private void ReadDataSource(string file)
{
// look for file-type
foreach (FileType type in fileTypes)
{
if (type.IsFileType(file))
{
fType = type;
break;
}
}
if (fType == null)
throw new Exception(String.Format("Unable to match file type for {0}", fType));
// load data-source
reader = new GDALReader();
reader.OpenFile(file, fType);
// build source layers for UI
dsInfo = reader.Info;
DataSourceControl.DataSourcePreviewInfo info = new DataSourceControl.DataSourcePreviewInfo();
info.Dimensions = dsInfo.Resolution;
info.Type = fType.Name;
info.DataType = dsInfo.BppType;
info.Groups = new DataSourceControl.DataSourceImageGroup[2];
DataSourceControl.DataSourcePreviewImage[] images = new DataSourceControl.DataSourcePreviewImage[dsInfo.Bands.Length];
for (int i = 0; i < dsInfo.Bands.Length; i++)
{
images[i] = new DataSourceControl.DataSourcePreviewImage(dsInfo.Bands[i].Image,
dsInfo.Bands[i].Name,
new Size(64, 64));
}
DataSourceControl.DataSourcePreviewImage[] buildInImages = new DataSourceControl.DataSourcePreviewImage[2];
buildInImages[0] = new DataSourceControl.DataSourcePreviewImage(null, "NormalMap", new Size(64, 64));
buildInImages[1] = new DataSourceControl.DataSourcePreviewImage(/*Image.FromFile(file)*/null, "TextureMap", new Size(64, 64));
info.Groups[1] = new DataSourceControl.DataSourceImageGroup(images);
info.Groups[0] = new DataSourceControl.DataSourceImageGroup(buildInImages);
dataSourceControl1.DataSource = info;
// load profiles for data-type
List<DataProfile> profiles = new List<DataProfile>();
foreach (DataProfile profile in dataProfiles)
{
if (profile.MatchProfile(fType))
profiles.Add(profile);
}
compatibleProfiles = profiles.ToArray();
dataProfileControl1.Profiles = compatibleProfiles;
}
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 static Image DrawRotatedBandPreview(DataSourceInfo.DataBandInfo[] bands, int imgSize, DataSourceInfo info)
{
Image img = new Bitmap(info != null ? imgSize * 2 : imgSize, imgSize);
DrawRotateBandPreviewToImg(bands, img, info);
return img;
}
public static void DrawRotateBandPreviewToImg(DataSourceInfo.DataBandInfo[] bands, Image image, DataSourceInfo info)
{
int sz = info != null ? image.Width / 2 : image.Width;
int rectSz = (int)Math.Sqrt(((float)sz * sz * 0.8f) / 2f);
Graphics g = Graphics.FromImage(image);
g.CompositingQuality = CompositingQuality.HighQuality;
g.SmoothingMode = SmoothingMode.AntiAlias;
g.TranslateTransform(sz / 2, sz / 2);
Rectangle rect = new Rectangle(-rectSz / 2,
-rectSz / 2,
rectSz,
rectSz);
float angle = 0;
int fontSz = 16;
Font font = new Font("Tahoma", 16);
for (int i = bands.Length - 1; i >= 0; i--)
{
angle += -22.5f;
if (i != 0)
g.RotateTransform(angle);
if (bands[i].Image != null)
g.DrawImage(bands[i].Image, rect);
else
{
g.FillRectangle(Brushes.White, rect);
g.DrawRectangle(Pens.Black, rect);
}
if (i == 0 && bands[i].Name != null && bands[i].Name.Length > 0)
{
SizeF strSz;
while (true)
{
strSz = g.MeasureString(bands[i].Name, font);
if (strSz.Width > (rectSz * 0.8))
font = new Font("Tahoma", --fontSz);
else
break;
}
g.DrawString(bands[i].Name, font, Brushes.Black, -strSz.Width / 2, -strSz.Height / 2);
}
if (i != 0)
g.RotateTransform(-angle);
}
if (info != null)
{
g.CompositingQuality = CompositingQuality.HighQuality;
g.SmoothingMode = SmoothingMode.AntiAlias;
font = new Font("Tahoma", 10);
g.TranslateTransform(sz / 2, 0);
g.DrawString(string.Format("{0} x {1}", info.Resolution.Width, info.Resolution.Height),
font, Brushes.Black, 10, -sz / 4);
g.DrawString(info.Bpp + "-bit", font, Brushes.Black, 10, sz / 4);
}
g.Flush();
g.Dispose();
}