Spout_OSL_displacement

shader
spout(
    float s = 0
		[[
		int lockgeom = 0,
		string widget = "null",
		]],
    float t = 0
		[[
		int lockgeom = 0,
		string widget = "null",
		]],
	float curvy = 1,
	int   invert = 1,
	output float resultF = 0)
{
//resultF = pow(t, curvy );
resultF = (sin((1 - t) * 6.282) + 1)/2;
if(invert == 1)
	resultF = 1 - resultF;
}