Re: simple rotate

[Lars Clausen <lrclause cs uiuc edu>]

On Sun, 24 Nov 2002, Martin Hans wrote:
> On Sunday 24 November 2002 03:41, Lars Clausen wrote:
>> On Sun, 24 Nov 2002, Martin Hans wrote:
>> > One other idea: How about having a version of the zig-zag line that is
>> > rotated 90 degrees so that we'd get a down-left-down behaviour instead
>> > of the current left-down-left, which is a bad choice in about half of
>> > the cases.
>>
>> I have code in the CVS that will do this somewhat intelligently at
>> object creation time, and there's a simple way to extend it to all.
>>
>> The Box and Ellipse objects sets up allowable directions for each
>> connection point (in _update_data).  The Zigzagline, when created, looks
>> at those directions and makes itself either down-left-down or
>> left-down-left according to which are admissible.  To extend this to
>> post-creation movement, we need to make sure that midpoints stay where
>> they are.  My idea is to have it have one more segment when going
>> horizontal at the end, and one less when going vertical.  That way only
>> one midpoint will be affected.
> Just tried it out and it seems to work fine. I would'nt mind making those
> changes to shapes as well if you could point me to the file where shapes
> are loaded.

Thank you much!  The shapes are defined in objects/custom/custom_object.c
and related files.

> Determining the allowed directions automatically should work reliably at
> least if the connection points are on the border. I'll try to think about
> how to do that.

Generally, yes.  Some shapes might be too strange, but that's ok.  If we
get the majority, we've come a long way.

-Lars

-- 
Lars Clausen (http://shasta.cs.uiuc.edu/~lrclause)| Hårdgrim of Numenor
"I do not agree with a word that you say, but I   |----------------------------
will defend to the death your right to say it."   | Where are we going, and
    --Evelyn Beatrice Hall paraphrasing Voltaire  | what's with the handbasket?