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

Chapter 7 - Transform Objects / Transform Objects Reference

Transform Objects Routines / Creating and Manipulating Rotate-About-Point Transforms

Q3RotateAboutPointTransform_GetAngle

You can use the Q3RotateAboutPointTransform_GetAngle function to get the angle of a rotate-about-point transform.

TQ3Status Q3RotateAboutPointTransform_GetAngle (
TQ3TransformObject transform, 
float *radians);

transform

A rotate-about-point transform.

radians

On exit, the angle, in radians, of the specified rotate-about-point transform.

DESCRIPTION

The Q3RotateAboutPointTransform_GetAngle function returns, in the radians parameter, the current angle of rotation (in radians) of the rotate-about-point transform specified by the transform parameter.