`private void camMove(){

    Point3d newLoc = this.bob.getCurrLoc();
    // printTuple(newLoc, "newLoc");
    Vector3d trans = new Vector3d( -newLoc.x + this.bobPosn.x,
                                0, -newLoc.z + this.bobPosn.z);
    this.viewerTG.getTransform( this.t3d );
    this.movements3.setTranslation(trans);  // overwrites previous translation
    this.t3d.mul(this.movements3);
    this.viewerTG.setTransform(this.t3d);

    this.bobPosn = newLoc;   // save for next time

}
private void camRot(){
    this.viewerTG.getTransform( this.t3d );
    this.movements.setTranslation(new Vector3d(0,0,-this.ZOFFSET));
    this.t3d.mul(this.movements);
    this.camrot.rotY(-this.bob.drot);   // overwrite previous rotation
    this.t3d.mul(this.camrot);
    this.movements2.setTranslation(new Vector3d(0,0,this.ZOFFSET));
    this.t3d.mul(this.movements2);
    this.viewerTG.setTransform(this.t3d);

}

public void gameupdate(){
    if (this.bob.drot != 0){
        camRot();
    }
    if ((this.bob.dx != 0)||(this.bob.dz != 0)){
        camMove();
    }    `