Examples of javax.media.j3d.Transform3D.invert()

javax.media.j3d.Transform3D.invert()
Sets the value of this transform to the inverse of the passed Transform3D parameter. This method uses the transform type to determine the optimal algorithm for inverting transform t1. @param t1 the transform to be inverted @exception SingularMatrixException thrown if transform t1 isnot invertible

        TransformGroup zoomTrans = mtg.getTransformGroup(4);
        zoomTrans.setTransform(new Transform3D(new Quat4d(), new Vector3d(0.0, 0.0, 20*BoardModel.HEX_DIAMETER), 1.0));


        Transform3D etrans = new Transform3D();
        etrans.lookAt(new Point3d(0, 0, 0), new Point3d(0, 0, -1), new Vector3d(0, 1, 0));
        etrans.invert();
        mtg.getTransformGroup(5).setTransform(etrans);


        MouseWheelZoom behavior0 = new MouseWheelZoom(zoomTrans);
        behavior0.setFactor(-BoardModel.HEX_DIAMETER/3);
        controllers.addChild(behavior0);

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        rtrans.rotX(-Math.PI/2);
        rotateTrans.setTransform(rtrans);


        Transform3D etrans = new Transform3D();
        etrans.lookAt(new Point3d(0.0, 0.0, 20*BoardModel.HEX_DIAMETER), new Point3d(0, 0, 0), new Vector3d(0, 1, 0));
        etrans.invert();
        mtg.getTransformGroup(5).setTransform(etrans);


        MouseWheelZoom behavior0 = new MouseWheelZoom(wheel);
        behavior0.setFactor(1.0/3);
        behavior0.setupCallback(this);

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            // Pen onto desk:
            
            deskPendulumYJoint.getTransformToWorld(transformFromDeskToWorld);
            transformFromWorldToDesk.set(transformFromDeskToWorld);
            transformFromWorldToDesk.invert();
            
            deskSurfaceNormal.set(0.0, 0.0, 1.0);
            transformFromDeskToWorld.transform(deskSurfaceNormal);
            
            deskCenterExternalForcePoint.getPosition(deskCenterPosition);

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        // args are: viewer posn, where looking, up direction
        t3d.lookAt(new Point3d(60,30,15), 
               new Point3d(0,30,0),
               new Vector3d(0,0,1)
          );
        t3d.invert();


        steerTG.setTransform(t3d);
    }


    /**

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/*      */ 
/*  863 */     if (this.echoType == 23) {
/*  864 */       Transform3D gnomonTransform = new Transform3D();
/*  865 */       if (this.nominalSensorRotation != null) {
/*  866 */         gnomonTransform.set(this.nominalSensorRotation);
/*  867 */         gnomonTransform.invert();
/*      */       }
/*  869 */       gnomonTransform.setTranslation(new Vector3d(hotspot));
/*  870 */       this.echoGeometry = new SensorGnomonEcho(gnomonTransform, 0.1D * this.echoSize, 0.5D * this.echoSize, true);
/*      */     }
/*  873 */     else if (this.echoType == 24) {

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