trilerp function
Implementation
double trilerp(double v1, double v2, double v3, double v4, double v5, double v6,
double v7, double v8, double x, double y, double z) =>
lerp(blerp(v1, v2, v3, v4, x, y), blerp(v5, v6, v7, v8, x, y), z);
double trilerp(double v1, double v2, double v3, double v4, double v5, double v6,
double v7, double v8, double x, double y, double z) =>
lerp(blerp(v1, v2, v3, v4, x, y), blerp(v5, v6, v7, v8, x, y), z);