uniform vec3 LightPosition;

varying float LightIntensity;
varying vec2  ST;

void main()
{
	vec3 ECposition = vec3( gl_ModelViewMatrix * gl_Vertex );
	vec3 tnorm      = normalize( gl_NormalMatrix * gl_Normal );
	vec3 lightVec   = normalize( LightPosition - ECposition );

	LightIntensity  = abs( dot(lightVec, tnorm) );
	if( LightIntensity < .2 )
		LightIntensity = .2;

	ST              = 2. * ( gl_MultiTexCoord0.st - 0.5 );	// [-1.,+1.]
	gl_Position     = gl_ModelViewProjectionMatrix * gl_Vertex;
}