Function

Summary

Modifies the transform of a port such that the edges of the port correspond to the arguments given.

Signature

set-graphics-port-coordinates port
 &key left
 top
 right

                             bottom

Arguments

port

A graphics port

left

A real number

top

A real number

right

A real number

bottom

A real number

Description

The set-graphics-port-coordinates function modifies the transform of the port is permanently such that the edges of the port correspond to the values of the arguments.

Example

The following code

(set-graphics-port-coordinates port :left -1.0

                                    :top 1.0

                                    :right 1.0

                                    :bottom -1.0)

changes the coordinates of the port so that the point (0 0) is in the exact center of the port and the edges are a unit distance away, with a right-handed coordinate system.

By default, left and top are 1.