33 lines
1.2 KiB
Dart
33 lines
1.2 KiB
Dart
//
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// A wrapper for morph target animation data.
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// [data] is laid out as numFrames x numMorphTargets (where each morph target is ordered according to [animatedMorphNames]).
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// [data] frame data for the morph weights used to animate the morph targets [animatedMorphNames] in mesh [meshName].
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// the morph targets specified in [morphNames] attached to mesh [meshName].
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// [animatedMorphNames] must be provided but is not used directly; this is only used to check that the eventual asset being animated contains the same morph targets in the same order.
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//
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class MorphAnimationData {
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final String meshName;
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final List<String> animatedMorphNames;
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final List<int> animatedMorphIndices;
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final List<double> data;
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MorphAnimationData(this.meshName, this.data, this.animatedMorphNames,
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this.animatedMorphIndices, this.frameLengthInMs) {
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assert(data.length == animatedMorphNames.length * numFrames);
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}
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int get numMorphTargets => animatedMorphNames.length;
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int get numFrames => data.length ~/ numMorphTargets;
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final double frameLengthInMs;
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Iterable<double> getData(String morphName) sync* {
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int index = animatedMorphNames.indexOf(morphName);
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for (int i = 0; i < numFrames; i++) {
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yield data[(i * numMorphTargets) + index];
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}
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}
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}
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