//
//  Shader.vsh
//  Basic iOS Game
//
//  Created by Tyler Camp on 2/8/11.
//  Copyright __MyCompanyName__ 2011. All rights reserved.
//

#define sqr(x) ((x)*(x))

attribute vec4 position;
attribute vec4 color;

varying vec4 colorVarying;

uniform float translate;
uniform float rotate;

void main()
{
    gl_Position = position;

    //  Rotative
    float fRelativeAngle;
    float fDistance;
    fRelativeAngle = atan(gl_Position.y, gl_Position.x);
    //if (fRelativeAngle < 0.0) fRelativeAngle += 360.0;
    fDistance = sqrt(sqr(gl_Position.x) + sqr(gl_Position.y));

    gl_Position.x += cos (fRelativeAngle+rotate)*fDistance;
    gl_Position.y += sin (fRelativeAngle+rotate)*fDistance;

    //  Translative
    gl_Position.y += sin(translate) / 2.0;

    colorVarying = color;
}