import saito.objloader.*;
OBJModel model;
Camera cam;
float theta,phi,rayon,angle;
Quat lequat,lequat0;
Vecteur axe;
boolean brelache;


//++++++++++++++++++++++++++++++++++++++++++++++++++
//
//++++++++++++++++++++++++++++++++++++++++++++++++++

void setup(){
  model = new OBJModel(this);
  model.debugMode();
  model.load("Teddy.obj");
  size(700,500,P3D);
  brelache=true;
  rayon=400;
  theta=1.0f;
  phi=1.0f;
  lequat=new Quat(1,0,0,0);
  lequat0=new Quat(1,0,0,0);

  cam=new Camera();

  angle=0;
  axe=new Vecteur(1,0,0);


}
//++++++++++++++++++++++++++++++++++++++++++++++++++
//
//++++++++++++++++++++++++++++++++++++++++++++++++++
void draw(){
  background(140,120,200);
  pushMatrix(); 
  pointLight(70, 52, 100, 0, -500, -1000);
    directionalLight(255, 255, 255, 0,10,5);
  //spotLight(v1, v2, v3, x, y, z, nx, ny, nz, angle, concentration)
  spotLight(155, 102, 255, 1000, -5000, -2000, 2, -2, 23, 0.8, 0.2);
  //ambientLight(100,100, 150);
    cam.placercamera();
    dessinerDecor();
    dessinerSphere();
    pointeur();
  popMatrix();

}

//++++++++++++++++++++++++++++++++++++++++++++++++++
//
//++++++++++++++++++++++++++++++++++++++++++++++++++


void mouseReleased() {
  brelache=true;
}
void mouseDragged(){
  if(brelache==true){
    brelache=false;
    cam.intersectionRayonSphere();
  }
  else{
    if(mouseButton==RIGHT){//Déplacer la caméra en calculant son nouveau repere 
      theta=(mouseY-pmouseY)/120.0f;
      phi=(mouseX-pmouseX)/120.0f;
      lequat=Quat.mul(new Quat(cos(theta/2),sin(theta/2),0,0),lequat);
      lequat=Quat.mul(new Quat(cos(phi/2),0,0,sin(phi/2)),lequat);
      cam.tournerCam(lequat);//lequat est le quaternion de rotation de la caméra!
    }
    if(mouseButton==LEFT){//déplacer le sélecteuren calculant le vecteur vectImpact 
      Vecteur v=cam.vectImpact.normerCopie(1);
      cam.intersectionRayonSphere();
      Vecteur w=cam.vectImpact.normerCopie(1);
      angle = acos(w.dot(v));
      axe=(v.cross(w)).normerCopie(1);    
      lequat0=Quat.mul(new Quat(axe,angle,1),lequat0);//lequat0 est le quaternion de rotation du trackball
    }
  }
}

//++++++++++++++++++++++++++++++++++++++++++++++++++
//
//++++++++++++++++++++++++++++++++++++++++++++++++++
public void pointeur(){
  //dessiner le pointeur au point d'impact
  Vecteur v=cam.vectImpact.normerCopie(1);
  float a=acos(v.x);
  Vecteur w=new Vecteur(0,-v.z,v.y);
  w.normalize();
  pushMatrix();
  rotate(a,w.x,w.y,w.z);
  fill(255,100,100);
  noStroke();
  beginShape(QUAD_STRIP);
  for(int i=0;i<=12;i++){
    float a1=PI/6*i;   
    vertex(0,10*cos(a1),10*sin(a1));
    vertex(rayon-15,10*cos(a1),10*sin(a1));
  } 
  endShape();
  beginShape(TRIANGLE_FAN);
  vertex(rayon,0,0);
  for(int i=0;i<=12;i++){
    float a1=PI/6*i;      
    vertex(rayon-20,20*cos(a1),20*sin(a1));
  } 
  endShape();
  popMatrix();



}
//++++++++++++++++++++++++++++++++++++++++++++++++++
//
//++++++++++++++++++++++++++++++++++++++++++++++++++
void dessinerSphere(){
  float[] a=lequat0.getValue();
  noStroke();
  pushMatrix();
  rotate(a[0],a[1],a[2],a[3]);
  pushMatrix();
 // translate(0,-200,-1900);
  scale(17);
  rotateX(PI);
  model.draw();
  popMatrix();
  for(int li=0;li<4;li++){
    rotateX(PI/4);
    for(int j=0;j<40;j++){  
      pushMatrix();
      rotateZ(j*PI/20);
      translate(rayon,0,0);
      rotateZ(PI/2);
      dessinerCylindre(4,rayon*sin(PI/20)/2+3);
    
      popMatrix();
    }
 
  }
  
  popMatrix();
}


//++++++++++++++++++++++++++++++++++++++++++++++++++
//
//++++++++++++++++++++++++++++++++++++++++++++++++++
void dessinerCylindre(float d2,float h2){

  float ds=d2*sin(PI/3);
  float dc=d2*cos(PI/3);	
  noStroke();
  fill(255);
 beginShape(QUADS);
 
  vertex(h2,d2,0);//,0,0
  vertex(h2,dc,ds);//,0,10
  vertex(-h2,dc,ds);//,400,10	
  vertex(-h2,d2,0);//,400,0
  endShape();
  beginShape(QUADS);	
 
  vertex(h2,dc,ds);//,0,0
  vertex(h2,-dc,ds);//,0,10
  vertex(-h2,-dc,ds);//	,400,10
  vertex(-h2,dc,ds);//,400,0	
  endShape();
 beginShape(QUADS);	
 
  vertex(h2,-dc,ds);//,0,0
  vertex(h2,-d2,0);
  vertex(-h2,-d2,0);	
  vertex(-h2,-dc,ds);	
  endShape();

 beginShape(QUADS);		
  
  vertex(h2,-d2,0);
  vertex(-h2,-d2,0);  
  vertex(-h2,-dc,-ds);
 vertex(h2,-dc,-ds);
  endShape();
 beginShape(QUADS);		

 
  vertex(h2,-dc,-ds);
  vertex(h2,dc,-ds);
  vertex(-h2,dc,-ds);	
  vertex(-h2,-dc,-ds);
  endShape();
  beginShape(QUADS);			

 	
  vertex(h2,d2,0);
  vertex(h2,dc,-ds);
  vertex(-h2,dc,-ds);	
  vertex(-h2,d2,0);					
  endShape();			
}
void dessinerDecor(){
  noStroke();
beginShape(QUADS);
      fill(105,55,155);
      vertex(-5555,-2222,7000);
      vertex(5555,-2222,7000); 
      fill(105,155,155);    
      vertex(5555,2222,7000);
      vertex(-5555,2222,7000);

      fill(105,55,155);
      vertex(5555,-2222,7000);
      vertex(5555,2222,7000);
      fill(105,155,155);  
      vertex(9666,2222,1000);
      vertex(9666,-2222,1000);
  
      fill(105,55,155);
      vertex(-5555,-2222,7000);
      vertex(-5555,2222,7000);
    fill(105,155,155);    
      vertex(-9666,2222,1000);
      vertex(-9666,-2222,1000);
      
endShape();
}