RandomNumberGenerator Class Reference

#include <BLI_rand.hh>

Public Member Functions
	RandomNumberGenerator (uint32_t seed=0)
void	seed (uint32_t seed)
void	seed_random (uint32_t seed)
uint32_t	get_uint32 ()
int32_t	get_int32 ()
int32_t	get_int32 (int32_t max_exclusive)
uint64_t	get_uint64 ()
double	get_double ()
float	get_float ()
template<typename T>
void	shuffle (MutableSpan< T > values)
float3	get_barycentric_coordinates ()
int	round_probabilistic (float x)
float2	get_unit_float2 ()
float3	get_unit_float3 ()
float2	get_triangle_sample (float2 v1, float2 v2, float2 v3)
float3	get_triangle_sample_3d (float3 v1, float3 v2, float3 v3)
void	get_bytes (MutableSpan< char > r_bytes)
void	skip (int64_t n)

Static Public Member Functions
static RandomNumberGenerator	from_random_seed ()

Detailed Description

Definition at line 17 of file BLI_rand.hh.

Constructor & Destructor Documentation

RandomNumberGenerator()

blender::RandomNumberGenerator::RandomNumberGenerator ( uint32_t seed = 0 )

inline

Definition at line 22 of file BLI_rand.hh.

Member Function Documentation

from_random_seed()

RandomNumberGenerator blender::RandomNumberGenerator::from_random_seed ( )

static

Creates a random number generator with a somewhat random seed. This can be used when determinism is not necessary or not desired.

Definition at line 365 of file rand.cc.

Referenced by blender::ed::sculpt_paint::greasepencil::PaintOperation::on_stroke_begin().

get_barycentric_coordinates()

float3 blender::RandomNumberGenerator::get_barycentric_coordinates ( )

inline

Compute uniformly distributed barycentric coordinates.

Definition at line 105 of file BLI_rand.hh.

get_bytes()

void blender::RandomNumberGenerator::get_bytes

(

MutableSpan< char >

r_bytes

)

Definition at line 450 of file rand.cc.

get_double()

double blender::RandomNumberGenerator::get_double ( )

inline

Returns

Random value (0..1), but never 1.0.

Definition at line 76 of file BLI_rand.hh.

get_float()

float blender::RandomNumberGenerator::get_float ( )

inline

Returns

Random value (0..1), but never 1.0.

Definition at line 84 of file BLI_rand.hh.

get_int32() [1/2]

int32_t blender::RandomNumberGenerator::get_int32 ( )

inline

Definition at line 53 of file BLI_rand.hh.

get_int32() [2/2]

int32_t blender::RandomNumberGenerator::get_int32 ( int32_t max_exclusive )

inline

Returns

Random value (0..N), but never N.

Definition at line 67 of file BLI_rand.hh.

get_triangle_sample()

float2 blender::RandomNumberGenerator::get_triangle_sample	(	float2	v1,
		float2	v2,
		float2	v3 )

Generate a random point inside the given triangle.

Definition at line 412 of file rand.cc.

get_triangle_sample_3d()

float3 blender::RandomNumberGenerator::get_triangle_sample_3d	(	float3	v1,
		float3	v2,
		float3	v3 )

Definition at line 431 of file rand.cc.

get_uint32()

uint32_t blender::RandomNumberGenerator::get_uint32 ( )

inline

Definition at line 47 of file BLI_rand.hh.

get_uint64()

uint64_t blender::RandomNumberGenerator::get_uint64 ( )

inline

Definition at line 59 of file BLI_rand.hh.

get_unit_float2()

float2 blender::RandomNumberGenerator::get_unit_float2

(

)

Definition at line 392 of file rand.cc.

get_unit_float3()

float3 blender::RandomNumberGenerator::get_unit_float3

(

)

Definition at line 398 of file rand.cc.

round_probabilistic()

int blender::RandomNumberGenerator::round_probabilistic

(

float

x

)

Round value to the next integer randomly. 4.9f is more likely to round to 5 than 4.6f.

Definition at line 383 of file rand.cc.

seed()

void blender::RandomNumberGenerator::seed ( uint32_t seed )

inline

Set the seed for future random numbers.

Definition at line 36 of file BLI_rand.hh.

seed_random()

void blender::RandomNumberGenerator::seed_random

(

uint32_t

seed

)

Set a randomized hash of the value as seed.

Definition at line 374 of file rand.cc.

shuffle()

template<typename T>

void blender::RandomNumberGenerator::shuffle ( MutableSpan< T > values )

inline

Definition at line 89 of file BLI_rand.hh.

skip()

void blender::RandomNumberGenerator::skip ( int64_t n )

inline

Simulate getting n random values.

Definition at line 136 of file BLI_rand.hh.

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The documentation for this class was generated from the following files:

• BLI_rand.hh
• rand.cc