Test01 - OpenProcessing

mySketch
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float xInit, yInit, xPlus, yPlus, xWidth, yHeight;
color [] colors = new color [2];
color Green = color(0, 144, 58);
color Lightgreen = color(142, 194, 31);
boolean goDir = true;
PImage img;
​
void setup() {
  size(640, 360);
  background(255);
  smooth();
  colors[0] = Green;
  colors[1] = Lightgreen;
  fill(colors[int(round(random(1)))]);
  noStroke();
  img = loadImage("test.jpg");
​
  aPattern();
}
​
void draw() {
}
​
void keyPressed() {
  if (key == '1') {
    aPattern();
  }
  if (key == '2') {
    bPattern();
  }
  if (key == '3') {
    cPattern();
  }
}
​
void allShapes(float _x, float _y, float _w, float _h) {
  float x = _x;
  float y = _y;
  float w = _w;
  float h = _h;
  int numbers = 10;
  int yAdd = 12;
  int yMinus = 1;
  for (int i = 0; i < yMinus * numbers; i += yMinus) {
    beginShape();
    vertex(x, y + i*yAdd);
    vertex(x + w, y - h + i*yAdd);
    vertex(x + w, y - i + i*yAdd);
    vertex(x, y + h - i + i*yAdd);
    endShape(CLOSE);
  }
  fill(colors[int(round(random(1)))]);
}
​
void aPattern() {
  background(255);
  xInit = 0;
  yInit = 10.0 * random(-10, 10);
  xPlus = 20.0;
  yPlus = 160.0;
  xWidth = 20.0;
  yHeight = 10.0;
  float y = yInit;
  float x = xInit;
  while (x < width) {
    allShapes(x, y, xWidth, yHeight);
    y += yPlus;
    if (y > height) {
      y = yInit * random(-20, 10);
      x += xPlus;
    }
  }
}
​
void bPattern() {
  background(255);
  xInit = 0;
  yInit = height - 10;
  xPlus = 20.0;
  yPlus = 15.0;
  xWidth = 20.0;
  yHeight = 10.0;
  float y = yInit;
  float x = xInit;
  while (x < width) {
    allShapes(x, y, xWidth, yHeight);
    x += xPlus;
    if (goDir == true) {
      y -= yPlus * random(1, 2);
    }
    if (goDir == false) {
      y += yPlus * random(1, 2);
    }
    if (y < 50) {
      goDir = false;
    }
    if (y > height - 20) {
      goDir = true;
    }
  }
}
​
void cPattern() {
  background(255);
  int steps = 10;
  xWidth = 10.0;
  yHeight = 5.0;
  float w = xWidth;
  float h = yHeight;
  for (int x = 0; x < img.width; x += steps) {
    for (int y = 0; y < img.height; y += steps) {
      color c = img.pixels[y * img.width + x];
      float b = brightness(c);
      if (b < 200) {
        int yAdd = 12;
        beginShape();
        vertex(x, y + yAdd);
        vertex(x + w, y - h + yAdd);
        vertex(x + w, y + yAdd);
        vertex(x, y + h + yAdd);
        endShape(CLOSE);
        fill(colors[int(round(random(1)))]);
      }
    }
  }
}