My Adventures as Grandpa-George

forgethowtotalk:

int[] value, opacity;
int threshold;

  size(720,720);
  value = new int[width];
  opacity = new int[height];
  threshold = 153;

  background(255);
  translate(width/2,height/2);
  for (int i=1; i<width; i++){
    for (int j=1; j<height; j++){
      pushMatrix();
        value[i] = int(map(i,1,width,0,255));
        opacity[j] = int(map(j,1,height,0,255));
        if (opacity[j] < threshold){
          stroke(value[int(abs(cos(i)*j))],opacity[int(abs(cos(j)*i))]);
        } else {
          stroke(value[j],opacity[i]);
        }
        translate(cos(i)*i/3,cos(j)*j/3);
        point(0,0);
      popMatrix();
    }
  }

(via wowgreat)

forgethowtotalk:

//blueLeaves_130611a
float rColor,gColor,bColor;
int threshold, pDirection, pModifier;

void setup(){
  size(1280,720);
  frameRate(12);
  background(255);
  translate(width/2,height/2);
 
  for (int i=1; i<width; i++){
    for (int j=1; j<height; j++){
      
      rColor = map(i,0,width,0,200);
      gColor = map(i*j,0,width*height,135,255);
      bColor = map(j,0,height,135,255);
     
      pushMatrix();
        rotate(radians(i/j));
        translate(sin(i)*width/4,sin(j)*height/4);
        stroke(rColor,gColor,bColor);
        point(0,0);
      popMatrix();
    }
  }
}

void draw(){
  loadPixels();
    for (int k=width+1; k<width*height-width-1; k = k+1){
        pDirection = int(random(8));
     
        switch(pDirection) {
          //UP & LEFT
          case 0:
            pModifier = (width*-1)-1;
            break;
          //UP
          case 1:
            pModifier = width*-1;
            break;
          //UP & RIGHT
          case 2:
            pModifier = (width*-1)+1;
            break;
          //RIGHT
          case 3:
            pModifier = 1;
            break;
          //DOWN & RIGHT
          case 4:
            pModifier = width+1;
            break;
          //DOWN
          case 5:
            pModifier = width;
            break;
          //DOWN & LEFT
          case 6:
            pModifier = width-1;
            break;
          //LEFT
          case 7:
            pModifier = -1;
            break;
        }
    
      if (threshold < 255) {
        if (brightness(pixels[k]) < threshold) {
          pixels[k] = pixels[k-width];
        } else {
          pixels[k] = pixels[k+pModifier];
        }
        threshold = threshold+1;
      } else {
        threshold = 0;
      }
    }
  updatePixels();
}

forgethowtotalk:

//brownParticles_130612a
float rColor,gColor,bColor;
int threshold, pDirection, pModifier;

void setup(){
  size(720,720);
  frameRate(12);
  background(255);
  translate(width/2,height/2);
 
  for (int i=1; i<width; i++){
    for (int j=1; j<height; j++){
      
      rColor = map(i,0,width,0,255);
      gColor = map(i+j,0,width+height,0,255);
      bColor = map(j,0,height,0,255);
     
      pushMatrix();
        rotate(radians(i%j));
        translate(sin(i)*width/3.5,cos(j)*height/3.5);
        stroke(rColor,gColor,bColor);
        point(0,0);
      popMatrix();
    }
  }
}

void draw(){
  loadPixels();
    for (int k=width+1; k<width*height-width-1; k = k+1){
        
      if (pDirection < 4) {
        switch(pDirection) {
          //UP & LEFT
          case 0:
            pModifier = (width*-1)-1;
            break;
          //UP & RIGHT
          case 1:
            pModifier = (width*-1)+1;
            break;
          //DOWN & RIGHT
          case 2:
            pModifier = width+1;
            break;
          //DOWN & LEFT
          case 3:
            pModifier = width-1;
            break;
        }
        pDirection = pDirection+1;
      } else {
        pDirection = 0;
      }
    
      if (threshold < 255) {
          pixels[k] = pixels[k+pModifier];
          pixels[k+pModifier] = pixels[k+1];
        threshold = threshold+1;
      } else {
        threshold = 0;
      }
    }
  updatePixels();
}

forgethowtotalk:

//gridCrusher2
int[][] index, value, opacity;
int threshold;
 
void setup(){
  size(720,720);
  threshold = 135;
  index = new int[width][height];
  value = new int[width][height];
  opacity = new int[width][height];
  for (int i=0; i<width; i++){
    for (int j=0; j<height; j++){
      index[i][j] = (width*i)+j;
      value[i][j] = int(map(cos(index[i][j]),abs(sin(i))*-1,abs(cos(j)),0,255));
      opacity[i][j] = int(map(sin(index[i][j]),abs(sin(j))*-1,abs(cos(i)),0,255));
      stroke(value[i][j],opacity[i][j]);
      point(i,j);
    }
  }
}

void draw(){
  loadPixels();
    if (threshold < 255) {
      for (int k=width; k<width*height-width; k++){
        if (brightness(pixels[k]) > threshold){
          pixels[k-1] = color(
            int(red(pixels[k+1])),
            int(green(pixels[k+1])),
            int(blue(pixels[k+1])),
            int(brightness(pixels[k+1]))
          );
        } else if (brightness(pixels[k]) == threshold) {
          pixels[k+width] = color(
            int(red(pixels[k-width])),
            int(green(pixels[k-width])),
            int(blue(pixels[k-width])),
            int(brightness(pixels[k-width]))
          );
        } else {
          pixels[k-width] = color(
            int(red(pixels[k+1])),
            int(green(pixels[k+1])),
            int(blue(pixels[k+1])),
            int(brightness(pixels[k+1]))
          );
        }
      }
      threshold = threshold+1;
    } else {
      threshold = 153;
  }
  updatePixels();
}

(via wowgreat)

forgethowtotalk:

//ivy
int threshold;

void setup(){
  size(500,500);
  frameRate(12);
  threshold = 135;
  loadPixels();
    for (int k=0; k<width*height; k++){
      pixels[k] = color(int(random(255)));
    }
  updatePixels();
}

void draw(){
  loadPixels();
    if (threshold < 153) {
      for (int k=width; k<width*height-1; k++){
        if (brightness(pixels[k]) > threshold){
          pixels[k] = color(int(brightness(pixels[k-width])));
        } else {
          pixels[k] = color(int(brightness(pixels[k+1])));
        }
      }
      threshold = threshold+1;
    } else {
      threshold = 135;
    }
  updatePixels();
}

(via wowgreat)