Projection Mapping Tools in TouchDesigner - TouchDesigner Tutorial 046
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- Опубліковано 5 лют 2025
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One of the great things about TouchDesigner is the amount of pre-built tools that come with it. A lot of the time these go unexplored and folks end up re-inventing the wheel. In this video, Elburz talks at a high level about some of the available projection mapping tools, when you might use them, and how to find help on getting up and running with them.
there no better chanel than this one, thank you soooooooooooooooooo much
Any time! Thanks for watching :)
Just discovered your channel, really helpful videos thanks! You're saving my project right now 😅
Great to hear! Glad you like our content and that it's helping your project :)
Hey! can i use this mapping techniques for laser mapping?
For sure, however you'd need to make some adjustments as you wouldn't be able to output directly to the laser as you would a projector. TouchDesigner prepares data for the laser via the Laser CHOP, and then sends data to the laser via the Laser Device CHOP. To generate data, the Laser CHOP expects either SOP or CHOP data, so the texture output of the mapping tools would need to be converted to one of those formats.
To do this, you could take the output of the projection mapping tool that would normally be sent to the projector, and then use the Trace SOP to generate 3D geometry from the texture. Then you can add a Laser CHOP, choose SOP for the *Source OP* parameter, and then drag the Trace SOP onto the *SOP* parameter.
To see an example of this setup, open up the OP Create Dialog by hitting Tab on you keyboard, go to the CHOP tab, right click on the Laser Device CHOP, and select OP Snippets. You'll see a very similar setup to what I've described here, except that it'll be generating a circle rather than tracing a texture. Hope that helps!
Really appreciate this , thank you.
Our pleasure! Glad you found it valuable :)
Stoner is missing from the Key moments menu.
Make sure you've selected the Mapping folder in the Palette, and you should see stoner as the second to last item in the list. Depending on your screen resolution, you may have to scroll down! It's also worth checking that you've updated TouchDesigner as well.
@@TheInteractiveImmersiveHQ Yes, i found the stoner and happily use it thanks to your video! What i ment is that "stoner" part is missing from the "Key Moments" in this video description.
wow, does it mean I can use CamSchnappr to take a 3D scan (Polycam App) of a decorated interior space and use for projection mapping in a spacious open space where visitors can experience the decorted interior virtually remotely?
If I'm understanding your question, I don't think CamSchnappr is the tool you'd use for this. CamSchnappr is meant for projection mapping onto a surface that you have an accurate 3D model of, meaning that the 3D model and the projection surface are intended to be of the same space. If the decorated room that you took the scan of were the same room that you were projecting in, this _might_ work, but unfortunately I don't have experience with using a 3D scan as the model for CamSchnappr.
@@TheInteractiveImmersiveHQ I see! Would you know of any other methods to achieve what I described using TD? Perhaps the gallery space would require some partitions for the projection mapping of the decorated space to work.
@@ysy69 Hi, you might know this, but since you're interested I'll say this. Projection mapping needs an object to be projection mapped upon. It's not like a hologram in the star wars sense. Meaning you could project different colours or wallpapers into a blank wall. It would need to be white for the most options. Also you could, for example with white furniture, and multiple projectors, make it so they take on different looks of colour and materials. Hope this makes sense. Recap: You need some kind of structure to project upon 😊
just curious, do you charge fixed price for your projects or mostly hourly? thanks
How about i want to map just one out top, but with different shapes in kantan mapper? (I mean i don’t want to map each scene individually
Just to clarify, are you looking to have one shape at a time in Kantan, but be able to load different mappings?
Maaan, here Kantan is so buggy 🤧 the hud, the shapes, the points...
Super helpful. Thank you!
Our pleasure! Thanks for watching :)
how can you go about using camschnapper with a multi projector setup ?
Great question! For this to work correctly, you need one instance of the CamScnappr COMP per projector and a texture that is as wide as the final image that you’ll be projecting. Then, for each CamSchnappr instance, turn on “Output is Part of Canvas” and adjust the projector resolution and grid position before continuing with the normal process. You’re basically following the usual process, but instead doing it for each projector. Hope that helps!
thanks!
Our pleasure! Thanks for watching :)
Can you please do. Real tutorial for 2d mapping with some inputs
We have a full length projection mapping course inside The HQ PRO, you can sign up for the free trial and watch the whole thing: interactiveimmersive.io/lp/hq-pro-full-trial/