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fix JME issue #742 (attachment nodes for ignoreTransform geometries)

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This commit is contained in:
Stephen Gold 2018-03-23 01:42:08 -07:00
parent a463f5515a
commit 06f8a00549
2 changed files with 56 additions and 1 deletions
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10
jme3-core/src/main/java/com/jme3/animation/Bone.java
View File

@ -535,11 +535,19 @@ public final class Bone implements Savable, JmeCloneable {
attachNode.setLocalRotation(modelRot);
attachNode.setLocalScale(modelScale);
} else if (targetGeometry.isIgnoreTransform()) {
/*
* The animated meshes ignore transforms: match the world transform
* of the attachments node to the bone's transform.
*/
Transform combined = new Transform(modelPos, modelRot, modelScale);
attachNode.setWorldTransform(combined);
} else {
Spatial loopSpatial = targetGeometry;
Transform combined = new Transform(modelPos, modelRot, modelScale);
/*
* Climb the scene graph applying local transforms until the
* Climb the scene graph applying local transforms until the
* attachments node's parent is reached.
*/
while (loopSpatial != attachParent && loopSpatial != null) {

47
jme3-core/src/main/java/com/jme3/scene/Spatial.java
View File

@ -495,6 +495,53 @@ public abstract class Spatial implements Savable, Cloneable, Collidable, Cloneab
return worldTransform;
}
/**
* Alter the local transform so that the world transform approximates the
* specified value.
*
* @param world desired world transform (not null, unaffected)
* @throws IllegalArgumentException if the spatial ignores transform OR the
* parent's world transform isn't invertible
*/
public void setWorldTransform(Transform world) {
if (this instanceof Geometry && ((Geometry) this).ignoreTransform) {
throw new RuntimeException("spatial ignores transforms");
}
if (parent == null) {
/*
* special case: for a root spatial, the world transform is
* precisely the local transform
*/
setLocalTransform(world);
return;
}
Transform parentTransform = parent.getWorldTransform();
Vector3f parentScale = parentTransform.getScale();
if (parentScale.x == 0f || parentScale.y == 0f || parentScale.z == 0f) {
throw new RuntimeException("parent scale isn't invertible");
}
Quaternion parentInvRotation = parentTransform.getRotation().inverse();
if (parentInvRotation == null) {
throw new RuntimeException("parent rotation isn't invertible");
}
/*
* Undo the operations of Transform.combineWithParent()
*/
Transform tmpLocal = world.clone();
Vector3f translation = tmpLocal.getTranslation();
Quaternion rotation = tmpLocal.getRotation();
tmpLocal.getScale().divideLocal(parentScale);
parentInvRotation.mult(rotation, rotation);
Vector3f parentTranslation = parentTransform.getTranslation();
translation.subtractLocal(parentTranslation);
parentInvRotation.multLocal(translation);
translation.divideLocal(parentScale);
setLocalTransform(tmpLocal);
}
/**
* <code>rotateUpTo</code> is a utility function that alters the
* local rotation to point the Y axis in the direction given by newUp.