Noise.cpp File Reference

Class to define Perlin noise. More...

#include <cmath>
#include <cstdio>
#include <cstdlib>
#include <ctime>
#include "BLI_compiler_attrs.h"
#include "BLI_rand.h"
#include "BLI_sys_types.h"
#include "Noise.h"

Go to the source code of this file.

Namespaces
namespace	Freestyle
	inherits from class Rep

Macros
#define	SCURVE(a)   ((a) * (a) * (3.0 - 2.0 * (a)))
#define	BM   0xff
#define	N   0x1000
#define	LERP(t, a, b)   ((a) + (t) * ((b) - (a)))
#define	SETUP(i, b0, b1, r0, r1)
#define	AT2(rx, ry)   ((rx) * q[0] + (ry) * q[1])
#define	AT3(rx, ry, rz)   ((rx) * q[0] + (ry) * q[1] + (rz) * q[2])

Functions
static void	Freestyle::normalize2 (float v[2])
static void	Freestyle::normalize3 (float v[3])

Detailed Description

Class to define Perlin noise.

Definition in file Noise.cpp.

Macro Definition Documentation

AT2

#define AT2	(		rx,
			ry )   ((rx) * q[0] + (ry) * q[1])

Referenced by Freestyle::Noise::smoothNoise2().

AT3

#define AT3	(		rx,
			ry,
			rz )   ((rx) * q[0] + (ry) * q[1] + (rz) * q[2])

Referenced by Freestyle::Noise::smoothNoise3().

BM

#define BM   0xff

Definition at line 38 of file Noise.cpp.

LERP

#define LERP	(		t,
			a,
			b )   ((a) + (t) * ((b) - (a)))

Definition at line 45 of file Noise.cpp.

Referenced by Freestyle::Noise::smoothNoise1(), Freestyle::Noise::smoothNoise2(), and Freestyle::Noise::smoothNoise3().

N

#define N   0x1000

Definition at line 39 of file Noise.cpp.

SCURVE

#define SCURVE

(

a

)

((a) * (a) * (3.0 - 2.0 * (a)))

Definition at line 23 of file Noise.cpp.

Referenced by Freestyle::Noise::smoothNoise1(), Freestyle::Noise::smoothNoise2(), and Freestyle::Noise::smoothNoise3().

SETUP

#define SETUP	(		i,
			b0,
			b1,
			r0,
			r1 )

Value:

  { \
    (t) = (i) + (N); \
    (r0) = modff((t), &(u)); \
    (r1) = (r0)-1.0; \
    (b0) = int(u) & BM; \
    (b1) = ((b0) + 1) & BM; \
  } \
  (void)0

Definition at line 47 of file Noise.cpp.