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any ideas on how to improove it? (Read 1331 times)
ifotinos
any ideas on how to improove it?
Nov 3rd, 2009, 3:04am  
// koubia: r,t,y,f,g,h,q,a : +r,+g,+b,-r,-g,-b,+r+g+b,-r-g-b, kounontas to mouse mesa sto parathiro

int possa = 150;
float x[][] = new float [possa+3][possa+3]; //x  
float y[][] = new float [possa+3][possa+3]; //y
float r[][] = new float [possa+3][possa+3]; //color
float g[][] = new float [possa+3][possa+3]; //color
float b[][] = new float [possa+3][possa+3]; //color
float m[] = new float [possa+3]; //color
int metr = 0;
int i;
int j;
int apostash = 4;
float plus = 50000;
float misiapostash = apostash/2;
int sp = 2; //sinplin

void setup(){
  noStroke();
  rectMode(CENTER);
  noStroke();
  size(possa*apostash,possa*apostash);
  frameRate(30);
  for (int i = 0; i < possa; i++) {
    for (int j = 0; j < possa; j++) {
      x[i][j] = +i*apostash;
      y[i][j] = +j*apostash;
      r[i][j] = 0;
      g[i][j] = 0;
      b[i][j] = 0;
    }
  }
}

void draw(){
background(0);
 for (i = 2; i < possa-2; i++) {
   for (j = 2; j < possa-2; j++) {
     fill(r[i][j],g[i][j],b[i][j],255);
     col();
     float megethos = apostash;//map((r[i][j]+g[i][j]+b[i][j])/3,0,plus,apostash,apostash+2);
     //if (megethos>50){megethos = apostash;}
     if (r[i][j] > 0 || g[i][j]>0 ||b[i][j] > 0){
       rect(x[i][j],y[i][j],megethos,megethos);  
     }
    }  
   }
}
void col(){
 if ((mouseX > x[i][j]-sp-misiapostash) && (mouseX < x[i][j]+misiapostash+sp)  && (mouseY > y[i][j]-sp-misiapostash) && (mouseY < y[i][j]+misiapostash+sp)) {
 
 if (key == 'a') {
   r[i][j] = -plus;
   g[i][j] = -plus;
   b[i][j] = -plus;
 }
 if (key == 'q') {
   r[i][j] = plus;
   g[i][j] = plus;
   b[i][j] = plus;
 }
 
 if (key == 'r') {
     r[i][j] = plus;
 }
 
 if (key == 't') {
     g[i][j] = plus;
 }
 if (key == 'y') {
     b[i][j] = plus;
 }
 
 if (key == 'f') {
     r[i][j] = -plus;
 }
 
 if (key == 'g') {
     g[i][j] = -plus;
 }
 
 if (key == 'h') {
     b[i][j] = -plus;
 }
}

r[i][j] = (r[i][j] + r[i][j+1] +r[i][j-1] +r[i+1][j] +r[i-1][j])/5;
g[i][j] = (g[i][j] + g[i][j+1] +g[i][j-1] +g[i+1][j] +g[i-1][j])/5;
b[i][j] = (b[i][j] + b[i][j+1] +b[i][j-1] +b[i+1][j] +b[i-1][j])/5;

}
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blindfish
Re: any ideas on how to improove it?
Reply #1 - Nov 3rd, 2009, 3:27am  
From size():

The size() function must be the first line in setup().

I'd be a little wary of basing size() on variables too, and would instead base the variables on the width/height of the applet; though that's just a personal preference...

It would also be good to set the default start colour as something visible:  Initially I didn't think it worked because nothing seemed to happen.  I know you would probably add written instructions, but it's good to make things as intuitive as possible, e.g. for the case in which someone doesn't understand the instructions...

Anyway it's a nice effect Smiley
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Where is the what if the what is in why?
 
yconst
Re: any ideas on how to improove it?
Reply #2 - Nov 4th, 2009, 8:17pm  
Nice one.

The way it diffuses reminds me of Diffusion/Reaction algorithms.
Perhaps you are familiar with them, anyway, here's a nice java applet I found:

http://texturegarden.com/java/rd/

You can also check fluid dynamics algorithms, could be a way to add some more dynamism to the result.
Just for readability, I would suggest translating the variables to english.
(I can understand because we speak the same language, but it'd be nice for everyone, I think  Smiley )

Again, nice example.
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Yiannis Chatzikonstantinou
volatile prototypes
 
ifotinos
Re: any ideas on how to improove it?
Reply #3 - Nov 6th, 2009, 5:20pm  
thank u / you are both right, il try to do what u said but for now there is an improoved version:

// buttons(while moving the mouse):
//r for +r
//t for +g
//y for +b
//q for white
//
//f for -r
//g for -g
//h for -b
//a for black
//
//c for freezing screen
//e for defining where to paint next (after at least 1 c)
//
//right click for a tiff snapshot  

int howmany = 120;

float x[][] = new float [howmany+3][howmany+3]; //x  
float y[][] = new float [howmany+3][howmany+3]; //y
float r[][] = new float [howmany+3][howmany+3]; //color
float g[][] = new float [howmany+3][howmany+3]; //color
float b[][] = new float [howmany+3][howmany+3]; //color
float m[] = new float [howmany+3]; //color
float enable[][] = new float [howmany+3][howmany+3]; //works = 1, not = 0;
float transp[][] = new float [howmany+3][howmany+3]; //color

int i;
int j;
int howbig = 4;
float plus = 50000;

float halfhowbig = howbig/2;

int sp = 2; //sinplin
void setup(){
 size(howmany*howbig-howbig*4-2,howmany*howbig-howbig*4-2);  
 noStroke();
  rectMode(CENTER);
  frameRate(30);
  for (int i = 0; i < howmany; i++) {
    for (int j = 0; j < howmany; j++) {
      x[i][j] = +i*howbig;
      y[i][j] = +j*howbig;
      r[i][j] = 0;
      g[i][j] = 0;
      b[i][j] = 0;
      enable[i][j] = 1;
      transp[i][j] = 255;
    }
  }
}

void draw(){
 
 translate(-howbig*2,-howbig*2);
 
//background(0);
 for (i = 2; i < howmany-2; i++) {
   
   r[i][1] = r[i][howmany-3];//r[0][howmany];
   g[i][1] = g[i][howmany-3];
   b[i][1] = b[i][howmany-3];
   
   for (j = 2; j < howmany-2; j++) {
     enableit();
     
     
     fill(r[i][j],g[i][j],b[i][j],50);
     
     col();
     
     float size = howbig;//map((r[i][j]+g[i][j]+b[i][j])/3,0,plus,howbig,howbig+2);
         //if (r[i][j] > 0 || g[i][j]>0 ||b[i][j] > 0 ){
           if (enable[i][j] > 0){
             rect(x[i][j],y[i][j],size,size);  
     
     }
   }  
   
 }
 
 saveimage();
 changemind();
}

void changemind(){
if (key == 'c') {
  for (i = 2; i < howmany-2; i++) {
    for (j = 2; j < howmany-2; j++) {

      enable[i][j] = 0;
     
    }
  }

}  
}

void enableit(){

 if (key == 'e') {
   
  if (dist(mouseX,mouseY,x[i][j],y[i][j]) < 20){

    enable[i][j] = 100;
   
  }

}
}
     
void saveimage(){
 if (mousePressed && (mouseButton == RIGHT)) {
   saveFrame("image-####.tif");
 }
}

void col(){

if ((mouseX > x[i][j]-sp-halfhowbig) && (mouseX < x[i][j]+halfhowbig+sp)  && (mouseY > y[i][j]-sp-halfhowbig) && (mouseY < y[i][j]+halfhowbig+sp)) {

 if (key == 'a') {
   r[i][j] = -plus;
   g[i][j] = -plus;
   b[i][j] = -plus;
 }
 if (key == 'q') {
   r[i][j] = plus;
   g[i][j] = plus;
   b[i][j] = plus;
 }
 
 if (key == 'r') {
     r[i][j] = plus;
 }
 
 if (key == 't') {
     g[i][j] = plus;
 }
 if (key == 'y') {
     b[i][j] = plus;
 }
 
 if (key == 'f') {
     r[i][j] = -plus;
 }
 
 if (key == 'g') {
     g[i][j] = -plus;
 }
 
 if (key == 'h') {
     b[i][j] = -plus;
 }
}

r[i][j] = (r[i][j] + r[i][j+1] +r[i][j-1]*1.3 +r[i+1][j] +r[i-1][j])/5.3;
g[i][j] = (g[i][j] + g[i][j+1] +g[i][j-1]*1.3 +g[i+1][j] +g[i-1][j])/5.3;
b[i][j] = (b[i][j] + b[i][j+1] +b[i][j-1]*1.3 +b[i+1][j] +b[i-1][j])/5.3;

}
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ifotinos
Re: any ideas on how to improove it?
Reply #4 - Nov 7th, 2009, 11:59am  
is there any way to make it faster? if i increase the rects (int howmany) it can get very slow
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ifotinos
Re: any ideas on how to improove it?
Reply #5 - Nov 14th, 2009, 10:16am  
Cheesyand a new one here:
http://www.openprocessing.org/visuals/?visualID=5994 Grin Roll Eyes Cool
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