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GLTF exporter: convert animation time from ticks to seconds

pull/1263/head
jamesgk 2017-05-11 11:04:23 -07:00
parent 9b2671b280
commit c33039d682
1 changed files with 4 additions and 3 deletions
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7
code/glTFExporter.cpp
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@ -840,7 +840,7 @@ void glTFExporter::ExportMetadata()
asset.generator = buffer;
}
inline void ExtractAnimationData(Asset& mAsset, std::string& animId, Ref<Animation>& animRef, Ref<Buffer>& buffer, const aiNodeAnim* nodeChannel)
inline void ExtractAnimationData(Asset& mAsset, std::string& animId, Ref<Animation>& animRef, Ref<Buffer>& buffer, const aiNodeAnim* nodeChannel, float ticksPerSecond)
{
// Loop over the data and check to see if it exactly matches an existing buffer.
// If yes, then reference the existing corresponding accessor.
@ -867,8 +867,9 @@ inline void ExtractAnimationData(Asset& mAsset, std::string& animId, Ref<Animati
timeData.resize(numKeyframes);
for (size_t i = 0; i < numKeyframes; ++i) {
size_t frameIndex = i * nodeChannel->mNumPositionKeys / numKeyframes;
// mTime is measured in ticks, but GLTF time is measured in seconds, so convert.
// Check if we have to cast type here. e.g. uint16_t()
timeData[i] = nodeChannel->mPositionKeys[frameIndex].mTime;
timeData[i] = nodeChannel->mPositionKeys[frameIndex].mTime / ticksPerSecond;
}
Ref<Accessor> timeAccessor = ExportData(mAsset, animId, buffer, numKeyframes, &timeData[0], AttribType::SCALAR, AttribType::SCALAR, ComponentType_FLOAT);
@ -949,7 +950,7 @@ void glTFExporter::ExportAnimations()
Ref<Animation> animRef = mAsset->animations.Create(name);
/******************* Parameters ********************/
ExtractAnimationData(*mAsset, name, animRef, bufferRef, nodeChannel);
ExtractAnimationData(*mAsset, name, animRef, bufferRef, nodeChannel, anim->mTicksPerSecond);
for (unsigned int j = 0; j < 3; ++j) {
std::string channelType;