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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 HatchDirection;
uniform float Lightness;
varying vec3 ObjPos;
varying float V;
varying float LightIntensity;
void main()
{
ObjPos = vec3(gl_Vertex) * 0.2;
vec3 pos = vec3(gl_ModelViewMatrix * gl_Vertex);
vec3 tnorm = normalize(gl_NormalMatrix * gl_Normal);
//vec3 lightVec = normalize(LightPosition - pos);
vec3 lightVec = vec3(gl_LightSource[0].position);
float grey = Lightness*dot (vec4(.333,.333,.333,0),gl_Color);
LightIntensity = max(grey * dot(lightVec, tnorm), 0.0);
//LightIntensity = max(dot(lightVec, tnorm), 0.0);
//V = gl_MultiTexCoord0.t; // try .s for vertical stripes
V =dot(vec3(gl_Vertex),HatchDirection);
gl_Position = ftransform();
// gl_FrontColor=gl_Color;
}
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