diff options
Diffstat (limited to 'source/cNoise.inc')
| -rw-r--r-- | source/cNoise.inc | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/source/cNoise.inc b/source/cNoise.inc index cde1f1609..e80c1f268 100644 --- a/source/cNoise.inc +++ b/source/cNoise.inc @@ -16,6 +16,7 @@ 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]
}
@@ -27,6 +28,7 @@ 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]
}
@@ -38,6 +40,7 @@ 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]
}
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