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| author | Mattes D <github@xoft.cz> | 2014-07-29 17:46:57 +0200 |
|---|---|---|
| committer | Mattes D <github@xoft.cz> | 2014-07-29 17:46:57 +0200 |
| commit | 8287f2d93354a584bb44216b4b59d28d9a5f0fb2 (patch) | |
| tree | 767b4c95a3ce907cb1f6162450c10dca39518e7a /src/Noise.h | |
| parent | DistortedHeightmap: Now generates gravel in deep ocean. (diff) | |
| parent | Added a missing include for abs(float). (diff) | |
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Diffstat (limited to 'src/Noise.h')
| -rw-r--r-- | src/Noise.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/src/Noise.h b/src/Noise.h index 48a1c73f7..4cf8d4ad8 100644 --- a/src/Noise.h +++ b/src/Noise.h @@ -5,6 +5,12 @@ #pragma once +#include <cmath> + + + + + // Some settings #define NOISE_DATATYPE float @@ -33,6 +39,12 @@ public: INLINE NOISE_DATATYPE IntNoise2D(int a_X, int a_Y) const; INLINE NOISE_DATATYPE IntNoise3D(int a_X, int a_Y, int a_Z) const; + // Return a float number in the specified range: + INLINE NOISE_DATATYPE IntNoise2DInRange(int a_X, int a_Y, float a_Min, float a_Max) const + { + return a_Min + std::abs(IntNoise2D(a_X, a_Y)) * (a_Max - a_Min); + } + // Note: These functions have a mod8-irregular chance - each of the mod8 remainders has different chance of occurrence. Divide by 8 to rectify. INLINE int IntNoise1DInt(int a_X) const; INLINE int IntNoise2DInt(int a_X, int a_Y) const; |