Hi all,
Im wondering why imported sketchup models let directional light in at the seams.  Try this experiment.  Create a simple box in sketchup and import it into Iclone.  Place the camera inside the box and then turn on the directional light and move the light around. Notice the edges let light in like theres cracks in the seems.  Load up a box fromo Iclone props and do the same.  No light issues.  Anyone have any ideas why this is the case?

There's only one way for light to come in.... Open Edge.
Is there a setting that welds "Edge Vertices" together.

SketchUp requires lots of attention.
You gain good 3d tool experience, though.

As Swoop says -- in XChange you can select all the parts and do a smooth with "weld vertices" checkmarked that ought to solve this.

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Mike "ex-genius" Kelley

Thanks for the input guys but I got the same results after welding and exporting as 2-sided.  This is only an issue with directional light.  Spotlights do not have the same results.

I had this problem. Welding would not help if the box walls do not have a substantial thickness.

Bring a default iClone box to the scene, scale it and go inside. Play with direct light and notice it is leaking all over the place.
Now try to make a large box with iClone Wall prop, go inside and rotate the light - leaking is gone, even though walls are not welded together.
Though it is a good practice to always have your props mesh solid - welded.

Have you checked your shadow bias?

Yes, if I adjust the shadow bias enough to get rid of the issue  I lose the shadows I wanted.  The workaround for me is to use a spotlight in place of the directional light.  Still I wonder what causes this issue.

I did a test with a cone within the box and found that even with lights off there was still gray. So I changed the background to black to have a clear starting point.

Regardless, there is still some light leaking at certain angles.

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I have always had this issue with iClone. I was hoping I was missing something and someone might have a solution.
But that's how I've always dealt with it...using a Spotlight and adjusting it's angle and falloff.



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Not relying on 3dxchange's (Smooth & Weld) has anyone actually tried exporting the "Leaking Object" into say Blender and "Weld" it shut.
If any light leaks through a (properly) welded object... time to use new lighting.