abstract class Shape3D{
    float x, y, z;
    float w, h, d;
  
    Shape3D(){
    }
  
    Shape3D(float x, float y, float z){
      this.x = x;
      this.y = y;
      this.z = z;
    }
  
    Shape3D(PVector p){
      x = p.x;
      y = p.y;
      z = p.z;
    }
  
    Shape3D(Dimension3D dim){
      w = dim.w;
      h = dim.h;
      d = dim.d;
    }
  
    Shape3D(float x, float y, float z, float w, float h, float d){
      this.x = x;
      this.y = y;
      this.z = z;
      this.w = w;
      this.h = h;
      this.d = d;
    }
  
    Shape3D(float x, float y, float z, Dimension3D dim){
      this.x = x;
      this.y = y;
      this.z = z;
      w = dim.w;
      h = dim.h;
      d = dim.d;
    }
  
    Shape3D(PVector p, Dimension3D dim){
      x = p.x;
      y = p.y;
      z = p.z;
      w = dim.w;
      h = dim.h;
      d = dim.d;
    }
  
    void setLoc(PVector p){
      x=p.x;
      y=p.y;
      z=p.z;
    }
  
    void setLoc(float x, float y, float z){
      this.x=x;
      this.y=y;
      this.z=z;
    }
  
    // override if you need these
    void rotX(float theta){
    }
  
    void rotY(float theta){
    }
  
    void rotZ(float theta){
    }
  
    // must be implemented in subclasses
    abstract void init();
    abstract void create();
  }