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Index › Programming Questions & Help › Programs › newbie : direct to file writing
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newbie : direct to file writing ? (Read 1128 times)
timbre
newbie : direct to file writing ?
Jun 22nd, 2006, 12:27pm  
im having code here generating some graphics, is it possible
to write the output directly to an image file after X amount of time or after keypress ? i need to have huge resolution for  a print project, thats why. like 10000x7000 pixels...

i got this from the FAQ, but i have no clue how to add it
in the actual code

void setup() {
 big = (PGraphics) createGraphics(3000, 3000, P3D);

 big.beginFrame();
 big.background(128);
 big.line(20, 1800, 1800, 900);
 // etc..
 big.endFrame();

 // make sure the file is written to the sketch folder
 String path = savePath("big.tif");
 big.save(path);
}


greetz,
timbre
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« Last Edit: Jun 22nd, 2006, 3:36pm by timbre »  
 
stevecooley
Re: newbie : direct to file writing ?
Reply #1 - Jun 22nd, 2006, 7:41pm  
You could probably add a counter to the draw() routine and then look for a certain amount to trigger the file write..


Quote:


int counter;

PGraphics big = new PGraphics(2000, 2000, null);

void setup() {
 big.background(128);
}

void draw()
{
 big.beginFrame();  
 big.line(20, 1800, 1800, 900);
 // etc..
 big.endFrame();

 counter++;
 if(counter >= 100)
 {
   // make sure the file is written to the sketch folder
   String path = savePath("big.tif");
   big.save(path);
   noLoop();  
 }
}



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« Last Edit: Jun 22nd, 2006, 9:06pm by stevecooley »  
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stevecooley
Re: newbie : direct to file writing ?
Reply #2 - Jun 22nd, 2006, 9:07pm  
Well... that code will actually spit out a file, but I don't think it's working exactly right. I'm certain I don't know enough about this to be an expert.  Can someone else please chime in on why my code doesn't work?
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JohnG
Re: newbie : direct to file writing ?
Reply #3 - Jun 22nd, 2006, 9:12pm  
In setup add big.defaults(), and you may need to make it a PGraphics3, to get it to work. Not sure you need the beginFrame/endFrame stuff either.
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stevecooley
Re: newbie : direct to file writing ?
Reply #4 - Jun 22nd, 2006, 9:18pm  
Aha!  This works!  Thanks, JohnG, I've been looking for a similar solution, so thanks for the tip. :)


Quote:


int counter;

PGraphics3 big = new PGraphics3(2000, 2000, null);

void setup() {
 big.background(128);
 big.defaults();
 // big.beginFrame();  
}

void draw()
{

 big.line(counter*10, 1800, 1800, 900);
 // etc..


 counter++;
 if(counter >= 100)
 {
  //  big.endFrame();
   // make sure the file is written to the sketch folder
   String path = savePath("big.jpg");
   big.save(path);  
   noLoop();
   
 }
}


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stevecooley
Re: newbie : direct to file writing ?
Reply #5 - Jun 22nd, 2006, 9:23pm  
Interesting to note that if you introduce

 big.smooth();  

to the setup, you get a .tif file... not a jpg.
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stevecooley
Re: newbie : direct to file writing ?
Reply #6 - Jun 22nd, 2006, 9:28pm  
just a love note, this is the day that processing got kicked up a huge notch for me. Smiley  This is so way cool being able to save gigantic files now.
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timbre
Re: newbie : direct to file writing ?
Reply #7 - Jun 22nd, 2006, 9:44pm  
wonderful !! im going to try tomorrow.
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timbre
Re: newbie : direct to file writing ?
Reply #8 - Jun 23rd, 2006, 8:07pm  
hi, for example how could i insert that counter/file writing code in this source ? if tried for hours but it won't work



//

int dimx = 900;
int dimy = 900;
int num = 0;
int maxnum = 200;

// grid of cracks
int[] cgrid;
Crack[] cracks;

// color parameters
int maxpal = 512;
int numpal = 0;
color[] goodcolor = new color[maxpal];

// sand painters
SandPainter[] sands;

// MAIN METHODS ---------------------------------------------

void setup() {
 size(900,900,P3D);
//  size(dimx,dimy,P3D);
 background(255);
 takecolor("some_image.gif");
 
 cgrid = new int[dimx*dimy];
 cracks = new Crack[maxnum];
 
 begin();  
}

void draw() {
 // crack all cracks
 for (int n=0;n<num;n++) {
   cracks[n].move();
 }
}

void mousePressed() {
 begin();
}
   
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