2 GP Reference Entries

unless-empty-rect-bind

Macro

Summary
: Binds the elements of a rectangle to four variables, and if the rectangle has a non-zero area, executes a body of code.
Signature

unless-empty-rect-bind ((x y width height) rectangle) 
                       &body body => result

Arguments

x: A variable
y: A variable
width: A variable
height: A variable
rectangle: A rectangle
body: A body of Lisp code

Values

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

Description

Theunless-empty-rect-bind macro binds x, y, width, and height to the appropriate values from rectangle and if the width and height are both positive, executes the body forms.