Q3Matrix3x3_SetRotateAboutPoint
You can use the Q3Matrix3x3_SetRotateAboutPoint function to configure a 3-by-3 rotation transformation matrix.
TQ3Matrix3x3 *Q3Matrix3x3_SetRotateAboutPoint (
TQ3Matrix3x3 *matrix3x3,
const TQ3Point2D *origin,
float angle);
matrix3x3
- A 3-by-3 matrix.
origin
- The desired origin of rotation.
angle
- The desired angle of rotation, in radians.
DESCRIPTION
The Q3Matrix3x3_SetRotateAboutPoint function returns, as its function result and in the matrix3x3 parameter, a rotation matrix that rotates an object by the angle angle around the point origin.
