Inside Macintosh: 3D Graphics Programming With QuickDraw 3D /

Chapter 20 - QuickDraw 3D Mathematical Utilities / QuickDraw 3D Mathematical Utilities Reference

QuickDraw 3D Mathematical Utilities / Managing Bounding Boxes

Q3BoundingBox_UnionRationalPoint4D

You can use the Q3BoundingBox_UnionRationalPoint4D function to find the union of a bounding box and a rational four-dimensional point.

TQ3BoundingBox *Q3BoundingBox_UnionRationalPoint4D (
const TQ3BoundingBox *bBox, 
const TQ3RationalPoint4D *pt4D, 
TQ3BoundingBox *result);

bBox

A pointer to a bounding box.

pt4D

A rational four-dimensional point.

result

On exit, a pointer to the union of the specified bounding box and the specified point.

DESCRIPTION

The Q3BoundingBox_UnionRationalPoint4D function returns, as its function result and in the result parameter, a pointer to the bounding box that is the union of the bounding box specified by the bBox parameter and the rational four-dimensional point specified by the pt4D parameter. The result parameter can point to the memory pointed to by bBox, thereby performing the union operation in place.