Drawing tetrahedron according to user input in Swing

Question

I need to write a program which can draws a tetrahedron (a three-dimensional shape with four triangular faces). And we have to use class s GeneralPath and method draw of class Graphics2D.Any ideas on how to do that,

Answer 1

I've done similar program like this before, I have created two arrays calling baseX and baseY and set coordinates to it.Then added two for loops to make the corners. This way you can draw even a cube as well

 import java.awt.*; 
  import java.awt.geom.*;  
  import java.awt.event.*; 
  import javax.swing.*; 
  public class Tetrahedron extends JFrame {
  // constructor 
  public Tetrahedron() 
  {super( "Tetrahedron" );
  setSize( 275, 150 );
  setVisible( true );  } 
  // draw tetrahedron 
  public void paint( Graphics g )
  {
  super.paint( g );     
  int baseX[] = { 110, 150, 50, 110 };
  int baseY[] = { 90, 130, 130, 90 };
  int x = 110, y = 40; 
  Graphics2D g2d = ( Graphics2D ) g;
  g2d.setColor( Color.red );
  GeneralPath tetrahedron = new GeneralPath();
  tetrahedron.moveTo( baseX[ 0 ], baseY[ 0 ] ); 
  for ( int i = 1; i < 4; i++ ) {
  tetrahedron.lineTo( x, y ); 
  tetrahedron.moveTo( baseX[ i - 1 ], baseY[ i - 1 ] );
  tetrahedron.lineTo( baseX[ i ], baseY[ i ] ); 
  }tetrahedron.closePath(); g2d.draw( tetrahedron ); 
  }
  public static void main( String args[] )
  {Tetrahedron application = new Tetrahedron();
  application.setDefaultCloseOperation( EXIT_ON_CLOSE );    }  }

Referenced from: JAVA how to program 5th edition,written by Harvey Deitel,Paul Deitel