Compute E,F,G, e,f,g, K, H, k1, k2 for graph-type surfaces, given the world-space probe point.
The graph viewer uses world coordinates (x, y=z(x,y), z=y), so the underlying graph coordinates are: x_graph = X_world y_graph = Z_world
Compute E,F,G, e,f,g, K, H, k1, k2 for graph-type surfaces, given the world-space probe point.
The graph viewer uses world coordinates (x, y=z(x,y), z=y), so the underlying graph coordinates are: x_graph = X_world y_graph = Z_world