class interface DRAWABLE_LINE
creation
make
feature(s) from DRAWABLE_LINE
-- Set line definition
set_start (pt: POINT)
-- Set line starting point.
require
valid_point: pt /= Void
set_final (pt: POINT)
-- Set line ending point (the line will be
-- drawn up to but not including this point).
require
valid_point: pt /= Void
end of DRAWABLE_LINE