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add new rest local transforms getter when setting bone animations, rather than needing to reset and get current local transform

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This commit is contained in:
Nick Fisher
2024-06-03 22:30:00 +08:00
parent 7d9bc9e5cc
commit a97eea396a
1 changed files with 20 additions and 7 deletions
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27
dart_filament/lib/dart_filament/filament_viewer_impl.dart
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@@ -3,6 +3,7 @@ import 'dart:ffi';
import 'dart:io';
import 'dart:math';
import 'package:animation_tools_dart/animation_tools_dart.dart';
import 'package:dart_filament/dart_filament/compatibility/compatibility.dart';
import 'package:dart_filament/dart_filament/compatibility/native/compatibility.dart';
import 'package:dart_filament/dart_filament/entities/filament_entity.dart';
import 'package:dart_filament/dart_filament/entities/gizmo.dart';
@@ -676,14 +677,26 @@ class FilamentViewer extends AbstractFilamentViewer {
@override
Future addBoneAnimation(FilamentEntity entity, BoneAnimationData animation,
{int skinIndex = 0}) async {
if (animation.space != Space.Bone && animation.space != Space.ParentWorldRotation) {
if (animation.space != Space.Bone &&
animation.space != Space.ParentWorldRotation) {
throw UnimplementedError("TODO - support ${animation.space}");
}
if (skinIndex != 0) {
throw UnimplementedError("TODO - support skinIndex != 0 ");
}
var boneNames = await getBoneNames(entity);
await resetBones(entity);
var restLocalTransformsRaw = allocator<Float>(boneNames.length * 16);
get_rest_local_transforms(_sceneManager!, entity, skinIndex,
restLocalTransformsRaw, boneNames.length);
var restLocalTransforms = <Matrix4>[];
for (int i = 0; i < boneNames.length; i++) {
var values = <double>[];
for (int j = 0; j < 16; j++) {
values.add(restLocalTransformsRaw[(i * 16) + j]);
}
restLocalTransforms.add(Matrix4.fromList(values));
}
allocator.free(restLocalTransformsRaw);
var numFrames = animation.frameData.length;
@@ -701,8 +714,11 @@ class FilamentViewer extends AbstractFilamentViewer {
}
var boneEntity = bones[entityBoneIndex];
var baseTransform = await getLocalTransform(boneEntity);
var baseTransformInverse = Matrix4.identity()..copyInverse(baseTransform);
var baseTransform = restLocalTransforms[entityBoneIndex];
var world = await getWorldTransform(boneEntity);
world = Matrix4.identity()..setRotation(world.getRotation());
var worldInverse = Matrix4.identity()..copyInverse(world);
for (int frameNum = 0; frameNum < numFrames; frameNum++) {
var rotation = animation.frameData[frameNum][i].rotation;
@@ -713,9 +729,6 @@ class FilamentViewer extends AbstractFilamentViewer {
if (animation.space == Space.Bone) {
newLocalTransform = baseTransform * frameTransform;
} else if (animation.space == Space.ParentWorldRotation) {
var world = await getWorldTransform(boneEntity);
world = Matrix4.identity()..setRotation(world.getRotation());
var worldInverse = Matrix4.identity()..copyInverse(world);
newLocalTransform =
baseTransform * (worldInverse * frameTransform * world);
}