#version 120
//
// cylinder.vert
//
invariant gl_Position;
attribute vec2 texture;
uniform mat4 projectionMatrix;
varying vec3 diffuseColor;
uniform vec3 lightDirection;
uniform vec3 lightColor;
varying vec2 t;
 
void main(void)
{
  float th = 6.283185 * texture.s;
  vec3 position = vec3(cos(th), texture.t * 2.0 - 1.0, sin(th));
  vec3 normal = vec3(position.x, 0, position.z);

  t = texture * 16.0;
  diffuseColor = vec3(dot(lightDirection, normal)) * lightColor;
  gl_Position = projectionMatrix * vec4(position, 1.0);
}