel->getTargetId());
translateChannel->setKeyTimes(channel->getKeyTimes());
translateChannel->setTangentsIn(channel->getTangentsIn());
translateChannel->setTangentsOut(channel->getTangentsOut());
translateChannel->setInterpolations(channel->getInterpolationTypes());
translateChannel->setTargetAttribute(Transform::ANIMATE_TRANSLATE);
translateChannel->setKeyValues(translateKeyValues);
translateChannel->removeDuplicates();
animation->add(translateChannel);
}
