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

Chapter 9 - Camera Objects / Camera Objects Reference

Camera Objects Routines / Managing View Plane Cameras

Q3ViewPlaneCamera_GetHalfWidth

You can use the Q3ViewPlaneCamera_GetHalfWidth function to get the half-width of the object specifying a view plane camera.

TQ3Status Q3ViewPlaneCamera_GetHalfWidth (
TQ3CameraObject camera, 
float *halfWidthAtViewPlane);

camera

A view plane camera object.

halfWidthAtViewPlane

On exit, the half-width of the cross section of the viewed object.

DESCRIPTION

The Q3ViewPlaneCamera_GetHalfWidth function returns, in the halfWidthAtViewPlane parameter, the half-width of the cross section of the viewed object of the camera specified by the camera parameter.