uniform vec3 uWobbleAngle;
uniform float uGlassWidth;

out Vert {
	vec3 objectPoint;
	vec3 normalForCam;
} oVert;

mat3 rotateZ(float _angle) {
	return mat3(cos(_angle),-sin(_angle), 0.0,
                sin(_angle),cos(_angle), 0.0,
                0.0, 0.0, 1.0);
}

mat3 rotateX(float _angle) {
	return mat3(1.0, 0.0, 0.0,
                0.0, cos(_angle), -sin(_angle),
                0.0, sin(_angle), cos(_angle));
}

void main() 
{
	vec3 scaledPoint = P - (N * uGlassWidth);
	oVert.objectPoint = scaledPoint;
	oVert.objectPoint = rotateZ(uWobbleAngle.z) * oVert.objectPoint;
	oVert.objectPoint = rotateX(uWobbleAngle.x) * oVert.objectPoint;
	oVert.normalForCam = uTDMats[TDCameraIndex()].camForNormals * N;
	vec4 worldSpacePos = TDDeform(scaledPoint);
	gl_Position = TDWorldToProj(worldSpacePos);
}