import processing.pdf.*;

import traer.physics.*;

ParticleSystem physics;
Particle[][] particles;
int gridSize = 80;
int posx, posy;
float counter=0;

boolean record = false;
void setup()
{
  if (record) size(800, 800, PDF, "filename.pdf"); else size(600,600);
  smooth();
 // strokeWeight(1);
  //noStroke();
  noFill();
  colorMode(HSB, 255);
  frameRate(60);
        
  physics = new ParticleSystem(0.5, 0.05);
  
  particles = new Particle[gridSize][gridSize];
  
  float gridStepX = (float) (width / gridSize);
  float gridStepY = (float) (height / gridSize);
  
  for (int i = 0; i < gridSize; i++)
  {
    for (int j = 0; j < gridSize; j++)
    {
      particles[i][j] = physics.makeParticle(0.4, sin(j/180*3.14) * 10 * gridStepX + (width / 4), cos(i/180*3.14) * 10 * gridStepY + 20, 0.0);
      if (j > 0)
      {
        physics.makeSpring(particles[i][j - 1], particles[i][j], 18.0, 0.01, gridStepX);
      }
    }
  }
  
  for (int j = 0; j < gridSize; j++)
  {
    for (int i = 1; i < gridSize; i++)
    {
      physics.makeSpring(particles[i - 1][j], particles[i][j], 18.0, 0.01, gridStepY);
    }
  }
  
  particles[0][0].makeFixed();
  particles[0][gridSize - 1].makeFixed();
  
  background(255);

}

void draw()
{
  translate(width/2,height/2);
  rotate(counter/10);

 physics.advanceTime(0.1);


 posx = mouseX;
 posy = mouseY;
 
 posx = round(sin(counter)+sin(counter*10)*cos(counter/2)*500+200);
 posy = round(cos(counter)*cos(counter/10)*500+200);
 counter=counter+0.02;
 for (int i = 0; i < gridSize; i++)
  {   
    particles[i][gridSize - 1].moveTo(posx,posy, 0);
    particles[i][0].moveTo(posy, posx, 0);
  }
 
  
  background(255);
  
   for (int i = 0; i < gridSize; i++)
  {
   
    //strokeWeight(abs(posx/100)); 
    translate(i,i);
    rotate(counter);
    scale(0.92);
    
    //stroke(i,(i*posx*counter)%255,(i*posy*abs(cos(counter)))%255,abs((counter*i*posx)));
    //noStroke();
    fill((i+counter)/100,(i*posx*counter)%255,(i*posy*abs(cos(counter)))%255,abs((i*posx)));
//noFill();
    beginShape( POLYGON );
    
    curveVertex(particles[i][0].position().x(), particles[i][0].position().y());
    for (int j = 0; j < gridSize; j++)
    {
      curveVertex(particles[i][j].position().x(), particles[i][j].position().y());
     // curveVertex(-particles[j][i].position().x()*0.5, particles[j][i].position().y()*0.5);
      
    }
    curveVertex(particles[i][gridSize - 1].position().x(), particles[i][gridSize - 1].position().y());
    endShape();
  }
  
 
  if (record) {
     PGraphicsPDF pdf = (PGraphicsPDF) g; 
    pdf.nextPage();
   println(frameCount);  
  if (frameCount == 200) {
    exit();
  }
  }
  /* loadPixels();
  color c;
  for (int i=0;i<width;i++)  {
    for (int j=0;j<height;j++)  {
       c=pixels[i+j*width]-60;
       pixels[i+j*width]=color(red(c)+10,green(c)+5,blue(c)+5);
    }
  }
  updatePixels();*/
  
 
}

void mouseReleased()
{
 // particles[0][gridSize - 1].setVelocity( (mouseX - pmouseX), (mouseY - pmouseY), 0 );
}

void mousePressed()  {
  exit();
}