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

Chapter 20 - QuickDraw 3D Mathematical Utilities / QuickDraw 3D Mathematical Utilities Reference

QuickDraw 3D Mathematical Utilities / Transforming Points and Vectors

Q3Vector3D_Transform

You can use the Q3Vector3D_Transform function to apply a transform to a three-dimensional vector.

TQ3Vector3D *Q3Vector3D_Transform (
const TQ3Vector3D *vector3D, 
const TQ3Matrix4x4 *matrix4x4, 
TQ3Vector3D *result);

vector3D

A three-dimensional vector.

matrix4x4

A 4-by-4 matrix.

result

On exit, the vector that is the result of multiplying vector3D by matrix4x4.

DESCRIPTION

The Q3Vector3D_Transform function returns, as its function result and in the result parameter, the vector that is the result of multiplying the vector vector3D by the matrix transform matrix4x4. Note that on entry the result parameter can be the same as the vector3D parameter.