code: public void setCenter(double centerX, double centerY, double centerZ) {
          this.centerX = centerX;
          this.centerY = centerY;
          this.centerZ = centerZ;
      }
docs: Sets the center of the scene of this Camera.
  
  @param centerX
  The x-coordinate for the center of the scene.
  @param centerY
  The y-coordinate for the center of the scene.
  @param centerZ
  The z-coordinate for the center of the scene.