62 lines
1.8 KiB
Dart
62 lines
1.8 KiB
Dart
import 'dart:typed_data';
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import 'package:vector_math/vector_math.dart';
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class DartBoneAnimation {
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final String boneName;
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final String meshName;
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final Float32List frameData;
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double frameLengthInMs;
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DartBoneAnimation(
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this.boneName, this.meshName, this.frameData, this.frameLengthInMs);
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}
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//
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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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class MorphAnimation {
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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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MorphAnimation(
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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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}
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class BoneTransformFrameData {
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final List<Vector3> translations;
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final List<Quaternion> quaternions;
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///
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/// The length of [translations] and [quaternions] must be the same;
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/// each entry represents the Vec3/Quaternion for the given frame.
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///
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BoneTransformFrameData(this.translations, this.quaternions) {
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if (translations.length != quaternions.length) {
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throw Exception("Length of translation/quaternion frames must match");
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}
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}
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Iterable<double> getFrameData(int frame) sync* {
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yield translations[frame].x;
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yield translations[frame].y;
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yield translations[frame].z;
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yield quaternions[frame].x;
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yield quaternions[frame].y;
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yield quaternions[frame].z;
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yield quaternions[frame].w;
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}
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}
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