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    I have an issue with projection mapping--does anyone have any suggestions?

    How To... ?
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    • Skulpture
      Skulpture Izzy Guru last edited by

      Square pixels is your friend :) 23c17d-screen-shot-2014-11-17-at-08.58.43.png

      Graham Thorne | www.grahamthorne.co.uk
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      • vanakaru
        vanakaru last edited by

        After Effects is even better. You can use Corner Pin to transform video to match your object shape.

        You can use AE ability to project external monitor strait to your object(unless you do outdoors/on site setrup) to create a map as well.

        MBP 4.1 & MBP (Retina, Mid 2012) MBP Retina 2017

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        • eight
          eight last edited by

          @gomer_pyle: This is not "a super low-tech way to do mapping", but one of the most accurate, if you can do it in situ. Speaking of which there is a After Effects Syphon plugin, so you can get what you see in AE right into Isadora: http://createdigitalmotion.com/2014/03/syphon-in-your-after-effects-lets-you-map-while-you-animate/

          --8

          Analysis: http://post.scriptum.ru | Synthesis: http://onewaytheater.us
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          • E
            Elton_John last edited by

            Wow, thanks for all of your helpful input everyone! I will check out that aftereffects plugin--sounds like just what I need.  So I was doing some more prototyping with Photoshop, making sure the resolution matched my projector's and that I was using square pixels. I didn't yet do anything with movie editing--just went straight from photoshop to Isadora so I could see if the image stayed the same.  Now when I project the full-screen stage onto my object in Isadora, it seems to be keeping the image size the same, but one odd thing that happens is that the projection suddenly moves like 6 inches above where it originally was in photoshop.  I moved my projector forward to try to match it up, but naturally that makes the image smaller.  Would there be a reason why Isadora would move the projection?

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            • vanakaru
              vanakaru last edited by

              Does your image just shift up or it becomes larger in all. You can zoom out in Projector Actor(I assume you talking moving physical projector).

              MBP 4.1 & MBP (Retina, Mid 2012) MBP Retina 2017

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              • E
                Elton_John last edited by

                It actually shifts upward without me adjusting anything. Also, I had it all the way zoomed to begin with because the projection isn't big enough, otherwise. (I'm sort of projecting from a fairly short distance so it needs to be zoomed in a lot)

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                • vanakaru
                  vanakaru last edited by

                  Did you try adjust position in Projector Actor? I do not know why the shift happens. Sounds like PS center does not match Isadora center. I assume your Canvas and Image size in PS is the same as in Isadora Preferences Stage size.

                  MBP 4.1 & MBP (Retina, Mid 2012) MBP Retina 2017

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                  • cambrucedavis
                    cambrucedavis last edited by

                    Are you editing the photoshop image full screen with the menu bars or without? Sometime if you edit with the menu bars on screen then press tab to take them out the image re-centres on the screen and moves up. Just a thought.

                    I also second the AE Syphon plugin. It is very slick for this sort of thing...

                    Projection Designer. Toronto, Canada
                    16" MacBook Pro M1 Max: OSX 12.5.1, Isadora 3.2.6, Isadora 4

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                    • E
                      Elton_John last edited by

                      I was mapping in Photoshop with the menu bars, and in fullscreen. Then I projected the Isadora stage in full-screen without menu bars, so maybe that is the reason for the shift. Also, when I get back home I will try moving the position in projector actor. If that doesn't work, I will most likely drop it and go with the Syphon plugin instead of PS. I guess I'm just a little daunted by learning new stuff when I have a deadline to meet, but it's worth a shot!  Thanks, all. You've been a tremendous help!!

                      update: Vanakaru, it turns out there was an actor in Isadora called "zoom" which I was able to use to adjust the projection's position. :D So that's solved then! Thanks, all!!

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                      • vanakaru
                        vanakaru last edited by

                        Actually I was referring to Projector Actor inputs. Zoomer works on CPU only while Cl Projector and new Texture Projector can use GPU and are much better performing. a2513f-projector.png

                        MBP 4.1 & MBP (Retina, Mid 2012) MBP Retina 2017

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