// W:Mute 2005
// www.wmute.org
psystem ps;
int nump;
int mode;
float ay,ax,aay,aax;
vector3D offset;
boolean rot,firstclick,drawing;
framePoster fPost = new framePoster("tangle","tangle");
boolean SAVING;
int saveLag;

void setup(){
  size(600,600,P3D);
  //hint(ENABLE_OPENGL_4X_SMOOTH);
  background(255);
  colorMode(HSB);
  frameRate(18);
  strokeWeight(2);
  //depth();
  rot=drawing=true;
  firstclick=true;
  nump=81;
  go(); 
}

void go(){
  mode=nump;
  ay=ax=0.0;
  aay=random(-0.01,0.01);
  aax=random(-0.005,0.005);
  ps = new psystem(nump, 200.0);
  offset = new vector3D(-300,-300,0);
  calculate();
}

void calculate(){
  int count=0;
  while (count<127){
    ps.update(0.5);
    count++;
  } 
}

void draw(){
  if (drawing){
    background(255);
    ps.draw3D(offset,mode,0.5,ay,ax);
    ay+=aay;
    ax+=aax;

  }  
    if(SAVING) saveLag--;
  if(saveLag<=0){
    SAVING=false;
    saveLag=10;
  }
}

void mouseReleased(){
  rot=!rot;
  if (rot){
    drawing=true; 
    ay=ax=0.0;
    aay=random(-0.01,0.01);
    aax=random(-0.005,0.005);
  }
}

void keyReleased(){

  if ((key == ' ')&&(!SAVING)) {      
    SAVING=true;
    fPost.postFrame();   
  }
  else{
      rot=drawing=true;
  go();
    }
}