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Index › Programming Questions & Help › Syntax Questions › Question about PGraphics \ createGraphics
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Question about PGraphics \ createGraphics (Read 290 times)
warpcat
Question about PGraphics \ createGraphics
Oct 12th, 2008, 1:06am  
Searched the forms, couldn't find the answer to this:

I have a custom object that draws little circles, pretty simple.  I want to draw it to the screen, then to an off-screen buffer for some post-processing.  Then apply the buffer back to the main screen with some filters.

It SEEMS like PGraphics \ createGraphics would be the way to go.  However, it looks like the PGraphics object doesn't have any hooks into my custom class?

<example code snippets>
PGraphics buffer;
buffer = createGraphics(512,512,P3D);
buffer.beginDraw();
buffer.myObject.run();
buffer.endDraw();
</example>

It's not so happy with buffer.myObject.run(), since buffer seems to have no knowledge of my object.  And if I just execute 'myObject.run()' in the middle of the buffer calls, buffer doesn't get updated.

What to do?  How can I get createGraphics to execute my custom object?  Or is there a better method to get this to render to an off-screen buffer?

Many thanks!
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warpcat
Re: Question about PGraphics \ createGraphics
Reply #1 - Oct 12th, 2008, 1:13am  
Heh, a few minutes after I sent this I came up with a solution.  But I'd be interested to hear if there are better\different ways:

I went into my object, and made a 'runBuffer()' method, that simply made all of its calls directly to the buffer object.  And that works.  Does mean a lot of code duplication though.  Anything better out there?
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antiplastik
Re: Question about PGraphics \ createGraphics
Reply #2 - Oct 12th, 2008, 10:19pm  
Does this thread help?

http://processing.org/discourse/yabb_beta/YaBB.cgi?board=Suggestions;action=display;num=1214781848
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