staticrand.cpp File Reference

#include "math/staticrand.h"
#include "math/vecmat.h"

Go to the source code of this file.

Macros
#define	RND_MASK   0x6000
#define	RND_MAX   0x7fff

Functions
void	init_semirand ()
	Initialize Semirand array. Doesn't have to be called. More...
int	static_rand (int num)
	Return a pseudo random 32 bit value given a reasonably small number. More...
float	static_randf (int num)
	Return a random float in 0.0f .. 1.0f- (ie, it will never return 1.0f). More...
int	static_rand_range (int num, int min, int max)
	Return a random integer within a range. Note: min and max are inclusive. More...
float	static_randf_range (int num, float min, float max)
	Return a random float within a range. Note: min and max are inclusive. More...
void	static_randvec (int num, vec3d *vp)
	[To be described] More...
void	static_rand_cone (int num, vec3d *out, vec3d *in, float max_angle, matrix *orient)
	Randomly perturb a vector around a given (normalized vector) or optional orientation matrix. More...
void	init_static_rand_alt (int seed)
	Seed the alternative random number generator. Doesn't have to be called. More...
int	static_rand_alt ()
	Get a random integer between 1 and RND_MAX. More...
float	static_randf_alt ()
	Get a random integer between 0 and 1.0. More...

Variables
int	Semirand_inited = 0
int	Semirand [SEMIRAND_MAX]
int	Rnd_seed = 1

Macro Definition Documentation

#define RND_MASK   0x6000

Definition at line 156 of file staticrand.cpp.

#define RND_MAX   0x7fff

Definition at line 157 of file staticrand.cpp.

Function Documentation

void init_semirand

(

)

Initialize Semirand array. Doesn't have to be called.

Definition at line 22 of file staticrand.cpp.

void init_static_rand_alt

(

int

seed

)

Seed the alternative random number generator. Doesn't have to be called.

Parameters

seed	Seed input number

Definition at line 166 of file staticrand.cpp.

int static_rand

(

int

num

)

Return a pseudo random 32 bit value given a reasonably small number.

Parameters

num	Seed input number

Returns

Pseudo random 32 bit value

Definition at line 38 of file staticrand.cpp.

int static_rand_alt

(

)

Get a random integer between 1 and RND_MAX.

Returns

Random integer between 1 and RND_MAX

Definition at line 176 of file staticrand.cpp.

void static_rand_cone	(	int	num,
		vec3d *	out,
		vec3d *	in,
		float	max_angle,
		matrix *	orient
	)

Randomly perturb a vector around a given (normalized vector) or optional orientation matrix.

Parameters

num
out
in
max_angle
orient

Definition at line 129 of file staticrand.cpp.

int static_rand_range	(	int	num,
		int	min,
		int	max
	)

Return a random integer within a range. Note: min and max are inclusive.

Parameters

num	Seed input number
min	Minimum range integer to return
max	Maximum range integer to return

Returns

Random integer within the range

Definition at line 78 of file staticrand.cpp.

float static_randf

(

int

num

)

Return a random float in 0.0f .. 1.0f- (ie, it will never return 1.0f).

Parameters

num	Seed input number

Returns

Random value in 0.0f .. 1.0f- (ie, it will never return 1.0f).

Definition at line 61 of file staticrand.cpp.

float static_randf_alt

(

)

Get a random integer between 0 and 1.0.

Returns

Random float between 0 and 1.0

Definition at line 193 of file staticrand.cpp.

float static_randf_range	(	int	num,
		float	min,
		float	max
	)

Return a random float within a range. Note: min and max are inclusive.

Parameters

num	Seed input number
min	Minimum range float to return
max	Maximum range float to return

Returns

Random float within the range

Definition at line 95 of file staticrand.cpp.

void static_randvec	(	int	num,
		vec3d *	vp
	)

[To be described]

Parameters

num	Seed input number
vp	Vector

Definition at line 111 of file staticrand.cpp.

Variable Documentation

int Rnd_seed = 1

Definition at line 158 of file staticrand.cpp.

int Semirand[SEMIRAND_MAX]

Definition at line 17 of file staticrand.cpp.

int Semirand_inited = 0

Definition at line 16 of file staticrand.cpp.