KeyShot Forum

Technical discussions => Materials => Topic started by: Jikkk on December 29, 2016, 05:16:50 am

Title: Overall Opacity
Post by: Jikkk on December 29, 2016, 05:16:50 am
Hi, guys!
In addition to the opacity map that defines the transparent areas, I'm wondering if we can control the overall opacity of materials (just like we do in Photoshop percentagely).
Thanks!
Title: Re: Overall Opacity
Post by: richardfunnell on December 29, 2016, 05:38:16 am
There's not a way to do it with a slider like in Photoshop, but you can add a solid color + transparency to define the opacity.

In the Library > Textures > Opacity Maps > Solid you have a set of images can be used exactly this way. They range from 00 to 90 percent visible and can limit the opacity of the entire material.
Title: Re: Overall Opacity
Post by: INNEO_MWo on December 29, 2016, 06:21:22 am
There is a way to achieve this via 'slider'. Since KeyShot 6 we can use the material graph. And the color-to-number utility node can be used for this. The output to slider defines the color black with a value of 0 and white with the value of 1. And the color black in the opacity channel means 100% transparent and vise versa.

Details can be analysed in the attached example. (The color to number node can be placed directly to the opacity channel)

but! by the way - this technique is not very comfortable or practical - but possible.


Cheers,
Marco
Title: Re: Overall Opacity
Post by: Jikkk on December 29, 2016, 12:53:27 pm
Thanks both for ya :)