411 REFERENCE · Wikibooks
Rebol Programming/within?
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USAGE:
WITHIN? point offset size
DESCRIPTION:
Return TRUE if the point is within the rectangle bounds.
WITHIN? is a function value.
ARGUMENTS
point -- XY position (Type: pair)
offset -- Offset of area (Type: pair)
size -- Size of area (Type: pair)
SOURCE CODE
within?: func [
{Return TRUE if the point is within the rectangle bounds.}
point [pair!] "XY position"
offset [pair!] "Offset of area"
size [pair!] "Size of area"
][
found? all [
point/x >= offset/x
point/y >= offset/y
point/x < (offset/x + size/x)
point/y < (offset/y + size/y)
]
]