Closes https://github.com/assimp/assimp/issues/630: fix mis-merge.
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@ -1169,6 +1169,25 @@ void ColladaLoader::CreateAnimation( aiScene* pScene, const ColladaParser& pPars
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}
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++pos;
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}
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// https://github.com/assimp/assimp/issues/458
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// Sub-sample axis-angle channels if the delta between two consecutive
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// key-frame angles is >= 180 degrees.
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if (transforms[e.mTransformIndex].mType == Collada::TF_ROTATE && e.mSubElement == 3 && pos > 0 && pos < e.mTimeAccessor->mCount) {
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float cur_key_angle = ReadFloat(*e.mValueAccessor, *e.mValueData, pos, 0);
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float last_key_angle = ReadFloat(*e.mValueAccessor, *e.mValueData, pos - 1, 0);
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float cur_key_time = ReadFloat(*e.mTimeAccessor, *e.mTimeData, pos, 0);
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float last_key_time = ReadFloat(*e.mTimeAccessor, *e.mTimeData, pos - 1, 0);
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float last_eval_angle = last_key_angle + (cur_key_angle - last_key_angle) * (time - last_key_time) / (cur_key_time - last_key_time);
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float delta = std::fabs(cur_key_angle - last_eval_angle);
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if (delta >= 180.0f) {
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int subSampleCount = static_cast<int>(std::floorf(delta / 90.0f));
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if (cur_key_time != time) {
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float nextSampleTime = time + (cur_key_time - time) / subSampleCount;
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nextTime = std::min(nextTime, nextSampleTime);
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}
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}
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}
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}
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// no more keys on any channel after the current time -> we're done
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