Rectangles - Factor Documentation (original) (raw)
Rectangles
Factor handbook » UI framework » Building user interfaces » Gadget geometry
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The math.rectangles vocabulary defines a rectangle data type and operations on them.
rect
Rectangles can be taken apart:
rect-bounds ( rect -- loc dim )
rect-extent ( rect -- loc ext )
New rectangles can be created:
( loc dim -- rect ) ( loc ext -- rect )
Set-theoretic operations on rectangles:
rect-intersect ( rect1 rect2 -- newrect )
rect-union ( rect1 rect2 -- newrect )
contains-rect? ( rect1 rect2 -- ? ) contains-point? ( point rect -- ? )