Re: [zvtm-devel] VPath implementation of coordInside

[Emmanuel P. <emm...@in...>]

On 4 d=E9c. 07, at 17:46, Henrik Lindberg wrote:

> I mean, when there is a mouse move event, a timer is set.
> When the timer fires the pick is performed. If a new mouse move event
> occurs, the timer is updated.
>
> It is a lot more efficient to update a timer than to do a full pick =20=

> on every
> move.

Sure. A full pick on every move is not conceivable anyway.


> The effect is that the pick occurs as soon as the mouse is still.
>
> That is perhaps what you mean by a dwell time.

Yes, activation after some dwelling time typically happens when the =20
cursor stands still for a few hundred milliseconds.


> Or, is the pick so slow that you even a 'dwell' is a bad idea?

I think it could be ok. But I do not think this is a behavior most =20
ZVTM-based applications would expect and/or want. So I'd rather leave =20=

that as a customization on a per-application basis.

Emmanuel


>
> - henrik
>
> -----Original Message-----
> From: Emmanuel Pietriga [mailto:Emm...@lr...]
> Sent: tisdag 4 december 2007 15:05
> To: he...@ma...; zvt...@li...
> Subject: Re: [zvtm-devel] VPath implementation of coordInside
>
> You mean like a dwell time ?
>
> Emmanuel
>
> On 4 d=E9c. 07, at 14:26, Henrik Lindberg wrote:
>
>> Suggestion - you could also do the pick on mouse move after a delay.
>> Regards
>> - henrik
>>
>> -----Original Message-----
>> From: zvt...@li...
>> [mailto:zvt...@li...] On Behalf Of
>> Emmanuel
>> Pietriga
>> Sent: onsdag 28 november 2007 17:30
>> To: ja...@rv...; zvt...@li...
>> Subject: Re: [zvtm-devel] VPath implementation of coordInside
>>
>>
>> On 28 nov. 07, at 16:57, Jan Sanders wrote:
>>
>>> Hello All,
>>>
>>> I would like to use ZVTM and ZGRViewer. I use the SVG rendering
>>> pipeline
>>> to render the DOT output.
>>> The edges in a DOT graph are represented by ZVTM using the VPath
>>> object,
>>> which cannot be selected by the mouse AFAIK.
>>
>> It can.
>>
>>
>>> I looked at the source of VPath and the method
>>>
>>> public boolean coordInside(int x,int y,int camIndex){
>>>         return false;
>>>     }
>>>
>>> does not seem to be implemented. Is there a technical reason for =20
>>> this
>>> being so?
>>
>> Yes: performance. We don't want to do general path picking on each
>> mouse move.
>>
>> So you have to call the picking method explicitly, for instance when
>> a mouse button is pressed. See [1].
>>
>> [1] http://zvtm.sourceforge.net/apidocs/com/xerox/VTM/engine/
>> VCursor.html#getIntersectingPaths(com.xerox.VTM.engine.Camera,%20int)
>>
>> Hope this helps,
>> Emmanuel
>>
>>
>>
>>> As I understand it the VPath object is redered using
>>> java.awt.geom.GeneralPath. This is capable of detecting a
>>> "coordInside"
>>> using one of three contains(*) methods.
>>>
>>> Any help will be appreciated.
>>>
>>>
>>> cheers
>>>
>>>
>>> Jan Sanders
>>>
>>> --------------------------------------------------------------------=20=

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>>
>> --
>> Emmanuel Pietriga
>> INRIA Futurs - Projet In Situ    tel : +33 1 69 15 34 66
>> Bat 490, Universit=E9 Paris-Sud    fax : +33 1 69 15 65 86
>> 91405 ORSAY Cedex FRANCE     http://www.lri.fr/~pietriga
>>
>>
>>
>>
>> ---------------------------------------------------------------------=20=

>> -
>> ---
>> SF.Net email is sponsored by: The Future of Linux Business White =20
>> Paper
>> from Novell.  =46rom the desktop to the data center, Linux is going
>> mainstream.  Let it simplify your IT future.
>> http://altfarm.mediaplex.com/ad/ck/8857-50307-18918-4
>> _______________________________________________
>> zvtm-devel mailing list
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>>
>> ---------------------------------------------------------------------=20=

>> -
>> ---
>> SF.Net email is sponsored by: The Future of Linux Business White =20
>> Paper
>> from Novell.  =46rom the desktop to the data center, Linux is going
>> mainstream.  Let it simplify your IT future.
>> http://altfarm.mediaplex.com/ad/ck/8857-50307-18918-4
>> _______________________________________________
>> zvtm-devel mailing list
>> zvt...@li...
>> https://lists.sourceforge.net/lists/listinfo/zvtm-devel
>
> --
> Emmanuel Pietriga
> INRIA Futurs - Projet In Situ    tel : +33 1 69 15 34 66
> Bat 490, Universit=E9 Paris-Sud    fax : +33 1 69 15 65 86
> 91405 ORSAY Cedex FRANCE     http://www.lri.fr/~pietriga
>
>
>

--
Emmanuel Pietriga
INRIA Futurs - Projet In Situ    tel : +33 1 69 15 34 66
Bat 490, Universit=E9 Paris-Sud    fax : +33 1 69 15 65 86
91405 ORSAY Cedex FRANCE     http://www.lri.fr/~pietriga