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"
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COPYRIGHT (c) 1995 by Claus Gittinger
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All Rights Reserved
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This software is furnished under a license and may be used
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only in accordance with the terms of that license and with the
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inclusion of the above copyright notice. This software may not
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be provided or otherwise made available to, or used by, any
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other person. No title to or ownership of the software is
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hereby transferred.
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"
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Object subclass:#Geometric
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instanceVariableNames:''
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classVariableNames:''
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poolDictionaries:''
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category:'Graphics-Geometry'
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356
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!
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!Geometric class methodsFor:'documentation'!
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copyright
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"
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COPYRIGHT (c) 1995 by Claus Gittinger
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All Rights Reserved
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This software is furnished under a license and may be used
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only in accordance with the terms of that license and with the
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inclusion of the above copyright notice. This software may not
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be provided or otherwise made available to, or used by, any
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other person. No title to or ownership of the software is
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hereby transferred.
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"
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!
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documentation
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"
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Abstract superclass for geometric figures.
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Concrete classes are (currently) Rectangle, Polygon and the classes
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found in goodies/shape.
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These are not graphical objects, but pure mathematical ones.
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I.e. instances do not carry graphics attributes such as color, lineWidth etc.
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Use instances of (subclasses) of DisplayObject or (the soon to be
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implemented GraphicsAttributesWrapper.
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Notice:
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ST/X does not use Geometric instances for drawing (yet).
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This class exists mainly to provide a superclass when ST-80
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geometry classes are to be filed in.
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1290
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[author:]
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Claus Gittinger
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[see also:]
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Rectangle Polygon Point
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"
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! !
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!Geometric methodsFor:'displaying'!
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displayFilledOn:aGC
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"display myself filled on a graphicsContext; the current graphics
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attributes are used. Since we do not know how to do it, nothing is
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drawn here."
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"/ could be:
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"/ ^ self subclassResponsibility
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^ self
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!
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displayOn:aGC
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"display myself on a graphicsContext; the current graphics
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attributes are used. The default here is to display the outline."
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^ self displayStrokedOn:aGC
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!
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displayStrokedOn:aGC
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"display my outline on a graphicsContext; the current graphics
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attributes are usedSince we do not know how to do it, nothing is
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drawn here."
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"/ could be:
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"/ ^ self subclassResponsibility
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^ self
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! !
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!Geometric class methodsFor:'documentation'!
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version
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^ '$Header: /cvs/stx/stx/libbasic/Geometric.st,v 1.10 1996-04-27 17:50:53 cg Exp $'
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! !
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