citizen/archive/citizen_blobdetect/citizen_blobdetect.pde

PImage img_houses;

void setup() {
  size(400, 300);
  textSize(30);
  fill(0);

  img_houses = loadImage(dataPath("map/houses_with_borders.png"));

  surface.setSize(img_houses.width, img_houses.height);
}

void mousePressed() {
  img_houses.loadPixels();
  if (int(red(img_houses.pixels[mouseY*img_houses.width+mouseX])) == 187) {
    println("clicked on house");
    spawnAreas.add(new SpawnArea(mouseX, mouseY));
  }
  img_houses.updatePixels();
}

ArrayList<SpawnArea> spawnAreas = new ArrayList<SpawnArea>();


class SpawnArea {
  //simplified hull?
  ArrayList<PVector> v2_points = new ArrayList<PVector>();

  SpawnArea(int startX, int startY) {
    int x = startX;
    int y = startY;
    
    v2_points.add(new PVector(x, y));
    
   
    
    //while (int(red(img_houses.pixels[y*img_houses.width+x])) == 187) {
    //  y++;
    //  v2_points.add(new PVector(x, y));

    //  while (int(red(img_houses.pixels[y*img_houses.width+x])) == 187) {
    //    v2_points.add(new PVector(x, y)); 
    //    y++;
    //  }
      
    //  y = startY;

    //  x++;
    //}

    //x = startX-1;
    //y = startY+1;
    //while(int(red(img_houses.pixels[y*img_houses.width+x])) == 187){
    //  v2_points.add(new PVector(x, y));
    //  x--;
    //}
    
    
  }
}


void draw() {
  background(255);
  image(img_houses, 0, 0, img_houses.width, img_houses.height);
  for (SpawnArea spawn : spawnAreas) {

    for (PVector point : spawn.v2_points) {
      point(point.x, point.y);
    }
  }

  text(int(frameRate), 0, 30);
}