rectangl Specification Sheet
Portable Object Compiler (c) 1997,98,99. All Rights Reserved.
Rectangle
Inherits from: Object
Class Description
Rectangle instances are pairs of Point objects. It is mostly Squeak and Stepstone ICpak101 compatible.
Method types
Creation
Motion
Comparing
Interrogation
- left
- right
- top
- bottom
- width
- height
- origin
- topLeft
- topRight
- topCenter
- corner
- bottomLeft
- bottomCenter
- bottomRight
- center
- leftCenter
- rightCenter
- extent
- quickMerge:
Arithmetic
Printing
Methods
new
+newReturns a new rectangle with origin and corner at (0,0).
origin:corner:
+origin:pcorner:qReturns a new rectangle with origin and corner set to p and q.
origin:extent:
+origin:pextent:q
origin::corner::
+origin:(int)x1:(int)y1corner:(int)x2:(int)y2
origin::extent::
+origin:(int)x:(int)yextent:(int)w:(int)h
free
-freeFrees the origin and corner of the Point too.
origin:
-origin:p
corner:
-corner:q
origin:corner:
-origin:pcorner:qSets origin and corner to p and q.
extent::
-extent:(int)w:(int)h
extent:
-extent:q
origin::
-origin:(int)x1:(int)y1
corner::
-corner:(int)x1:(int)y1
contains:
- (BOOL)contains:aPointYes if inside, or on a border of, the rectangle.
hash
- (unsigned)hash
isEqual:
- (BOOL)isEqual:aRectangleReturns YES if aRectangle is some kind of rectangle, and if corner and origin are equal.
left
- (int)left
right
- (int)right
top
- (int)top
bottom
- (int)bottom
width
- (int)width
height
- (int)height
origin
-origin
topLeft
-topLeftSame as origin.
topRight
-topRightAnswer the point at the top right corner of the receiver's top horizontal.
topCenter
-topCenterAnswer the point at the center of the receiver's top horizontal.
corner
-corner
bottomLeft
-bottomLeftReturns the point at the left edge of the bottom horizontal line of the receiver(or bottomLeft for short).
bottomCenter
-bottomCenterAnswer the point at the center of the receiver's bottom horizontal.
bottomRight
-bottomRightSame as corner.
center
-centerReturn the point at the center of the receiver.
leftCenter
-leftCenterReturn the point at the center of the receiver's left vertical line.
rightCenter
-rightCenterReturn the point at the center of the receiver's left vertical line.
extent
-extentReturn a new Point, set to the width and height of the rectangle.
quickMerge:
-quickMerge:rectReturn the receiver if it encloses the given rectangle or the merge of the two rectangles if it doesn't. This method is an optimization to reduce extra rectangle creations.
moveBy:
-moveBy:aPoint
translateBy:
-translateBy:pThis method is like moveBy:, but returns a new rectangle instead of modifying the receiver.
align:with:
-align:p1with:p2Answer a rectangle that is translated by p2 - p1.
printOn:
-printOn:(IOD)aFile