2 GP Reference Entries

set-graphics-port-coordinates

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

Theset-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.