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Topic: Example for hi-res offscreen drawing (0068) (Read 1419 times) |
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amoeba
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Example for hi-res offscreen drawing (0068)
« on: Dec 2nd, 2004, 2:43pm » |
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ok, just hacked this up for a workshop. it shows how to draw into a large offscreen buffer and then save it as a file when the user clicks on the screen.
based on hints from ben etc, and works fine in 0068.
Code:int cnt;
BGraphics buf;
BImage offscreenImage;
boolean doSave;
void setup() {
size(400,400);
background(200);
// set up large virtual image
buf=new BGraphics(3000,3000);
buf.ellipseMode(CENTER_DIAMETER);
// buf.smooth();
offscreenImage = new BImage(buf.pixels, buf.width, buf.height, RGB);
doSave=false;
}
void loop() {
float rad=random(10,200);
buf.ellipse(random(buf.width),random(buf.height), rad,rad);
image(offscreenImage, 0, 0);
if(doSave) {
String filename="BIG_";
if(cnt<10) filename=filename+"000";
else if(cnt<100) filename=filename+"00";
else if(cnt<1000) filename=filename+"0";
println("Saving "+filename+cnt+".tga");
buf.save(filename+cnt+".tga");
cnt++;
doSave=false;
}
}
void mousePressed() {
doSave=true;
}
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marius watz // amoeba
http://processing.unlekker.net/
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Hannes
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Re: Example for hi-res offscreen drawing (0068)
« Reply #1 on: Dec 8th, 2004, 4:33pm » |
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if you draw the image rescaled to the Applet dimensions you have got a complete preview of the off-screen image ...
image(offscreenImage, 0, 0, width, height);
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Everything is possible ... just try it!
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amoeba
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Re: Example for hi-res offscreen drawing (0068)
« Reply #2 on: Dec 10th, 2004, 9:54am » |
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yep, I put that in about 2 sec after posting it. laziness abounds.
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marius watz // amoeba
http://processing.unlekker.net/
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