BLI_noise.hh File Reference

#include "BLI_math_matrix_types.hh"
#include "BLI_math_vector_types.hh"

Go to the source code of this file.

Classes
struct	blender::noise::VoronoiParams
struct	blender::noise::VoronoiOutput

Namespaces
namespace	blender
namespace	blender::noise

Functions
Hash Functions
Create a randomized hash from the given inputs. Contrary to hash functions in BLI_hash.hh these functions produce better randomness but are more expensive to compute.
uint32_t	blender::noise::hash (uint32_t kx)
uint32_t	blender::noise::hash (uint32_t kx, uint32_t ky)
uint32_t	blender::noise::hash (uint32_t kx, uint32_t ky, uint32_t kz)
uint32_t	blender::noise::hash (uint32_t kx, uint32_t ky, uint32_t kz, uint32_t kw)
uint32_t	blender::noise::hash_float (float kx)
uint32_t	blender::noise::hash_float (float2 k)
uint32_t	blender::noise::hash_float (float3 k)
uint32_t	blender::noise::hash_float (float4 k)
uint32_t	blender::noise::hash_float (const float4x4 &k)
float	blender::noise::hash_to_float (uint32_t kx)
float	blender::noise::hash_to_float (uint32_t kx, uint32_t ky)
float	blender::noise::hash_to_float (uint32_t kx, uint32_t ky, uint32_t kz)
float	blender::noise::hash_to_float (uint32_t kx, uint32_t ky, uint32_t kz, uint32_t kw)
float	blender::noise::hash_float_to_float (float k)
float	blender::noise::hash_float_to_float (float2 k)
float	blender::noise::hash_float_to_float (float3 k)
float	blender::noise::hash_float_to_float (float4 k)
float2	blender::noise::hash_float_to_float2 (float2 k)
float2	blender::noise::hash_float_to_float2 (float3 k)
float2	blender::noise::hash_float_to_float2 (float4 k)
float3	blender::noise::hash_float_to_float3 (float k)
float3	blender::noise::hash_float_to_float3 (float2 k)
float3	blender::noise::hash_float_to_float3 (float3 k)
float3	blender::noise::hash_float_to_float3 (float4 k)
float4	blender::noise::hash_float_to_float4 (float4 k)
Perlin Noise
Perlin, Ken. "Improving noise." Proceedings of the 29th annual conference on Computer graphics and interactive techniques. 2002. This implementation is functionally identical to the implementations in EEVEE, OSL, and SVM. So any changes should be applied in all relevant implementations.
float	blender::noise::perlin_signed (float position)
float	blender::noise::perlin_signed (float2 position)
float	blender::noise::perlin_signed (float3 position)
float	blender::noise::perlin_signed (float4 position)
float	blender::noise::perlin (float position)
float	blender::noise::perlin (float2 position)
float	blender::noise::perlin (float3 position)
float	blender::noise::perlin (float4 position)
template<typename T >
float	blender::noise::perlin_fbm (T p, float detail, float roughness, float lacunarity, bool normalize)
template<typename T >
float	blender::noise::perlin_fractal_distorted (T position, float detail, float roughness, float lacunarity, float offset, float gain, float distortion, int type, bool normalize)
float3	blender::noise::perlin_float3_fractal_distorted (float position, float detail, float roughness, float lacunarity, float offset, float gain, float distortion, int type, bool normalize)
float3	blender::noise::perlin_float3_fractal_distorted (float2 position, float detail, float roughness, float lacunarity, float offset, float gain, float distortion, int type, bool normalize)
float3	blender::noise::perlin_float3_fractal_distorted (float3 position, float detail, float roughness, float lacunarity, float offset, float gain, float distortion, int type, bool normalize)
float3	blender::noise::perlin_float3_fractal_distorted (float4 position, float detail, float roughness, float lacunarity, float offset, float gain, float distortion, int type, bool normalize)
Voronoi Noise
Note Ported from Cycles code. Original code is under the MIT License, Copyright (c) 2013 Inigo Quilez. Smooth Voronoi: https://wiki.blender.org/wiki/User:OmarSquircleArt/GSoC2019/Documentation/Smooth_Voronoi Distance To Edge based on: https://www.iquilezles.org/www/articles/voronoilines/voronoilines.htm https://www.shadertoy.com/view/ldl3W8 With optimization to change -2..2 scan window to -1..1 for better performance, as explained in https://www.shadertoy.com/view/llG3zy.
float	blender::noise::voronoi_distance (const float a, const float b)
float	blender::noise::voronoi_distance (const float2 a, const float2 b, const VoronoiParams &params)
float	blender::noise::voronoi_distance (const float3 a, const float3 b, const VoronoiParams &params)
float	blender::noise::voronoi_distance (const float4 a, const float4 b, const VoronoiParams &params)
float4	blender::noise::voronoi_position (const float coord)
VoronoiOutput	blender::noise::voronoi_f1 (const VoronoiParams &params, const float coord)
VoronoiOutput	blender::noise::voronoi_smooth_f1 (const VoronoiParams &params, const float coord, const bool calc_color)
VoronoiOutput	blender::noise::voronoi_f2 (const VoronoiParams &params, const float coord)
float	blender::noise::voronoi_distance_to_edge (const VoronoiParams &params, const float coord)
float	blender::noise::voronoi_n_sphere_radius (const VoronoiParams &params, const float coord)
float4	blender::noise::voronoi_position (const float2 coord)
VoronoiOutput	blender::noise::voronoi_f1 (const VoronoiParams &params, const float2 coord)
VoronoiOutput	blender::noise::voronoi_smooth_f1 (const VoronoiParams &params, const float2 coord, const bool calc_color)
VoronoiOutput	blender::noise::voronoi_f2 (const VoronoiParams &params, const float2 coord)
float	blender::noise::voronoi_distance_to_edge (const VoronoiParams &params, const float2 coord)
float	blender::noise::voronoi_n_sphere_radius (const VoronoiParams &params, const float2 coord)
float4	blender::noise::voronoi_position (const float3 coord)
VoronoiOutput	blender::noise::voronoi_f1 (const VoronoiParams &params, const float3 coord)
VoronoiOutput	blender::noise::voronoi_smooth_f1 (const VoronoiParams &params, const float3 coord, const bool calc_color)
VoronoiOutput	blender::noise::voronoi_f2 (const VoronoiParams &params, const float3 coord)
float	blender::noise::voronoi_distance_to_edge (const VoronoiParams &params, const float3 coord)
float	blender::noise::voronoi_n_sphere_radius (const VoronoiParams &params, const float3 coord)
float4	blender::noise::voronoi_position (const float4 coord)
VoronoiOutput	blender::noise::voronoi_f1 (const VoronoiParams &params, const float4 coord)
VoronoiOutput	blender::noise::voronoi_smooth_f1 (const VoronoiParams &params, const float4 coord, const bool calc_color)
VoronoiOutput	blender::noise::voronoi_f2 (const VoronoiParams &params, const float4 coord)
float	blender::noise::voronoi_distance_to_edge (const VoronoiParams &params, const float4 coord)
float	blender::noise::voronoi_n_sphere_radius (const VoronoiParams &params, const float4 coord)
template<typename T >
VoronoiOutput	blender::noise::fractal_voronoi_x_fx (const VoronoiParams &params, const T coord, const bool calc_color)
template<typename T >
float	blender::noise::fractal_voronoi_distance_to_edge (const VoronoiParams &params, const T coord)
Gabor Noise
Implements Gabor noise based on the paper: Lagae, Ares, et al. "Procedural noise using sparse Gabor convolution." ACM Transactions on Graphics (TOG) 28.3 (2009): 1-10. But with the improvements from the paper: Tavernier, Vincent, et al. "Making gabor noise fast and normalized." Eurographics 2019-40th Annual Conference of the European Association for Computer Graphics. 2019. And compute the Phase and Intensity of the Gabor based on the paper: Tricard, Thibault, et al. "Procedural phasor noise." ACM Transactions on Graphics (TOG) 38.4 (2019): 1-13.
void	blender::noise::gabor (const float2 coordinates, const float scale, const float frequency, const float anisotropy, const float orientation, float *r_value, float *r_phase, float *r_intensity)
void	blender::noise::gabor (const float3 coordinates, const float scale, const float frequency, const float anisotropy, const float3 orientation, float *r_value, float *r_phase, float *r_intensity)