public Box3 setFromObject(Object3D object) {
// Computes the world-axis-aligned bounding box of an object (including its children),
// accounting for both the object's, and childrens', world transforms
object.updateMatrixWorld(true);
this.makeEmpty();
object.traverse(
new Object3D.Traverse() {
@Override
public void callback(Object3D node) {
AbstractGeometry geometry = ((GeometryObject) node).getGeometry();
Vector3 v1 = new Vector3();
if (geometry != null) {
if (geometry instanceof Geometry) {
List<Vector3> vertices = ((Geometry) geometry).getVertices();
for (int i = 0, il = vertices.size(); i < il; i++) {
v1.copy(vertices.get(i));
v1.apply(node.getMatrixWorld());
expandByPoint(v1);
}
} else if (geometry instanceof BufferGeometry
&& ((BufferGeometry) geometry).getAttribute("position") != null) {
Float32Array positions =
(Float32Array) ((BufferGeometry) geometry).getAttribute("position").getArray();
for (int i = 0, il = positions.getLength(); i < il; i += 3) {
v1.set(positions.get(i), positions.get(i + 1), positions.get(i + 2));
v1.apply(node.getMatrixWorld());
expandByPoint(v1);
}
}
}
}
});
return this;
}
