3D Graphics Programming with QuickDraw 3D 1.5.4
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CSG Equations
QuickDraw 3D provides constants for some common CSG equations. See "Constructive Solid Geometry" for more information on how CSG equations are determined.
typedef enum TQ3CSGEquation {
kQ3CSGEquationAandB = (int) 0x88888888,
kQ3CSGEquationAandnotB = 0x22222222,
kQ3CSGEquationAanBonCad = 0x2F222F22,
kQ3CSGEquationnotAandB = 0x44444444,
kQ3CSGEquationnAaBorCanD = 0x74747474
} TQ3CSGEquation;
Constant descriptions
- kQ3CSGEquationAandB
- A B . The renderer draws the intersection of object A and object B .
- kQ3CSGEquationAandnotB
- A ¬ B . The renderer draws the portion of object A that lies outside of object B .
- kQ3CSGEquationAanBonCad
- ( A ¬ B ) (¬ C D ). The renderer draws the portion of object A that lies outside of object B , and the portion of object D that lies outside of object C .
- kQ3CSGEquationnotAandB
- ¬ A B . The renderer draws the portion of object B that lies outside of object A .
- kQ3CSGEquationnAaBorCanD
- (¬ A B ) ( C ¬ D ). The renderer draws the portion of object B that lies outside of object A , and the portion of object C that lies outside of object D .
© 1997 Apple Computer, Inc.
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