terça-feira, julho 27, 2004

Surf's up!

Non-Height Field Rendering

Surf's up!

Manuel Gamito in 1998/99. He worked on ray-domain distortion variations on QAEB tracing to render connected non-height field surfaces.

The next thing to do was to animate it. And so he did.

Manuel has since developed a complex and accurate model of shallow-water wave propagation to give this wave model a raison d'etre.

segunda-feira, julho 26, 2004

cmyk

Be aware that it is possible to see colors in RGB that you can't make with CMYK. They are said to be "out of the CMYK color gamut". What happens is that the RGB-to-CMYK translator just gets as close as possible to the appearance of the original and that's as good as it can be. It's something that everyone in the industry puts up with. So it's best to select any colors you use for fonts or other design elements in your layout using CMYK definitions instead of RGB. That way, you will have a better idea of how they will appear in your printed piece. Here's a common example: many programs translate the 100% Blue in RGB into a somewhat purple-looking color in CMYK. We recommend a CMYK value of 100-65-0-0 to get a nice clean blue. Working in the CMYK color space allows you to select the CMYK recipe, or "screen build", that gives you the results you want.

Here are some examples of how various RGB colors convert to CMYK:


rgb colors
(what you see on screen)

cmyk colors
(printing inks will do this)

rgb colors
(what you see on screen)

cmyk colors
(printing inks will do this)
You most likely won't notice this kind of color shift in a color photograph. It is more likely to happen if you pick a very rich, vibrant color for a background or some other element of your layout. It probably won't look bad, it just won't look exactly the same. But it may not be noticeable at all either.

rasta

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