author | Stefan Vogel <sv@exept.de> |
Tue, 28 Apr 2020 16:22:44 +0200 | |
changeset 25376 | 88a3329875ba |
parent 21534 | 137e220de78c |
permissions | -rw-r--r-- |
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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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"{ Package: 'stx:libbasic' }" |
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"{ NameSpace: Smalltalk }" |
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Object subclass:#Geometric |
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instanceVariableNames:'' |
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classVariableNames:'Scale InverseScale' |
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poolDictionaries:'' |
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category:'Graphics-Geometry-Objects' |
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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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However, they ``know'' how to display themself as stroked or possibly |
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filled picture on a graphicsContext (although, the GC's current |
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paint and lineStyles are used). |
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Use instances of (subclasses) of DisplayObject or |
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of the GeometricWrapper classes for objects which keep the color |
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and lineStyle information with them. |
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Notice: |
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ST/X does not use Geometric instances for drawing (yet). |
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Except for Rectangle, Geometry and its subclasses exists mainly |
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for ST-80 compatibility and to provide a home when other (PD) |
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geometry classes are to be filed in. |
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[author:] |
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Claus Gittinger |
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[see also:] |
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Rectangle Polygon EllipticalArc Circle Spline Point |
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LineSegment Curve Arrow ArrowedSpline |
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GraphicsContext |
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StrokingWrapper FillingWrapper |
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! |
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examples |
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line segment: |
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[exBegin] |
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|v l| |
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v := (View extent:100@100) openAndWait. |
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l := LineSegment from:10@10 to:90@90. |
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v paint:Color red. |
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l displayStrokedOn:v. |
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l start:90@10 end:10@90. |
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v paint:Color blue. |
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l displayStrokedOn:v. |
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[exEnd] |
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rectangle, unfilled: |
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[exBegin] |
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|v r| |
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v := (View extent:100@100) openAndWait. |
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r := Rectangle origin:10@10 corner:90@90. |
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v paint:Color red. |
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r displayStrokedOn:v. |
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[exEnd] |
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circle; filled and unfilled: |
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[exBegin] |
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|v c| |
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v := (View extent:200@100) openAndWait. |
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c := Circle boundingBox:(10@10 corner:90@90). |
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v paint:Color blue. |
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c displayFilledOn:v. |
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c center:150@50. |
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v paint:Color red. |
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c displayStrokedOn:v. |
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[exEnd] |
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circle & rectangle; both filled: |
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[exBegin] |
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|v c| |
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v := (View extent:100@100) openAndWait. |
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c := Circle center:50@50 radius:40. |
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v paint:Color red. |
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c asRectangle displayFilledOn:v. |
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v paint:Color blue. |
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c displayFilledOn:v. |
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[exEnd] |
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elliptical arcs; filled & unfilled: |
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[exBegin] |
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|v e| |
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v := (View extent:200@100) openAndWait. |
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e := EllipticalArc |
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boundingBox:(10@10 corner:190@90) |
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startAngle:0 |
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endAngle:270. |
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v paint:Color blue. |
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e displayFilledOn:v. |
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v paint:Color red. |
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e displayStrokedOn:v. |
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[exEnd] |
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polygon; filled & unfilled: |
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[exBegin] |
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|v p| |
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v := (View extent:100@100) openAndWait. |
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p := Polygon vertices: |
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(Array with:(10@10) |
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with:(90@90) |
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with:(10@90)). |
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v paint:Color blue. |
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p displayFilledOn:v. |
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v paint:Color red. |
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p displayStrokedOn:v. |
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[exEnd] |
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circles; filled & unfilled: |
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[exBegin] |
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|v c| |
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v := View new openAndWait. |
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c := Circle center:50@50 radius:40. |
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c displayFilledOn:v. |
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50 to:1 by:-1 do:[:r | |
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c radius:r. |
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v paint:(Color grey:(r * 2)). |
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c displayStrokedOn:v. |
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]. |
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1 to:50 do:[:r | |
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c radius:r. |
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v paint:(Color grey:100-(r * 2)). |
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c displayStrokedOn:v. |
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] |
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[exEnd] |
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arcs; filled: |
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[exBegin] |
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|v ell| |
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v := View new openAndWait. |
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ell := EllipticalArc |
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boundingBox:(10@10 corner:90@90) |
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startAngle:0 |
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sweepAngle:0. |
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#(45 90 135 180 225 270 315 360) keysAndValuesDo:[:index :angle | |
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index odd ifTrue:[ |
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v paint:Color white |
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] ifFalse:[ |
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v paint:Color black |
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]. |
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ell sweepAngle:angle. |
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ell displayFilledOn:v. |
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Delay waitForSeconds:0.5. |
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]. |
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211 |
|
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212 |
[exEnd] |
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arcs; filled: |
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214 |
[exBegin] |
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215 |
|v ell| |
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216 |
|
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v := View new openAndWait. |
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218 |
|
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ell := EllipticalArc |
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boundingBox:(10@10 corner:90@90) |
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startAngle:0 |
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sweepAngle:45. |
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223 |
|
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#(45 90 135 180 225 270 315 360) |
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with:#( 0.125 0.25 0.375 0.5 0.625 0.75 0.875 1) |
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do:[:angle :grey | |
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ell startAngle:angle-45. |
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228 |
v paint:(ColorValue red:grey green:0 blue:0). |
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ell displayFilledOn:v. |
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230 |
]. |
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|
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[exEnd] |
1353 | 233 |
spline; filled & unfilled: |
234 |
[exBegin] |
|
235 |
|v p| |
|
236 |
||
237 |
v := (View extent:100@100) openAndWait. |
|
238 |
||
239 |
p := Spline controlPoints: |
|
1354 | 240 |
(Array with:(20@20) |
241 |
with:(80@80) |
|
242 |
with:(20@80)). |
|
1353 | 243 |
|
244 |
v paint:Color blue. |
|
245 |
p displayFilledOn:v. |
|
246 |
||
247 |
v paint:Color red. |
|
248 |
p displayStrokedOn:v. |
|
249 |
[exEnd] |
|
250 |
||
251 |
closed spline; filled & unfilled: |
|
252 |
[exBegin] |
|
253 |
|v p| |
|
254 |
||
255 |
v := (View extent:100@100) openAndWait. |
|
256 |
||
257 |
p := Spline controlPoints: |
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1354 | 258 |
(Array with:(20@20) |
259 |
with:(80@80) |
|
260 |
with:(20@80) |
|
261 |
with:(20@20)). |
|
1353 | 262 |
|
263 |
v paint:Color blue. |
|
264 |
p displayFilledOn:v. |
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265 |
||
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v paint:Color red. |
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267 |
p displayStrokedOn:v. |
|
268 |
[exEnd] |
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" |
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! ! |
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271 |
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!Geometric class methodsFor:'initialization'! |
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273 |
|
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initialize |
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275 |
"setup class constants" |
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276 |
|
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277 |
"/ these are note used in ST/X; |
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278 |
"/ (acc. to a testers note, ST-80 internally uses |
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279 |
"/ integer valued coordinates, scaling coordinates by |
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280 |
"/ the Scale constant. ST/X does not do this. However, |
2382 | 281 |
"/ user supplied subclasses may depend on those values being |
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282 |
"/ present ...) |
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283 |
|
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Scale := 4096. |
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285 |
InverseScale := 1.0 / Scale |
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286 |
|
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287 |
" |
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288 |
Geometric initialize |
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289 |
" |
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290 |
|
2382 | 291 |
"Modified: 12.2.1997 / 14:11:49 / cg" |
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292 |
! ! |
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293 |
|
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294 |
!Geometric class methodsFor:'helper functions'! |
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295 |
|
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296 |
boundingRectangleForPoints:aSequencableCollectionOfPoints |
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297 |
"given a bunch of point, compute the boundingRectangle |
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298 |
(i.e. the smallest rectangle which encloses all of those points)" |
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299 |
|
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300 |
|p minX minY maxX maxY n "{ Class: SmallInteger }" |
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301 |
x y | |
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302 |
|
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303 |
p := aSequencableCollectionOfPoints first. |
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304 |
minX := maxX := p x. |
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305 |
minY := maxY := p y. |
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306 |
|
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307 |
n := aSequencableCollectionOfPoints size. |
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308 |
1 to:n do:[:idx | |
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309 |
p := aSequencableCollectionOfPoints at:idx. |
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310 |
x := p x. |
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311 |
y := p y. |
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312 |
x < minX ifTrue:[ |
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313 |
minX := x |
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314 |
] ifFalse:[ |
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315 |
x > maxX ifTrue:[ |
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316 |
maxX := x |
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317 |
] |
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318 |
]. |
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319 |
y < minY ifTrue:[ |
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320 |
minY := y |
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321 |
] ifFalse:[ |
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322 |
y > maxY ifTrue:[ |
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323 |
maxY := y |
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324 |
] |
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|
325 |
]. |
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|
326 |
]. |
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|
327 |
|
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328 |
^ Rectangle left:minX top:minY right:maxX bottom:maxY |
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329 |
|
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|
330 |
"Modified: 12.2.1997 / 12:10:12 / cg" |
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|
331 |
! ! |
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332 |
|
21395 | 333 |
!Geometric class methodsFor:'queries'! |
334 |
||
335 |
isAbstract |
|
336 |
"Return if this class is an abstract class. |
|
337 |
True is returned here for myself only; false for subclasses. |
|
338 |
Abstract subclasses must redefine this again." |
|
339 |
||
340 |
^ self == Geometric. |
|
341 |
! ! |
|
342 |
||
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343 |
!Geometric methodsFor:'converting'! |
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344 |
|
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345 |
asFiller |
1353 | 346 |
"return a wrapper which displays the receiver in its filled form" |
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347 |
|
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348 |
self canBeFilled ifTrue:[ |
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349 |
^ FillingWrapper on:self |
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350 |
]. |
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351 |
^ self shouldNotImplement |
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352 |
|
6065 | 353 |
" |
354 |
|v r| |
|
355 |
||
356 |
v := View new. |
|
357 |
v extent:200@200. |
|
358 |
v openAndWait. |
|
359 |
r := Rectangle origin:10@10 corner:100@100. |
|
360 |
r asFiller displayOn:v. |
|
361 |
" |
|
362 |
||
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363 |
"Modified: 12.2.1997 / 11:47:22 / cg" |
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364 |
! |
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365 |
|
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366 |
asRectangle |
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367 |
"return the enclosing rectangle; same as #bounds" |
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368 |
|
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369 |
^ self bounds |
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370 |
|
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371 |
"Created: 8.5.1996 / 14:36:35 / cg" |
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372 |
! |
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373 |
|
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374 |
asStroker |
1353 | 375 |
"return a wrapper which displays the receiver as stroked outline" |
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376 |
|
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377 |
^ StrokingWrapper on:self |
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Claus Gittinger <cg@exept.de>
parents:
1314
diff
changeset
|
378 |
|
85eec07b093b
doku, comments, examples & more functionality
Claus Gittinger <cg@exept.de>
parents:
1314
diff
changeset
|
379 |
"Created: 8.5.1996 / 14:38:09 / cg" |
1353 | 380 |
"Modified: 8.5.1996 / 18:23:00 / cg" |
2377 | 381 |
! |
382 |
||
4352 | 383 |
asVisualComponent |
384 |
"return a wrapper on the receiver, which responds to VisualComponent messages." |
|
385 |
||
2377 | 386 |
^ self asStroker |
387 |
||
388 |
"Created: 10.2.1997 / 12:04:27 / cg" |
|
356 | 389 |
! ! |
390 |
||
391 |
!Geometric methodsFor:'displaying'! |
|
392 |
||
7083 | 393 |
ascentOn:aGC |
394 |
"displayOn: does not draw above baseline" |
|
395 |
||
396 |
^ 0 |
|
397 |
! |
|
398 |
||
610 | 399 |
displayFilledOn:aGC |
400 |
"display myself filled on a graphicsContext; the current graphics |
|
401 |
attributes are used. Since we do not know how to do it, nothing is |
|
402 |
drawn here." |
|
403 |
||
1350
85eec07b093b
doku, comments, examples & more functionality
Claus Gittinger <cg@exept.de>
parents:
1314
diff
changeset
|
404 |
^ self subclassResponsibility |
610 | 405 |
|
6065 | 406 |
" |
407 |
|v r| |
|
408 |
||
409 |
v := View new. |
|
410 |
v extent:200@200. |
|
411 |
v openAndWait. |
|
412 |
r := Rectangle origin:10@10 corner:100@100. |
|
413 |
r displayFilledOn:v. |
|
414 |
" |
|
415 |
||
1350
85eec07b093b
doku, comments, examples & more functionality
Claus Gittinger <cg@exept.de>
parents:
1314
diff
changeset
|
416 |
"Modified: 8.5.1996 / 09:07:02 / cg" |
610 | 417 |
! |
418 |
||
6925 | 419 |
displayOn:aGCOrStream |
356 | 420 |
"display myself on a graphicsContext; the current graphics |
421 |
attributes are used. The default here is to display the outline." |
|
422 |
||
6925 | 423 |
"/ what a kludge - Dolphin and Squeak mean: printOn:; |
21534 | 424 |
"/ old ST80 means: draw-yourself on a GC. |
16745 | 425 |
(aGCOrStream isStream) ifTrue:[ |
6925 | 426 |
^ super displayOn:aGCOrStream |
427 |
]. |
|
428 |
^ self displayStrokedOn:aGCOrStream |
|
6065 | 429 |
|
430 |
" |
|
431 |
|v r| |
|
432 |
||
433 |
v := View new. |
|
434 |
v extent:200@200. |
|
435 |
v openAndWait. |
|
436 |
r := Rectangle origin:10@10 corner:100@100. |
|
437 |
r displayOn:v. |
|
438 |
" |
|
21534 | 439 |
|
440 |
"Modified (comment): / 22-02-2017 / 16:48:07 / cg" |
|
356 | 441 |
! |
442 |
||
443 |
displayStrokedOn:aGC |
|
444 |
"display my outline on a graphicsContext; the current graphics |
|
1357 | 445 |
attributes are used. Since we do not know how to do it, nothing is |
356 | 446 |
drawn here." |
447 |
||
1350
85eec07b093b
doku, comments, examples & more functionality
Claus Gittinger <cg@exept.de>
parents:
1314
diff
changeset
|
448 |
^ self subclassResponsibility |
85eec07b093b
doku, comments, examples & more functionality
Claus Gittinger <cg@exept.de>
parents:
1314
diff
changeset
|
449 |
|
1357 | 450 |
"Modified: 8.5.1996 / 21:20:19 / cg" |
1350
85eec07b093b
doku, comments, examples & more functionality
Claus Gittinger <cg@exept.de>
parents:
1314
diff
changeset
|
451 |
! ! |
85eec07b093b
doku, comments, examples & more functionality
Claus Gittinger <cg@exept.de>
parents:
1314
diff
changeset
|
452 |
|
85eec07b093b
doku, comments, examples & more functionality
Claus Gittinger <cg@exept.de>
parents:
1314
diff
changeset
|
453 |
!Geometric methodsFor:'queries'! |
356 | 454 |
|
1350
85eec07b093b
doku, comments, examples & more functionality
Claus Gittinger <cg@exept.de>
parents:
1314
diff
changeset
|
455 |
bounds |
2381
10af98758a49
added dummy Scale & InverseScale classVars.
Claus Gittinger <cg@exept.de>
parents:
2377
diff
changeset
|
456 |
"return the smallest enclosing rectangle. |
10af98758a49
added dummy Scale & InverseScale classVars.
Claus Gittinger <cg@exept.de>
parents:
2377
diff
changeset
|
457 |
This resends computeBounds, to allow caching of bounds in |
10af98758a49
added dummy Scale & InverseScale classVars.
Claus Gittinger <cg@exept.de>
parents:
2377
diff
changeset
|
458 |
case this computation is expensive." |
1350
85eec07b093b
doku, comments, examples & more functionality
Claus Gittinger <cg@exept.de>
parents:
1314
diff
changeset
|
459 |
|
2381
10af98758a49
added dummy Scale & InverseScale classVars.
Claus Gittinger <cg@exept.de>
parents:
2377
diff
changeset
|
460 |
^ self computeBounds |
1350
85eec07b093b
doku, comments, examples & more functionality
Claus Gittinger <cg@exept.de>
parents:
1314
diff
changeset
|
461 |
|
85eec07b093b
doku, comments, examples & more functionality
Claus Gittinger <cg@exept.de>
parents:
1314
diff
changeset
|
462 |
"Created: 8.5.1996 / 13:56:08 / cg" |
2381
10af98758a49
added dummy Scale & InverseScale classVars.
Claus Gittinger <cg@exept.de>
parents:
2377
diff
changeset
|
463 |
"Modified: 12.2.1997 / 11:41:38 / cg" |
1446
fabdc1d2598c
added #canBeFilled for protocol completeness
Claus Gittinger <cg@exept.de>
parents:
1390
diff
changeset
|
464 |
! |
fabdc1d2598c
added #canBeFilled for protocol completeness
Claus Gittinger <cg@exept.de>
parents:
1390
diff
changeset
|
465 |
|
2381
10af98758a49
added dummy Scale & InverseScale classVars.
Claus Gittinger <cg@exept.de>
parents:
2377
diff
changeset
|
466 |
computeBounds |
10af98758a49
added dummy Scale & InverseScale classVars.
Claus Gittinger <cg@exept.de>
parents:
2377
diff
changeset
|
467 |
"return the smallest enclosing rectangle." |
10af98758a49
added dummy Scale & InverseScale classVars.
Claus Gittinger <cg@exept.de>
parents:
2377
diff
changeset
|
468 |
|
10af98758a49
added dummy Scale & InverseScale classVars.
Claus Gittinger <cg@exept.de>
parents:
2377
diff
changeset
|
469 |
^ self subclassResponsibility |
10af98758a49
added dummy Scale & InverseScale classVars.
Claus Gittinger <cg@exept.de>
parents:
2377
diff
changeset
|
470 |
|
10af98758a49
added dummy Scale & InverseScale classVars.
Claus Gittinger <cg@exept.de>
parents:
2377
diff
changeset
|
471 |
"Created: 12.2.1997 / 11:41:58 / cg" |
10af98758a49
added dummy Scale & InverseScale classVars.
Claus Gittinger <cg@exept.de>
parents:
2377
diff
changeset
|
472 |
! |
10af98758a49
added dummy Scale & InverseScale classVars.
Claus Gittinger <cg@exept.de>
parents:
2377
diff
changeset
|
473 |
|
4352 | 474 |
outlineIntersects:aRectangle |
19471 | 475 |
"return true, if the receiver's image intersects |
2376 | 476 |
aRectangle, when drawn as an outline. |
477 |
Here, all we can do is to ask the boundary rectangle; |
|
478 |
subclasses should reimplement better checks." |
|
4352 | 479 |
|
2376 | 480 |
^ self bounds intersects:aRectangle |
481 |
||
482 |
"Modified: 10.2.1997 / 13:40:36 / cg" |
|
483 |
! |
|
484 |
||
4352 | 485 |
regionIntersects:aRectangle |
19471 | 486 |
"return true, if the receiver's image intersects |
2376 | 487 |
aRectangle, when drawn as a filled version. |
488 |
Here, all we can do is to ask the boundary rectangle; |
|
489 |
subclasses should reimplement better checks." |
|
4352 | 490 |
|
2376 | 491 |
^ self bounds intersects:aRectangle |
492 |
||
493 |
"Modified: 10.2.1997 / 13:40:00 / cg" |
|
356 | 494 |
! ! |
495 |
||
4352 | 496 |
!Geometric methodsFor:'testing'! |
497 |
||
11744 | 498 |
canBeFilled |
499 |
"return true, if the receiver can be drawn as a filled geometric. |
|
20801 | 500 |
Return false here, since we don't know." |
11744 | 501 |
|
502 |
^ false |
|
503 |
||
504 |
"Created: 1.6.1996 / 11:28:58 / cg" |
|
505 |
! |
|
506 |
||
4352 | 507 |
isBezier2Segment |
508 |
"return true, if the receiver is a quadratic bezier segment" |
|
509 |
||
510 |
^ false |
|
511 |
! |
|
512 |
||
513 |
isLineSegment |
|
514 |
"return true, if the receiver is a line segment" |
|
515 |
||
516 |
^ false |
|
517 |
! ! |
|
518 |
||
5570 | 519 |
!Geometric methodsFor:'transformations'! |
2377 | 520 |
|
15729 | 521 |
align:offset with:someCoordinate |
522 |
self subclassResponsibility |
|
523 |
! |
|
524 |
||
525 |
alignBottomLeftWith:someCoordinate |
|
526 |
"return a copy of myself where its bottomLeft is aligned with someCoordinate" |
|
527 |
||
528 |
^ self align:(self bounds bottomLeft) with:someCoordinate |
|
529 |
||
530 |
" |
|
531 |
|r1 r2 r3 v| |
|
532 |
||
533 |
r1 := 0@0 corner:10@10. |
|
534 |
r2 := 100@100 corner:200@200. |
|
535 |
r3 := r1 copy alignBottomLeftWith:r2 corner. |
|
536 |
v := (View extent:300@300) openAndWait. |
|
537 |
r2 displayOn:v. |
|
538 |
r3 displayOn:v. |
|
539 |
" |
|
540 |
! |
|
541 |
||
542 |
alignBottomRightWith:someCoordinate |
|
543 |
"return a copy of myself where its bottomRight is aligned with someCoordinate. |
|
544 |
Same as alignCorner" |
|
545 |
||
546 |
^ self align:(self bounds corner) with:someCoordinate |
|
547 |
||
548 |
" |
|
549 |
|r1 r2 r3 v| |
|
550 |
||
551 |
r1 := 0@0 corner:10@10. |
|
552 |
r2 := 100@100 corner:200@200. |
|
553 |
r3 := r1 copy alignBottomRightWith:r2 corner. |
|
554 |
v := (View extent:300@300) openAndWait. |
|
555 |
r2 displayOn:v. |
|
556 |
r3 displayOn:v. |
|
557 |
" |
|
558 |
! |
|
559 |
||
560 |
alignCenterWith:someCoordinate |
|
561 |
"return a copy of myself where its center is aligned with someCoordinate. |
|
562 |
Same as alignOrigin" |
|
563 |
||
564 |
^ self align:(self bounds center) with:someCoordinate |
|
565 |
||
566 |
" |
|
567 |
|r1 r2 r3 v| |
|
568 |
||
569 |
r1 := 0@0 corner:10@10. |
|
570 |
r2 := 100@100 corner:200@200. |
|
571 |
r3 := r1 copy alignCenterWith:r2 corner. |
|
572 |
v := (View extent:300@300) openAndWait. |
|
573 |
r2 displayOn:v. |
|
574 |
r3 displayOn:v. |
|
575 |
" |
|
576 |
! |
|
577 |
||
578 |
alignCornerWith:someCoordinate |
|
579 |
"return a copy of myself where its corner is aligned with someCoordinate" |
|
580 |
||
581 |
^ self align:(self bounds corner) with:someCoordinate |
|
582 |
||
583 |
" |
|
584 |
|r1 r2 r3 v| |
|
585 |
||
586 |
r1 := 0@0 corner:10@10. |
|
587 |
r2 := 100@100 corner:200@200. |
|
588 |
r3 := r1 copy alignCornerWith:r2 corner. |
|
589 |
v := (View extent:300@300) openAndWait. |
|
590 |
r2 displayOn:v. |
|
591 |
r3 displayOn:v. |
|
592 |
" |
|
593 |
! |
|
594 |
||
595 |
alignOriginWith:someCoordinate |
|
596 |
"return a copy of myself where its origin is aligned with someCoordinate" |
|
597 |
||
598 |
^ self align:(self bounds origin) with:someCoordinate |
|
599 |
||
600 |
" |
|
601 |
|r1 r2 r3 v| |
|
602 |
||
603 |
r1 := 0@0 corner:10@10. |
|
604 |
r2 := 100@100 corner:200@200. |
|
605 |
r3 := r1 copy alignOriginWith:r2 corner. |
|
606 |
v := (View extent:300@300) openAndWait. |
|
607 |
r2 displayOn:v. |
|
608 |
r3 displayOn:v. |
|
609 |
" |
|
610 |
! |
|
611 |
||
612 |
alignTopLeftWith:someCoordinate |
|
613 |
"return a copy of myself where its topLeft is aligned with someCoordinate. |
|
614 |
Same as alignOrigin" |
|
615 |
||
616 |
^ self align:(self bounds origin) with:someCoordinate |
|
617 |
||
618 |
" |
|
619 |
|r1 r2 r3 v| |
|
620 |
||
621 |
r1 := 0@0 corner:10@10. |
|
622 |
r2 := 100@100 corner:200@200. |
|
623 |
r3 := r1 copy alignTopLeftWith:r2 corner. |
|
624 |
v := (View extent:300@300) openAndWait. |
|
625 |
r2 displayOn:v. |
|
626 |
r3 displayOn:v. |
|
627 |
" |
|
628 |
! |
|
629 |
||
630 |
alignTopRightWith:someCoordinate |
|
631 |
"return a copy of myself where its topRight is aligned with someCoordinate. |
|
632 |
Same as alignOrigin" |
|
633 |
||
634 |
^ self align:(self bounds topRight) with:someCoordinate |
|
635 |
||
636 |
" |
|
637 |
|r1 r2 r3 v| |
|
638 |
||
639 |
r1 := 0@0 corner:10@10. |
|
640 |
r2 := 100@100 corner:200@200. |
|
641 |
r3 := r1 copy alignTopRightWith:r2 corner. |
|
642 |
v := (View extent:300@300) openAndWait. |
|
643 |
r2 displayOn:v. |
|
644 |
r3 displayOn:v. |
|
645 |
" |
|
646 |
! |
|
647 |
||
4352 | 648 |
scaledBy:scaleAmount |
2377 | 649 |
"return a copy of the receiver, which is scaled by the argument, |
650 |
a point or number" |
|
4352 | 651 |
|
2377 | 652 |
^ self subclassResponsibility |
653 |
||
654 |
"Created: 10.2.1997 / 12:05:45 / cg" |
|
655 |
! |
|
656 |
||
4352 | 657 |
translatedBy:scaleAmount |
2377 | 658 |
"return a copy of the receiver, which is translated by the argument, |
659 |
a point or number" |
|
4352 | 660 |
|
2377 | 661 |
^ self subclassResponsibility |
662 |
||
663 |
"Created: 10.2.1997 / 12:05:56 / cg" |
|
664 |
! ! |
|
665 |
||
637 | 666 |
!Geometric class methodsFor:'documentation'! |
667 |
||
668 |
version |
|
19471 | 669 |
^ '$Header$' |
637 | 670 |
! ! |
6925 | 671 |
|
15729 | 672 |
|
2381
10af98758a49
added dummy Scale & InverseScale classVars.
Claus Gittinger <cg@exept.de>
parents:
2377
diff
changeset
|
673 |
Geometric initialize! |