Generates a value-noise value from the coordinates of a
three-dimensional input value.
@param x The @a x coordinate of the input value.
@param y The @a y coordinate of the input value.
@param z The @a z coordinate of the input value.
@param seed A random number seed.
@returns The generated value-noise value.
The return value ranges from -1.0 to +1.0.
A noise function differs from a random-number generator because it
always returns the same output value if the same input value is passed
to it.
Generates a value-noise value from the coordinates of a three-dimensional input value.
@param x The @a x coordinate of the input value. @param y The @a y coordinate of the input value. @param z The @a z coordinate of the input value. @param seed A random number seed.
@returns The generated value-noise value.
The return value ranges from -1.0 to +1.0.
A noise function differs from a random-number generator because it always returns the same output value if the same input value is passed to it.