/**
 * OpenSceneGraph Haptic Library, OsgHaptics
 * Copyright (C) 2006 VRlab, Umeå University
 *
 * OsgHaptics was created using the libraries:
 *              OpenSceneGraph (http://www.openscenegraph.org), 
 *              OpenHaptics (http://www.sensable.com
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA.
 */

OpenSceneGraph Haptic Library - OsgHaptics is a library that integrates haptic rendering 
to the open source scenegraph OpenSceneGraph.

There are demo applications in the examples sub-directory

osgHapticviewer
---------------

Description: The use of a visitor to make any osg-model haptically rendereable.
Loads any model that osg supports and allows the user to touch it with the proxy.

Usage: osgHapticViewer <modelfile>
Example: osgHapticViewer cow.osg

Command-line options: 
  --proxy-scale <float>  - Scale the size of the model used as a visual proxy
  --constraint <float>   - Set the surface to be a constraint surface with snap_force specified
  --dynamic-friction <float> - Set the dynamic friction of the haptic surface 
  --static-friction <float> - Set the static friction of the haptic surface
  --damping <float> - Set the damping in the friction equation (spring)
  --stiffness <float> - Set the stiffness in the friction equation (spring)

Example: osgHapticViewer cow.osg --dynamic-friction 0 --static-friction 0 --stiffness 1 --damping 1

For more information look at: http://www.vrlab.umu.se/research/osgHaptics/osghapticviewer.shtml

  
dexterity_game
--------------
Description: A very simple version of the dexterity game. Try to move the ring object over
a wire without touching it.

Usage: dexterity_game <background model>
Example: dexterity_game room.ac

Make sure your current directory is the data sub-directory, or that you have OSG_FILE_PATH
referring to that directory.

material_demo
--------------
Description:   Demonstrates different surface properties in osgHaptics.
Uses a visitor (HapticMaterialVisitor that parses strings in node-descriptions 
to create an set properties on surfaces.

Usage: material_demo material_demo.osg

Make sure your current directory is the data sub-directory, or that you have OSG_FILE_PATH
referring to that directory.

forceoperator_demo
--------------------
Description: Demonstrates the use of a SpringForce operator (inside a HapticSpringNode)
to generate spring forces. In this example an animated named node is found, and the 
HapticSpringNode is attached as a child. The motion of the animated node is then transferred automatically
to the haptic spring. When enabled (F1) the haptic device will follow the motion.

Keys: F1 - Toggle spring on/off
F2 - Increase spring stiffness
Shift+F2 - Decrease spring stiffness


Usage: forceoperator_demo forceoperator_scene.osg

sensorEventHandler_demo
-----------------------
Description: Demonstrates the osgSensor::SensorEventHandler that is used to handle
events from the Sensor devices, i.e. BUTTON events and UPDATE.

Usage: sensorEventHandler_demo <osg-filename>

Contact:
Anders Backman, VRlab, andersb@cs.umu.se