Subtractive color overlap?

[feklee]

Is there some function in Xtreme / Designer, so that when I place two objects on top of each other, then their colors are mixed according to the subtractive color model?

Example: blue circle on top of yellow circle = green circle

[iamtheblues]

Applying a stained glass transparency will do it.
Bob.

[Soquili]

Stained Glass Transparency is good for subtractive colors and Bleach Transparency is good for additive colors.

[feklee]

Thanks - works! I already found out about bleach for additive colors.

And I have to correct myself: cyan + yellow = green, blue + yellow = (cyan + magenta) + yellow = black

[csehz]

I also thanks this is very interesting topic :-)

Bill, basically how did you do these circles in steps? Because somehow for me came out differently The stained glass transparency should be set on 50%?

[feklee]

The stained glass transparency should be set on 50%?

0%

[csehz]

Ah okay thanks :-) And that by myself found out that on the second picture that is why the background is black, because that makes visible the original colours as black + 0% bleach transparency



Simple playing but very interesting, like in the school a little bit, but that time did not have such professional program to play

[Soquili]

Looks like you sorted the bleach transparency (additive) colours.

If anyone is interested in a bit of explaination.

The Black background is used for the additive example because the lack of light is black. Adding the primary coloured lights Red, Green, and Blue they combine to become other colours with all colours making White.

In a similar manner begin with a White background and subtract colours Cyan, Magenta, and Yellow, which eventually removes all colours to reveal Black.

Artist using pigments for paints are more familiar with the Primary pigments Red, Yellow, and Blue which work similar to subtractive colours of light. Although you get a muddy brown rather than a Black.

[gwpriester]

Stained Glass transparency makes white totally transparent. Bleach transparency makes black totally transparent.

In the attached example, I applied 0% Bleach transparnecy to the black overlay which makes the black totally transparent but retains some of the color from the overlay image. The darker the bottom image, the more intense the overlaid colors. If the background is lighter, the overlay colors will also get lighter.

In the second example I placed a rainbow colored overlay over a black drawing with white outlines. 0% Stained Glass applied to the colored overlay does not affect the black on the bottom but adds the color to the white outlines.

[Soquili]

Great examples Gary. And they are stereograms!