Modifies the transform of a port such that the edges of the port correspond to the arguments given.
graphics-ports
set-graphics-port-coordinates port &key left top right bottom
port⇩ |
A graphics port. |
left⇩ |
A real number. |
top⇩ |
A real number. |
right⇩ |
A real number. |
bottom⇩ |
A real number. |
The function set-graphics-port-coordinates
modifies the transform of the graphics port port permanently such that the edges of port correspond to the rectangle (left top right bottom).
The transform is part of the port's graphics state. See graphics-state for details of how it is used.
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.
CAPI User Guide and Reference Manual (Windows version) - 01 Dec 2021 19:34:15