Re: [Pharo-project] Graphics with Anti-Aliasing

Jan. 23, 2011


      I try to found this some times ago.
So you really help me too :)

2011/1/23 Udo Schneider <udo.schneider@homeaddress.de>
...
WatchMorph was a good starting point. It seems that #line:to:color: does
not use Antialiasing. I.e.
form := Form extent: 640@480 depth: 32.
form fillWhite.
canvas := BalloonCanvas on: form.
canvas aaLevel: 4.
canvas line: 0@0 to: 640@480 color: Color red.
morph := ImageMorph new.
morph image: form.
morph openCenteredInWorld.
"morph abandon."
does not show any antialiasing. Replacing it with
#drawPolygon:color:borderWidth:borderColor does use AntiAliasing:
form := Form extent: 640@480 depth: 32.
form fillWhite.
canvas := BalloonCanvas on: form.
canvas aaLevel: 4.
canvas drawPolygon: { 0@0 . 640@480 } color: Color transparent
borderWidth: 1 borderColor: Color red.
morph := ImageMorph new.
morph image: form.
morph openCenteredInWorld.
"morph abandon."
That's a "solution" I can live with - as unintuitive as it is though ...
Thanks for your help.
Udo
On 23.01.11 21:12, Denis Kudriashov wrote:
...
Its work in another examples.
See WatchMorph. It has halo memu anti alias. And when it activated
eclipses looks really good.
I tryed it in pharo1.1 standart windows VM
2011/1/23 Udo Schneider
<udo.schneider@homeaddress.de
<mailto:udo.schneider@homeaddress.de>>
Hi Richo,
could you tell me which Image/VM/OS you where using?
On my System (Mac OS X 10.6.6) Pharo 1.1 and Squeak 4.1 on Cog VM
   (r2349) and regular VM (4.2.5beta1U) both show no antialiasing
   (image attached)
Is this maybe somehow platform/plugin related?
Best Regards,
Udo
On 23.01.11 20:28, Ricardo Moran wrote:
Hi Udo,
Out of curiosity, I executed your code in Squeak and the
       antialiasing
       works there. Debugging a little, I found a difference in
       BalloonCanvas>>#line:to:width:color:. If you update Pharo's
       implementation with Squeak's one it works in Pharo as well.
       There might be other differences so you might look into that.
I hope this helps.
       Richo
On Sun, Jan 23, 2011 at 4:09 PM, Udo Schneider
       <udo.schneider@homeaddress.de
       <mailto:udo.schneider@homeaddress.de>
       <mailto:udo.schneider@homeaddress.de
       <mailto:udo.schneider@homeaddress.de>>>
       wrote:
All,
I'm using the following code. IMHO the line is jagged ...
       but maybe
           I'm doing something wrong:
form := Form extent: 640@480 depth: 32.
       "form fillWhite."
           canvas := BalloonCanvas on: form.
           canvas aaLevel: 4.
           canvas line: 0@0 to: 640@480 color: Color red.
           morph := ImageMorph new.
           morph image: form.
           morph openCenteredInWorld.
       "morph abandon."
CU.
Udo
On 22.01.11 15:37, Udo Schneider wrote:
All,
does somebody has a pointer to a graphics
       lib/framework/engine
               for Pharo
               which works with Anti-Aliasing.
My first tests with Balloon2D were disappointing (maybe
       I'm doing
               something wrong). But even setting aaLevel does not seem to
               bring any
               result. I.e. the line drawing code falls back to
       superclass code
               which
               simply draws the same jagged lines like always.
Any pointers?
CU,
Udo