#FEATURE by cg
class: Socket class
added: #newTCPclientToHost:port:domain:domainOrder:withTimeout:
changed: #newTCPclientToHost:port:domain:withTimeout:
"
COPYRIGHT (c) 1995 by Claus Gittinger
All Rights Reserved
This software is furnished under a license and may be used
only in accordance with the terms of that license and with the
inclusion of the above copyright notice. This software may not
be provided or otherwise made available to, or used by, any
other person. No title to or ownership of the software is
hereby transferred.
"
"{ Package: 'stx:libbasic2' }"
"{ NameSpace: Smalltalk }"
Geometric subclass:#EllipticalArc
instanceVariableNames:'boundingBox startAngle sweepAngle'
classVariableNames:''
poolDictionaries:''
category:'Graphics-Geometry-Objects'
!
!EllipticalArc class methodsFor:'documentation'!
copyright
"
COPYRIGHT (c) 1995 by Claus Gittinger
All Rights Reserved
This software is furnished under a license and may be used
only in accordance with the terms of that license and with the
inclusion of the above copyright notice. This software may not
be provided or otherwise made available to, or used by, any
other person. No title to or ownership of the software is
hereby transferred.
"
!
documentation
"
This class implements an ellipse which is aligned to x and y axes
given a boundingBox, a startAngle and a sweepAngle.
Positive angles are taken clockwise, negative angles are counterclockwise.
[author:]
Claus Gittinger
[see also:]
Circle Spline Curve LineSegment Polygon Rectangle Arrow
ArrowedSpline
GraphicsContext
StrokingWrapper FillingWrapper
"
!
examples
"
ellipses; filled & unfilled:
[exBegin]
|v e|
v := (View extent:200@100) openAndWait.
e := EllipticalArc
boundingBox:(10@10 corner:190@90)
startAngle:0
endAngle:360.
v paint:Color blue.
e displayFilledOn:v.
v paint:Color red.
e displayStrokedOn:v.
[exEnd]
elliptical arcs; filled & unfilled:
[exBegin]
|v e|
v := (View extent:200@100) openAndWait.
e := EllipticalArc
boundingBox:(10@10 corner:190@90)
startAngle:0
endAngle:270.
v paint:Color blue.
e displayFilledOn:v.
v paint:Color red.
e displayStrokedOn:v.
[exEnd]
more arcs; filled:
[exBegin]
|v ell|
v := View new openAndWait.
ell := EllipticalArc
boundingBox:(10@10 corner:90@90)
startAngle:0
sweepAngle:0.
#(45 90 135 180 225 270 315 360)
keysAndValuesReverseDo:[:index :angle |
index odd ifTrue:[
v paint:Color white
] ifFalse:[
v paint:Color black
].
ell sweepAngle:angle.
ell displayFilledOn:v.
Delay waitForSeconds:0.1.
].
[exEnd]
more arcs; filled:
[exBegin]
|v ell|
v := View new openAndWait.
ell := EllipticalArc
boundingBox:(10@10 corner:90@90)
startAngle:0
sweepAngle:45.
#(45 90 135 180 225 270 315 360)
with:#( 0.125 0.25 0.375 0.5 0.625 0.75 0.875 1)
do:[:angle :grey |
ell startAngle:angle-45.
v paint:(ColorValue red:grey green:0 blue:0).
ell displayFilledOn:v.
].
[exEnd]
"
! !
!EllipticalArc class methodsFor:'instance creation'!
boundingBox:aRectangle
"Return a new EllipticalArc."
^ self new boundingBox:aRectangle
!
boundingBox:aRectangle startAngle:startAngle endAngle:endAngle
"Return a new EllipticalArc."
^ self boundingBox:aRectangle startAngle:startAngle sweepAngle:(endAngle - startAngle)
!
boundingBox:aRectangle startAngle:startAngle sweepAngle:sweepAngle
"Return a new EllipticalArc."
^ self new boundingBox:aRectangle startAngle:startAngle sweepAngle:sweepAngle
!
center:centerPoint radius:radius
"Return a new Circle."
^ self new center:centerPoint radius:radius
!
center:centerPoint radius:radius startAngle:startAngle endAngle:endAngle
"Return a new (circular) Arc."
^ (self new center:centerPoint radius:radius)
startAngle:startAngle; sweepAngle:(endAngle - startAngle)
"Created: 17.5.1996 / 09:58:36 / cg"
"Modified: 17.5.1996 / 09:59:16 / cg"
!
center:centerPoint radius:radius startAngle:startAngle sweepAngle:sweepAngle
"Return a new (circular) Arc."
^ (self new center:centerPoint radius:radius)
startAngle:startAngle; sweepAngle:sweepAngle
"Created: 17.5.1996 / 09:59:08 / cg"
! !
!EllipticalArc methodsFor:'accessing'!
boundingBox:aRectangle
"setup the arc, given a bounding rectangle"
boundingBox := aRectangle.
startAngle := 0.
sweepAngle := 360
"Modified: 17.5.1996 / 10:05:06 / cg"
!
boundingBox:aRectangle startAngle:start sweepAngle:sweep
"setup the arc, given a bounding rectangle, start and endAngle"
boundingBox := aRectangle.
startAngle := start.
sweepAngle := sweep
"Modified: 17.5.1996 / 10:05:27 / cg"
!
center:centerPoint radius:radius
"setup for a circular arc, given center and radius"
boundingBox := Rectangle
left:(centerPoint x - radius)
top:(centerPoint y - radius)
width:(radius * 2)
height:(radius * 2).
startAngle := 0.
sweepAngle := 360.
"Created: 17.5.1996 / 10:07:35 / cg"
!
endAngle
"return the endAngle."
^ startAngle + sweepAngle
!
startAngle
"return the startAngle."
^ startAngle
!
startAngle:angle
"set the startAngle."
startAngle := angle
!
sweepAngle
"return the sweepAngle."
^ sweepAngle
!
sweepAngle:angle
"set the sweepAngle."
sweepAngle := angle
! !
!EllipticalArc methodsFor:'converting'!
asEllipticalArc
"convert the receiver into an ellipticalArc - that's the receiver itself"
^ self
! !
!EllipticalArc methodsFor:'displaying'!
displayFilledOn:aGC
"draw the receiver as a filled arc in a graphicsContext, aGC"
aGC fillArcX:boundingBox left
y:boundingBox top
width:boundingBox width
height:boundingBox height
from:startAngle
to:(startAngle+sweepAngle)
!
displayStrokedOn:aGC
"draw the receiver as a unfilled arc in a graphicsContext, aGC"
aGC displayArcX:boundingBox left
y:boundingBox top
width:boundingBox width
height:boundingBox height
from:startAngle
angle:sweepAngle
! !
!EllipticalArc methodsFor:'queries'!
center
"return the center"
^ boundingBox center
!
computeBounds
"return the smallest enclosing rectangle"
^ boundingBox
"Created: 12.2.1997 / 11:43:00 / cg"
! !
!EllipticalArc methodsFor:'testing'!
canBeFilled
"return true, if the receiver can be drawn as a filled geometric.
Always true here."
^ true
! !
!EllipticalArc class methodsFor:'documentation'!
version
^ '$Header$'
! !