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

Chapter 9 - Camera Objects / Camera Objects Reference

Camera Objects Routines / Managing View Plane Cameras

Q3ViewPlaneCamera_GetCenterX

You can use the Q3ViewPlaneCamera_GetCenterX function to get the horizontal center of the viewed object.

TQ3Status Q3ViewPlaneCamera_GetCenterX (
TQ3CameraObject camera, 
float *centerXOnViewPlane);

camera

A view plane camera object.

centerXOnViewPlane

On exit, the x coordinate of the center of the viewed object.

DESCRIPTION

The Q3ViewPlaneCamera_GetCenterX function returns, in the centerXOnViewPlane parameter, the x coordinate of the center of the viewed object of the camera specified by the camera parameter.