33 lines
1.0 KiB
Dart
33 lines
1.0 KiB
Dart
//
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// Frame weights for the morph targets specified in [morphNames] attached to mesh [meshName].
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// morphData is laid out as numFrames x numMorphTargets
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// where the weights are in the same order as [morphNames].
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// [morphNames] 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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import 'dart:typed_data';
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class MorphAnimationData {
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final String meshName;
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final List<String> morphNames;
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final Float32List data;
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MorphAnimationData(
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this.meshName, this.data, this.morphNames, this.frameLengthInMs) {
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assert(data.length == morphNames.length * numFrames);
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}
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int get numMorphWeights => morphNames.length;
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int get numFrames => data.length ~/ numMorphWeights;
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final double frameLengthInMs;
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Iterable<double> getData(String morphName) sync* {
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int index = morphNames.indexOf(morphName);
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for (int i = 0; i < numFrames; i++) {
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yield data[(i * numMorphWeights) + index];
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}
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}
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}
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