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Bug fix (y and z axis) + pragma

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This commit is contained in:
Rémi Oudin 2018-02-13 17:06:23 +01:00
parent 15ee31c30e
commit 538930bd71
1 changed files with 14 additions and 14 deletions
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28
PerlinNoise.cpp
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@ -44,7 +44,7 @@ PerlinNoise::PerlinNoise(unsigned int seed) : ImplicitSurface(Point(0,0,0)) {
}
double PerlinNoise::operator() (double x, double y, double z) const {
return z - noise(x, y, 0);
return z - noise(x, 0, y);
}
double PerlinNoise::noise(double _x, double _y, double _z) const {
@ -60,31 +60,31 @@ double PerlinNoise::noise(double _x, double _y, double _z) const {
double v = fade(_y);
double w = fade(_z);
int A = p[X] + Y;
int AA = p[A] + Z;
int AB = p[A + 1] + Z;
int B = p[X + 1] + Y;
int BA = p[B] + Z;
int BB = p[B + 1] + Z;
int A = p[X] + Z;
int AA = p[A] + Y;
int AB = p[A + 1] + Y;
int B = p[X + 1] + Z;
int BA = p[B] + Y;
int BB = p[B + 1] + Y;
double res = lerp(
w,
lerp(
v,
lerp(u, grad(p[AA], _x, _y, _z), grad(p[BA], _x-1, _y, _z)),
lerp(u, grad(p[AB], _x, _y-1, _z), grad(p[BB], _x-1, _y-1, _z))
lerp(u, grad(p[AA], _x, _z, _y), grad(p[BA], _x-1, _z, _y)),
lerp(u, grad(p[AB], _x, _z-1, _y), grad(p[BB], _x-1, _z-1, _y))
),
lerp(
v,
lerp(
u,
grad(p[AA+1], _x, _y, _z-1),
grad(p[BA+1], _x-1, _y, _z-1)
grad(p[AA+1], _x, _z, _y-1),
grad(p[BA+1], _x-1, _z, _y-1)
),
lerp(
u,
grad(p[AB+1], _x, _y-1, _z-1),
grad(p[BB+1], _x-1, _y-1, _z-1)
grad(p[AB+1], _x, _z-1, _y-1),
grad(p[BB+1], _x-1, _z-1, _y-1)
)
)
);
@ -92,7 +92,7 @@ double PerlinNoise::noise(double _x, double _y, double _z) const {
}
double PerlinNoise::noise(double _x, double _y) const {
return noise(_x, _y, 0);
return noise(_x, 0, _y);
}
double PerlinNoise::fade(double t) const {