Navigation and Collision Detection for Web-Based 3D Experiment - Interactive Web-Based Virtual Reality with Java 3D - page 365

setPosition(outsideTrans, new Point3f(Outsidescale*viewposi.x, outsideposi.y, outsideposi.z));

break;

case Backward:

viewposi.x = viewposi.x-4.0f*SPAN*(float)Math.sin(turningAngle);

viewposi.z = viewposi.z-4.0f*SPAN*(float)Math.cos(turningAngle);

setPosition(bodyTrans, viewposi);

setPosition(viewTrans, viewposi);

if (outsideTrans!=null)

setPosition(outsideTrans, new Point3f(Outsidescale*viewposi.x, outsideposi.y, outsideposi.z));

break;

case SHIFTLEFT:

viewposi.x = viewposi.x+2.0f*SPAN*(float)Math.sin(turningAngle+Math.PI/2.0);

viewposi.z = viewposi.z+2.0f*SPAN*(float)Math.cos(turningAngle+Math.PI/2.0);

setPosition(bodyTrans, viewposi);

setPosition(viewTrans, viewposi);

if (outsideTrans!=null)

setPosition(outsideTrans, new Point3f(Outsidescale*viewposi.x, outsideposi.y, outsideposi.z));

break;

case SHIFTRIGHT:

viewposi.x = viewposi.x-2.0f*SPAN*(float)Math.sin(turningAngle+Math.PI/2.0);

viewposi.z = viewposi.z-2.0f*SPAN*(float)Math.cos(turningAngle+Math.PI/2.0);

setPosition(bodyTrans, viewposi);

setPosition(viewTrans, viewposi);

if (outsideTrans!=null)

setPosition(outsideTrans, new Point3f(Outsidescale*viewposi.x, outsideposi.y, outsideposi.z));

break;

default:

}

}
}
}
this.wakeupOn(allEvents);

}

G.15 events functIon for navIGatIon control
panel

public void actionPerformed(ActionEvent e)

{

String radiobutton = e.getActionCommand();

if (radiobutton.indexOf(“Animation”)!=-1)

{

animating = true;

viewposi = new Point3f(firstviewposi);

if (pitchAngle!=0)

{

setRotation(viewTrans, -pitchAngle, comMat, 2);

pitchAngle = 0.0f;