#version 330 compatibility

uniform float	uTime;
uniform float	uSwimAmp;
uniform float	uSwimFreq;

out  vec2  	vST;		// texture coords
out  vec3  	vN;		// normal vector
out  vec3  	vL;		// vector from point to light
out  vec3  	vE;		// vector from point to eye

const vec3 	LIGHTPOS 	= vec3(  10., 10., 5. );
const float 	PI 		= 3.14159265;
const float	TWOPI 		= 2.*PI;
const float	LENGTHZ 	= 5.0;

void
main( )
{ 
	vST = gl_MultiTexCoord0.st;
	vec3 vert = gl_Vertex.xyz;
	vert.x += ?????


	vec4 ECposition = gl_ModelViewMatrix * vec4( vert, 1. );
	vN = normalize( gl_NormalMatrix * gl_Normal );	// normal vector
	vL = LIGHTPOS - ECposition.xyz;			// vector from the point to the light position
	vE = vec3( 0., 0., 0. ) - ECposition.xyz;	// vector from the point to the eye position 
	gl_Position = gl_ModelViewProjectionMatrix * vec4( vert, 1. );
}