Rectangle supports an extensive accessing protocol for getting and setting points on the boundary of a rectangle. Most of the other messages are provided to facilitate graphics calculations.
While CLDT Rectangles are similar to those defined in Objectworks\Smalltalk, there are many differences from the Smalltalk/V implementation. This is likely because CLDT and
Objectworks\Smalltalk are both based on the Blue Book.
bottom,
bottom:,
bottomCenter,
bottomLeft,
bottomLeft:,
bottomRight,
bottomRight:,
center,
corner,
corner:,
extent,
extent:,
height,
height:,
left,
left:,
leftCenter,
origin,
origin:,
origin:corner:,
origin:extent:,
right,
right:,
rightCenter,
top,
top:,
topCenter,
topLeft,
topLeft:,
topRight,
topRight:,
width,
width:
Objectworks\Smalltalk omits the accessors bottomLeft: and
topRight:. We include them because all the other corners had a set message, and
topRight: is specified in the Red Book. Smalltalk/V reverses the names of the corner accessors, that is
bottomLeft becomes
leftBottom,
bottomRight becomes
rightBottom, and so forth. Smalltalk/V does not support the accessors (or functional equivalents)
bottom:,
bottomLeft:,
bottomCenter,
left:,
leftCenter,
origin:,
right:,
rightCenter,
top:,
topCenter, or
topRight:.
amountToTranslateWithin:,
area,
areasOutside:,
contains:,
containsPoint:,
expandBy:,
insetBy:,
insetOriginBy:cornerBy:,
intersect:,
intersects:,
merge:,
moveBy:,
moveTo:,
scaleBy:,
translateBy:
Objectworks\Smalltalk calls the scaleBy: and
translateBy: messages
scaledBy: and
translatedBy:. We have used the names specified by the Blue Book and Red Book. Smalltalk/V does not support the messages
amountToTranslateWithin:,
area,
areasOutside:,
contains:, and
insetOriginBy:cornerBy:, which are all in the Blue Book.
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