Gaussian Spectrum
The Gaussian Spectrum node uses a Gaussian distribution spectrum to generate color (figure 1).
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Gaussian Spectrum
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Figure 1: Gaussian Spectrum parameters
Gaussian Parameters
Wavelength - The mean wavelength approximation between 380 nm - 720 nm (with a range from 0 - 1). Lower values appear bluish, and higher values (around 700 nm) appear reddish.
Width - When set to 0, almost no color is visible. When set to 1, the color spreads thin over a large space, and the texture appears faint.
Power/Brightness - The texture's brightness.
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Gaussian SPectrum
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Figure 2: The Gaussian Spectrum node connected to the Diffuse input on a Diffuse material node.