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    Transparency shadow threshold

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    • jenujacobJ Offline
      jenujacob
      last edited by

      yea even i dont get it.. how do we actually do this threshold thingy? should we make the object into a group??? πŸ˜’

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      • PixeroP Offline
        Pixero
        last edited by

        You have misunderstod its purpose.
        It's for setting objects with transparency to cast shadows or not.
        The only way to get SketchUp to cast shadows matching a texture with alpha channel would be to "cut it out" in the shape of the image.

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        • Dave RD Offline
          Dave R
          last edited by

          So, in other words this doesn't change the opacity level at which materials/textures applied in SU cast shadows. Instead it would be used to prevent the transparent parts of components from casting shadows. Maybe like in the case of the 2D trees?

          Etaoin Shrdlu

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          • GaieusG Offline
            Gaieus
            last edited by

            No Dave, I think the other way round. This does not change SU behaviour with png files and alpha transparency but should let you decide when to cast shadows and when not (not just at the 70% threshold).

            Gai...

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            • Dave RD Offline
              Dave R
              last edited by

              But apparently not with texture/materials applied to geometry in SketchUp?

              Etaoin Shrdlu

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              • GaieusG Offline
                Gaieus
                last edited by

                I don't know - haven't tried.
                Try with a simple colour first to see...

                Gai...

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                • Dave RD Offline
                  Dave R
                  last edited by

                  I did. I applied a color to a face. I selected it and then tried setting the threshold to .5 and then adjusted the opacity slider in the Edit materials box. As soon as the opacity dropped to 69 the shadow disappeared.

                  Etaoin Shrdlu

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                  • Dave RD Offline
                    Dave R
                    last edited by

                    Here's an example.

                    Rectangle with a color applied. Shadows turned on.

                    Picture 1: Opacity set to 70. Shadow Visible.

                    http://smg.photobucket.com/albums/v506/weekender410/th_Shadow1.jpg

                    Picture 2: Face selected and threshold set to .5.

                    http://smg.photobucket.com/albums/v506/weekender410/th_Shadow2.jpg

                    Picture 3: Opacity slider set to 69. Shadow gone.

                    http://smg.photobucket.com/albums/v506/weekender410/th_shadow3.jpg

                    Etaoin Shrdlu

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                    • GaieusG Offline
                      Gaieus
                      last edited by

                      Yeah, I get the same results (downloaded it finally).
                      Hm...

                      Gai...

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                      • PixeroP Offline
                        Pixero
                        last edited by

                        Hmmm... there seem to be a problem. Now it doesnt work the way it did when I tested it.
                        I'll try it more at work tomorrow.
                        For now you can use the other script, jsShadowControl, to turn shadow casting and shadow receiving on or off. Even for non transparent objects. πŸ˜„

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