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finalize bone transform animation

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This commit is contained in:
Nick Fisher
2022-12-17 16:31:20 +08:00
parent 4ecf83cced
commit 5a6029a7f6
17 changed files with 581 additions and 476 deletions
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113
lib/animations/animations.dart
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@@ -1,47 +1,87 @@
class Vec3 {
final double x;
final double y;
final double z;
import 'dart:typed_data';
Vec3({this.x = 0, this.y = 0, this.z = 0});
import 'package:vector_math/vector_math.dart';
factory Vec3.from(List<double> vals) =>
Vec3(x: vals[0], y: vals[1], z: vals[2]);
// class Vec3 {
// final double x;
// final double y;
// final double z;
// Vec3({this.x = 0, this.y = 0, this.z = 0});
// factory Vec3.from(List<double> vals) =>
// Vec3(x: vals[0], y: vals[1], z: vals[2]);
// }
// class Quaternion {
// double x = 0;
// double y = 0;
// double z = 0;
// double w = 1;
// Quaternion({this.x = 0, this.y = 0, this.z = 0, this.w = 1.0});
// factory Quaternion.from(List<double> vals) =>
// Quaternion(x: vals[0], y: vals[1], z: vals[2], w: vals[3]);
// }
class BoneAnimation {
final List<String> boneNames;
final List<String> meshNames;
final Float32List frameData;
BoneAnimation(this.boneNames, this.meshNames, this.frameData);
List<List> toList() {
return [boneNames, meshNames, frameData];
}
}
class Quaternion {
double x = 0;
double y = 0;
double z = 0;
double w = 1;
class Animation {
late final Float32List? morphData;
final int numMorphWeights;
Quaternion({this.x = 0, this.y = 0, this.z = 0, this.w = 1.0});
final int numFrames;
final double frameLengthInMs;
factory Quaternion.from(List<double> vals) =>
Quaternion(x: vals[0], y: vals[1], z: vals[2], w: vals[3]);
final List<BoneAnimation>? boneAnimations;
Animation(this.morphData, this.numMorphWeights, this.boneAnimations,
this.numFrames, this.frameLengthInMs) {
if (morphData != null && morphData!.length != numFrames * numMorphWeights) {
throw Exception("Mismatched animation data with frame length");
}
}
Animation.from(
{required List<List<double>> morphData,
required this.numMorphWeights,
this.boneAnimations,
required this.numFrames,
required this.frameLengthInMs}) {
if (morphData.length != numFrames) {
throw Exception("Mismatched animation data with frame length");
}
this.morphData = Float32List(numMorphWeights * numFrames);
for (int i = 0; i < numFrames; i++) {
this.morphData!.setRange((i * numMorphWeights),
(i * numMorphWeights) + numMorphWeights, morphData[i]);
}
}
}
class BoneTransform {
final List<Vec3> translations;
class BoneTransformFrameData {
final List<Vector3> translations;
final List<Quaternion> quaternions;
///
/// The length of [translations] and [quaternions] must be the same;
/// each entry represents the Vec3/Quaternion for the given frame.
///
BoneTransform(this.translations, this.quaternions) {
BoneTransformFrameData(this.translations, this.quaternions) {
if (translations.length != quaternions.length) {
throw Exception("Length of translation/quaternion frames must match");
}
// for (int i = 0; i < quaternions.length; i++) {
// _frameData.add(translations[i].x);
// _frameData.add(translations[i].y);
// _frameData.add(translations[i].z);
// _frameData.add(quaternions[i].x);
// _frameData.add(quaternions[i].y);
// _frameData.add(quaternions[i].z);
// _frameData.add(quaternions[i].w);
// }
}
Iterable<double> getFrameData(int frame) sync* {
@@ -54,22 +94,3 @@ class BoneTransform {
yield quaternions[frame].w;
}
}
class BoneAnimation {
final List<BoneTransform> boneTransforms;
final List<String> boneNames;
final List<String> meshNames;
final int numFrames;
BoneAnimation(
this.boneTransforms, this.boneNames, this.meshNames, this.numFrames);
Iterable<double> toFrameData() sync* {
for (int i = 0; i < numFrames; i++) {
for (int j = 0; j < boneTransforms.length; j++) {
yield* boneTransforms[j].getFrameData(i);
}
}
}
}