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/****************************************************************************
* MeshLab o o *
* An extendible mesh processor o o *
* _ O _ *
* Copyright(C) 2005, 2009 \/)\/ *
* Visual Computing Lab /\/| *
* ISTI - Italian National Research Council | *
* \ *
* All rights reserved. *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This program 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 General Public License (http://www.gnu.org/licenses/gpl.txt) *
* for more details. *
* *
****************************************************************************/
uniform vec3 DiffuseColor;
uniform vec3 PhongColor;
uniform float Edge;
uniform float Phong;
varying vec3 Normal;
varying vec3 LightDir;
uniform float Fuzz;
void main (void)
{
vec3 color = DiffuseColor;
float f = dot(LightDir,Normal);
if (f < Edge+Fuzz) {
float frac=clamp((f-Edge)/Fuzz, 0.0, 1.0);
color = mix(vec3(0.0), DiffuseColor, frac);
} else {
float frac=clamp((f-Phong)/Fuzz, 0.0, 1.0);
color = mix(DiffuseColor, PhongColor, frac);
}
gl_FragColor = vec4(color, 1.0);
}
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