Path: utzoo!utgpu!water!watmath!clyde!att!osu-cis!tut.cis.ohio-state.edu!marvel
From: marvel@tut.cis.ohio-state.edu (Howard P. Marvel)
Newsgroups: comp.sys.mac.hypercard
Subject: Scaling pictures in Hypercard
Message-ID: <16062@tut.cis.ohio-state.edu>
Date: 22 Jun 88 05:00:28 GMT
Organization: Ohio State Computer & Info Science
Lines: 24


I would like to be able to re-size portions of the hypercard screen
that are drawn algorithmically.  That is, it would be nice to be able
to somehow shift the origin of a drawing around and double or halve
the coordinates of the lines drawn.  Now I can do that by using
variables in my drag instructions, but there appears to be a way that
I can change a hypercard property to do this more easily.

Why do I suspect this?  Because of a baffling problem.  I have
apparently reset such a property in a stack I am working on.  My
original drawings looked fine, but now the lines are too long (same
scripts re-executed).  Here is a more precise problem report.  Choose
the line tool.  Suppose that put the mouseLoc reports (apparently
correctly) that the mouse is at x,y.  Now move the mouse to 
x+dx, y+dy, reported with put the mouseLoc.  Now the weird part.
Issue 
   drag from x,y to x+dx,y+dy
The result?  A line from x-dx,y-dy to x+dx,y+dy.

As a result, all the drawings in my stack that used to look fine now
run off the screen.  What property have I reset inadvertently?  And
how might I have done the deed?

Thanks in advance.