public Texture GenerateTexture(Size size, DataArea area, Device gDevice, GDALReader dataSrc)
{
Texture texture = new Texture(gDevice, size.Width, size.Height, 0, Usage.None, Format.A8R8G8B8, Pool.Managed);
lock (this)
{
// find bands to use
int r, g, b;
dataSrc.Info.GetRGABands(out r, out g, out b);
Size nativeSz = dataSrc.Info.Resolution;
Band rBand = dataSrc.GetRasterBand(r + 1);
Band gBand = dataSrc.GetRasterBand(g + 1);
Band bBand = dataSrc.GetRasterBand(b + 1);
// Note: This *should* work
rData = new byte[nativeSz.Width * nativeSz.Height];
gData = new byte[nativeSz.Width * nativeSz.Height];
bData = new byte[nativeSz.Width * nativeSz.Height];
rBand.ReadRaster(0, 0, nativeSz.Width, nativeSz.Height, rData, nativeSz.Width, nativeSz.Height, 0, 0);
gBand.ReadRaster(0, 0, nativeSz.Width, nativeSz.Height, gData, nativeSz.Width, nativeSz.Height, 0, 0);
bBand.ReadRaster(0, 0, nativeSz.Width, nativeSz.Height, bData, nativeSz.Width, nativeSz.Height, 0, 0);
ftScaleTemp = new SizeF(1, 1);// (float)area.Area.Width / area.DataSize.Width, (float)area.Area.Height / area.DataSize.Height);
ftScaleTemp = new SizeF(ftScaleTemp.Width * area.Area.Width, ftScaleTemp.Height * area.Area.Height);
ftShiftTemp = new Size(area.Area.Location);
ftNativeSz = nativeSz;
if (area.Data is byte[])
TextureLoader.FillTexture(texture, FillTextureByte);
/*else if (area.Data is float[])
TextureLoader.FillTexture(texture, FillTextureFloat);*/
}
return texture;
}
/// <summary>
/// Initializes a new instance of the DigitalElevationMap class.
/// </summary>
/// <param name="mapSize">Size of the map</param>
/// <param name="rDb"></param>
/// <param name="devIf"></param>
/// <param name="reader"></param>
public DigitalElevationMap(Size mapSize, RasterDatabase.RasterDatabase rDb,
DeviceInterface devIf, GDALReader reader)
: base(new Vector3(-5f, -0.5f, -5f), new Vector3(5f, 1f, 5f))
{
this.mapSize = mapSize;
maxDimension = mapSize.Width > mapSize.Height ? mapSize.Width : mapSize.Height;
this.rDb = rDb;
this.devIf = devIf;
this.reader = reader;
axisHelper = new Axis3DHelper(new Vector3(2.5f, 0.5f, 2.5f));
rotAxisHelper = new RotationAxis3DHelper(new Vector3());
}
public static Bitmap SampleRGBDiffuseMap(GDALReader dataSrc, Size size)
{
// find bands to use
int r, g, b;
dataSrc.Info.GetRGABands(out r, out g, out b);
Size nativeSz = dataSrc.Info.Resolution;
Band rBand = dataSrc.GetRasterBand(r + 1);
Band gBand = dataSrc.GetRasterBand(g + 1);
Band bBand = dataSrc.GetRasterBand(b + 1);
// Note: This *should* work
byte[] rData = new byte[size.Width * size.Height];
byte[] gData = new byte[size.Width * size.Height];
byte[] bData = new byte[size.Width * size.Height];
rBand.ReadRaster(0, 0, nativeSz.Width, nativeSz.Height, rData, size.Width, size.Height, 0, 0);
gBand.ReadRaster(0, 0, nativeSz.Width, nativeSz.Height, gData, size.Width, size.Height, 0, 0);
bBand.ReadRaster(0, 0, nativeSz.Width, nativeSz.Height, bData, size.Width, size.Height, 0, 0);
// combine channel samples into image
Bitmap bitmap = new Bitmap(size.Width, size.Height, PixelFormat.Format24bppRgb);
BitmapData data = bitmap.LockBits(new Rectangle(new Point(), size), ImageLockMode.WriteOnly, PixelFormat.Format24bppRgb);
unsafe
{
// write data to each pixel
Bitmap24bitRGBPixel* pixels = (Bitmap24bitRGBPixel*)data.Scan0;
for (int i = 0; i < rData.Length; i++)
{
pixels->R = bData[i];
pixels->G = gData[i];
pixels->B = rData[i];
pixels++;
}
}
bitmap.UnlockBits(data);
return bitmap;
}
public void LoadVisualization(DataProfile dataProfile, DataProfile.SubProfile subProfile,
IDataSourceReader dataSrcReader, DataSourceInfo dataSrcInfo)
{
renderFrame = true;
renderingThread.Start();
controlStatus = ControlStatus.Loading;
rContext.LoadingLayer.SetProgress(0);
rContext.LoadingLayer.SetText("Loading... DEM Geometry");
rContext.LoadingLayer.Visible = true;
Render();
// load data from dlg into database
database = new RasterDatabase.RasterDatabase();
object filteredData = subProfile.Filter.FilterData(dataSrcReader);
if (filteredData is byte[])
{
DataLayer dataLayer = new DataLayer("DEM", 8, "byte");
dataLayer.AddArea(new ByteArea(new Rectangle(new Point(), dataSrcReader.Info.Resolution),
new RectangleF(0, 0, 1, 1),
(byte[])filteredData, dataSrcReader.Info.Resolution));
database.AddLayer(dataLayer);
}
else if (filteredData is float[])
{
DataLayer dataLayer = new DataLayer("DEM", 32, "float");
dataLayer.AddArea(new FloatArea(new Rectangle(new Point(), dataSrcReader.Info.Resolution),
new RectangleF(0, 0, 1, 1),
(float[])filteredData, dataSrcReader.Info.Resolution));
database.AddLayer(dataLayer);
}
// load data source(s)
DataSourceItem item = new DataSourceItem(dataSrcInfo.BppType,
(Bitmap)PreviewRasterizer.DrawRotatedBandPreview(dataSrcInfo.Bands,
64, dataSrcInfo));
heightDataSrcs.Add(item);
// load diffuse sources
// grey-scale for height
GreyScaleDEMSampler srcImgSampler = new GreyScaleDEMSampler();
Bitmap srcImg = srcImgSampler.GenerateBitmap(new Size(64, 64), database.Layers[0].Areas[0]);
item = new DataSourceItem("Height", srcImg);
item.DEMSampler = srcImgSampler;
//(Bitmap)PreviewRasterizer.DrawRotatedBandPreview(new DataSourceInfo.DataBandInfo[] { new DataSourceInfo.DataBandInfo("Source", srcImg) },
//64, null));
diffuseDataSrcs.Add(item);
// load colour image if possible as other source (i.e the original if an RGB img)
if (dataSrcReader.Info.SupportsRGB())
{
item = new DataSourceItem("SourceRGB",
SourceDataDiffuseSampler.SampleRGBDiffuseMap((GDALReader)dataSrcReader,
new Size(64, 64)));
diffuseDataSrcs.Add(item);
reader = (GDALReader)dataSrcReader;
}
// height band range
HeightBandRange hbr = new HeightBandRange();
hbr.AddBand(0, Color.DarkGreen);
hbr.AddBand(0.25f, Color.Blue);
hbr.AddBand(0.4f, Color.DarkGreen);
hbr.AddBand(0.5f, Color.Green);
hbr.AddBand(0.8f, Color.Gray);
hbr.AddBand(1, Color.White);
HeightBandDEMSampler hBandSampler = new HeightBandDEMSampler(hbr);
item = new DataSourceItem("HeightBands",
hBandSampler.GenerateBitmap(new Size(64, 64), database.Layers[0].Areas[0]));
item.DEMSampler = hBandSampler;
diffuseDataSrcs.Add(item);
// load database into visualization
dem = new DigitalElevationMap(database.Area.Size, database, rContext.DevIf, (GDALReader)dataSrcReader/*,
hBandSampler.GenerateBitmap(new Size(512, 512),
database.Layers[0].Areas[0])*/
);
rContext.SetDEM(dem);
// setup geometry layers
geometryLayers.Add(new GeometryVisLayer("Diffuse", item.Thumbnail, true));
geometryLayers.Add(new GeometryVisLayer("Overlay Grid", null, true));
rContext.DevIf.LocalSettings["GeometryVisLayer.Diffuse"] = geometryLayers[0];
rContext.DevIf.LocalSettings["GeometryVisLayer.Overlay"] = geometryLayers[1];
// now load default texture
SetDiffuseSource(0);
rContext.LoadingLayer.SetProgress(100);
Render();
Thread.Sleep(500);
rContext.LoadingLayer.Visible = false;
controlStatus = ControlStatus.Idle;
Render();
}
public void RebuildDiffuseTextures(GDALReader gdalReader)
{
//geom.RebuildDiffuseTextures(gdalReader);
}
public Texture GenerateTexture(Size size, DataArea area, Device gDevice, GDALReader dataSrc)
{
Texture texture = new Texture(gDevice, size.Width, size.Height, 0, Usage.None, Format.A8R8G8B8, Pool.Managed);
lock (this)
{
// find bands to use
int r, g, b;
dataSrc.Info.GetRGABands(out r, out g, out b);
Size nativeSz = dataSrc.Info.Resolution;
Band rBand = dataSrc.GetRasterBand(r + 1);
Band gBand = dataSrc.GetRasterBand(g + 1);
Band bBand = dataSrc.GetRasterBand(b + 1);
rData = new byte[nativeSz.Width * nativeSz.Height];
gData = new byte[nativeSz.Width * nativeSz.Height];
bData = new byte[nativeSz.Width * nativeSz.Height];
rBand.ReadRaster(0, 0, nativeSz.Width, nativeSz.Height, rData, nativeSz.Width, nativeSz.Height, 0, 0);
gBand.ReadRaster(0, 0, nativeSz.Width, nativeSz.Height, gData, nativeSz.Width, nativeSz.Height, 0, 0);
bBand.ReadRaster(0, 0, nativeSz.Width, nativeSz.Height, bData, nativeSz.Width, nativeSz.Height, 0, 0);
/*ftScaleTemp = new SizeF(1, 1);// (float)area.Area.Width / area.DataSize.Width, (float)area.Area.Height / area.DataSize.Height);
ftScaleTemp = new SizeF(ftScaleTemp.Width * area.Area.Width, ftScaleTemp.Height * area.Area.Height);
ftShiftTemp = new Size(area.Area.Location);
ftNativeSz = nativeSz;*/
ftScaleTemp = new SizeF((float)area.Area.Width / size.Width, (float)area.Area.Height / size.Height);
ftShiftTemp = new Size(area.Area.Location);
if (area.Data is byte[])
{
// to heights
//TextureLoader.FillTexture(texture, FillTextureByteToHeights);
// generate normal acc
ftTexSz = size;
//texStream = texture.LockRectangle(0, LockFlags.None);
/*Texture normalTex = new Texture(gDevice, size.Width, size.Height, 0, Usage.None, Format.A8R8G8B8, Pool.Managed);
TextureLoader.FillTexture(normalTex, FillTextureByteToNormalAcc);*/
heights = new float[size.Width * size.Height];
int index = 0;
//SizeF nativeScale = new SizeF((float)nativeSz.Width / size.Width, (float)nativeSz.Height / size.Height);
for (int y = 0; y < size.Height; y++)
{
int yNative = (int)(ftShiftTemp.Height + (y * ftScaleTemp.Width));
for (int x = 0; x < size.Width; x++)
{
int xNative = (int)(ftShiftTemp.Width + (x * ftScaleTemp.Width));
int indexNative = (yNative * nativeSz.Width) + xNative;
float rValue = rData[indexNative] / 255f;
float gValue = gData[indexNative] / 255f;
float bValue = bData[indexNative] / 255f;
heights[index++] = (rValue + gValue + bValue) / 3f;
}
}
/*texture.UnlockRectangle(0);
texture.Dispose();*/
// calculate normals
Vector3[] normals;
GenerateMap(heights, size, out normals);
// write to texture
texStream = texture.LockRectangle(0, LockFlags.None);
foreach (Vector3 normal in normals)
{
texStream.WriteByte((byte)(((normal.Z / 2) + 0.5f) * 255));
texStream.WriteByte((byte)(((-normal.Y / 2) + 0.5f) * 255));
texStream.WriteByte((byte)(((normal.X / 2) + 0.5f) * 255));
texStream.WriteByte(255);
}
/*foreach (float height in heights)
{
texStream.WriteByte(0);
texStream.WriteByte((byte)(height * 255));
texStream.WriteByte(0);
texStream.WriteByte(255);
}*/
texture.UnlockRectangle(0);
}
return texture;
}
}
