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General Category => General Anim8or Forum => Topic started by: Familyman on April 29, 2008, 01:17:04 pm

Title: need help with making a colour transparent.
Post by: Familyman on April 29, 2008, 01:17:04 pm: Ok heres the problem, I am trying to put a image on an object and then make a certain colour of that image clear?transparent, but I can not figure it out. Any help please..
Thanks.
Jai
Title: Re: need help with making a colour transparent.
Post by: lynn22 on April 29, 2008, 01:23:19 pm: You can use a transparent gif to put on your object. Would it help if you made that particular color transparent in your gif image ?
Title: Re: need help with making a colour transparent.
Post by: Olias on April 29, 2008, 01:41:04 pm: If I follow you correctly what you're trying to do is make a transparency map texture?

Basically how it works is black areas will be totally transparent fading up to opague where the luminosity increases.
Title: Re: need help with making a colour transparent.
Post by: Kubajzz on April 29, 2008, 01:55:22 pm: See this topic on the old forum (http://www.anim8or.com/ubb/Forum1/HTML/007820.html), the last post shows how exactly do transparency maps work. You will have to create two images, one of them 'normal' and the other will be a grayscale transparency map.

If you don't need semi-transparency and you want only 100% opaque or 100% transparent material, you can use a .gif image as lynn22 suggested. For more info about using transparent gifs see the manual: http://www.anim8or.com/manual/10_materials.html#texture_mode (http://www.anim8or.com/manual/10_materials.html#texture_mode)
Title: Re: need help with making a colour transparent.
Post by: Olias on April 29, 2008, 03:47:01 pm: Hmm, well I guess it depends on what you are trying to accomplish, but you don't necessarily need a grayscale image or two images.

For example, I used this for the windows on my Enterprise model:

(http://i50.photobucket.com/albums/f326/olias7/Porthole-Round2.jpg)

The black area is completely transparent while the circular part shows up just fine.

Granted, in this case the edges of the window where it's dark would be partially transparent but these are such a small feature on the ship it's not noticable.
Title: Re: need help with making a colour transparent.
Post by: EcoTyler on April 29, 2008, 04:18:08 pm: Well heres a rough model of a Tree I made with a trans. map with color if thats what you mean ???

(http://img356.imageshack.us/img356/1592/treesq8.jpg)

But the leaves look like slime from mars :-\
Title: Re: need help with making a colour transparent.
Post by: almost cool on April 29, 2008, 09:59:12 pm: slime from mars?just increase the rough and it will look like leaves.
Title: Re: need help with making a colour transparent.
Post by: Familyman on May 05, 2008, 01:47:52 pm: Thanks to everyone, especialy Kubajzz for pointing me to that older thread, that was just what I needed. thanks.