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[jitter] Re: tracking and video projection

Wesley Smith wesley.hoke at gmail.com
Fri Jan 4 21:52:02 MST 2008


I would use jit.gl.videoplane textured with your circle, although if
it's a simple circle, why not draw it with opengl?  You can use
jit.gl.videoplane @transform_reset 2 to get normalized [-1,1]
coordinates across the window and scale your 2 floats appropriately to
position the videoplane, which you'll probably want to scale dow
n.
wes

On Jan 4, 2008 5:59 PM, thi <goodmood at voila.fr> wrote:
> I really want to thank you for your repply but the help patch  of the jt.gl.videoplane is too much complicated for me at the moment.
> I don't want to draw, but just want to make a static image created    in illustrator (a simple cercle) to follow the object position. the position defined by my two float have to correspond to the middle point of my image.
> sorry for my basic questions, don't know if this forum is for beginners:
> but, does the position of a static image have to be defined like the video's one? with the positions of the top right angle and the left bottom one? i'm afraid about that task: how to calculate the position of my image with my only two floats? i have only one day left to get rid of this patch and didn't have enough time before to study max msp.. `
> thanks again
>
>
>
>
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