Re: Feedback wanted: Autogap and mainpoints

[Grégoire Dooms <dooms info ucl ac be>]

Pontus Pihlgren wrote:

> Autograb can be on all the time, if you don't like it while moving the
> whole line, just press(and hold) the modification key to turn it of
>  
I think this is a good idea.

If autograb is that easy to switch on and off, I would advise to have a 
simpler behaviour for it than in my previous mail:
when it is on, any movement resulting in a line endpoint getting in the 
body (not a CP) of an object makes this object autograb the endpoint. 
This is the simplest behaviour I can think of.

In my previous mail, I was complaining about this autograb behaviour 
being too complicated. Now it can get quite simple.

If the user feels the autograbbing is not right, just press the modifier 
key et voila.

However I think this gets a little more complicated when it comes to 
implementing it: while the tool is dragging any object or line, it must 
remember the autograbbed line/objects and be able do undo/redo 
autograbbing these if the modifier key changes state. Dropping the line 
or object commits the autograbbing and the line gets connected to the 
object's mainpoint  or  lies in the body of the object ( depending on 
the autograbbing state ). In this schema, autograbbing applies to the 
selected set of  object/lines being moved and the objects/lines 
"touching" the selected set (with "touching" meaning a line endpoint is 
in the body of an object).

As a first step it could be done only when a single object/line is dragged.

There is just this little problem : a few modifier keys are already used 
and there are not a lot of them.
I lately used shift for handling arc resize in an other fashion. I think 
control is used for H/V  only  movement. 
Should we make these modifier behaviours configurable ?

--
Grégoire