public class Grille{
int k,alterne,opaque;
float w, h, pasx,pasy;
Vecteur[][] points;
Pointeur3D pointeur;
public Grille(float w,float h,int k){
      pointeur=new Pointeur3D();
      alterne=-1;
      opaque=205;
      this.w=w;
      this.h=h;
      this.k=k;
      this.pasx=w/k;
      this.pasy=h/k;
      points=new Vecteur[k][k];
      for(int i=0;i<k;i++){
        for(int j=0;j<k;j++){
          points[i][j]=new Vecteur(-w/2+pasx*i,-h/2+pasy*j,100);
        }
      }
}
public void dessiner(){
pointeur.dessiner();
repousserPoints();
     
  for(int i=0;i<k-1;i++){
        for(int j=0;j<k-1;j++){fill(255,opaque);
        beginShape();
        texture(photo);
          vertex(points[i][j].x,points[i][j].y,points[i][j].z,points[i][j].x+w/2,points[i][j].y+h/2);
          vertex(points[i+1][j].x,points[i+1][j].y,points[i+1][j].z,points[i+1][j].x+w/2,points[i+1][j].y+h/2);        
        vertex(points[i+1][j+1].x,points[i+1][j+1].y,points[i+1][j+1].z,points[i+1][j+1].x+w/2,points[i+1][j+1].y+h/2);          
         vertex(points[i][j+1].x,points[i][j+1].y,points[i][j+1].z,points[i][j+1].x+w/2,points[i][j+1].y+h/2);         
         endShape();
        }
      }
}


void repousserPoints(){
  float dis;
  for(int i=0;i<k;i++){
        for(int j=0;j<k;j++){
        Vecteur centreSph=vectImpact.ajouter(new Vecteur(0,0,pointeur.rayonSphere),-1);
          dis=points[i][j].ajouter(centreSph,-1).length();
          if(dis<pointeur.rayonSphere)
            points[i][j].z=vectImpact.z-pointeur.rayonSphere+sqrt(
              sq(pointeur.rayonSphere)-sq(vectImpact.x-points[i][j].x)-sq(vectImpact.y-points[i][j].y));
         
        }
      }
 

}
}