/**
 *  ofxProjectorBlend
 *  (version 2.0)
 *
 * based on Paul Bourke's paper http://local.wasp.uwa.edu.au/~pbourke/texture_colour/edgeblend/
 * Original openFrameworks addon by James George, http://www.jamesgeorge.org
 * in collaboration with FlightPhase http://www.flightphase.com
 * additions by Marek Bereza, http://www.mazbox.com/
 * further additions by Jeff Crouse http://www.jeffcrouse.info
 *
 * Permission is hereby granted, free of charge, to any person
 * obtaining a copy of this software and associated documentation
 * files (the "Software"), to deal in the Software without
 * restriction, including without limitation the rights to use,
 * copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following
 * conditions:
 *
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
 * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
 * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 *
 * ----------------------
 *
 * This class is an openFrameworks wrapper for this technique:
 * Original Core Image filter converted by James George ( http://www.jamesgeorge.org/ )
 * for ofxProjectorBlend addon for openFrameworks ( http://www.openframeworks.cc )
 *
 * Originally used in the Infiniti MOI project for projector blending ( http://vimeo.com/14588336 )
 * Also used for Coke24 project with Hellicar and Lewis ( http://www.hellicarandlewis.com/2011/03/22/coke-24hr-music/ )
 * and Flightphase's University of Dayton interactive wall ( http://www.flightphase.com/main_wp/expanded-media/interactive-wall-at-ud )
 *
 *
 */