StackedPerlinNoise2¶
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class
StackedPerlinNoise2
¶ Implements a multi-layer
PerlinNoise
, with one or more high-frequency noise functions added to a lower-frequency base noise function.Inheritance diagram
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StackedPerlinNoise2
(void)¶
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explicit
StackedPerlinNoise2
(double sx, double sy, int num_levels = 2, double scale_factor = 4.0, double amp_scale = 0.5, int table_size = 256, unsigned long int seed = 0)¶
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StackedPerlinNoise2
(StackedPerlinNoise2 const ©)¶ Creates a
StackedPerlinNoise2
object with no levels. You should calladd_level()
to add each level by hand.Creates num_levels nested
PerlinNoise2
objects. Each stacked Perlin object will have a scale of 1 scale_factor times the previous object (so that it is higher-frequency, if scale_factor > 1), and an amplitude of amp_scale times the previous object (so that it is less important, if amp_scale < 1).Creates an exact duplicate of the existing
StackedPerlinNoise2
object, including the random seed.
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void
add_level
(PerlinNoise2 const &level, double amp = 1.0)¶ Adds an arbitrary
PerlinNoise2
object, and an associated amplitude, to the stack.
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void
clear
(void)¶ Removes all levels from the stack. You must call
add_level()
again to restore them.
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double
noise
(double x, double y)¶
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float
noise
(LVecBase2f const &value)¶
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double
noise
(LVecBase2d const &value)¶ Returns the noise function of the three inputs.
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