CGTalk - Ramp for Combustion

schwastika

03-01-2006, 12:43 AM

I have some problems working with ramps in combustion. I figured there's no shortcut to a pre-made ramp provided in combustion, so i created it in paint.

But as soon as after i created the ramp, i do not understand why it doesn't gives me the alpha channel even if i click on the 'preserve alpha' or switch the paint mode to alpha.

Hope somebody could give me some advise here.

sindbad17

03-04-2006, 01:12 PM

Hi schwastika,

when you want to create a ramp in the paint, there are 2 things you actually have to do :

1) define the color of the ramp
2) define the alpha of the ramp

In the gradient sub-menu of the paint control panel, you have 2 bars : one for the Color and another one for the Alpha

If you want to create a ramp from white to transparent for instance, you just have to leave the color bar to white, with no gradient, BUT create a ramp from white to black in the alpha channel.

Now you will have a proper ramp that has the color you want AND the transparency you want.

So remember, you must always define the color of the ramp AND the alpha of the ramp.

Hope it will help you.

Fabrice

schwastika

03-05-2006, 07:35 AM

hey sindbad17, that's what i needed, thanks for the help.

cheers

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