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More elegant solution to the rotation aliasing issue. Also fixes Inherit Rotation issues.

This commit is contained in:
Chris Foster 2015-04-16 12:22:43 -04:00
parent d0628b77f6
commit dafc79fbb0
Notes: blender-bot 2023-02-14 20:05:19 +01:00 
Referenced by issue #41229, Blender 2.71 and DirectX Exporter 3.1.0
1 changed files with 16 additions and 6 deletions
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22
io_scene_x/export_x.py
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@ -18,7 +18,7 @@
# <pep8 compliant>
from math import radians
from math import radians, pi
import bpy
from mathutils import *
@ -1144,19 +1144,21 @@ class ArmatureAnimationGenerator(GenericAnimationGenerator):
for Bone, BoneAnimation in \
zip(ArmatureObject.pose.bones, BoneAnimations):
Rotation = ArmatureObject.data.bones[Bone.name] \
.matrix.to_quaternion() * \
Bone.matrix_basis.to_quaternion()
PoseMatrix = Matrix()
if Bone.parent:
PoseMatrix = Bone.parent.matrix.inverted()
PoseMatrix *= Bone.matrix
Rotation = PoseMatrix.to_quaternion().normalized()
OldRotation = BoneAnimation.RotationKeys[-1] if \
len(BoneAnimation.RotationKeys) else Rotation
Scale = PoseMatrix.to_scale()
Position = PoseMatrix.to_translation()
BoneAnimation.RotationKeys.append(Rotation)
BoneAnimation.RotationKeys.append(Util.CompatibleQuaternion(
Rotation, OldRotation))
BoneAnimation.ScaleKeys.append(Scale)
BoneAnimation.PositionKeys.append(Position)
@ -1379,3 +1381,11 @@ class Util:
return x.name
return sorted(List, key=SortKey)
# Make A compatible with B
@staticmethod
def CompatibleQuaternion(A, B):
if (A.normalized().conjugated() * B.normalized()).angle > pi:
return -A
else:
return A