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Lights through gauzes and drapes
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Mark Powell
New Member
Posts: New Member

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2017-06-20 16:34
    Hi all, I wonder if you can help:

    I want to have a drape that light shines through, like a sharkstooth gauze. I have added a drape to my drawing and set transparency to anything from 50% to 90% but the light beams do not shine through it, they just light up the back side.

    Is there a way of doing this?

    What Im trying to achieve is to have lights concealed behind the gauze and only revealed when they shine through it.

    Many thanks in advance.

    John S Nichter
    Advanced Member
    Posts:147 Advanced Member

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    2017-06-21 17:11
    Hey Mark,

    Select the object. In this case, the drape, and in its Properties window, change Cast shadows to (No). This should help.

    Best,
    Johnny

    Mark Powell
    New Member
    Posts: New Member

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    2017-06-23 15:59

    Thank you John, this works well!

    Cheers

    Sirje Ruohtula
    New Member
    Posts:5 New Member

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    2025-01-25 16:21

    Hello, following this, I made a black gauze from a curtain, which works quite ok. But the curtain still has wave length. I want to make a basic streched sharks tooth gobelin tull, but I don´t quite know how to. Should I use some other tool than the curtain?

    SVF Lighting
    New Member
    Posts:3 New Member

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    2025-01-26 10:51

    I suggest adding a regular cube form, and stretching that very thin across the surface you want it to be.
    Works very well.

    Sirje Ruohtula
    New Member
    Posts:5 New Member

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    2025-01-27 12:00

    Thanks, Your gauze looks great! Testing now this and wondering for which are the best values for transparency, luminance, roughness and so on. Did You use any texture?

    Sirje Ruohtula
    New Member
    Posts:5 New Member

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    2025-01-27 15:51

    Still having problem about the gauze. If I make it say 30% transparent, it looks ok, but it should also cast shadow. If it does cast shadow, tha shadow is too dark. A real gauze transmits partly, and the shadow of the object behind is visible, and same time there is an about 50% shadow of the gauze itself. Somehow playing with tsis doesn´t quite become as I hope! If anyone has solved this, please give me a hint for a black sharkstooth gobelin tull = gauze!

    Floriaan
    Veteran Member
    Posts:329 Veteran Member

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    2025-01-28 09:59

    I once experimented with a texture image with alpha (transparency). This works sort of good. But I am guessing it takes a toll on the perfromance.

    Floriaan Ganzevoort
    Lighting Designer - Theatermachine
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