Camelia, the Perl 6 bug

IRC log for #openframeworks, 2013-09-12

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13:49 Marcela Hello, friends. i am absolutely new to openFrameorks. At work, we are trying to record a 3D video captured with a kinect. We are running the kinect example that is included in openframeworks and it goes well. I am thinking to write to disk the 640x480 array, but it seems to be crazy... do you have any idea? sorry if i am asking where doesnt correspond... is just i dont know where to. Thanks  a lot in advance
13:50 denandreas have you tried searching the forums?
13:51 denandreas think this thread should have some info on what you'd need to do: http://forum.openframeworks​.cc/index.php?topic=9840.0
13:56 Marcela denandreas thanks a lot. I am going to have a look. it is a starting point. Thanks again! :D
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14:31 jacres Marcela: OpenNI has recording and playback ability - it can be super useful for testing when you don't want to stand and "act" in front of the Kinect every 5 minutes :)
14:33 Marcela hello jacrees. Thanks a lot for answering. I am looking for some open source utility/project/... because we have this restriction at work. If i cant make this work, i will remember your advice... ;)
14:34 jacres Marcela: oh, just realized, ofxKinect has a recorder and playback class
14:34 jacres Marcela: have never used it, but I'm pretty sure it's there.. check ofTheo/ofxKinect on github
14:35 Marcela jacres :O  i will give it a try!
14:36 jacres Marcela: sorry, I often speak too soon... here's the kinectRecorder: https://github.com/kureta/ofxKinectR​ecorder/blob/master/src/testApp.cpp
14:36 jacres (it's not part of ofxKinect)
14:36 denandreas btw, does anybody here have some tips on how to go about doing a "morphing blob/circle"?
14:36 denandreas think i just need a point in the right direction at the moment haha
14:36 jacres denandreas: what are you trying to achieve?
14:37 denandreas think of it as cell-splitting
14:37 denandreas but morphing in the way olive oil builds up into a puddle when you pour it on a surface
14:37 jacres how many will you have? and what sort of look do you need?
14:37 jacres (ie. do you need fine control over texturing)?
14:38 denandreas the idea is to have one large main cell which will divide into smaller cells
14:38 denandreas no texturing, just filled shapes
14:38 jacres i did something similar in webgl here: http://www.theplayground.cc/play/metaballs/
14:39 jacres but i think you could achieve what you're looking for with 2d distance fields
14:39 denandreas yeah, think so too
14:39 jacres something like this: http://www.geisswerks.com/ryan/BLOBS/blobs.html
14:40 jacres you can if you just need 1 color (flat) you can have a series of points, each point can represent a blob
14:40 jacres and a strength value associated with each point
14:41 denandreas thanks for the links! really helpful
14:44 jacres denandreas: http://www.openprocessing.org/sketch/10275 is a good example of this
14:45 jacres you can do this in grayscale and then run a threshold filter on the whole thing to make things above a certain brightness white or whatever color and black (or transparent to show your background)
14:46 jacres denandreas: thre's the brute force way, or you can do marching squares to get the actual geometry (a lot more work)
14:47 denandreas jacres: ah, yeah i read up a little bit about marching squares (and cubes) but at the moment i'm satisfied with something simpler, so just brute forcing it would be fine
14:48 jacres denandreas: last link ;) here's a good glsl shader that does what i think you want
14:48 jacres yeah i think so, too... it's simpler and if you have the performance to handle it, it'll work great
14:49 jacres the only downside is that you have to process every pixel and find the distance from each circle centre to calculate the influence each has (how the should blob together)... so a shader will be much faster since it'll do tons of pixels in parallel
14:51 denandreas think it'll be ok though, will just need to render a maximum of maybe 4 or 8 shapes
14:51 jacres yeah for sure, you'll be fine.. it'll be pretty fast through a shader
14:52 denandreas i really need to buy some books on shaders...
14:53 jacres they're fun, and you can start slow with them - can do a lot with a little knowledge with shaders, which makes them great
14:54 denandreas yeah, i started doing some simple shading stuff for a little particle-experiment a couple of weeks ago, and well things look so nice with so little effort
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15:23 torlanco hello, anyone know where I can find openframeworks developers?
15:40 admsyn torlanco: hi there
15:40 admsyn you mean for contract work?
15:43 admsyn if that's the case, http://www.creativeapplications.net/add-job/ might be your best bet
15:43 admsyn there's also the oF opportunities board
15:45 torlanco nice! thanks a lot
15:53 admsyn np
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