/// <inheritdoc />
protected override float Single(int seed, double x)
{
int x0 = Math2.Floor(x);
double xs;
switch (_noiseInterpolationType)
{
default:
case NoiseInterpolationType.Linear:
xs = x - x0;
break;
case NoiseInterpolationType.Hermite:
xs = Math2.CurveHermite(x - x0);
break;
case NoiseInterpolationType.Quintic:
xs = Math2.CurveQuintic(x - x0);
break;
}
return(Math2.Lerp(
ValueCoord1D(seed, x0),
ValueCoord1D(seed, x0 + 1),
xs));
}
/// <inheritdoc />
protected override float Single(int seed, double x, double y, double z)
{
int x0 = Math2.Floor(x);
int y0 = Math2.Floor(y);
int z0 = Math2.Floor(z);
int x1 = x0 + 1;
int y1 = y0 + 1;
int z1 = z0 + 1;
double xs, ys, zs;
switch (_noiseInterpolationType)
{
default:
case NoiseInterpolationType.Linear:
xs = x - x0;
ys = y - y0;
zs = z - z0;
break;
case NoiseInterpolationType.Hermite:
xs = Math2.CurveHermite(x - x0);
ys = Math2.CurveHermite(y - y0);
zs = Math2.CurveHermite(z - z0);
break;
case NoiseInterpolationType.Quintic:
xs = Math2.CurveQuintic(x - x0);
ys = Math2.CurveQuintic(y - y0);
zs = Math2.CurveQuintic(z - z0);
break;
}
return(Math2.Lerp(
Math2.Lerp(
Math2.Lerp(
ValueCoord3D(seed, x0, y0, z0),
ValueCoord3D(seed, x1, y0, z0),
xs),
Math2.Lerp(
ValueCoord3D(seed, x0, y1, z0),
ValueCoord3D(seed, x1, y1, z0),
xs),
ys),
Math2.Lerp(
Math2.Lerp(
ValueCoord3D(seed, x0, y0, z1),
ValueCoord3D(seed, x1, y0, z1),
xs),
Math2.Lerp(
ValueCoord3D(seed, x0, y1, z1),
ValueCoord3D(seed, x1, y1, z1),
xs),
ys),
zs));
}
/// <inheritdoc />
protected override float Single(int seed, double x, double y)
{
int x0 = Math2.Floor(x);
int y0 = Math2.Floor(y);
int x1 = x0 + 1;
int y1 = y0 + 1;
double xd0 = x - x0;
double yd0 = y - y0;
double xs, ys;
switch (_noiseInterpolationType)
{
default:
case NoiseInterpolationType.Linear:
xs = xd0;
ys = yd0;
break;
case NoiseInterpolationType.Hermite:
xs = Math2.CurveHermite(xd0);
ys = Math2.CurveHermite(yd0);
break;
case NoiseInterpolationType.Quintic:
xs = Math2.CurveQuintic(xd0);
ys = Math2.CurveQuintic(yd0);
break;
}
double xd1 = xd0 - 1.0f;
double yd1 = yd0 - 1.0f;
return(Math2.Lerp(
Math2.Lerp(
GradCoord2D(seed, x0, y0, xd0, yd0),
GradCoord2D(seed, x1, y0, xd1, yd0),
xs),
Math2.Lerp(
GradCoord2D(seed, x0, y1, xd0, yd1),
GradCoord2D(seed, x1, y1, xd1, yd1),
xs),
ys));
}