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参数

[in]	table	A preallocated array of size max_octaves + 2 . The caller owns the pointed array.
[in]	max_octaves	The number of octaves for the table.
[in]	lacunarity	The gap between successive frequencies.
[in]	h	The fractal increment parameter.

◆  Fbm() [1/2]

Generates a Fractional Brownian Motion value.

注意

InitFbm() must be called before this function.

参数

[in]	table	The preallocated and initialized table by InitFbm() . The caller owns the pointed array.
[in]	p	The evaluation point.
[in]	oct	The number of octaves. Must not exceed the max_octaves value passed to InitFbm() , but can be lower.

返回

The fBm value.

◆  Fbm() [2/2]

Generates a Fractional Brownian Motion value.

注意

InitFbm() must be called before this function.

参数

[in]	table	The preallocated and initialized table by InitFbm() . The caller owns the pointed array.
[in]	p	The evaluation point.
[in]	t	The time.
[in]	oct	The number of octaves. Must not exceed the max_octaves value passed to InitFbm() , but can be lower.

返回

The fBm value.

◆  RidgedMultifractal()

Generates a fractal function used for such things as landscapes or mountain ranges.

注意

InitFbm() must be called before this function.

参数

[in]	table	The preallocated and initialized table by InitFbm() . The caller owns the pointed array.
[in]	p	The evaluation point.
[in]	oct	The number of octaves. Must not exceed the max_octaves value passed to InitFbm() , but can be lower.
[in]	offset	The zero offset, this controls the multi-fractal.
[in]	gain	The amplification of the fractal value.

返回

The fractal value.