skyvat

I'm trying to re-create an effect I created for a dance company. I had initially done it as a pre-rendered movie in After Effects, but now I'm researching if it can be implemented in realtime.

I've enclosed an image that shows the effect. The rings (puddles?) move around the screen while the dancers simulate moving the puddles with the poles.

Right now I'm less concerned with the live-tracking aspect than with making the same objects in Jitter. The patch (hacked out of the gl.sketch helpfile) creates the shape - but in the original work the points around the circle undulated a bit in distance from the center. I'm wondering if there's a way to vary or distort the geometry of the framecircles independently to get this result.

Does Sketch have a way of distorting shapes directly? Any advice on what direction to take?

I'm trying to re-create an effect I created for a dance company.  I had initially done it as a pre-rendered movie in After Effects, but now I'm researching if it can be implemented in realtime.

I've enclosed an image that shows the effect.  The rings (puddles?) move around the screen while the dancers simulate moving the puddles with the poles.

Right now I'm less concerned with the live-tracking aspect than with making the same objects in Jitter.  The patch (hacked out of the gl.sketch helpfile) creates the shape - but in the original work the points around the circle undulated a bit in distance from the center.  I'm wondering if there's a way to vary or distort the geometry of the framecircles independently to get this result.

Does Sketch have a way of distorting shapes directly?  Any advice on what direction to take?

jit-gl-sketch-undulation-or-distortion-2

> I'm wondering if there's a way to vary or distort the geometry of the framecircles independently to get this result.

No, but it would be strightforward to build the circles yourself and

manipulate them as you wish. Use either jit.gl.mesh or jit.gl.sketch

No, but it would be strightforward to build the circles yourself and
manipulate them as you wish.  Use either jit.gl.mesh or jit.gl.sketch
with

glbegin line_loop
glvertex x y z
...
glend

Heh - Missed that little "upload" button over there...

i've also just been told the patch wasn't running correctly/clearly on open - here's a better version.

jit.gl.sketch undulation or distortion