getBarycoords

Computes the barycentric * coordinates of the given point @p.

The point @p must lie on the same plane as the triangle @t; if the point is not coplanar, the result of this function is undefined.

If we place the origin in the coordinates of the triangle's A point, the barycentric coordinates are u, which is on the AC vector; and v which is on the AB vector:

The returned #graphene_vec2_t contains the following values, in order:

• res.x = u

• res.y = v

Parameters