double[,,] GenerateDensityMap(Chunk chunk)
{
var primitive = new SimplexPerlin
{
Quality = NoiseQuality.Best,
Seed = 1
};
var terrainFilter = new RidgedMultiFractal
{
Primitive3D = primitive,
Frequency = 1,
Gain = 3f,
Lacunarity = 2,
OctaveCount = 4,
Offset = 1,
SpectralExponent = 0.25f
};
// MultiFractal output seems to vary from 0 to 3ish
var outputScaler = new ScaleBias
{
SourceModule = terrainFilter,
Scale = 2 / 3f,
Bias = -1f
};
// The terrace seems to be useful for smoothing the lower parts while still allowing
// for dramatic mountains
var terrace = new Terrace()
{
SourceModule = outputScaler,
};
terrace.AddControlPoint(-1f);
//terrace.AddControlPoint(-0.5f);
//terrace.AddControlPoint(0f);
//terrace.AddControlPoint(0.5f);
terrace.AddControlPoint(2f);
//terrace.AddControlPoint(0.7f, 0.8f);
var inputScaler = new ScalePoint
{
SourceModule = terrace,
XScale = 0.01f,
YScale = 0.01f,
ZScale = 0.01f
};
var densityMap = new double[Chunk.XDimension + 1,Chunk.YDimension + 1,Chunk.ZDimension + 1];
for (int x = 0; x <= Chunk.XDimension; x += horizontalSampleRate)
{
for (int y = 0; y <= Chunk.YDimension; y += verticalSampleRate)
{
for (int z = 0; z <= Chunk.ZDimension; z += horizontalSampleRate)
{
float worldX = chunk.OriginInWorld.X + x;
float worldY = chunk.OriginInWorld.Y + y;
float worldZ = chunk.OriginInWorld.Z + z;
var noise = inputScaler.GetValue(worldX, worldY, worldZ);
// This applies a gradient to the noise based on height.
// The smaller the gradient value, the longer it takes to drive
// the entire fractal below zero and the more overhang/hole stuff
// we get.
var density = noise - (y * y * y / 600000f) + 2;
//var density = noise - (y / 10f) + 3;
densityMap[x, y, z] = density;
}
}
}
TriLerp(densityMap);
return densityMap;
}
/// <summary>
///
/// </summary>
protected void GenerateNoise()
{
EnabledInterface(false);
// Parse input ------------------------------------------------------------------------------------
int seed = ParseInt(_tbxSeed.Text, PrimitiveModule.DEFAULT_SEED);
float frequency = ParseFloat(_tbxFrequency.Text, FilterModule.DEFAULT_FREQUENCY);
float lacunarity = ParseFloat(_tbxLacunarity.Text, FilterModule.DEFAULT_LACUNARITY);
float gain = ParseFloat(_tbxGain.Text, FilterModule.DEFAULT_GAIN);
float offset = ParseFloat(_tbxOffset.Text, FilterModule.DEFAULT_OFFSET);
float exponent = ParseFloat(_tbxExponent.Text, FilterModule.DEFAULT_SPECTRAL_EXPONENT);
var octaveCount = (int) _nstpOctave.Value;
bool seamless = _chkbx.Checked;
GradientColor gradient = GradientColor.GRAYSCALE;
NoiseQuality quality = PrimitiveModule.DEFAULT_QUALITY;
var primitive = NoisePrimitive.ImprovedPerlin;
var filter = NoiseFilter.SumFractal;
try
{
quality = (NoiseQuality) Enum.Parse(typeof (NoiseQuality), _cbxQuality.Text);
}
catch
{
MessageBox.Show(
String.Format("Unknown quality '{0}'", _cbxQuality.Text),
"Libnoise Error",
MessageBoxButtons.OK,
MessageBoxIcon.Error
);
EnabledInterface(true);
return;
}
try
{
primitive = (NoisePrimitive) Enum.Parse(typeof (NoisePrimitive), _cbxPrimitive.Text);
}
catch
{
MessageBox.Show(
String.Format("Unknown primitive '{0}'", _cbxPrimitive.Text),
"Libnoise Error",
MessageBoxButtons.OK,
MessageBoxIcon.Error
);
EnabledInterface(true);
return;
}
try
{
filter = (NoiseFilter) Enum.Parse(typeof (NoiseFilter), _cbxFilter.Text);
}
catch
{
MessageBox.Show(
String.Format("Unknown filter '{0}'", _cbxFilter.Text),
"Libnoise Error",
MessageBoxButtons.OK,
MessageBoxIcon.Error
);
EnabledInterface(true);
return;
}
switch (_cbxGradient.Text)
{
case "Grayscale":
gradient = GradientColor.GRAYSCALE;
break;
case "Terrain":
gradient = GradientColor.TERRAIN;
break;
}
// Create module tree ------------------------------------------------------------------------------------
PrimitiveModule pModule = null;
switch (primitive)
{
case NoisePrimitive.Constant:
pModule = new Constant(offset);
break;
case NoisePrimitive.Cylinders:
pModule = new Cylinders(offset);
seamless = false;
break;
case NoisePrimitive.Spheres:
pModule = new Spheres(offset);
seamless = false;
break;
case NoisePrimitive.BevinsGradient:
pModule = new BevinsGradient();
break;
case NoisePrimitive.BevinsValue:
pModule = new BevinsValue();
break;
case NoisePrimitive.ImprovedPerlin:
pModule = new ImprovedPerlin();
break;
case NoisePrimitive.SimplexPerlin:
pModule = new SimplexPerlin();
break;
}
pModule.Quality = quality;
pModule.Seed = seed;
FilterModule fModule = null;
ScaleBias scale = null;
switch (filter)
{
case NoiseFilter.Pipe:
fModule = new Pipe();
break;
case NoiseFilter.SumFractal:
fModule = new SumFractal();
break;
case NoiseFilter.SinFractal:
fModule = new SinFractal();
break;
case NoiseFilter.MultiFractal:
fModule = new MultiFractal();
// Used to show the difference with our gradient color (-1 + 1)
scale = new ScaleBias(fModule, 1f, -0.8f);
break;
case NoiseFilter.Billow:
fModule = new Billow();
((Billow) fModule).Bias = -0.2f;
((Billow) fModule).Scale = 2f;
break;
case NoiseFilter.HeterogeneousMultiFractal:
fModule = new HeterogeneousMultiFractal();
// Used to show the difference with our gradient color (-1 + 1)
scale = new ScaleBias(fModule, -1f, 2f);
break;
case NoiseFilter.HybridMultiFractal:
fModule = new HybridMultiFractal();
// Used to show the difference with our gradient color (-1 + 1)
scale = new ScaleBias(fModule, 0.7f, -2f);
break;
case NoiseFilter.RidgedMultiFractal:
fModule = new RidgedMultiFractal();
// Used to show the difference with our gradient color (-1 + 1)
scale = new ScaleBias(fModule, 0.9f, -1.25f);
break;
case NoiseFilter.Voronoi:
fModule = new Voronoi();
break;
}
fModule.Frequency = frequency;
fModule.Lacunarity = lacunarity;
fModule.OctaveCount = octaveCount;
fModule.Offset = offset;
fModule.Offset = offset;
fModule.Gain = gain;
fModule.Primitive3D = (IModule3D) pModule;
IModule3D finalModule;
if (scale == null)
finalModule = (IModule3D) fModule;
else
finalModule = scale;
NoiseMapBuilder projection;
switch (_cbxProjection.Text)
{
case "Spherical":
projection = new NoiseMapBuilderSphere();
((NoiseMapBuilderSphere) projection).SetBounds(-90f, 90f, -180f, 180f); // degrees
break;
case "Cylindrical":
projection = new NoiseMapBuilderCylinder();
((NoiseMapBuilderCylinder) projection).SetBounds(-180f, 180f, -10f, 10f);
break;
case "Planar":
default:
float bound = 2f;
projection = new NoiseMapBuilderPlane(bound, bound*2, bound, bound*2, seamless);
//projection = new NoiseMapBuilderPlane(-bound, bound, -bound, bound, seamless);
//projection = new NoiseMapBuilderPlane(0, bound, 0, bound, seamless);
break;
}
int width = 0;
int height = 0;
switch (_cbxSize.Text)
{
case "256 x 256":
width = 256;
height = 256;
break;
case "512 x 512":
width = 512;
height = 512;
break;
case "1024 x 1024":
width = 1024;
height = 1024;
break;
case "256 x 128":
width = 256;
height = 128;
break;
case "512 x 256":
width = 512;
height = 256;
break;
case "1024 x 512":
width = 1024;
height = 512;
break;
case "2048 x 1024":
width = 2048;
height = 1024;
break;
default:
case "128 x 128":
width = 128;
height = 128;
break;
}
// ------------------------------------------------------------------------------------------------
// 0 - Initializing
_prbarRenderProgression.Visible = true;
_lblProgressPercent.Visible = true;
_prbarRenderProgression.Value = 0;
;
_lblProgressPercent.Text = "";
_lblLog.Text = String.Format("Create a {0} image with a {1} projection\n", _cbxSize.Text,
_cbxProjection.Text);
var watchDog = new Stopwatch();
TimeSpan ts;
double elaspedTime = 0;
//
// ------------------------------------------------------------------------------------------------
// 1 - Build the noise map
watchDog.Reset();
_prbarRenderProgression.Value = 0;
_lblLog.Text += "Building noise map ... ";
var noiseMap = new NoiseMap();
/*
// ShapeFilter test
Bitmap bmpShape = new Bitmap("smileyShape.bmp");
BitmapAdaptater bmShapeAdaptater = new BitmapAdaptater(bmpShape);
ShapeFilter shapeFilter = new ShapeFilter();
shapeFilter.Shape = bmShapeAdaptater;
projection.Filter = shapeFilter;
*/
projection.SetSize(width, height);
projection.SourceModule = finalModule;
projection.NoiseMap = noiseMap;
projection.CallBack = delegate(int line)
{
line++;
watchDog.Stop();
//Process message
Application.DoEvents();
_prbarRenderProgression.Value = (line*100/height);
_lblProgressPercent.Text = String.Format("{0} % - {1} line(s)", _prbarRenderProgression.Value, line);
watchDog.Start();
};
watchDog.Start();
projection.Build();
watchDog.Stop();
ts = watchDog.Elapsed;
elaspedTime += ts.TotalMilliseconds;
_lblLog.Text += String.Format("{0:00}:{1:00} {2:00},{3:0000}\n",
ts.Hours, ts.Minutes,
ts.Seconds, ts.Milliseconds*10
);
// ------------------------------------------------------------------------------------------------
// 2 - Render image
// Create a renderer, BitmapAdaptater create a System.Drawing.Bitmap on the fly
watchDog.Reset();
_prbarRenderProgression.Value = 0;
_lblLog.Text += "Rendering image ... ";
var renderer = new ImageRenderer();
renderer.NoiseMap = noiseMap;
renderer.Gradient = gradient;
renderer.LightBrightness = 2;
renderer.LightContrast = 8;
//renderer.LightEnabled = true;
// Libnoise image struct strategy
//Graphics.Tools.Noise.Renderer.Image image = new Graphics.Tools.Noise.Renderer.Image();
//renderer.Image = image;
// Dotnet Bitmap Strategy
var bmpAdaptater = new BitmapAdaptater(width, height);
renderer.Image = bmpAdaptater;
renderer.CallBack = delegate(int line)
{
line++;
watchDog.Stop();
//Process message
Application.DoEvents();
_prbarRenderProgression.Value = (line*100/height);
_lblProgressPercent.Text = String.Format("{0} % - {1} line(s)", _prbarRenderProgression.Value, line);
watchDog.Start();
};
// Render the texture.
watchDog.Start();
renderer.Render();
watchDog.Stop();
ts = watchDog.Elapsed;
elaspedTime += ts.TotalMilliseconds;
_lblLog.Text += String.Format("{0:00}:{1:00} {2:00},{3:0000}\n",
ts.Hours, ts.Minutes,
ts.Seconds, ts.Milliseconds*10
);
//----------------------------------------
// Normalmap rendering test
//
/*
BitmapAdaptater nmapAdaptater = new BitmapAdaptater(width, height);
NormalMapRenderer nmap = new NormalMapRenderer();
nmap.Image = nmapAdaptater;
nmap.BumpHeight = 30.0f;
nmap.NoiseMap = noiseMap;
nmap.Render();
nmapAdaptater.Bitmap.Save("normalMap.png", ImageFormat.Png);
*/
//----------------------------------------
/*
Heightmap8 heightmap8 = new Heightmap8();
Heightmap8Renderer heightmapRenderer = new Heightmap8Renderer();
heightmapRenderer.Heightmap = heightmap8;
*/
/*
Heightmap16 heightmap16 = new Heightmap16();
Heightmap16Renderer heightmapRenderer = new Heightmap16Renderer();
heightmapRenderer.Heightmap = heightmap16;
*/
/*
Heightmap32 heightmap32 = new Heightmap32();
Heightmap32Renderer heightmapRenderer = new Heightmap32Renderer();
heightmapRenderer.Heightmap = heightmap32;
*/
/*
heightmapRenderer.NoiseMap = noiseMap;
heightmapRenderer.ExactFit();
heightmapRenderer.Render();
*/
/*
Heightmap16RawWriter rawWriter = new Heightmap16RawWriter();
rawWriter.Heightmap = heightmap16;
rawWriter.Filename = "heightmap16.raw";
rawWriter.WriteFile();
*/
// ------------------------------------------------------------------------------------------------
// 3 - Painting
// Save the file
//bmpAdaptater.Bitmap.Save("rendered.png",ImageFormat.Png);
_imageRendered.Width = width;
_imageRendered.Height = height;
//_imageRendered.Image = _bitmap;
_imageRendered.Image = bmpAdaptater.Bitmap;
if (_imageRendered.Width > _panImageViewport.Width)
_imageRendered.Left = 0;
else
_imageRendered.Left = (_panImageViewport.Width - _imageRendered.Width)/2;
if (_imageRendered.Height > _panImageViewport.Height)
_imageRendered.Top = 0;
else
_imageRendered.Top = (_panImageViewport.Height - _imageRendered.Height)/2;
if (_imageRendered.Width > _panImageViewport.Width || _imageRendered.Height > _panImageViewport.Height)
{
_imageRendered.Anchor = (AnchorStyles.Left | AnchorStyles.Top);
_panImageViewport.AutoScroll = true;
}
else
_panImageViewport.AutoScroll = false;
// ----------------------------------------------------------------
ts = TimeSpan.FromMilliseconds(elaspedTime);
// Format and display the TimeSpan value.
_lblLog.Text += String.Format("Duration : {0:00}:{1:00} {2:00},{3:0000}\n",
ts.Hours, ts.Minutes,
ts.Seconds, ts.Milliseconds*10
);
EnabledInterface(true);
_prbarRenderProgression.Value = 0;
_lblProgressPercent.Text = "";
_prbarRenderProgression.Visible = false;
_lblProgressPercent.Visible = false;
}