/// <summary>
/// Reads from the provided file name all parameters and data for a
/// heightmap. If the data for the heightmap does not exist, then
/// no data is written to the provided texture.
/// </summary>
/// <param name='fileName'>
/// The file name. This can be relative or fully-qualified.
/// </param>
/// <param name='no'>
/// The <see cref="NormalOptions" /> that will store read-in parameters.
/// </param>
/// <param name='co'>
/// The <see cref="CloudOptions" /> that will store read-in parameters for
/// <see cref="CloudFractal" />.
/// </param>
/// <param name='wo'>
/// The <see cref="WorleyOptions" /> that will store read-in parameters for
/// <see cref="WorleyNoise" />.
/// </param>
/// <param name='tex'>
/// The <code>Texture2D</code> containing the heightmap data.
/// </param>
public static void Read(string fileName, ref NormalOptions no,
ref CloudOptions co, ref VoronoiOptions vo,
ref Texture2D tex)
{
using(BinaryReader r = new BinaryReader(File.OpenRead(fileName)))
{
no.size = r.ReadInt32();
no.seed = r.ReadInt32();
no.cloudInf = r.ReadSingle();
no.voronoiInf = r.ReadSingle();
no.useThermalErosion = r.ReadBoolean();
no.useHydroErosion = r.ReadBoolean();
no.showSeams = r.ReadBoolean();
co.upperLeftStart = r.ReadSingle();
co.lowerLeftStart = r.ReadSingle();
co.lowerRightStart = r.ReadSingle();
co.upperRightStart = r.ReadSingle();
vo.metric = (DistanceFunctions.DistanceMetric)r.ReadInt32();
vo.combiner = (CombinerFunctions.CombineFunction)r.ReadInt32();
vo.numberOfFeaturePoints = r.ReadInt32();
vo.numberOfSubregions = r.ReadInt32();
vo.multiplier = r.ReadSingle();
tex.Resize(no.size, no.size);
int bLeft = (int)(r.BaseStream.Length - r.BaseStream.Position);
if(bLeft > 0)
tex.LoadImage(r.ReadBytes(bLeft));
}
}
public VoronoiDiagram(int size, int seed, VoronoiOptions options)
{
mSize = size;
delDistanceFunc = DistanceFunctions.GetDistanceFunction(options.metric);
delCombiningFunc = CombinerFunctions.GetFunction(options.combiner);
mNumFeaturePoints = options.numberOfFeaturePoints;
mNumSubregions = options.numberOfSubregions;
mMultiplier = options.multiplier;
aFeaturePoints = new int[0];
mRNG = new LCGRandom(seed);
}
/// <summary>
/// Overload for <see cref="Write" /> that does not have texture data.
/// </summary>
/// <param name='fileName'>
/// The file name. This can be relative or fully-qualified.
/// </param>
/// <param name='no'>
/// The <see cref="NormalOptions" /> to write.
/// </param>
/// <param name='co'>
/// The <see cref="CloudOptions" /> to write.
/// </param>
/// <param name='wo'>
/// The <see cref="WorleyOptions" /> to write.
/// </param>
/// <param name='tex'>
/// The <code>Texture2D</code> containing the heightmap data.
/// </param>
public static void Write(string fileName, NormalOptions no, CloudOptions co,
VoronoiOptions vo)
{
Write(fileName, no, co, vo, null);
}
/// <summary>
/// Write the specified the heightmap and all paramaters to the provided
/// file name.
/// </summary>
/// <param name='fileName'>
/// The file name. This can be relative or fully-qualified.
/// </param>
/// <param name='no'>
/// The <see cref="NormalOptions" /> to write.
/// </param>
/// <param name='co'>
/// The <see cref="CloudOptions" /> to write.
/// </param>
/// <param name='wo'>
/// The <see cref="WorleyOptions" /> to write.
/// </param>
/// <param name='tex'>
/// The <code>Texture2D</code> containing the heightmap data.
/// </param>
/// <description>
/// This uses a <code>BinaryWriter</code> to convert all data into binary
/// data for writing.
/// </description>
public static void Write(string fileName, NormalOptions no, CloudOptions co,
VoronoiOptions vo, Texture2D tex)
{
//if file already exists, will overwrite without warning
using(BinaryWriter w = new BinaryWriter(File.Open(fileName+".emb",
FileMode.Create)))
{
w.Write(no.size);
w.Write(no.seed);
w.Write(no.cloudInf);
w.Write(no.voronoiInf);
w.Write(no.useThermalErosion);
w.Write(no.useHydroErosion);
w.Write(no.showSeams);
w.Write(co.upperLeftStart);
w.Write(co.lowerLeftStart);
w.Write(co.lowerRightStart);
w.Write(co.upperRightStart);
w.Write((int)vo.metric);
w.Write((int)vo.combiner);
w.Write(vo.numberOfFeaturePoints);
w.Write(vo.numberOfSubregions);
w.Write(vo.multiplier);
if(tex != null)
w.Write(tex.EncodeToPNG());
}
}
public TerrainGenerator(NormalOptions normalOpt, CloudOptions cloudOpt, VoronoiOptions voronoiOpt)
{
Init(normalOpt, cloudOpt, voronoiOpt);
}
private void Init(NormalOptions normalOpt, CloudOptions cloudOpt, VoronoiOptions voronoiOpt)
{
_normalOpt = normalOpt;
_cloudOpt = cloudOpt;
_voronoiOpt = voronoiOpt;
_cfGen = new CloudFractal(_normalOpt.size, _normalOpt.seed, _cloudOpt);
_vnGen = new VoronoiDiagram(_normalOpt.size, _normalOpt.seed, _voronoiOpt);
_heightMap = new float[_normalOpt.size * _normalOpt.size];
}
