[PD] Mouse Control...

[dmotd]

oh and don't forget that this mailing list is archived, and this is actually a 
query that comes up once every few months.. you could probably answer all of 
your own questions with a few well targeted search terms.. 

http://puredata.info/community/lists/

On Tuesday 17 March 2009 00:05:39 dmotd wrote:
> hi simon and welcome to the pd community..
>
> it's a decent question and you will no doubt get a number of different
> responses..
>
> depending on your system you have a few options: gem, pdp or gridflow,
> which all cover the imaging section of your question. gem however is
> probably the most appropriate as it covers both the 3D and the interactive
> part in one. gem allows you to interact with image, video and GL primitives
> in a 3D space.. it also covers input and depending on how you require live
> imagary to be captured you have varying levels of control, for example
> there is [pix_blob], which describes the average mass (gravity) of movement
> in terms of X+Y (which sounds like what you're after), there is [pix_hit]
> which allows you to describe parts of the image grid which trigger when the
> input passes through, or there is [pix_dump] which outputs the incoming
> pixel grid as a list which you can process with your own math.
>
> as for your camera, it should be supported by gem, but DV support can be a
> bit sketchy on some platforms..
>
> gem is part of the pd-extended build which runs on many systems..
>
> this is a fairly broad answer to a broad question, i hope it helps..
>
> dmotd
>
> On Monday 16 March 2009 22:53:18 Simon Ball wrote:
> > Hi there
> >
> > I'm having trouble realising an idea. I've got the software running (mac
> > book pro) and managed to play with some of the examples, however I am new
> > to PD, so bare with me!
> >
> > I'm trying to generate a composition of images that float in 3D space. I
> > want the images or layers to move and rotate towards areas of a screen
> > where movement is detected. I don't need to track specific points of
> > motion, simply to judge where movement is taking place. I think this will
> > involve reading frames and analysing changes in pixels. Does that make
> > sense?
> >
> > I plan to use a mini DV camera to run this, on a high contrast
> > background, although I've seen a similar method of recording movement
> > with a webcam and processing, which worked pretty well. (
> > http://vimeo.com/1948430?pg=embed&sec= - tracks changes in pixels,
> > although I'm not sure how).
> >
> > I assume that this will involve some sort of trigonometry to move images
> > towards points where motion is detected, although I'm not sure how to
> > apply this in PD. Also, how to I generate a floating effect, much like
> > 'easing' does in animation software. And can this work with 3D, mapped
> > images in PD?
> >
> > I hope thats clear, if a little broad, let me know you need any further
> > info.
> >
> > Thanks in advance for any suggestions/solutions.
> >
> > Simon
> >
> > Simon Ball
>
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