Macro

Summary

Combines a given transform with the transform of a port for the duration of the macro.

Signature

with-graphics-transform (port
 transform
) &body body

                        => result

Arguments

port

A graphics port

transform

A transform

body

A body of Lisp code

Values

result

The return value of the last form executed in body

Description

The with-graphics-transform macro combines the transform associated with the graphics port port with transform during the body of the macro. The port is given a new transform obtained by pre-multiplying its current transform with transform . This has the effect of preceding any translation, scaling and rotation operations specified in the body of the macro by those operations embodied in transform .