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eval_pigment(Pigm, Vect), This macro evaluates the color of a pigment
at a specific point. Some pigments require more information than simply a point, slope
pattern based pigments for example, and will not work with this macro. However, most
pigments will work fine.
Parameters:
Vect = The point at which to evaluate the pigment.Pigm = The pigment to evaluate.f_snoise3d(x, y, z). Just like f_noise3d(), but returns values in the range [-1, 1].
f_sine_wave(val, amplitude, frequency). Turns a ramping waveform into a sine waveform.
f_scallop_wave(val, amplitude, frequency). Turns a ramping waveform into
a "scallop_wave" waveform.
Predefined pattern functions, useful for building custom function patterns or performing "displacement mapping" on isosurfaces. Many of them aren't really useful for these purposes, they are simply included for completeness.
Some are not implemented at all because they require special parameters that must be specified in the definition, or information that isn't available to pattern functions. For this reason, you probably would want to define your own versions of these functions.
All of these functions take three parameters, the XYZ coordinates of the point to evaluate the pattern at.
f_agate(x, y, z)f_boxed(x, y, z)f_bozo(x, y, z)f_brick(x, y, z)f_bumps(x, y, z)f_checker(x, y, z)f_crackle(x, y, z)f_cylindrical(x, y, z)f_dents(x, y, z)f_gradientX(x, y, z)f_gradientY(x, y, z)f_gradientZ(x, y, z)f_granite(x, y, z)f_hexagon(x, y, z)f_leopard(x, y, z)f_mandel(x, y, z)f_marble(x, y, z)f_onion(x, y, z)f_planar(x, y, z)f_radial(x, y, z)f_ripples(x, y, z)f_spherical(x, y, z)f_spiral1(x, y, z)f_spiral2(x, y, z)f_spotted(x, y, z)f_waves(x, y, z)f_wood(x, y, z)f_wrinkles(x, y, z)
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