Chaos Corona Forum

Chaos Corona for Cinema 4D => [C4D] I need help! => Topic started by: iacdxb on 2023-10-31, 08:58:19

Title: Volume glass and mat sticker
Post by: iacdxb on 2023-10-31, 08:58:19

Hi, a candle glass with grey volume and branding label mat sticker.
Sticker coming black... it should be mat white, any idea how can I fix sticker...?

Sticker effects with glass volume, if I do it white sticker comes fine.

Thanks.
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Title: Re: Volume glass and mat sticker
Post by: Beanzvision on 2023-10-31, 09:27:30

How are you applying the sticker? Is it a decal or a stacked material? Can you share the scene at all?

Title: Re: Volume glass and mat sticker
Post by: davetwo on 2023-10-31, 09:47:21

Try and copy real life is always a good suggestion. Is the label a separate object or is it a poly selection of the main glass?
If so you're mixing the refraction on the glass depth. It should be a separate label on top.

Use the split command to make a new poly object and apply your label to that instead

Title: Re: Volume glass and mat sticker
Post by: iacdxb on 2023-10-31, 09:48:11

sticker is separate polygon.

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Title: Re: Volume glass and mat sticker
Post by: iacdxb on 2023-10-31, 09:51:06

Thanks @ davetwo, its separate object.
have to tried glass with volume...?

thanks.
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Title: Re: Volume glass and mat sticker
Post by: iacdxb on 2023-10-31, 10:05:11

if I reduce glass volume.... its fine but I need dark glass.

here is file.

thanks.
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Title: Re: Volume glass and mat sticker
Post by: Beanzvision on 2023-10-31, 10:29:13

If the sticker needs to be white as mentioned, do you really need refraction on it?

(https://forum.corona-renderer.com/index.php?action=dlattach;topic=41289.0;attach=190034;image)

Title: Re: Volume glass and mat sticker
Post by: iacdxb on 2023-10-31, 10:39:06

no... not white, should be mat transparent.

like this.


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Title: Re: Volume glass and mat sticker
Post by: iacdxb on 2023-10-31, 10:57:37

Sorted and its perfect....!

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Title: Re: Volume glass and mat sticker
Post by: Beanzvision on 2023-10-31, 11:06:00

Care to share with others how you resolved it? :)

Title: Re: Volume glass and mat sticker
Post by: iacdxb on 2023-10-31, 11:12:24

ahhh... sorry.
Here is little trick, same file same setting, just reduce the Fraction to 95% of label material.
If increase glass volume, more dark... set label material fraction to 90 / less or more.

What is science behind it... no idea....!

thanks.
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