getsmoothP

On this page	* Variadic arguments * Examples
Context(s)	shading
Returns a modified surface position based on a smoothing function.

int  getsmoothP(vector &smoothP, vector ray_origin, ...)

Overwrites the smoothP variable with the modified surface position. This function is only meaningful for some primitive types (such as polygons).

vector  getsmoothP(...)

Uses the global variables Eye and I to fill in the ray origin and direction.

Variadic arguments

variadic-arguments

“style”, string

none

No smoothing.

shadow

Apply a smoothing function appropriate to elimination of the shadow terminator issue for polygons.

Examples

examples

shadow
fastshadow()
{
    vector        surfP;
    if (!getsmoothP(surfP, Eye, I))
        surfP = Ps;                // Set to the Ps (surface P) variable
    vector shad = trace(surfP, normalize(L), Time, "raystyle", "shadow");
    Cl *= ({1,1,1} - shad);
}