diff options
Diffstat (limited to 'source/cNoise.inc')
| -rw-r--r-- | source/cNoise.inc | 124 |
1 files changed, 0 insertions, 124 deletions
diff --git a/source/cNoise.inc b/source/cNoise.inc deleted file mode 100644 index 60fd2f394..000000000 --- a/source/cNoise.inc +++ /dev/null @@ -1,124 +0,0 @@ -
-#ifndef __C_NOISE_INC__
-#define __C_NOISE_INC__
-
-#include <math.h>
-
-
-
-
-
-/****************
- * Random value generator
- **/
-
-float cNoise::IntNoise( int a_X ) const
-{
- int x = ((a_X*m_Seed)<<13) ^ a_X;
- return ( 1.0f - ( (x * (x * x * 15731 + 789221) + 1376312589) & 0x7fffffff) / 1073741824.0f);
- // returns a float number in the range of [-1, 1]
-}
-
-
-
-
-
-float cNoise::IntNoise2D( int a_X, int a_Y ) const
-{
- int n = a_X + a_Y * 57 + m_Seed*57*57;
- n = (n<<13) ^ n;
- return ( 1.0f - ( (n * (n * n * 15731 + 789221) + 1376312589) & 0x7fffffff) / 1073741824.0f);
- // returns a float number in the range of [-1, 1]
-}
-
-
-
-
-
-float cNoise::IntNoise3D( int a_X, int a_Y, int a_Z ) const
-{
- int n = a_X + a_Y * 57 + a_Z * 57*57 + m_Seed*57*57*57;
- n = (n<<13) ^ n;
- return ( 1.0f - ( (n * (n * n * 15731 + 789221) + 1376312589) & 0x7fffffff) / 1073741824.0f);
- // returns a float number in the range of [-1, 1]
-}
-
-
-
-
-
-int cNoise::IntNoise1DInt( int a_X ) const
-{
- int x = ((a_X*m_Seed)<<13) ^ a_X;
- return ( (x * (x * x * 15731 + 789221) + 1376312589) & 0x7fffffff);
-}
-
-
-
-
-
-int cNoise::IntNoise2DInt( int a_X, int a_Y ) const
-{
- int n = a_X + a_Y * 57 + m_Seed*57*57;
- n = (n<<13) ^ n;
- return ( (n * (n * n * 15731 + 789221) + 1376312589) & 0x7fffffff);
-}
-
-
-
-
-
-int cNoise::IntNoise3DInt( int a_X, int a_Y, int a_Z ) const
-{
- int n = a_X + a_Y * 57 + a_Z * 57*57 + m_Seed*57*57*57;
- n = (n<<13) ^ n;
- return ( (n * (n * n * 15731 + 789221) + 1376312589) & 0x7fffffff);
-}
-
-
-
-
-
-/****************
- * Interpolation functions
- **/
-
-float cNoise::CubicInterpolate( float a_A, float a_B, float a_C, float a_D, float a_Pct )
-{
- float P = (a_D - a_C) - (a_A - a_B);
- float Q = (a_A - a_B) - P;
- float R = a_C - a_A;
- float S = a_B;
-
- return ((P * a_Pct + Q) * a_Pct + R) * a_Pct + S;
-}
-
-
-
-
-
-float cNoise::CosineInterpolate( float a_A, float a_B, float a_Pct )
-{
- const float ft = a_Pct * 3.1415927f;
- const float f = (1.f - cosf(ft)) * 0.5f;
- return a_A*(1-f) + a_B*f;
-}
-
-
-
-
-
-float cNoise::LinearInterpolate( float a_A, float a_B, float a_Pct )
-{
- return a_A*(1.f-a_Pct) + a_B*a_Pct;
-}
-
-
-
-
-
-#endif
-
-
-
-
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