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Optimize noise implementations

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This commit is contained in:
kwolekr 2014-12-08 03:25:14 -05:00
parent 0183c05ee0
commit 2a7c6d27b3
2 changed files with 112 additions and 113 deletions
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16
src/noise.h
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@ -127,8 +127,9 @@ public:
int sx;
int sy;
int sz;
float *noisebuf;
float *buf;
float *noise_buf;
float *gradient_buf;
float *persist_buf;
float *result;
Noise(NoiseParams *np, int seed, int sx, int sy, int sz=1);
@ -137,7 +138,6 @@ public:
void setSize(int sx, int sy, int sz=1);
void setSpreadFactor(v3f spread);
void setOctaves(int octaves);
void resizeNoiseBuf(bool is3d);
void gradientMap2D(
float x, float y,
@ -151,8 +151,13 @@ public:
float *perlinMap2D(float x, float y, float *persistence_map=NULL);
float *perlinMap3D(float x, float y, float z, float *persistence_map=NULL);
void updateResults(float g, float *gmap, float *persistence_map, size_t bufsize);
void transformNoiseMap();
private:
void allocBuffers();
void resizeNoiseBuf(bool is3d);
void updateResults(float g, float *gmap, float *persistence_map, size_t bufsize);
};
// Return value: -1 ... 1
@ -174,7 +179,8 @@ float noise3d_perlin(float x, float y, float z, int seed,
float noise3d_perlin_abs(float x, float y, float z, int seed,
int octaves, float persistence, bool eased=false);
inline float easeCurve(float t) {
inline float easeCurve(float t)
{
return t * t * t * (t * (6.f * t - 15.f) + 10.f);
}