Generative art #103

Code

ArrayList<Form> forms;
ArrayList<Pendulum> pendulums;
Grid grid;
int drawMode = 1;

void setup() {
  size(840, 840);
  pixelDensity(2);
  noLoop();
  grid = new Grid(20, 20, 800, 800, 100);
  newForms();
}

void draw() {
  background(0);
  if (drawMode == 1) {
    blendMode(BLEND);
  }
  if (drawMode == 2) {
    blendMode(ADD);
  }

  for (int i = 0; i < forms.size(); i ++) {
    Form f = forms.get(i);
    f.show();

    Pendulum p = pendulums.get(i);
    stroke(getCol(), 90);
    for (int j = 0; j < 300; j ++) {
      p.run();
    }
  }
  grid.show();
}

void newForms() {
  forms = new ArrayList<Form>();
  pendulums = new ArrayList<Pendulum>();

  boolean useGrid[][] = new boolean[grid.cw][grid.cw];
  int emptys = grid.cw*grid.cw;
  while (emptys > 0) {
    float t = grid.t;
    int w = int(random(1, grid.cw));
    int x = int(random(grid.cw-w+1));
    int y = int(random(grid.ch-w+1));
    boolean colision = true;
    for (int j = 0; j < w; j++) {
      for (int i = 0; i < w; i++) {
        if (useGrid[x+i][y+j]) {
          colision = false;
          break;
        }
      }
    }
    if (colision) {
      for (int j = 0; j < w; j ++) {
        for (int i = 0; i < w; i ++) {
          useGrid[x+i][y+j] = true;
        }
      }
      forms.add(new Form(grid.x + x*t, grid.y+y*t, w*t, w*t));
      pendulums.add(new Pendulum(grid.x + x*t + (w*t)/2, grid.y+y*t + (w*t)/2, (w*t)/2));
      emptys -= w*w;
    }
  }
}

int[] colors = {#011627, #FDFFFC, #2EC4B6, #E71D36, #FF9F1C};
int getCol() {
  return colors[(int)random(colors.length)];
}

void mousePressed() {
  newForms();
  redraw();
}

void keyPressed() {
  if (key == 's')saveFrame("####.png");
  if (key == '1')drawMode = 1;
  if (key == '2')drawMode = 2;
}

//---------------------------------------------------------------
class Form {
  color col;
  float x, y, w, h;
  Form(float x, float y, float w, float h) {
    this.x = x;
    this.y = y;
    this.w = w;
    this.h= h;
  }

  void show() {
    stroke(255);
    fill(0);
    if (drawMode == 1) {
      stroke(0);
      fill(#4852FF);
    }
    rect(x, y, w, h);
  }
}

//---------------------------------------------------------------
class Grid {
  int cw, ch;
  float x, y, w, h, t;
  Grid(float x, float y, float w, float h, float t) {
    this.x = x;
    this.y = y;
    this.w = w;
    this.h = h;
    this.t = t;
    cw = int(w/t);
    ch = int(h/t);
  }

  void show() {
    noStroke();
    fill(0);
    for (float j = y; j <= y+h; j+=t) {
      for (float i = x; i <= x+w; i+=t) {
        circle(i, j, 5);
      }
    }
  }
}

//---------------------------------------------------------------
class Pendulum {
  float x, y;
  float len1, len2;
  float angle1, angle2;
  float aStep1, aStep2;

  Pendulum(float x, float y, float l) {
    this.x = x;
    this.y = y;
    len1 = l/2;
    len2 = l-len1;
    angle1 = random(PI);
    angle2 = random(PI);
    aStep1 = radians(random(1,3));
    aStep2 = radians(random(1));
  }

  void run() {
    show();
    move();
  }

  void show() {
    pushMatrix();
    translate(x, y);
    rotate(angle1);
    line(0, 0, len1, 0);
    push();
    translate(len1, 0);
    rotate(angle2);
    line(0, 0, len2, 0);
    pop();
    popMatrix();
  }

  void move() {
    angle1 += aStep1;
    angle2 += aStep2;
  }
}

正方形を充填させる形。
そこに二重振り子的な形を置いて、アクセサリーケースのようなイメージで。

しばらくblendMode()で光らせてなかったなと思ったから使いたかった。

Happy coding!