Returns the bounding box which bounds the set (Boolean union) of bboxes.
Bounding boxes are represented by a list of two points. The first point represents the minimum x, y, and z coordinates of the bounding box, and the second point represents the maximum point. Thus the bounding box is always aligned with the world coordinate axes.
Rule bbox1 As List = {point(0,0,0), point(10,10,0)}
Rule bbox2 As List = {point(-5,-2,0), point(1,3,0)}
Rule bbox3 As List = {point(5,2,0), point(13,9,0)}Intent >bboxUnion({bbox1, bbox2})
--> {Point_(-5.0, -2.0, 0.0, WorldFrame()), Point_(10.0, 10.0, 0.0, WorldFrame())}
Intent >bboxUnion({bbox1, bbox3})
--> {Point_(0.0, 0.0, 0.0, WorldFrame()), Point_(13.0, 10.0, 0.0, WorldFrame())}
Intent >bboxUnion({bbox2, bbox3})
--> {Point_(-5.0, -2.0, 0.0, WorldFrame()), Point_(13.0, 9.0, 0.0, WorldFrame())}
Intent >bboxUnion({bbox1, bbox2, bbox3})
--> {Point_(-5.0, -2.0, 0.0, WorldFrame()), Point_(13.0, 10.0, 0.0, WorldFrame())}