premultiply-transforms Function

Summary

Premultiplies two transforms.

Package

graphics-ports

Signature

premultiply-transforms transform1 transform2

Arguments

transform1⇩	A transform object.
transform2⇩	A transform object.

Description

The function premultiply-transforms premultiplies the partial 3 x 3 matrix represented by transform1 by the partial 3 x 3 matrix represented by transform2, storing the result in transform1. In the result, the translation, scaling and rotation operations contained in transform2 are effectively performed before those in transform1.

transform1 = transform2 . transform1