Re: [pygame] multi-width aalines and aacircles
I backported pygame2.sdlgfx.primitives back into Pygame just as a quick and dirty way to try out SDL_gfx. I made it optional, like movieext, so we could decide if we should keep it as is. Though at first glance gfxdraw appears to differ from the draw module, having no line width argument for instance, a closer look shows that draw builds up line width through repeated draws of a single pixel width line. Underneath, draw is just an earlier version of SDL_gfx with some features added over top. I would suggest instead of a separate gfxdraw module, which duplicates much that is in draw, to simply rework draw to use SDL_gfx as its back end. draw would be extended to expose the new functions added by SDL_draw. Including the SDL_gfx source files with Pygame is fine with me. But the RGBA versions of the functions were justed used for convenience. The Color versions can be used as well and would save a C function call. Lenard René Dudfield wrote: hi again, Or for the draw stuff... We could just include these two files: src/SDL_gfx/SDL_gfxPrimitives.c src/SDL_gfx/SDL_gfxPrimitives.h Then use this in Setup GFX = src/SDL_gfx/SDL_gfxPrimitives.c gfxdraw src/gfxdraw.c $(SDL) $(GFX) $(DEBUG) I added those two files in that directory to svn for now. So people should be able to build it out of svn on linux/unix... and download binaries (hopefully a couple of hours) from here: http://thorbrian.com/pygame/builds.php Committed revision 1980. cheers, On Sun, Mar 29, 2009 at 2:11 PM, René Dudfield ren...@gmail.com mailto:ren...@gmail.com wrote: Hi, very cool module :) I uploaded some png's for people to see: http://rene.f0o.com/~rene/stuff/aapolygon.png http://rene.f0o.com/%7Erene/stuff/aapolygon.png http://rene.f0o.com/~rene/stuff/aacircle.png http://rene.f0o.com/%7Erene/stuff/aacircle.png However, with ubuntu SDL_gfx I get this error: import pygame.gfxdraw Traceback (most recent call last): File stdin, line 1, in module ImportError: /usr/lib/python2.5/site-packages/pygame/gfxdraw.so: undefined symbol: arcRGBA I guess arcRGBA isn't in the version I have... which is version 2.0.13 - a pretty a old SDL_gfx (current is 2.0.19pre). So... I'll try and start submitting bug reports to distros for them to update SDL_gfx. However that won't help us for 1-2 years -- by the time they process the bug report, then finally get around to packaging the newer version - then time for people to upgrade their distros... Also, I think we'll probably try and get some newer fixes into SDL_gfx, so for now including it with pygame is probably better. Instead, can we include SDL_gfx parts in with pygame? including the whole directory in src/SDL_gfx/ . I changed Setup to this, which compiled and worked: GFX = src/SDL_gfx/SDL_gfxBlitFunc.c src/SDL_gfx/SDL_gfxPrimitives.c gfxdraw src/gfxdraw.c $(SDL) $(GFX) $(DEBUG) Instead of including it in src/... we could put it in branch/SDL_gfx and put a svn external to src/SDL_gfx (SDL_gfx doesn't appear to use public version control). Or we could just include the needed files needed. I think a branch with svn external to src/SDL_gfx would be best... then it's nicely separated. Then when we release a source tar.gz/.zip we include it with the pygame sources. cheers, On Thu, Mar 26, 2009 at 6:33 AM, Lenard Lindstrom le...@telus.net mailto:le...@telus.net wrote: You can see for yourself: http://www3.telus.net/len_l/pygame/gfx_antialiasing.tar.gz Because of a bug aapolygon_gfx.py will not work with the gfx enabled Windows binaries I have provide. The latest Pygame out of SVN is needed. But you can still look at the images I took from a screen shot. Lenard Lenard Lindstrom wrote: The results actually look good though, if one first draws the outline, then the filled version. Circles not quit so good, but better than with no anti-aliasing. Lenard RB[0] wrote: You could do a filled polygon and then an aa one around it... But I think then you'd be getting a lot slower... On Wed, Mar 25, 2009 at 1:44 PM, Lenard Lindstrom le...@telus.net mailto:le...@telus.net mailto:le...@telus.net mailto:le...@telus.net wrote: The aa polygon is not filled, and the filled polygon does no aa. Lenard René Dudfield wrote: good idea. there's an aa-polygon in sdl gfx On Wed, Mar 25, 2009 at 5:38 PM, Greg Ewing greg.ew...@canterbury.ac.nz mailto:greg.ew...@canterbury.ac.nz
Re: [pygame] multi-width aalines and aacircles
I think if you look at a real SVG aaline... http://upload.wikimedia.org/wikipedia/commons/thumb/8/8f/Simple_polygon.svg/588px-Simple_polygon.svg.png ...then look at the pygame one... http://rene.f0o.com/~rene/stuff/aapolygon.pnghttp://rene.f0o.com/%7Erene/stuff/aapolygon.png ...the latter looks pretty rough. -- - pymike
Re: [pygame] multi-width aalines and aacircles
The pygame line looks like there's something wrong with it. There are very few faded pixels at all. It's essentially not anti-aliased. -Zack On Mar 29, 2009, at 11:12 AM, pymike wrote: I think if you look at a real SVG aaline... http://upload.wikimedia.org/wikipedia/commons/thumb/8/8f/Simple_polygon.svg/588px-Simple_polygon.svg.png ...then look at the pygame one... http://rene.f0o.com/~rene/stuff/aapolygon.png ...the latter looks pretty rough. -- - pymike
Re: [pygame] multi-width aalines and aacircles
hi, it looks like there's one step in the pygame one which misses the aa part. If you zoom in on the image, you can see it fairly well. The svg one has way more transparent pixels - and looks a bit fuzzy, even jaggy in some parts(bottom lines going high left, to low right). You can see the source for the pygame one here: http://www.seul.org/viewcvs/viewcvs.cgi/trunk/src/SDL_gfx/SDL_gfxPrimitives.c?rev=1980root=PyGamesortby=dateview=markup Search for the function called int aalineColorInt( It's *very* well commented. cheers, On Mon, Mar 30, 2009 at 2:12 AM, pymike pymik...@gmail.com wrote: I think if you look at a real SVG aaline... http://upload.wikimedia.org/wikipedia/commons/thumb/8/8f/Simple_polygon.svg/588px-Simple_polygon.svg.png ...then look at the pygame one... http://rene.f0o.com/~rene/stuff/aapolygon.png ...the latter looks pretty rough. -- - pymike
Re: [pygame] multi-width aalines and aacircles
Yeah the svg one is a bit fuzzy, but the pygame one is just really messy looking. The function you pointed to - isn't that for normal 1px width aalines? Is it not possible to extend it to aapolygons? -- - pymike
Re: [pygame] multi-width aalines and aacircles
Hi, very cool module :) I uploaded some png's for people to see: http://rene.f0o.com/~rene/stuff/aapolygon.png http://rene.f0o.com/~rene/stuff/aacircle.png However, with ubuntu SDL_gfx I get this error: import pygame.gfxdraw Traceback (most recent call last): File stdin, line 1, in module ImportError: /usr/lib/python2.5/site-packages/pygame/gfxdraw.so: undefined symbol: arcRGBA I guess arcRGBA isn't in the version I have... which is version 2.0.13 - a pretty a old SDL_gfx (current is 2.0.19pre). So... I'll try and start submitting bug reports to distros for them to update SDL_gfx. However that won't help us for 1-2 years -- by the time they process the bug report, then finally get around to packaging the newer version - then time for people to upgrade their distros... Also, I think we'll probably try and get some newer fixes into SDL_gfx, so for now including it with pygame is probably better. Instead, can we include SDL_gfx parts in with pygame? including the whole directory in src/SDL_gfx/ . I changed Setup to this, which compiled and worked: GFX = src/SDL_gfx/SDL_gfxBlitFunc.c src/SDL_gfx/SDL_gfxPrimitives.c gfxdraw src/gfxdraw.c $(SDL) $(GFX) $(DEBUG) Instead of including it in src/... we could put it in branch/SDL_gfx and put a svn external to src/SDL_gfx (SDL_gfx doesn't appear to use public version control). Or we could just include the needed files needed. I think a branch with svn external to src/SDL_gfx would be best... then it's nicely separated. Then when we release a source tar.gz/.zip we include it with the pygame sources. cheers, On Thu, Mar 26, 2009 at 6:33 AM, Lenard Lindstrom le...@telus.net wrote: You can see for yourself: http://www3.telus.net/len_l/pygame/gfx_antialiasing.tar.gz Because of a bug aapolygon_gfx.py will not work with the gfx enabled Windows binaries I have provide. The latest Pygame out of SVN is needed. But you can still look at the images I took from a screen shot. Lenard Lenard Lindstrom wrote: The results actually look good though, if one first draws the outline, then the filled version. Circles not quit so good, but better than with no anti-aliasing. Lenard RB[0] wrote: You could do a filled polygon and then an aa one around it... But I think then you'd be getting a lot slower... On Wed, Mar 25, 2009 at 1:44 PM, Lenard Lindstrom le...@telus.netmailto: le...@telus.net wrote: The aa polygon is not filled, and the filled polygon does no aa. Lenard René Dudfield wrote: good idea. there's an aa-polygon in sdl gfx On Wed, Mar 25, 2009 at 5:38 PM, Greg Ewing greg.ew...@canterbury.ac.nz mailto:greg.ew...@canterbury.ac.nz wrote: Lenard Lindstrom wrote: Yes, but we still need an aaline algorithm with line width. Find an aa polygon algorithm and then use it to draw line-shaped polygons. -- Lenard Lindstrom le...@telus.net
Re: [pygame] multi-width aalines and aacircles
hi again, Or for the draw stuff... We could just include these two files: src/SDL_gfx/SDL_gfxPrimitives.c src/SDL_gfx/SDL_gfxPrimitives.h Then use this in Setup GFX = src/SDL_gfx/SDL_gfxPrimitives.c gfxdraw src/gfxdraw.c $(SDL) $(GFX) $(DEBUG) I added those two files in that directory to svn for now. So people should be able to build it out of svn on linux/unix... and download binaries (hopefully a couple of hours) from here: http://thorbrian.com/pygame/builds.php Committed revision 1980. cheers, On Sun, Mar 29, 2009 at 2:11 PM, René Dudfield ren...@gmail.com wrote: Hi, very cool module :) I uploaded some png's for people to see: http://rene.f0o.com/~rene/stuff/aapolygon.pnghttp://rene.f0o.com/%7Erene/stuff/aapolygon.png http://rene.f0o.com/~rene/stuff/aacircle.pnghttp://rene.f0o.com/%7Erene/stuff/aacircle.png However, with ubuntu SDL_gfx I get this error: import pygame.gfxdraw Traceback (most recent call last): File stdin, line 1, in module ImportError: /usr/lib/python2.5/site-packages/pygame/gfxdraw.so: undefined symbol: arcRGBA I guess arcRGBA isn't in the version I have... which is version 2.0.13 - a pretty a old SDL_gfx (current is 2.0.19pre). So... I'll try and start submitting bug reports to distros for them to update SDL_gfx. However that won't help us for 1-2 years -- by the time they process the bug report, then finally get around to packaging the newer version - then time for people to upgrade their distros... Also, I think we'll probably try and get some newer fixes into SDL_gfx, so for now including it with pygame is probably better. Instead, can we include SDL_gfx parts in with pygame? including the whole directory in src/SDL_gfx/ . I changed Setup to this, which compiled and worked: GFX = src/SDL_gfx/SDL_gfxBlitFunc.c src/SDL_gfx/SDL_gfxPrimitives.c gfxdraw src/gfxdraw.c $(SDL) $(GFX) $(DEBUG) Instead of including it in src/... we could put it in branch/SDL_gfx and put a svn external to src/SDL_gfx (SDL_gfx doesn't appear to use public version control). Or we could just include the needed files needed. I think a branch with svn external to src/SDL_gfx would be best... then it's nicely separated. Then when we release a source tar.gz/.zip we include it with the pygame sources. cheers, On Thu, Mar 26, 2009 at 6:33 AM, Lenard Lindstrom le...@telus.net wrote: You can see for yourself: http://www3.telus.net/len_l/pygame/gfx_antialiasing.tar.gz Because of a bug aapolygon_gfx.py will not work with the gfx enabled Windows binaries I have provide. The latest Pygame out of SVN is needed. But you can still look at the images I took from a screen shot. Lenard Lenard Lindstrom wrote: The results actually look good though, if one first draws the outline, then the filled version. Circles not quit so good, but better than with no anti-aliasing. Lenard RB[0] wrote: You could do a filled polygon and then an aa one around it... But I think then you'd be getting a lot slower... On Wed, Mar 25, 2009 at 1:44 PM, Lenard Lindstrom le...@telus.netmailto: le...@telus.net wrote: The aa polygon is not filled, and the filled polygon does no aa. Lenard René Dudfield wrote: good idea. there's an aa-polygon in sdl gfx On Wed, Mar 25, 2009 at 5:38 PM, Greg Ewing greg.ew...@canterbury.ac.nz mailto:greg.ew...@canterbury.ac.nz wrote: Lenard Lindstrom wrote: Yes, but we still need an aaline algorithm with line width. Find an aa polygon algorithm and then use it to draw line-shaped polygons. -- Lenard Lindstrom le...@telus.net
Re: [pygame] multi-width aalines and aacircles
Lenard Lindstrom wrote: Yes, but we still need an aaline algorithm with line width. Find an aa polygon algorithm and then use it to draw line-shaped polygons. -- Greg
Re: [pygame] multi-width aalines and aacircles
good idea. there's an aa-polygon in sdl gfx On Wed, Mar 25, 2009 at 5:38 PM, Greg Ewing greg.ew...@canterbury.ac.nz wrote: Lenard Lindstrom wrote: Yes, but we still need an aaline algorithm with line width. Find an aa polygon algorithm and then use it to draw line-shaped polygons. -- Greg
Re: [pygame] multi-width aalines and aacircles
The aa polygon is not filled, and the filled polygon does no aa. Lenard René Dudfield wrote: good idea. there's an aa-polygon in sdl gfx On Wed, Mar 25, 2009 at 5:38 PM, Greg Ewing greg.ew...@canterbury.ac.nz wrote: Lenard Lindstrom wrote: Yes, but we still need an aaline algorithm with line width. Find an aa polygon algorithm and then use it to draw line-shaped polygons. -- Lenard Lindstrom le...@telus.net
Re: [pygame] multi-width aalines and aacircles
You could do a filled polygon and then an aa one around it... But I think then you'd be getting a lot slower... On Wed, Mar 25, 2009 at 1:44 PM, Lenard Lindstrom le...@telus.net wrote: The aa polygon is not filled, and the filled polygon does no aa. Lenard René Dudfield wrote: good idea. there's an aa-polygon in sdl gfx On Wed, Mar 25, 2009 at 5:38 PM, Greg Ewing greg.ew...@canterbury.ac.nz wrote: Lenard Lindstrom wrote: Yes, but we still need an aaline algorithm with line width. Find an aa polygon algorithm and then use it to draw line-shaped polygons. -- Lenard Lindstrom le...@telus.net
Re: [pygame] multi-width aalines and aacircles
On Wed, Mar 25, 2009 at 11:47 AM, RB[0] roeb...@gmail.com wrote: You could do a filled polygon and then an aa one around it... My suggestion exactly. Too bad this doesn't work with circles... But I think then you'd be getting a lot slower...
Re: [pygame] multi-width aalines and aacircles
The results actually look good though, if one first draws the outline, then the filled version. Circles not quit so good, but better than with no anti-aliasing. Lenard RB[0] wrote: You could do a filled polygon and then an aa one around it... But I think then you'd be getting a lot slower... On Wed, Mar 25, 2009 at 1:44 PM, Lenard Lindstrom le...@telus.net mailto:le...@telus.net wrote: The aa polygon is not filled, and the filled polygon does no aa. Lenard René Dudfield wrote: good idea. there's an aa-polygon in sdl gfx On Wed, Mar 25, 2009 at 5:38 PM, Greg Ewing greg.ew...@canterbury.ac.nz mailto:greg.ew...@canterbury.ac.nz wrote: Lenard Lindstrom wrote: Yes, but we still need an aaline algorithm with line width. Find an aa polygon algorithm and then use it to draw line-shaped polygons. -- Lenard Lindstrom le...@telus.net
Re: [pygame] multi-width aalines and aacircles
I've drawn aalines over polygons before, and it doesn't always look right. http://pymike.pynguins.com/downloads/Screenshot-GeoStrike.png Look closely at the edges :) On Wed, Mar 25, 2009 at 2:09 PM, Lenard Lindstrom le...@telus.net wrote: The results actually look good though, if one first draws the outline, then the filled version. Circles not quit so good, but better than with no anti-aliasing. Lenard RB[0] wrote: You could do a filled polygon and then an aa one around it... But I think then you'd be getting a lot slower... On Wed, Mar 25, 2009 at 1:44 PM, Lenard Lindstrom le...@telus.netmailto: le...@telus.net wrote: The aa polygon is not filled, and the filled polygon does no aa. Lenard René Dudfield wrote: good idea. there's an aa-polygon in sdl gfx On Wed, Mar 25, 2009 at 5:38 PM, Greg Ewing greg.ew...@canterbury.ac.nz mailto:greg.ew...@canterbury.ac.nz wrote: Lenard Lindstrom wrote: Yes, but we still need an aaline algorithm with line width. Find an aa polygon algorithm and then use it to draw line-shaped polygons. -- Lenard Lindstrom le...@telus.net -- - pymike
Re: [pygame] multi-width aalines and aacircles
That was what I saw when I first drew the filled polygon first. Reversing the operation cleaned it up some, removing the holes. The circle still has holes, but not so noticeable. But then this is just from two quick test programs with large shapes. Lenard pymike wrote: I've drawn aalines over polygons before, and it doesn't always look right. http://pymike.pynguins.com/downloads/Screenshot-GeoStrike.png Look closely at the edges :) On Wed, Mar 25, 2009 at 2:09 PM, Lenard Lindstrom le...@telus.net mailto:le...@telus.net wrote: The results actually look good though, if one first draws the outline, then the filled version. Circles not quit so good, but better than with no anti-aliasing. Lenard RB[0] wrote: You could do a filled polygon and then an aa one around it... But I think then you'd be getting a lot slower... On Wed, Mar 25, 2009 at 1:44 PM, Lenard Lindstrom le...@telus.net mailto:le...@telus.net mailto:le...@telus.net mailto:le...@telus.net wrote: The aa polygon is not filled, and the filled polygon does no aa. Lenard René Dudfield wrote: good idea. there's an aa-polygon in sdl gfx On Wed, Mar 25, 2009 at 5:38 PM, Greg Ewing greg.ew...@canterbury.ac.nz mailto:greg.ew...@canterbury.ac.nz mailto:greg.ew...@canterbury.ac.nz mailto:greg.ew...@canterbury.ac.nz wrote: Lenard Lindstrom wrote: Yes, but we still need an aaline algorithm with line width. Find an aa polygon algorithm and then use it to draw line-shaped polygons. - -- Lenard Lindstrom le...@telus.net
Re: [pygame] multi-width aalines and aacircles
You might want to try drawing in orthagonally, and then rotating it as a single surface.
Re: [pygame] multi-width aalines and aacircles
Ian Mallett wrote: On Wed, Mar 25, 2009 at 11:47 AM, RB[0] roeb...@gmail.com mailto:roeb...@gmail.com wrote: You could do a filled polygon and then an aa one around it... My suggestion exactly. Too bad this doesn't work with circles... But I think then you'd be getting a lot slower... Well, here's the anti-aliased circle algorithm, with width, I found on the internet. aacircle.py is the program, aadraw.py the draw routines. It is much faster in its native Delphi. Lenard -- Lenard Lindstrom le...@telus.net aacircle.py Description: application/python aadraw.py Description: application/python
Re: [pygame] multi-width aalines and aacircles
Meh, doesn't look like aa to me, just a nice blur. Takes a while to load too :S Pre-rendered aa stuff is more or less useless. On Wed, Mar 25, 2009 at 4:02 PM, Lenard Lindstrom le...@telus.net wrote: Ian Mallett wrote: On Wed, Mar 25, 2009 at 11:47 AM, RB[0] roeb...@gmail.com mailto: roeb...@gmail.com wrote: You could do a filled polygon and then an aa one around it... My suggestion exactly. Too bad this doesn't work with circles... But I think then you'd be getting a lot slower... Well, here's the anti-aliased circle algorithm, with width, I found on the internet. aacircle.py is the program, aadraw.py the draw routines. It is much faster in its native Delphi. Lenard -- Lenard Lindstrom le...@telus.net -- - pymike
Re: [pygame] multi-width aalines and aacircles
Try the default Feather to 1.0, the default. But you are probably right. Lenard pymike wrote: Meh, doesn't look like aa to me, just a nice blur. Takes a while to load too :S Pre-rendered aa stuff is more or less useless. On Wed, Mar 25, 2009 at 4:02 PM, Lenard Lindstrom le...@telus.net mailto:le...@telus.net wrote: Ian Mallett wrote: On Wed, Mar 25, 2009 at 11:47 AM, RB[0] roeb...@gmail.com mailto:roeb...@gmail.com mailto:roeb...@gmail.com mailto:roeb...@gmail.com wrote: You could do a filled polygon and then an aa one around it... My suggestion exactly. Too bad this doesn't work with circles... But I think then you'd be getting a lot slower... Well, here's the anti-aliased circle algorithm, with width, I found on the internet. aacircle.py is the program, aadraw.py the draw routines. It is much faster in its native Delphi. -- Lenard Lindstrom le...@telus.net
Re: [pygame] multi-width aalines and aacircles
We could shamelessly rip off their code. :-). Actually AGG is intended for high-quality rendering. Though the developers claim it is still fast, it may still not be fast enough for game usage. Lenard René Dudfield wrote: c++ On Wed, Mar 25, 2009 at 10:27 PM, niki n...@vintech.bg wrote: René Dudfield wrote: good idea. there's an aa-polygon in sdl gfx Why not just use AGG? http://www.antigrain.com v2.4 is BSD (v2.5 is GPL but dead) It has AA for beziers too. -- Lenard Lindstrom le...@telus.net
Re: [pygame] multi-width aalines and aacircles
You can see for yourself: http://www3.telus.net/len_l/pygame/gfx_antialiasing.tar.gz Because of a bug aapolygon_gfx.py will not work with the gfx enabled Windows binaries I have provide. The latest Pygame out of SVN is needed. But you can still look at the images I took from a screen shot. Lenard Lenard Lindstrom wrote: The results actually look good though, if one first draws the outline, then the filled version. Circles not quit so good, but better than with no anti-aliasing. Lenard RB[0] wrote: You could do a filled polygon and then an aa one around it... But I think then you'd be getting a lot slower... On Wed, Mar 25, 2009 at 1:44 PM, Lenard Lindstrom le...@telus.net mailto:le...@telus.net wrote: The aa polygon is not filled, and the filled polygon does no aa. Lenard René Dudfield wrote: good idea. there's an aa-polygon in sdl gfx On Wed, Mar 25, 2009 at 5:38 PM, Greg Ewing greg.ew...@canterbury.ac.nz mailto:greg.ew...@canterbury.ac.nz wrote: Lenard Lindstrom wrote: Yes, but we still need an aaline algorithm with line width. Find an aa polygon algorithm and then use it to draw line-shaped polygons. -- Lenard Lindstrom le...@telus.net
Re: [pygame] multi-width aalines and aacircles
Hmm. Still doesn't looks pretty rough. For aapolygons, can't you just take SDL_gfx's method for antialiasing lines and apply it to the edges of the polygon, and do the same thing for normal lines with widths? Or will the algorithm only work with 1px wide lines? I'll do some googling on aa algorithms. -- - pymike
RE: [pygame] multi-width aalines and aacircles
-Original Message- From: owner-pygame-us...@seul.org [mailto:owner-pygame-us...@seul.org] On Behalf Of Lenard Lindstrom Sent: Monday, March 23, 2009 6:07 PM To: pygame-users@seul.org Subject: Re: [pygame] multi-width aalines and aacircles None of the SDL_gfx functions has a line width argument that I could see. Lenard -- Lenard Lindstrom le...@telus.net Sure, but at least SDL_gfx gives you the tools you need to get there for AA lines. A filled polygon, redraw the edges with an AA line, use some AA circles to draw caps, and viola! AA donuts would still be a pain, and require an offscreen buffer, which is unfortunate. And, likely you'd ask for variable width AA bezier curves next, which also isn't supported. That one may be because it's hard, though. -- John Krukoff he...@comcast.net
Re: [pygame] multi-width aalines and aacircles
On Tue, Mar 24, 2009 at 08:56:16AM -0600, John Krukoff wrote: -Original Message- From: owner-pygame-us...@seul.org [mailto:owner-pygame-us...@seul.org] On Behalf Of Lenard Lindstrom Sent: Monday, March 23, 2009 6:07 PM To: pygame-users@seul.org Subject: Re: [pygame] multi-width aalines and aacircles None of the SDL_gfx functions has a line width argument that I could see. Sure, but at least SDL_gfx gives you the tools you need to get there for AA lines. A filled polygon, redraw the edges with an AA line, use some AA circles to draw caps, and viola! AA donuts would still be a pain, and require an offscreen buffer, which is unfortunate. And, likely you'd ask for variable width AA bezier curves next, which also isn't supported. That one may be because it's hard, though. How about full Cairo support while we're at it? ;-) Marius Gedminas -- Programs that write programs are the happiest programs in the world. -- Andrew Hume signature.asc Description: Digital signature
Re: [pygame] multi-width aalines and aacircles
I guess for now people could use this: http://www.pygame.org/wiki/CairoPygame?parent=CookBook But would be slow LOL, and would probably want a wrapper to handle all the functions and converting and such... On Tue, Mar 24, 2009 at 10:53 AM, Marius Gedminas mar...@gedmin.as wrote: On Tue, Mar 24, 2009 at 08:56:16AM -0600, John Krukoff wrote: -Original Message- From: owner-pygame-us...@seul.org [mailto:owner-pygame-us...@seul.org] On Behalf Of Lenard Lindstrom Sent: Monday, March 23, 2009 6:07 PM To: pygame-users@seul.org Subject: Re: [pygame] multi-width aalines and aacircles None of the SDL_gfx functions has a line width argument that I could see. Sure, but at least SDL_gfx gives you the tools you need to get there for AA lines. A filled polygon, redraw the edges with an AA line, use some AA circles to draw caps, and viola! AA donuts would still be a pain, and require an offscreen buffer, which is unfortunate. And, likely you'd ask for variable width AA bezier curves next, which also isn't supported. That one may be because it's hard, though. How about full Cairo support while we're at it? ;-) Marius Gedminas -- Programs that write programs are the happiest programs in the world. -- Andrew Hume -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.9 (GNU/Linux) iD8DBQFJyQIRkVdEXeem148RAmtEAJ9H72s8I/IeICsgmY4jtDJdVUFnuwCgkvuP czNhblnhWY/SZTJ/LC1N1Fs= =aG4D -END PGP SIGNATURE-
Re: [pygame] multi-width aalines and aacircles
Marius Gedminas wrote: On Tue, Mar 24, 2009 at 08:56:16AM -0600, John Krukoff wrote: -Original Message- From: owner-pygame-us...@seul.org [mailto:owner-pygame-us...@seul.org] On Behalf Of Lenard Lindstrom Sent: Monday, March 23, 2009 6:07 PM To: pygame-users@seul.org Subject: Re: [pygame] multi-width aalines and aacircles None of the SDL_gfx functions has a line width argument that I could see. Sure, but at least SDL_gfx gives you the tools you need to get there for AA lines. A filled polygon, redraw the edges with an AA line, use some AA circles to draw caps, and viola! AA donuts would still be a pain, and require an offscreen buffer, which is unfortunate. And, likely you'd ask for variable width AA bezier curves next, which also isn't supported. That one may be because it's hard, though. How about full Cairo support while we're at it? ;-) Marius Gedminas We could use Pango for text, wrap the whole thing with a gui layer and call it, oh I don't know, Gtk. -- Lenard Lindstrom le...@telus.net
Re: [pygame] multi-width aalines and aacircles
AA Bezier curves would be easy if they were just added in PADLib, which uses lines() and aalines() to render bezier curves. http://www.pygame.org/project/660/ And donuts look awful in pygame right now anyway :-P So really all that needs to be added is aaline width and aapolygons -- - pymike
Re: [pygame] multi-width aalines and aacircles
pymike wrote: AA Bezier curves would be easy if they were just added in PADLib, which uses lines() and aalines() to render bezier curves. http://www.pygame.org/project/660/ And donuts look awful in pygame right now anyway :-P So really all that needs to be added is aaline width and aapolygons -- - pymike I am currently backporting Pygame Reloaded's SDL_gfx module into Pygame 1.9. It will be optional (tentative) at first. As for anti-aliased thick circles, maybe use Os. :-) -- Lenard Lindstrom le...@telus.net
Re: [pygame] multi-width aalines and aacircles
On Tue, Mar 24, 2009 at 11:25 AM, pymike pymik...@gmail.com wrote: AA Bezier curves would be easy if they were just added in PADLib, which uses lines() and aalines() to render bezier curves. That project is pretty old now, but if people need it, I could update it some. It *does *have AA support, though they are, of course, only 1 pixel thick. Ian
Re: [pygame] multi-width aalines and aacircles
pymike wrote: I am currently backporting Pygame Reloaded's SDL_gfx module into Pygame 1.9 Awesome, but it looks like pygame already has most of what's in the sdl_gfx library (rotozoom, aaline, etc.) :S And if SDL_gfx doesn't have line widths, how did pygame achieve it? Would it be possible to duplicate it for aalines? As for anti-aliased thick circles, maybe use Os. :-) rofl -- - pymike Only the draw functions are exposed. It's possible they are faster than their pygame.draw equivalents since they use MMX. As for an aaline with width, having an algorithm to use would be a start. I do have an anti-aliased circle algorithm I translated to Python. Unfortunately I can't remember where I found it so am hesitant to use it. Lenard -- Lenard Lindstrom le...@telus.net
Re: [pygame] multi-width aalines and aacircles
hi, The best way to help would be to write some unittests for it. and possibly extend, or write an example program. How to compile pygame: http://www.pygame.org/wiki/Compilation tests/ examples/ That will make it way easier for someone to code it - and only requires some python coding. Or for extra points even have a go at C! it's not that hard really. Especially on ubuntu/linux. cheers, On Tue, Mar 24, 2009 at 3:32 AM, pymike pymik...@gmail.com wrote: PyGame desperately needs multi-width aalines and aacircles. Are there any plans to implement these during GSoC or the next PyGame release? It'd really open up possibilities for pretty apps, vector art, and even SVG libraries. -- - pymike Python eggs me on.
Re: [pygame] multi-width aalines and aacircles
Ian Mallett wrote: You could always just draw aalines in a circle... Yes, but we still need an aaline algorithm with line width. -- Lenard Lindstrom le...@telus.net
Re: [pygame] multi-width aalines and aacircles
Erm, sorry, meant having a width for aalines, I know aalines are already there LOL On Mon, Mar 23, 2009 at 11:36 AM, RB[0] roeb...@gmail.com wrote: I agree - I have wanted the aalines for a while now (for my lib)... Just wondering why this hasn't already been done, I saw some discussion on it a while back (like last year or further) about it being supported in SDL already and pygame just didn't make use of the API or something... Is that even correct? Circles sound interesting as well... On Mon, Mar 23, 2009 at 11:32 AM, pymike pymik...@gmail.com wrote: PyGame desperately needs multi-width aalines and aacircles. Are there any plans to implement these during GSoC or the next PyGame release? It'd really open up possibilities for pretty apps, vector art, and even SVG libraries. -- - pymike Python eggs me on.
Re: [pygame] multi-width aalines and aacircles
I agree - I have wanted the aalines for a while now (for my lib)... Just wondering why this hasn't already been done, I saw some discussion on it a while back (like last year or further) about it being supported in SDL already and pygame just didn't make use of the API or something... Is that even correct? Circles sound interesting as well... On Mon, Mar 23, 2009 at 11:32 AM, pymike pymik...@gmail.com wrote: PyGame desperately needs multi-width aalines and aacircles. Are there any plans to implement these during GSoC or the next PyGame release? It'd really open up possibilities for pretty apps, vector art, and even SVG libraries. -- - pymike Python eggs me on.
Re: [pygame] multi-width aalines and aacircles
I'd be very happy to see those too, specially because I've been doing lots of drawing with primitives on SSoF. =D -Thiago On Mon, Mar 23, 2009 at 6:32 PM, pymike pymik...@gmail.com wrote: PyGame desperately needs multi-width aalines and aacircles. Are there any plans to implement these during GSoC or the next PyGame release? It'd really open up possibilities for pretty apps, vector art, and even SVG libraries. -- - pymike Python eggs me on.
Re: [pygame] multi-width aalines and aacircles
One idea was to bind SDL_gfx ... there's a patch for a binding a few months back on this list. On Mon, Mar 23, 2009 at 12:41 PM, Thiago Chaves shundr...@gmail.com wrote: I'd be very happy to see those too, specially because I've been doing lots of drawing with primitives on SSoF. =D -Thiago On Mon, Mar 23, 2009 at 6:32 PM, pymike pymik...@gmail.com wrote: PyGame desperately needs multi-width aalines and aacircles. Are there any plans to implement these during GSoC or the next PyGame release? It'd really open up possibilities for pretty apps, vector art, and even SVG libraries. -- - pymike Python eggs me on.
Re: [pygame] multi-width aalines and aacircles
None of the SDL_gfx functions has a line width argument that I could see. Lenard Forrest Voight wrote: One idea was to bind SDL_gfx ... there's a patch for a binding a few months back on this list. On Mon, Mar 23, 2009 at 12:41 PM, Thiago Chaves shundr...@gmail.com wrote: I'd be very happy to see those too, specially because I've been doing lots of drawing with primitives on SSoF. =D -Thiago On Mon, Mar 23, 2009 at 6:32 PM, pymike pymik...@gmail.com wrote: PyGame desperately needs multi-width aalines and aacircles. Are there any plans to implement these during GSoC or the next PyGame release? It'd really open up possibilities for pretty apps, vector art, and even SVG libraries. -- - pymike Python eggs me on. -- Lenard Lindstrom le...@telus.net
