public void setConer ( int index , Vector3D v ) { if ( index <= 0 ) { this . x1 = v . getX ( ) ; this . y1 = v . getY ( ) ; } else if ( index == 1 ) { this . x2 = v . getX ( ) ; this . y2 = v . getY ( ) ; } else if ( index == 2 ) { this . x3 = v . getX ( ) ; this . y3 = v . getY ( ) ; } else if ( 3 <= index ) { this . x4 = v . getX ( ) ; this . y4 = v . getY ( ) ; } calcG ( ) ; }
Sets coordinates of a corner .