public static IFunction2D FractionalBrownianMotion(this INoiseProvider provider, Random rng, double scale, int octaves, double persistence = 0.5, double lacunarity = 2.0, Func<double, double> octaveModifier = null, double? xPeriod = null, double? yPeriod = null, SampleMode mode = SampleMode.Sample2D)
{
return new FractionalBrownianMotionFunction(provider, rng, scale, octaves, persistence, lacunarity, octaveModifier, xPeriod, yPeriod, mode);
}
private void buttonGenerate_Click(object sender, EventArgs e)
{
if (_workerThread != null)
{
_workerThread.Abort();
_workerThread = null;
buttonGenerate.Text = "Generate Images";
return;
}
try
{
_octaves = GetIntValue(textBoxOctaves, "Octaves", 0, 51);
_scale = GetDoubleValue(textBoxScale, "Scale", 0.0);
_persistence = GetDoubleValue(textBoxPersistence, "Persistence", 0.0);
_lacunarity = GetDoubleValue(textBoxLacunarity, "Lacunarity", 0.0);
_size = GetIntValue(textBoxSize, "Size", 0, 10001);
_power = GetDoubleValue(textBoxPower, "Power", 0.0);
_mode = (SampleMode)comboBoxMode.SelectedIndex;
_absoluteValue = checkBoxAbsoluteValue.Checked;
_normalize = checkBoxNormalize.Checked;
}
catch (Exception exception)
{
MessageBox.Show(exception.Message, "Input error", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
_workerThread = new Thread(DoWork);
// Give higher thread priority for more consistent benchmarks.
_workerThread.Priority = ThreadPriority.AboveNormal;
_workerThread.IsBackground = true;
_workerThread.Start();
pictureBoxSimplex.Image = null;
pictureBoxSimpletic.Image = null;
pictureBoxOpenSimplex.Image = null;
buttonSaveSimplex.Enabled = false;
buttonSaveSimpletic.Enabled = false;
buttonSaveOpenSimplex.Enabled = false;
buttonSaveComparison.Enabled = false;
textBoxSimplex.Text = "Loading...";
textBoxSimpletic.Text = "Loading...";
textBoxOpenSimplex.Text = "Loading...";
buttonGenerate.Text = "Cancel";
}
public FractionalBrownianMotionFunction(INoiseProvider provider, Random rng, double scale, int octaves, double persistence = 0.5, double lacunarity = 2.0, Func<double, double> octaveModifier = null, double? xPeriod = null, double? yPeriod = null, SampleMode mode = SampleMode.Sample2D)
{
_octaveModifier = octaveModifier;
_octaves = new Tuple<double, IFunction2D>[octaves];
bool tiling = xPeriod != null || yPeriod != null;
if (tiling && xPeriod == null)
{
xPeriod = yPeriod;
}
if (tiling && yPeriod == null)
{
yPeriod = xPeriod;
}
_maxAmplitude = 0.0;
var amplitude = 1.0;
var frequency = scale;
for (var i = 0; i < octaves; i++)
{
IFunction2D noise;
switch (mode)
{
case SampleMode.Sample2D:
noise = provider.Create2D(rng, frequency);
break;
case SampleMode.Slice3D:
noise = provider.Slice3D(rng, frequency);
break;
case SampleMode.Slice4D:
noise = provider.Slice4D(rng, frequency);
break;
case SampleMode.Tileable2D:
noise = provider.Create2D(rng, frequency, xPeriod.Value, yPeriod.Value);
break;
default:
throw new InvalidOperationException();
}
_octaves[i] = Tuple.Create(amplitude, noise);
_maxAmplitude += amplitude;
amplitude *= persistence;
frequency *= lacunarity;
}
}
/// <summary>
///
/// </summary>
/// <param name="interval"></param>
/// <param name="countX"></param>
/// <param name="countY"></param>
/// <param name="wrapModeX"></param>
/// <param name="wrapModeY"></param>
/// <param name="sampleMode"></param>
public GridVectorField2d(Interval2d interval, int countX, int countY, WrapMode wrapModeX, WrapMode wrapModeY, SampleMode sampleMode = SampleMode.Linear)
: base(interval, countX, countY, wrapModeX, wrapModeY, sampleMode)
{
}
/// <summary>
///
/// </summary>
/// <param name="grid"></param>
/// <param name="sampleMode"></param>
public GridField3d(Grid3d grid, SampleMode sampleMode = SampleMode.Linear)
: base(grid)
{
_values = new T[Count];
SampleMode = sampleMode;
}
/// <summary>
///
/// </summary>
/// <param name="other"></param>
/// <param name="sampleMode"></param>
public GridVectorField2d(Grid2d other, SampleMode sampleMode = SampleMode.Linear)
: base(other, sampleMode)
{
}
/// <summary>
///
/// </summary>
/// <param name="origin"></param>
/// <param name="scale"></param>
/// <param name="countX"></param>
/// <param name="countY"></param>
/// <param name="wrapModeX"></param>
/// <param name="wrapModeY"></param>
/// <param name="sampleMode"></param>
public GridVectorField2d(Vec2d origin, Vec2d scale, int countX, int countY, WrapMode wrapModeX, WrapMode wrapModeY, SampleMode sampleMode = SampleMode.Linear)
: base(origin, scale, countX, countY, wrapModeX, wrapModeY, sampleMode)
{
}
/// <summary>
///
/// </summary>
/// <param name="origin"></param>
/// <param name="scale"></param>
/// <param name="countX"></param>
/// <param name="countY"></param>
/// <param name="countZ"></param>
/// <param name="wrapModeX"></param>
/// <param name="wrapModeY"></param>
/// <param name="wrapModeZ"></param>
/// <param name="sampleMode"></param>
public GridScalarField3d(Vec3d origin, Vec3d scale, int countX, int countY, int countZ, WrapMode wrapModeX, WrapMode wrapModeY, WrapMode wrapModeZ, SampleMode sampleMode = SampleMode.Linear)
: base(origin, scale, countX, countY, countZ, wrapModeX, wrapModeY, wrapModeZ, sampleMode)
{
}
/// <summary>
///
/// </summary>
/// <param name="interval"></param>
/// <param name="countX"></param>
/// <param name="countY"></param>
/// <param name="countZ"></param>
/// <param name="wrapMode"></param>
/// <param name="sampleMode"></param>
public GridScalarField3d(Interval3d interval, int countX, int countY, int countZ, WrapMode wrapMode = WrapMode.Clamp, SampleMode sampleMode = SampleMode.Linear)
: base(interval, countX, countY, countZ, wrapMode, sampleMode)
{
}
/// <summary>
///
/// </summary>
/// <param name="other"></param>
/// <param name="sampleMode"></param>
public GridScalarField3d(Grid3d other, SampleMode sampleMode = SampleMode.Linear)
: base(other, sampleMode)
{
}
/// <summary>
///
/// </summary>
/// <param name="origin"></param>
/// <param name="scale"></param>
/// <param name="countX"></param>
/// <param name="countY"></param>
/// <param name="wrapMode"></param>
/// <param name="sampleMode"></param>
public GridScalarField2d(Vec2d origin, Vec2d scale, int countX, int countY, WrapMode wrapMode = WrapMode.Clamp, SampleMode sampleMode = SampleMode.Linear)
: base(origin, scale, countX, countY, wrapMode, sampleMode)
{
}
/// <summary>
///
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void LinearClicked(object sender, EventArgs e)
{
_sampleMode = SampleMode.Linear;
ExpireSolution(true);
}
/// <summary>
///
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void NearestClicked(object sender, EventArgs e)
{
_sampleMode = SampleMode.Nearest;
ExpireSolution(true);
}
/// <summary>
///
/// </summary>
/// <param name="origin"></param>
/// <param name="scale"></param>
/// <param name="countX"></param>
/// <param name="countY"></param>
/// <param name="countZ"></param>
/// <param name="wrapMode"></param>
/// <param name="sampleMode"></param>
public GridVectorField3d(Vec3d origin, Vec3d scale, int countX, int countY, int countZ, WrapMode wrapMode = WrapMode.Clamp, SampleMode sampleMode = SampleMode.Linear)
: base(origin, scale, countX, countY, countZ, wrapMode, sampleMode)
{
}
