On 12 April 2014 01:37, Juraj Kubelka <juraj.kubelka@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 <siguctua@gmail.com> escribi�:

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.kubelka@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.