import processing.video.*;
Capture videoCapture;

PImage textureImage;
PImage heightMap;

void setupTexture() {

  videoCapture = new Capture(this, 256, 256, 14);

  textureImage = createImage(256,256, RGB); 

   ///*
   //textureImage = loadImage("crystaphyll_heightMap.png"); 
   heightMap = loadImage("crystaphyll_heightMap.png"); 
   
   
   for(int i=0; i < textureImage.pixels.length; i++) {
   
   float r = 205+round(random(20)+10);
   float g = 205+round(random(20)+10);
   float b = 245+round(random(20)+10);
   
   textureImage.pixels[i] = color(r, g, b); 
   
   }
   
   // */
}

void captureEvent(Capture myCapture) {
  videoCapture.read();
}


PImage renderTexture() {

 // textureImage = videoCapture;

  imageProcessor();

  textureImage.updatePixels();
  return textureImage;
}

float r;
float g;
float b;

float pr;
float pg;
float pb;

float hr;
float hg;
float hb;

float nr;
float ng;
float nb;

float vr;
float vg;
float vb;

void imageProcessor(){
  for(int i=round(textureImage.pixels.length*.25); i < round(textureImage.pixels.length*.75); i++) {
    
    pr = red(textureImage.pixels[i]);
    pg = green(textureImage.pixels[i]);
    pb = blue(textureImage.pixels[i]);

    hr = red(heightMap.pixels[i]);
    hg = green(heightMap.pixels[i]);
    hb = blue(heightMap.pixels[i]);
    
    float prevvr = vr;
    float prevvg = vg;
    float prevvb = vb;
    
    vr = red(videoCapture.pixels[i]);
    vg = green(videoCapture.pixels[i]);
    vb = blue(videoCapture.pixels[i]);
    
    float diffvr = vr-prevvr;
    float diffvg = vg-prevvg;
    float diffvb = vb-prevvb;

    nr = neighborInfluence(i, "red", .01);
    ng = neighborInfluence(i, "green", .01);
    nb = neighborInfluence(i, "blue", .01);

    r=channelProcessor(hr, pr, nr, vr, 0, 235, 20);
    g=channelProcessor(hg, pg, ng, vg, 0, 255, 10);
    b=channelProcessor(hb, pb, nb, vb, 0, 235, 20);

    textureImage.pixels[i] = color(r, g, b); 
  }
}

float channelProcessor(float hv,float pv, float nv, float vv, float minv, float maxv, float modRange) {
  float v = 0;
  if(random(255)>((255-vv))){

    v = pv+(random(modRange)-(modRange*.5));
    v += nv*sineWave(7777777);
    v += hv*.1;

    v = round(v);
    if(v<minv) v=minv; 
    if (v>maxv) v=maxv;
    
  } 
  else {
    v = pv; 
  }
  return v;
}



float pixt;
float pixl;
float pixr;
float pixb;

float neighborInfluence(int i, String channel, float strength) {
  float p;

  if (channel == "red") {
    pixt = red(textureImage.pixels[i-textureImage.width]);
    pixl = red(textureImage.pixels[i-1]);
    pixr = red(textureImage.pixels[i+1]);
    pixb = red(textureImage.pixels[i+textureImage.width]);
  } 
  else if (channel == "green") {
    pixt = green(textureImage.pixels[i-textureImage.width]);
    pixl = green(textureImage.pixels[i-1]);
    pixr = green(textureImage.pixels[i+1]);
    pixb = green(textureImage.pixels[i+textureImage.width]);
  } 
  else if (channel == "blue") {
    pixt = blue(textureImage.pixels[i-textureImage.width]);
    pixl = blue(textureImage.pixels[i-1]);
    pixr = blue(textureImage.pixels[i+1]);
    pixb = blue(textureImage.pixels[i+textureImage.width]);
  }

  p = (((pixt+pixl+pixr+pixb)*.25*3.921568627451e-03)*strength)-(strength*.5);

  return p;
}