Snowflake Generator - OpenProcessing

sketch298867
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//int snowflake[][] = new int[36][36];
​
float center = 17.5;
​
class Point
{
  int x;
  int y;
  int c;
  Point( int _x, int _y )
  {
    x = _x;
    y = _y;
  }
  void draw()
  {
    float x1 = x;
    float y1 = y;
  
    float angle = atan2( x1, y1 );
    float distance = sqrt( x1 * x1 + y1 * y1 );
    
    fill(255);
    strokeWeight(1);
    stroke(0);
    //color c = 255;
    for ( int i = 0; i < 6; i++ )
    {
      float x2 = sin(angle+i*3.141592654/3.0)*distance+center;
      float y2 = cos(angle+i*3.141592654/3.0)*distance+center;
      rect(16*int(x2), 16*int(y2), 16,16);//snowflake[int(x1+17.5)][int(y1+17.5)];// + snowflake[int(x2)][int(y2)])/2;
    }
  } 
};
​
ArrayList<Point> points = new ArrayList<Point>();
​
void setup()
{
  size(576,576);
  frameRate(120);
}
​
int c = 0;
​
void draw()
{
  //background(0);
  fill(0);
  strokeWeight(1);
  stroke(64);
    
  for ( int y = 0; y < 36; y++ )
  {
    for ( int x = 0; x < 36; x++ )
    {
      rect(16*x, 16*y, 16,16);
    }
  }
  noStroke();
  for ( int i = 0; i < points.size(); i++ )
  {
    points.get(i).draw();
  }
}
​
void mousePressed()
{
  if ( shiftDown )
  {
    //print("shiftdown");
    int x = int(mouseX/16.0);
    int y = int(mouseY/16.0);
    
    for ( int j = points.size()-1; j>=0; j-- )
    {
      float x1 = points.get(j).x;
      float y1 = points.get(j).y;
  
      float angle = atan2( x1, y1 );
      float distance = sqrt( x1 * x1 + y1 * y1 );
 
      for ( int i = 0; i < 6; i++ )
      {  
        int x2 = int(sin(angle+i*3.141592654/3.0)*distance+center);
        int y2 = int(cos(angle+i*3.141592654/3.0)*distance+center);
        if ( x == x2 && y == y2 )
          points.remove(j);//rect(16*int(x2), 16*int(y2), 16,16);//snowflake[int(x1+17.5)][int(y1+17.5)];// + snowflake[int(x2)][int(y2)])/2;
      }
    }
  }
  else
  {
    points.add( new Point(int(mouseX/16.0-center), int(mouseY/16.0-center)));
  }
}
​
boolean shiftDown = false;
​
void keyPressed()
{
  if ( keyCode == SHIFT )
    shiftDown = true;
​
  if ( key == 'z' ) 
  {
    if ( points.size() > 0 )
      points.remove(points.size()-1);
  }
  if ( key == 's' ) 
  {
    if ( points.size() > 0 )
      points.remove(points.size()-1);
  } 
}
​
void keyReleased()
{
  if ( keyCode == SHIFT )
    shiftDown = false; 
}