Navigation and Collision Detection for Web-Based 3D Experiment - Interactive Web-Based Virtual Reality with Java 3D - page 359

private void setRotation(TransformGroup Trans, float angle, Matrix3f rotMat, int mode)
{

Transform3D rt3d = new Transform3D();

Trans.getTransform(rt3d);

rotMat.transpose();

rotMat.invert();

rotMat.mul(rotMat, coMatrix(mode, angle));

rt3d.setRotation(rotMat);

Trans.setTransform(rt3d);

}

G.10 functIon for ImplementatIon of translatIon
for vIeW platform

private Point3f setTranslation(Matrix3f rotMat, Point3f posi)
{

Point3f tempposi = new Point3f();

tempposi.x = rotMat.m00*posi.x + rotMat.m01*posi.y + rotMat.m02*(posi.z+0.01f);

tempposi.y = rotMat.m10*posi.x + rotMat.m11*posi.y + rotMat.m12*(posi.z+0.01f);

tempposi.z = rotMat.m20*posi.x + rotMat.m21*posi.y + rotMat.m22*(posi.z+0.01f);

return tempposi;

}

G.11 functIon for ImplementatIon of translatIon
and rotatIon for transform Group

private void setPosition(TransformGroup Trans, Point3f point)
{

Transform3D t3d = new Transform3D();

Trans.getTransform(t3d);

t3d.setTranslation(new Vector3d(point));

Trans.setTransform(t3d);

}

G.12 event InItIalIZatIon functIon

public void initialize()
{

eventsCondition[0] = new WakeupOnAWTEvent(KeyEvent.KEY_PRESSED);
eventsCondition[1] = new WakeupOnCollisionEntry(bodyshape);
eventsCondition[2] = new WakeupOnBehaviorPost(null, VIEWMOTION);
allEvents = new WakeupOr(eventsCondition);
wakeupOn(allEvents);