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Clean up Noise macros

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This commit is contained in:
kwolekr 2014-12-11 02:53:10 -05:00
parent c07f15e910
commit fb80a7c111
5 changed files with 108 additions and 67 deletions
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55
src/noise.cpp
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@ -314,7 +314,60 @@ float contour(float v)
}
///////////////////////// [ New perlin stuff ] ////////////////////////////
///////////////////////// [ New noise ] ////////////////////////////
float NoisePerlin2D(NoiseParams *np, float x, float y, int seed)
{
float a = 0;
float f = 1.0;
float g = 1.0;
x /= np->spread.X;
y /= np->spread.Y;
seed += np->seed;
for (size_t i = 0; i < np->octaves; i++) {
float noiseval = noise2d_gradient(x * f, y * f, seed + i,
np->flags & (NOISE_FLAG_DEFAULTS | NOISE_FLAG_EASED));
if (np->flags & NOISE_FLAG_ABSVALUE)
noiseval = fabs(noiseval);
a += g * noiseval;
f *= np->lacunarity;
g *= np->persist;
}
return np->offset + a * np->scale;
}
float NoisePerlin3D(NoiseParams *np, float x, float y, float z, int seed)
{
float a = 0;
float f = 1.0;
float g = 1.0;
x /= np->spread.X;
y /= np->spread.Y;
z /= np->spread.Z;
seed += np->seed;
for (size_t i = 0; i < np->octaves; i++) {
float noiseval = noise3d_gradient(x * f, y * f, z * f, seed + i,
np->flags & NOISE_FLAG_EASED);
if (np->flags & NOISE_FLAG_ABSVALUE)
noiseval = fabs(noiseval);
a += g * noiseval;
f *= np->lacunarity;
g *= np->persist;
}
return np->offset + a * np->scale;
}
Noise::Noise(NoiseParams *np_, int seed, int sx, int sy, int sz)