/**
* Updates the bone and object structure with the given time to the given root bone.
*
* @param time The time which has to be between 0 and {@link #length} to work properly.
* @param root The root bone which is not allowed to be null. The whole animation runs relative to
* the root bone.
*/
public void update(int time, Bone root) {
if (!this.prepared)
throw new SpriterException(
"This animation is not ready yet to animate itself. Please call prepare()!");
if (root == null)
throw new SpriterException(
"The root can not be null! Set a root bone to apply this animation relative to the root bone.");
this.currentKey = mainline.getKeyBeforeTime(time);
for (Timeline.Key timelineKey : this.unmappedTweenedKeys) timelineKey.active = false;
for (BoneRef ref : currentKey.boneRefs) this.update(ref, root, time);
for (ObjectRef ref : currentKey.objectRefs) this.update(ref, root, time);
}
/**
* Prepares this animation to set this animation in any time state. This method has to be called
* before {@link #update(int, Bone)}.
*/
public void prepare() {
if (this.prepared) return;
this.tweenedKeys = new Timeline.Key[timelines.length];
this.unmappedTweenedKeys = new Timeline.Key[timelines.length];
for (int i = 0; i < this.tweenedKeys.length; i++) {
this.tweenedKeys[i] = new Timeline.Key(i);
this.unmappedTweenedKeys[i] = new Timeline.Key(i);
this.tweenedKeys[i].setObject(new Object(new Point(0, 0)));
this.unmappedTweenedKeys[i].setObject(new Object(new Point(0, 0)));
}
if (mainline.keys.length > 0) currentKey = mainline.getKey(0);
this.prepared = true;
}
