import SGBackground.*;
import SGCamera.*;
import Tuple.*;
 
//created=16 March 07
//title=Camera Example
//titlebar=Multiple Camera Example
//publish=false
 
int which = 1;
 
Vector cast;
float az = 0, el =0;
 
float jx=0,jy=0;
PImage a,b;
 
float sz = 20;
float cx = 0,cy = 100, cz = 45;
float lx = 0.0, ly = -1, ez = 45;        
 
SGCamera cam,trackCam;
KeyMoveCam cam2;
CubeSky sky;  
SGCamera currentCam;
float dx, dy;
 
void setup() 
{ 
  frameRate(45);
  size( 550, 550, P3D); 
  hint(g.ENABLE_ACCURATE_TEXTURES) ;
  a = loadImage("poenderous.png");
  b = loadImage("screamPon.png");
 
  cast = new Vector();
 
  Guy scream = new Guy();
  scream.x =0;
  scream.y =0;
  scream.tex = b;
  cast.add(scream);
  for (int i=0; i < 20; i++){
    cast.add(new Guy());
  }
 
  ellipseMode(CENTER);
 
  cam = new SGCamera(this,-50,-80,-100,0,0,0, SGCamera.UNBOUND, SGCamera.UNBOUND);
  cam2 = new KeyMoveCam(this,0,-30,0,0,-30,-20);
  trackCam = new SGCamera(this,50,-80,-100,0,0,0, SGCamera.UNBOUND, SGCamera.UNBOUND);
 
  PImage [] cubeMap = new PImage[6];
  for (int i =0; i < 6; i++){
    cubeMap[i] = loadImage("testPattern.jpg");
  }
  sky = new CubeSky(this, cam,cubeMap);
  sky = new CubeSky(this, cam,"uffizi_gallery","png");
} 
 
void draw(){ 
 
  sky.draw();
  
  cam2.feed();
 
  switch(which){
  case 0: 
    cam.feed();
    currentCam = cam;
    break;
  case 1: 
    cam2.feed();
    currentCam = cam2;
    break;
  case 2: 
    trackCam.feed();
    currentCam = trackCam;
    break;
  }
  stroke(0);
  noFill();
 
  cam.render(sz);
  cam2.render(sz);
  trackCam.render(sz);
 
  fill(200,200,220);
 
  noStroke();
 
  beginShape();
  vertex(-500,1,-500);
  vertex(-500,1,500);
  vertex(500,1,500);
  vertex(500,1,-500);
  endShape();
 
 
  Guy curr;
  
  //two steps. first, we sort  
  for (int i=0; i < cast.size(); i++){
    curr = (Guy)cast.elementAt(i);
    curr.calcDist(currentCam.pos);
  }
  Collections.sort(cast);
  for (int i=0; i < cast.size(); i++){
    curr = (Guy)cast.elementAt(i);
    curr.draw();
  }
 
  trackCam.setTarget(cam2.pos.x, cam2.pos.y, cam2.pos.z);
 
} 
 
 
 
void keyPressed(){
  if (key == ' '){
    which++;
    if (which ==3) which = 0;
  }
}
 
 
class Guy implements Comparable{
 
  float accum = 0;
 
  PImage tex;
  float x,y,z;
  float camDist = 0;
 
  void calcDist(Tuple3f pos){
    camDist = (pos.x-x)*(pos.x-x) + (pos.z-z)*(pos.z-z);
  }
 
  public Guy (){
 
    x = random(-300,300);
    z = random(-300,100);
    //accum = random(0,2*PI);
    tex = a;
  }
 
  void draw(){
    textureMode(NORMALIZED);
    pushMatrix();
    fill(0,7);
    rotateX(PI/2);
 
    ellipse(x,z,10,10);
    ellipse(x,z,20,20);
    ellipse(x,z,30,30);
 
    rotateX(-PI/2);
 
 
    translate( x,-25,z);
    rotateY(accum);
 
    fill(0,255);
 
    beginShape();
    texture(tex);
    vertex(-10, -25, 0, 0);
    vertex(10, -25, 1, 0);
    vertex(10, 25, 1, 1);
    vertex(-10, 25, 0, 1);
    endShape();
 
    popMatrix();
 
  }
 
  int compareTo(Object o){
    if (((Guy)o).camDist < camDist) return -1;
    else return 1;
  }
 
}