Path: utzoo!attcan!uunet!tut.cis.ohio-state.edu!pt.cs.cmu.edu!andrew.cmu.edu!ba0k+
From: ba0k+@andrew.cmu.edu (Brian Patrick Arnold)
Newsgroups: comp.sys.mac.programmer
Subject: Arrowhead line drawing
Message-ID: <ca1wiqW00WBLM1rkUA@andrew.cmu.edu>
Date: 21 Mar 90 18:45:10 GMT
Organization: Mechanical Engineering, Carnegie Mellon, Pittsburgh, PA
Lines: 19


Hello there,

I have a program written using MacApp that draws flush "link" arrows
between "nodes" in a diagram.  I want the links to be recognized as
MacDraw-like arrows (or grouped rotatable objects) when pasted into
MacDraw - presently when I paste, I get a line and a polygon separately
instead.  Is there a PicComment or PICT tweak I can add to my link
drawer so that MacDraw is more happy with it as an arrow or am I stuck?

While I've got your attention, my algorithm for drawing flush links uses
a bit too much trig and it shouldn't need to use any.  If anybody has
fast arrow drawing code, I'd appreciate getting a copy.  My arrow drawer
must be able to draw between centers of rectangles but be flush against
rectangles at each endpoint.

Please respond to me directly.  Thanks.

- Brian