@SuppressWarnings("null")
public void draw(PolygonSpriteBatch batch, Skeleton skeleton) {
boolean premultipliedAlpha = this.premultipliedAlpha;
BlendMode blendMode = null;
float[] vertices = null;
short[] triangles = null;
Array<Slot> drawOrder = skeleton.drawOrder;
for (int i = 0, n = drawOrder.size; i < n; i++) {
Slot slot = drawOrder.get(i);
Attachment attachment = slot.attachment;
Texture texture = null;
if (attachment instanceof RegionAttachment) {
RegionAttachment region = (RegionAttachment) attachment;
vertices = region.updateWorldVertices(slot, premultipliedAlpha);
triangles = quadTriangles;
texture = region.getRegion().getTexture();
} else if (attachment instanceof MeshAttachment) {
MeshAttachment mesh = (MeshAttachment) attachment;
vertices = mesh.updateWorldVertices(slot, premultipliedAlpha);
triangles = mesh.getTriangles();
texture = mesh.getRegion().getTexture();
} else if (attachment instanceof SkeletonAttachment) {
Skeleton attachmentSkeleton = ((SkeletonAttachment) attachment).getSkeleton();
if (attachmentSkeleton == null) continue;
Bone bone = slot.getBone();
Bone rootBone = attachmentSkeleton.getRootBone();
float oldScaleX = rootBone.getScaleX();
float oldScaleY = rootBone.getScaleY();
float oldRotation = rootBone.getRotation();
attachmentSkeleton.setPosition(bone.getWorldX(), bone.getWorldY());
// rootBone.setScaleX(1 + bone.getWorldScaleX() - oldScaleX);
// rootBone.setScaleY(1 + bone.getWorldScaleY() - oldScaleY);
// Set shear.
rootBone.setRotation(oldRotation + bone.getWorldRotationX());
attachmentSkeleton.updateWorldTransform();
draw(batch, attachmentSkeleton);
attachmentSkeleton.setPosition(0, 0);
rootBone.setScaleX(oldScaleX);
rootBone.setScaleY(oldScaleY);
rootBone.setRotation(oldRotation);
}
if (texture != null) {
BlendMode slotBlendMode = slot.data.getBlendMode();
if (slotBlendMode != blendMode) {
blendMode = slotBlendMode;
batch.setBlendFunction(blendMode.getSource(premultipliedAlpha), blendMode.getDest());
}
batch.draw(texture, vertices, 0, vertices.length, triangles, 0, triangles.length);
}
}
}
/**
* Returns the axis aligned bounding box (AABB) of the region, mesh, and skinned mesh attachments
* for the current pose.
*
* @param offset The distance from the skeleton origin to the bottom left corner of the AABB.
* @param size The width and height of the AABB.
*/
public void getBounds(Vector2 offset, Vector2 size) {
Array<Slot> drawOrder = this.drawOrder;
float minX = Integer.MAX_VALUE,
minY = Integer.MAX_VALUE,
maxX = Integer.MIN_VALUE,
maxY = Integer.MIN_VALUE;
for (int i = 0, n = drawOrder.size; i < n; i++) {
Slot slot = drawOrder.get(i);
float[] vertices = null;
Attachment attachment = slot.attachment;
if (attachment instanceof RegionAttachment) {
RegionAttachment region = (RegionAttachment) attachment;
region.updateWorldVertices(slot, false);
vertices = region.getWorldVertices();
} else if (attachment instanceof MeshAttachment) {
MeshAttachment mesh = (MeshAttachment) attachment;
mesh.updateWorldVertices(slot, true);
vertices = mesh.getWorldVertices();
} else if (attachment instanceof SkinnedMeshAttachment) {
SkinnedMeshAttachment mesh = (SkinnedMeshAttachment) attachment;
mesh.updateWorldVertices(slot, true);
vertices = mesh.getWorldVertices();
}
if (vertices != null) {
for (int ii = 0, nn = vertices.length; ii < nn; ii += 5) {
float x = vertices[ii], y = vertices[ii + 1];
minX = Math.min(minX, x);
minY = Math.min(minY, y);
maxX = Math.max(maxX, x);
maxY = Math.max(maxY, y);
}
}
}
offset.set(minX, minY);
size.set(maxX - minX, maxY - minY);
}