sketchucation logo sketchucation
    • Login
    ℹ️ Licensed Extensions | FredoBatch, ElevationProfile, FredoSketch, LayOps, MatSim and Pic2Shape will require license from Sept 1st More Info

    Problem with casting shadows from invisible object

    Scheduled Pinned Locked Moved V-Ray
    renderpluginsextensions
    3 Posts 3 Posters 394 Views 3 Watching
    Loading More Posts
    • Oldest to Newest
    • Newest to Oldest
    • Most Votes
    Reply
    • Reply as topic
    Log in to reply
    This topic has been deleted. Only users with topic management privileges can see it.
    • saberopusS Offline
      saberopus
      last edited by

      Hey friends,

      Like various others have said before, I'm trying to create an invisible shadow-casting object to make up for the shadow casting limitations of the 2d trees I am using. I've read the previous threads about using a transparent PNG as a texture, but I have (for some reason) never been able to make this work. I've used PNGs with 0% opacity, PNGs with 1% opacity, I've tried TIFs (though I think SU doesn't support transparency in TIF?). I've even downloaded Gaieus' 'transparent buildings with shadow' example component from the warehouse (http://sketchup.google.com/3dwarehouse/details?mid=779b98e58f0afd42cb6ac4bba1570c24&prevstart=0), and every time, my PNGs render as white.

      I was wondering if there was any obvious reason for this, or some setting I'm failing to enable in vray?

      I'm running SU version 8.0.4811, if that matters. Not sure how to check my VfS version #.

      I've attached the sketchup viewport and rendered output...

      Thanks!


      invis01.jpg


      invis02.jpg


      invis03.jpg

      1 Reply Last reply Reply Quote 0
      • RedFoxyR Offline
        RedFoxy
        last edited by

        I am not a specialist in sketchup yet, since I have started not so long ago, so I am not sure if it will solve your problem, but since I have been trying recently to create a perforated box maybe this will help you, as it helped me.
        What I did was applying the texture to both sides of each plane. If only applied outside it would still render as non-transparent thing, but applying it to both sides of each wall has made it work.

        1 Reply Last reply Reply Quote 0
        • panixiaP Offline
          panixia
          last edited by

          you got an old version update to lastest and then leave the opacity 100% and tick "use color texture for transparency" in the diffuse slot, that's it. for proper shadow apply the png on both positive and negative faces.

          1 Reply Last reply Reply Quote 0
          • 1 / 1
          • First post
            Last post
          Buy SketchPlus
          Buy SUbD
          Buy WrapR
          Buy eBook
          Buy Modelur
          Buy Vertex Tools
          Buy SketchCuisine
          Buy FormFonts

          Advertisement