Method ExportAnimations

code/AssetLib/glTF/glTFExporter.cpp:1001–1070

}

void glTFExporter::ExportAnimations()
{
    Ref<Buffer> bufferRef = mAsset->buffers.Get(unsigned (0));

    for (unsigned int i = 0; i < mScene->mNumAnimations; ++i) {
        const aiAnimation* anim = mScene->mAnimations[i];

        std::string nameAnim = "anim";
        if (anim->mName.length > 0) {
            nameAnim = anim->mName.C_Str();
        }

        for (unsigned int channelIndex = 0; channelIndex < anim->mNumChannels; ++channelIndex) {
            const aiNodeAnim* nodeChannel = anim->mChannels[channelIndex];

            // It appears that assimp stores this type of animation as multiple animations.
            // where each aiNodeAnim in mChannels animates a specific node.
            std::string name = nameAnim + "_" + ai_to_string(channelIndex);
            name = mAsset->FindUniqueID(name, "animation");
            Ref<Animation> animRef = mAsset->animations.Create(name);

            /******************* Parameters ********************/
            ExtractAnimationData(*mAsset, name, animRef, bufferRef, nodeChannel, static_cast<float>(anim->mTicksPerSecond));

            for (unsigned int j = 0; j < 3; ++j) {
                std::string channelType;
                int channelSize=0;
                switch (j) {
                    case 0:
                        channelType = "rotation";
                        channelSize = nodeChannel->mNumRotationKeys;
                        break;
                    case 1:
                        channelType = "scale";
                        channelSize = nodeChannel->mNumScalingKeys;
                        break;
                    case 2:
                        channelType = "translation";
                        channelSize = nodeChannel->mNumPositionKeys;
                        break;
                }

                if (channelSize < 1) { continue; }

                Animation::AnimChannel tmpAnimChannel;
                Animation::AnimSampler tmpAnimSampler;

                tmpAnimChannel.sampler = name + "_" + channelType;
                tmpAnimChannel.target.path = channelType;
                tmpAnimSampler.output = channelType;
                tmpAnimSampler.id = name + "_" + channelType;

                tmpAnimChannel.target.id = mAsset->nodes.Get(nodeChannel->mNodeName.C_Str());

                tmpAnimSampler.input = "TIME";
                tmpAnimSampler.interpolation = "LINEAR";

                animRef->Channels.push_back(tmpAnimChannel);