On 12 April 2014 01:37, Juraj Kubelka <juraj.kube...@gmail.com> wrote:
> Thank you Igor, > > I suspect there is no better solution. But anyway I am surprised, every > simple drawing application manages ellipses. > > Athens is not an application, it is framework. And why you think that every framework supports drawing ellipses as a basic command/primitive..for instance? I know of at least one, which doesn't - try drawing it with OpenGL. ;) > Thank you anyway. > Juraj > > El 11-04-2014, a las 17:35, Igor Stasenko <siguc...@gmail.com> escribió: > > yes, you using stroke for 2nd ellipse, > but stroke width is also subject of scaling, that's why it has different > width, because > of non-uniform scaling (x/y). > instead you can first, draw a filled ellipse (blue) and then draw green > one over it. > > > On 11 April 2014 21:33, Juraj Kubelka <juraj.kube...@gmail.com> wrote: > >> Hi Igor, hi all! >> >> I am not sure how to properly draw ellipse. Right now I draw a path like >> this: >> >> The path is created that way: >> -=-=-=-=- >> computePath >> path := self athensCanvas >> createPath: [ :builder | >> builder >> absolute; >> moveTo: 0 @ 0.5; >> ccwArcTo: 0.5 @ 0.0 angle: 90 degreesToRadians; >> ccwArcTo: 0.0 @ -0.5 angle: 90 degreesToRadians; >> ccwArcTo: -0.5 @ 0.0 angle: 90 degreesToRadians; >> ccwArcTo: 0 @ 0.5 angle: 90 degreesToRadians ] >> -=-=-=-=- >> >> And draw it like this: >> -=-=-=-=- >> drawOn: athensCanvas >> athensCanvas pathTransform >> restoreAfter: [ >> athensCanvas pathTransform >> scaleBy: rectangle extent asFloatPoint >> athensCanvas >> setPaint: color; >> drawShape: self path. >> (athensCanvas setStrokePaint: strokePaint) >> width: (self strokeWidth / self scale) asFloat. >> athensCanvas drawShape: self path ] >> -=-=-=-=- >> >> But with a different shapes, the border does not have same width all >> around the ellipse. See the image: >> >> <Captura de pantalla 2014-04-11 a la(s) 16.29.13.png> >> >> Is there better way to draw it? >> Thank you, >> Jura >> > > > > -- > Best regards, > Igor Stasenko. > > > -- Best regards, Igor Stasenko.
