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

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

Data Structures

Bounding Boxes

A bounding box is a rectangular box, aligned with the coordinate axes, that completely encloses an object. A bounding box is defined by the TQ3BoundingBox data type.

typedef struct TQ3BoundingBox {
   TQ3Point3D                 min;
   TQ3Point3D                 max;
   TQ3Boolean                 isEmpty;
} TQ3BoundingBox;

Field Description

min

The lower-left corner of the bounding box.

max

The upper-right corner of the bounding box.

isEmpty

A Boolean value that specifies whether the bounding box is empty (kQ3True) or not (kQ3False). If this field contains the value kQ3True, the other field of this structure are invalid.

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