class MyPoint {
  
    float x,y,z;
    color c;
  
    MyPoint(float i, float j, float k){
      x = i;
      y = j;
      z = k;
    }
  
    void setColor(color cin){
      c = cin;
    }
  
    void rotatez (float angle, MyPoint ref) {
      float cosa, sina;
      cosa =   cos(angle);
      sina =   sin(angle);
      //Rotates point around z-axis
      float newx =  (x-ref.x) * cosa - (y-ref.y) * sina + ref.x;
      float newy =  (y-ref.y) * cosa + (x-ref.x) * sina + ref.y;
      x = newx;
      y = newy;
    }
  
    void rotatex (float angle, MyPoint ref) {
      float cosa, sina;
      cosa =   cos(angle);
      sina =   sin(angle);
      //Rotates point around x-axis
      float newx =  (x-ref.x) * cosa + (z-ref.z) * sina + ref.x;
      float newz =  (z-ref.z) * cosa - (x-ref.x) * sina + ref.z;
      x = newx;
      z = newz;
    }
  
    void rotatey (float angle, MyPoint ref) {
      float cosa, sina;
      cosa =   cos(angle);
      sina =   sin(angle);
      //Rotates point around y-axis
      float newy =   (y-ref.y) * cosa + (z-ref.z) * sina + ref.y;
      float newz =   (z-ref.z) * cosa - (y-ref.y) * sina + ref.z;
      y = newy;
      z = newz;
    }
  
    void scale (float sx, float sy, float sz, MyPoint ref) {
      x = (x-ref.x)*sx + ref.x;
      y = (y-ref.y)*sy + ref.y;
      z = (z-ref.z)*sz + ref.z;
    }
  
    void move(float xoff, float yoff, float zoff){
      x += xoff;
      y += yoff;
      z += zoff;
    }
  
    void draw(){
      beginShape(POINTS);
      vertex(x,y,z);
      endShape();
    }
  
    float xscreen(){
      float sx = screenX(x, y, z);
      return sx;
    }
    float yscreen(){
      return screenY(x, y, z);
    }
  }