package GLOBE_3D.Portals is
-- Methods provided for clipping through screen rectangles
procedure Intersect (A, B : Rectangle; C : out Rectangle; non_empty : out Boolean);
procedure Find_bounding_box (
o : Object_3D'Class;
face : Positive;
b : out Rectangle;
success : out Boolean
);
procedure Draw_boundary (main, clip : Rectangle);
end GLOBE_3D.Portals;