Point Clouds in TouchDesigner099 Part3 - Napoleon dissolved
ฝัง
- เผยแพร่เมื่อ 6 พ.ย. 2019
- using a model of Napoleon downloaded from threedscans.com/nouveau-musee-... we will look at converting obj models to point clouds, saving them out, using normals information and how to create a simple particle like effect with nothing else but TOPs.
derivative.ca/community-post/...
3 Years later and this video is still the best resource on animating point clouds I've found on youtube. Thank you!!!
Thank you very much! :)
Thank you Markus, its wonderful learning ! You are the best!
This is amazingly good. Your clear explanations really helped to demystify doing calculations in tops. Very inspiring!
wonderful teaching Markus. Your cat is lovely too :)
Haha - yeah - Milo doesn't like me not paying attention to him...
Thank you so much for this tutorial. Now I have the next level.
Thank you! A lot of interesting tricks here
One of the Coolest TD tutorials ever!. Thank you.
was having difficulty with this on version2019.37030. moviefile in had a new section called EXR where you need to define the first layer as RGB or tx ty tz. couldn't get it to work without the alpha being active in pointFilein and in GLSL changing it to hold in "input extend mode UV" didn't work unless I disabled Alpha in the common tab of GLSL
Thanks Alberto! Had me stumped.
@@salemapol in the moviefileIn node there should be a plus and minus button to add/remove additional inputs
tnx man, you saved me tons of time :)
Awesome! Was thinking about giving up already
Hello Alberto, I'm giving up on this. Do you have the project file? I have problems in the GLSL part, changing it to "hold" is not sufficient since there is a new TOP Analyze, that maybe is the element that screws things up. Can anybody help?
Thank You! All series very interesting, really cool ..
Thanks for explaining with such detail!
omg i was using the version of Yeataro and thanks for boths for make that possible and explain everything!
i love this, thanks you so much for the detailed workshop! I was wondering how to add some audio reactivity to this
Happy it's useful! For this particular example I guess controlling the Noise TOPs parameters with audio levels would be a start.
Even on my computer it works now amazing thx to update. Question, would it be very hard to get a sphere and noise up points inside this adjustable size invisible sphere only(linked to live position of my hand read by kinect) for instance? Or be able to move that halfway division left to right or up and down to get this statue to gradually reconstitute itself over time , or fully disapear aswell. Lovely as it is but hard to incoporate in a show because of this halfway limit. so cool, still!
Geniaaal ! muchas gracias!
Great tutorial, thanks!
Thank you!
Hi I’m starting to follow this tutorial but I was wondering if this could be audio controlled via a Audio device in? Thank you for this 😁
Hi Markus
thank you ever so much for your tutorial! would you please advise how can I export point-cloud in touch designer in order to let say mesh it in Houdini or Rhino?
Great tutorial, thanks. I'm having a problem, when I translate the instances using feedback, the instances move away from each other rather than all in the same direction. Some move in the + direction and some in the - I've tried anything I could think of but didn't get anywhere
is there anyway to turn the point cloud back into a mesh?
Who needs a renderer .. just SOP to TOP and call it a day :))
Hello Markus, can I ask you how can I do some reactive masks with it? I need this particles has some collisions. How would you do? Thank you in advanced
Great tute. Did you ever figure out why they're spawning all over the place?
Great tutorial - very useful, particularly seeing how you approach things when they don't work for you right away.
However (and this isn't a ding on you), this technique points out something that I find very frustrating about TD - just because you CAN do something a certain way, doesn't mean it's the most natural or 'correct' way to do it. While it's cool and clever to use TOPs to manipulate and animate points, I'd much rather work with particle system controls or SOPs to manipulate points, since that's a more natural way to manipulate points. For everything you've done, wouldn't it make more sense to import the points from an obj, throw away the polys, and continue to work in SOPs to do everything (if you could)?
Hi Mark, thanks! happy you liked it. If it would be possible, the SOP Workflow would be the more natural approach to this. Choosing TOPs just gives us quick access to exploration of pointclouds with a number of points that's just not possible to process in real-time with our current SOP architecture. Not the last word on it - much more to come.
Hey Markus! Thanks a lot for this tutorial! I've leveled up! I know it was difficult to find the solution to the last noise loop, but I've found that it works only on the first two loops and then instead of looping again from 600 it gets stuck between 0 and 1 and that's why it looks like white noise. Does it happen the same to you? I couldn't check the second loop in your video. Thanks again, master!
Well... yes, I downloaded your project and happens exactly the same. Any idea of what may be happening?
Hi this is a really great tutorial, thanks for this Markus :) I'm trying to do it with point clouds and objs which I've created from photogrammetry but am having difficulty with anything other than the Napoleon model at the moment. I always seem to get the error in the GEO saying that all OPs must have the same number of instances.
I had the same issue, you have to hit "pulse" in the feedback to get it working. Somehow it keeps the data of the previous model until you hit pulse
@@marahd.914 Thanks, yeah there are a few different feedbacks in the network, I must have missed pulsing the important one :)
You're welcome 😊 did you get a good result at the end? I have tried with many models but none of them was as good as Napleon after exporting the exr :(
@@marahd.914 No I didn't get a good result yet either. I've left it as something to look into when I play with point clouds again. They are quite time consuming to experiment with :) I think that rather than using a model, using point cloud scans seemed to work ok but I don't have any good scans to play with.
Hi Markus, I'm amazed by your know-how, I'm just getting started with TD and you're a massive help. One question regarding this network: is there a way to add colour to the noise/dissolving particles (ideally, using our point cloud data)? I tried a few different CHOPs with r g b channels as the colour OP for geo instancing but always end up with the error "all OPs must generate the same number of instances (have the same length)" so I'm clearly missing some crucial piece of info as to why this doesn't work. Excuse the noob question :)
Hi Catrina, happy this tutorial is helpful. The warnin gis pretty much spot on - for instancing, your data all must have the same amount of data points. In the Napoleon example, the pointcloud texture that is being used has a resolution of 703 x 705 pixels resulting in a total of 495615 pixels. If you want to use a CHOP, the the CHOP would have to have the same amount of samples: 495615
@@MarkusHeckmann Hi! I'm struggling with a very similar thing, maybe you can help. In my case I want to add the RGBA data to the my Pointfile, however when I import the obj, only the mesh without the texture is added. So I use the Material Sop to add the texture that came with the obj. When I try to get Color RGB from the SoptoTop, it gives me an error: "Unknown Attribute cd". Do you know how to solve this?
Thanks Markus! As a first step wouldn't it be easier to do some sort of poly reduction?
The Pointcloud TOP now supports a range of geometry file formats, so the whole conversion is not necessary anymore.
HI! The tutorial is great. I only ask you one thing: why when I change the value of constant1 the image stays in the center and "stretch" instead of moving?
did you fiure that out? same here. edit > I changed the constant to add also, gives the correct result, but not sure if it will break on next step yet.
Why does it work with the same Model of Napoleon, but when I try it with one of my own Models it shows that the soptoChop doesn’t find Normals and UVs ?
Hey Markus, thanks so much for the tutorial. Unfortunately I'm stuck at the first step importing the Napoleon .obj file, when I select 'View as points' I do not seer anything in my pointFileIn TOP besides a single small point. Any ideas what's wrong?
Hey, yes - currently the alpha channel is interpreted as an active channel - so with the obj file only containing 3 channels, you would have to set the Alpha Channel on the PointfileIn TOP to "One".
Hi Markus, fantastic tutorial, its my favorite thing to watch of an evening :) I am just getting stuck trying to find the colour of the point cloud .ply file I have. If I use a select to grab rgb channels, the viewer shows it as pure white. any ideas greatly appreciated. Thanks again
Are the pixel values all 1 as well or is the color rnge just outsise 0-1? You can use the new TOP viewer mode "Normalize Split" (keyboardkey 'n' on the active viewer...) to check on this.
Markus Heckmann thanks so my for your reply. I got it working in the end, using normalise split to find the right channels. Much appreciated
Hi Markus, amazing Tutorial to begin with, love this technique.However I try to wrap my head around how one would go about defining obstacles for the particle flow, like collisions...
Also Attraction would be interesting.. Do you have an ideas?
Hello, I have to do something like this. Have you find the solution? Thank you
Thank you so much! I have a seashell obj that returns a point cloud that is centered, but way too big. I figured that the glsl centering wouldn't effect the output but it returns a weird pointcloud that looks like a firework instead of a seashell, any clue how to fix this? or is there a way to resize the pointcloud without recentering? Thanks
Hi Molly, the first thing that comes to mind is what i'm explaining at 24:40 about the Parameter "Input Extend Mode UV" on the glsl1 TOP. The Parameter has to be set to "Hold" for the values to be read out correctly by the glsl TOP. If that doesn't work, you could also use the Math TOP to scale the rgb channels of the pointcloud and by that reduce the size.
@@MarkusHeckmann ah yes! that's the trick! thank you so much!!!
I'm curious about the UV node that went unused in this tutorial. Can it be used here for something like texture mapping or vertex shading? I was wondering if there is a glsl solution to applying color from the obj (or it's associated texture) to the instance geometry.
Wonderful tutorial, thank you! I'm using a different model from that website, and after doing the pointfileinTOP around 15:00, it doesn't look right at all... just a mess of points that don't resemble the model. But when I switch to napoleon, everything's fine. Any ideas?
Which model and TouchDesigner build are you using?
@@MarkusHeckmann Using the lifemask model (threedscans.com/lifemask/goethe-lifemask/) on build 2019.33020
@@jaminkidd6285 I used the same model. It looks weird but it works at the end...
@@jaminkidd6285 maybe the issue is the rotation of the model?
wow what a great tut. clearly explained....(f#cking complicated for a noob with 1 month experience) but i managed to got it work,,😁 again tnxs for this. lots to play with for the next days
Hello Markus, I really appreciate your tutorial. I am getting stuck at 30:00 when you turn on instancing on the geo component and drag the null_pos component because after setting the translate x,y,z to r,g,b respectively the object disappears. Any guidance here would be greatly appreciated, thank you.
Hi Daniel, maybe post an image in the Forum - would be easier to see what's happening. I have to caution you that so much has changed since last November but I haven't gotten to rerecording this tutorial.
You could also reference the file in the git repository to see if that is working for you.
the same problem!!! When I put Hold in input extend mode of glsl the object disappear!!
the same for me@@diesproject
Hello Markus, thanks a lot for this tutorial. I tried to open 3 differents .obj files from this website but I always get an error from the pointfileinTOP: Failed to open file.
Any ideas where this error could come from? I have the last build
Hi!
Which files did you try? Were you able to open them via the File In SOP?
@@MarkusHeckmann I tried Napoleon, and two other models from the website you provided. Yes, they all worked with the FileInSOP.
unrelated to this, but I can't use the transformation handles in the geometry viewer with the last experimental build
Hi @@anemotiona - do you mind posting this to forum.derivative.ca and mention your system as well (computer make, OS, TouchDesigner build, videocard, driver version etc) - we can try to solve it from there!
Hi Harold, can you try loading the file from a different folder location and also try loading the exr I saved out from it which you can get from here: github.com/wuestenarchitekten/workshops/tree/master/Pointclouds in TouchDesigner/Napoleon
Hi Markus, great tutorials! But I'm stuck at 25.30 on Napoleon: on glsl page in glsl TOP when I switch the input extend mode UV to "hold", instead of seeing the correct Napoleon the image totally disappears.
I can't understand if I miss anything or what else... the info DAT tells me everything is compiled successfully. Any idea?
Thank you!
When switching the viewer to "Normalized Split" mode, what is the value range for each color channel?
@@MarkusHeckmann (After //center everything and before //scale everything) setting "hold" I got these values:
R -156.24 . 156.24
G -250.63 : 250.63
B -308.23 : 308.23
A 0 . 0
@@mauroromanzi It might be just to large for the camera to be seen? Not sure, but you can also try to compare against the file here: github.com/wuestenarchitekten/workshops/tree/master/Pointclouds in TouchDesigner/Napoleon
@@MarkusHeckmann the link returns "404 not found", but I've found the file named "Pointclouds in TouchDesigner/Napoleon/napoleon.toe" here:
github.com/wuestenarchitekten/workshops/commit/33e7ee7e07cb800f2d90e145eb76b3172168d173
I guess it's the right one (?)
It seems to me that the image not displaying as points in the glsl TOP inside "normalize" COMP is a bug, because I see the same behavior in your file I've downloaded (but not in the video tutorial, where the image is correctly displayed). Maybe it could be the build? I'm on experimental 33840.
Anyway going on with the tutorial it seems everything is working fine, except for the direction of the dissolving "sand" which is going mostly up than on the left (but I'm sure I did something wrong),
and for the values inside the subtract TOP: instead of stopping at 404.09 there is a super fast oscillation around -0.0000 "and something" and 0.0000 "and something" (but before this I had the same issue of the 404.09 stop, so probably I made something wrong again).
Anyway I'm re-doing everything from the beginning, so I can check better everything...
Thank you! Wonderful tutorial :)
@@mauroromanzi you can
solve this problem, Go to Pointfilein Common edit Pixel Format to 32-bit float(RGB)
hi Markus,
just checked the tutorial and the files and i think the last step with the countdown is broken in newer build.2019.36790. It doesn't restart the counting at 600 again, but keeps going into minus. happens wit both, following tutorial and your github version.
I ran into a similar issue in 42700. I followed step-by-step, but the countdown reaches 0 and then restarts at a number less than 600. Each time it reaches 0 it restarts at a lower number, until it rapidly oscillates near 0.
Using the latest build here. I get a warning on the sopto1 that N and "UV" are unknown values. Can you help out with this? Btw. the tutorial is brilliant. Thank you for all the hard work and putting it together.
Hm - at 4:25 I'm adding a Texture SOP and also the normals are created on the FileIn SOP with the parameter "Compute Normals if None Exist". If you middle mouse click onto the last SOP before the SopTo CHOP, what attributes does it show as available?
@@MarkusHeckmann In the "info" section are 2 Vertex Attributes N (3) and UV (3). Am I missing something here?
@@morenobelic2189 Hm - weird - these should be Point attributes not Vertex ones... You are using the Napoleon Model?
@@MarkusHeckmann I'm having the same issue with basically any other file. I get the same vertex result as @Moreno Belic but I took those files into houdini and they have point attributes and no vertex attributes. What i had to do was add the normals with an attribute create and then, and maybe I missed this step in the tut but I don't think so... I had to change the parameter Apply to, of the Texture sop to point texture. Hope that helps Moreno!
cool.
when i do it with other object i cant center it when i change Input Extend Mode UV to Hold. Any suggestions?
also i dont have an ArcBallCamera so i use the CameraViewPort but it's not the same
the result is wonderful but since a lot of things changed from one version to other i guess, this turned out to be a complete mess, im so frustrated that my model is not doing anything alike the example, and all of the problems started with the alpha, i feel i have lost a lot of time since its the second time i try to do this... i hope im the one messing everything up and maybe in a year or so i decide to do this again with the result i was expecting, anyway thanks for the tutorial i wish i have the other version so i can follow up as everybody else
Maybe post in the forum here: forum.derivative.ca/t/pointclouds-in-touchdesigner-2019-11-30-12-37/115172/16?u=snaut what the problems are you are running into. Share your file as well and I can help with the issues you are encountering.
When it says unknown attribute uv, does this only mean its a shit model I have here? I get this with anything else than the napoleon so far. Is there a way of opening it in cinema4d and re-export with uv maybe? thx
you can create the uv coordinates with a texture SOP, just make sure that you choose "Point texture" for the Apply to Parameter. depending on your model, the resulting texture coordinates will make sense or not :) What models are you working with?
@@MarkusHeckmann spot on, point texture, totally missed that one thx.
@@MarkusHeckmann Actually the normals that are the problem now, here is the model; sketchfab.com/3d-models/udjat-eye-of-ra-1297-1185-bce-with-mtl-file-726205b2cff74c188701ffe75bf372c2
@@MarkusHeckmann I added 'attribute create' normal seems to work , thx for help , all works!
@@MarkusHeckmann actually_create_normal_allows_you_to_finish_tutorial_but_end_up_sop_is_fairly_messed_up.Then_I_tried_exporting_my_own_OBJ_from_cinema_4d,_I_get_same_problem,_Cannot_extract_normals.
whoa....
thank you, any chance of collaboration on an art project ?
Thanks for your interest - you can contact me via my channel's "About" page with inquiries.
epic
I'm sorry but finally when I go to instance the null_pos top, everything disappear... very very disappointed
is it cat sound behind at 29:52 ? I thought it was my cat and it wasn't. lol
Haha, one of my favorite features of Markus' videos is his cat constantly meowing in the background!