//Modified for gabecolors for his Alchemeyez festival
//Colour box
//Original code by Owaun Scantlebury
//Code updated by Owaun Scantlebury
  //798 x 598
  
  int hf=255,wf=255,iff; 
float df=0,ef=0,rf=.01,zf,nf; 
int X,Y; 
PImage water; 
PGraphics water2; 
  PImage bbg;
  PImage _span;
void setup(){ 
 size(798,568,P3D);  
bbg = new PImage(wf,hf);
 water = new PImage (wf,hf); 
 water2 = createGraphics (wf,hf,P3D); 
 _span = createImage(wf,hf,ARGB);
 water.loadPixels(); 
 loadPixels(); 
} 
void draw(){ 
  makebg(true,false);
if (mousePressed){ 
background(bbg);
}
else
{
background(0); 
}

df-=(mouseY-hf/2f)/hf/2f;//137 
ef+=(mouseX-wf/2f)/wf/2f;//120 
water2.loadPixels(); 
water2.beginDraw(); 
for(iff=0;iff<wf*hf;iff++){ 
zf=iff/wf; // use  '/' for horizontal or '%' for vertical  
X=int(iff%wf/zf*hf); 
Y=int(hf/2+noise(iff%wf*rf+ef,iff*rf/wf+df)*99/zf*hf); 
 
color c=Y+(get(X,Y)>>8&iff); 
 
    if (!mousePressed){ 
     
	//image(bbg,0,0);
	 //water.pixels[iff]=color(c-mouseY,c-mouseX,c*iff)+bbg.pixels[iff];  
	// water.pixels[iff]=color(c-mouseY,c-mouseX,c*iff)+bbg.get(X,Y);  
	 water.pixels[iff]=blendColor(color(c-mouseY,c-mouseX,c*iff),bbg.pixels[iff],SUBTRACT);  
	 
   }  
 
   if (mousePressed){ 
     
	set(X,Y,color(c-mouseY,c-mouseX,c*iff)); 
   } 
} 
 
water2.endDraw(); 
water2.updatePixels(); 
water.pixels = water2.pixels; 
water.updatePixels(); 
if (!mousePressed){ 
  // image(water,0,0); 
    _span = createImage(wf,hf,ARGB);
    arraycopy(water.pixels,_span.pixels);
    _span.resize(width,height);
    image(_span,0,0);
   
   
} 
 
} 
 
 
void keyPressed(){ 
   if (key =='h'){ 
   colorMode(HSB,350);   
   } 
    
   
    
  if (key == 'r'){ 
   colorMode(RGB,350);  
  } 
} 

int cpass=0;
void makebg(Boolean animate, Boolean invert){
 
  water.loadPixels();
  color colx = 0;
for(int y=0;y<hf;y++){
    for(int x=0;x<wf;x++){
	  int pos=y*wf+x;
	  color col = water.pixels[pos] ;//
	   colx = color(hf-y,x,y-x); 
	  if (animate){
	   //colx = color(height-y,X,cpass+y); 
	  // colx = color(height-y,x,cpass-X); 
	   colx = color(mouseY-y,x,cpass+y); 
	  }

	  
	  float rr= red(colx);
	  float bb= blue(colx);
	  float gg= green(colx);
	  
	    rr = colx >> 16 & 0xff;
	  gg = colx >> 8 & 0xff;
	  bb = colx  & 0xff;
//	  for(int i=0;i<4;i++){
//	    dis =dist(p[i].xpos,p[i].ypos,x,y)/2;
//	    rr += cc[0]/dis-gain;
//	    gg += cc[1]/dis-gain;
//	    bb += cc[2]/dis-gain;
//	  }
  if (!invert)    {  bbg.pixels[pos]=color(rr,gg,bb);}
    if (invert)   {   bbg.pixels[pos]=-color(rr,gg,bb);}
    }
    bbg.updatePixels();
//    if (!online){
    arraycopy(bbg.pixels,water.pixels); 
//    }
  }
  if (animate){
    cpass++; 
  }
if (cpass>4000){ 
 cpass=0;  
} 

}