2 GP Reference Entries

with-transformed-rect

Macro

Summary
: Transforms the coordinates of a rectangle and binds them to four variables for the duration of the macro's body.
Signature

with-transformed-rect (nx1 ny1 nx2 ny2 port x1 y1 x2 y2)
                      &body body => result

Arguments

nx1: A variable
ny1: A variable
nx2: A variable
ny2: A variable
port: A graphics port
x1: A real number
y1: A real number
x2: A real number
y2: A real number
body: A body of Lisp code

Values

result: The return value of the last form executed in body

Description

During the evaluation of thewith-transformed-rect macro body, the two points (x1, y1) and (x2, y2) are transformed by the port's current transform and the resulting values bound to the variables named by the nx1 ny1 nx2 ny2 args.