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Attribute Substitutions
Copying and swapping attributes among lights that share scalar properties like
Position and Zoom is only the tip of the iceberg when using Natural Language
Control. The real power of Natural Language Control can be seen when you start
using similar, but not identical attributes and how Natural Language Control
works with them. Color is a great example. There are three primary automated
color systems in use today; Subtractive Color Systems like CMY, Additive Color
Systems like RGB (or RGBA etc.) and Fixed Color Systems that use gel (like
scrollers) or dichroic glass (like color wheels). Natural Language Control works
with any combination of these three and make intelligent substitutions between
them if required.
The proliferation of LED lighting has made common the RGB color space of
additive color mixing. With the three primary colors you can mix them to make
white or each at various levels to make colors.
More recently manufactures are using more than red, green and blue to achieve
'better' whites by adding either white or amber LEDs. We'll discuss what to do
with these later on. In contrast, traditional stage lighting starts with white light
and, by various mechanisms, color filters are placed in the path of the light to
subtract out different wavelengths. By introducing varying amounts of filtration, a
variety of colors can be produced.
Either way (additive or subtractive), the concept is to mix various colors to achieve
the desired results. You can easily work with RGB and CMY simultaneously,
referencing either or both in any base color space. If you copy those base color
attributes to a light that doesn't have color mixing abilities, but instead has a color
wheel, a suitable substitution will be made. Since the Natural Language Control
Fixture Library stores a lot more data than just the name of a color, mathematical