double InterpolatedNoise(double x, double y){
int int_X, int_Y;
double fractional_X, fractional_Y, v1, v2, v3, v4, i1, i2;
int_X = (int)floor(x); //不要问我为毛用floor，c++默认居然TM的是向零取整的
fractional_X = x - int_X;
int_Y = (int)floor(y);
fractional_Y = y - int_Y;
v1 = SmoothedNoise(int_X, int_Y);
v2 = SmoothedNoise(int_X + 1, int_Y);
v3 = SmoothedNoise(int_X, int_Y + 1);
v4 = SmoothedNoise(int_X + 1, int_Y + 1);
i1 = Interpolate(v1, v2, fractional_X);
i2 = Interpolate(v3, v4, fractional_X);
return Interpolate(i1, i2, fractional_Y);
}
float InterpolatedNoise(float x, float y){
int int_X, int_Y;
float fractional_X, fractional_Y, v1, v2, v3, v4, i1, i2;
int_X = int(x);
fractional_X = x - int_X;
int_Y = int(y);
fractional_Y = y - int_Y;
if (NoiseSmoothed == 1){
v1 = SmoothedNoise((float)int_X, (float)int_Y);
v2 = SmoothedNoise((float)int_X + 1, (float)int_Y);
v3 = SmoothedNoise((float)int_X, (float)int_Y + 1);
v4 = SmoothedNoise((float)int_X + 1, (float)int_Y + 1);
}
else{
v1 = Noise(int_X, int_Y);
v2 = Noise(int_X + 1, int_Y);
v3 = Noise(int_X, int_Y + 1);
v4 = Noise(int_X + 1, int_Y + 1);
}
i1 = Interpolate(v1, v2, fractional_X);
i2 = Interpolate(v3, v4, fractional_X);
return Interpolate(i1, i2, fractional_Y);
}
