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reorder morph animations according to actual mesh morph targets

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This commit is contained in:
Nick Fisher
2023-10-18 16:04:14 +08:00
parent 50c47fe908
commit ed3555c237
5 changed files with 34 additions and 36 deletions
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1
lib/animations/animation_builder.dart
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@@ -49,7 +49,6 @@ class AnimationBuilder {
meshName,
morphData,
_morphTargets.map((i) => availableMorphs[i]).toList(),
_morphTargets,
_frameLengthInMs);
}

26
lib/animations/animation_data.dart
View File

@@ -1,32 +1,30 @@
//
// A wrapper for morph target animation data.
// [data] is laid out as numFrames x numMorphTargets (where each morph target is ordered according to [animatedMorphNames]).
// [data] frame data for the morph weights used to animate the morph targets [animatedMorphNames] in mesh [meshName].
// the morph targets specified in [morphNames] attached to mesh [meshName].
// [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.
//
import 'dart:typed_data';
///
/// Specifies frame data (i.e. weights) to animate the morph targets contained in [morphTargets] under a mesh named [mesh].
/// [data] is laid out as numFrames x numMorphTargets.
/// Each frame is [numMorphTargets] in length, where the index of each weight corresponds to the respective index in [morphTargets].
/// [morphTargets] must be some subset of the actual morph targets under [mesh] (though the order of these does not need to match).
///
class MorphAnimationData {
final String meshName;
final List<String> animatedMorphNames;
final List<int> animatedMorphIndices;
final List<String> morphTargets;
final List<double> data;
MorphAnimationData(this.meshName, this.data, this.animatedMorphNames,
this.animatedMorphIndices, this.frameLengthInMs) {
assert(data.length == animatedMorphNames.length * numFrames);
MorphAnimationData(
this.meshName, this.data, this.morphTargets, this.frameLengthInMs) {
assert(data.length == morphTargets.length * numFrames);
}
int get numMorphTargets => animatedMorphNames.length;
int get numMorphTargets => morphTargets.length;
int get numFrames => data.length ~/ numMorphTargets;
final double frameLengthInMs;
Iterable<double> getData(String morphName) sync* {
int index = animatedMorphNames.indexOf(morphName);
int index = morphTargets.indexOf(morphName);
for (int i = 0; i < numFrames; i++) {
yield data[(i * numMorphTargets) + index];
}