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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. *
* *
****************************************************************************/
varying vec3 pos;
uniform vec3 StripeDir;
uniform float Fuzz;
uniform float Width;//=0.5;
uniform float Scale;//=1.0;
void main (void)
{
vec4 color;
float scalar_pos=dot(Scale*StripeDir,pos);
float scaled_pos=fract(scalar_pos*10.0);
color = gl_Color;
float frac1 = clamp(scaled_pos / Fuzz, 0.0, 1.0);
float frac2 = clamp((scaled_pos - Width) / Fuzz, 0.0, 1.0);
frac1 = frac1 * (1.0 - frac2);
frac1 = frac1 * frac1 * (3.0 - (2.0 * frac1));
color.a=mix(0.0,1.0,frac1);
gl_FragColor = color;
}
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