protected Bitmap GetThumbnailImage(int width) // Implemented abstract function in the base class
{
bool everythingisOk = true;
MemoryStream memStream = new MemoryStream();
Thread thread = new Thread(() =>
{
//string tracefile = @"C:\temp\stlviewer.stl_log";
string tracefile = TargetFile.Replace(".stl", ".stl_log");
Logg("_______________________________________________________________________________");
FileInfo fileInfo = new FileInfo(TargetFile);
Logg($"Name: {fileInfo.Name}");
Logg($"Dir.: {fileInfo.Directory}");
Logg($"Size: {fileInfo.Length}");
Logg("1. Tread started");
object convertFromString = null;
Color color = new Color();
ModelVisual3D root = new ModelVisual3D();
Model3DGroup model = new Model3DGroup();
PerspectiveCamera camera = new PerspectiveCamera();
BitmapExporter exporter = new BitmapExporter();
if (everythingisOk)
{
try
{
string colorString = (string)Registry.GetValue(@"HKEY_CURRENT_USER\Software\Marlin3DprinterTool", "Color", "Blue");
convertFromString = ColorConverter.ConvertFromString(colorString);
Logg($"2. Color: {convertFromString}");
if (convertFromString != null)
{
color = (Color)convertFromString;
}
}
catch (Exception e)
{
Logg($"Something goes wrong in Color {e.Message}");
everythingisOk = false;
}
}
if (everythingisOk)
{
if (convertFromString != null)
{
Viewport3D viewport = new Viewport3D();
if (everythingisOk)
{
try
{
Logg($"3. STLreader");
StLReader stlReader = new StLReader();
stlReader.DefaultMaterial = new DiffuseMaterial(new SolidColorBrush(color));
Logg($"4. Read the Targetfile {TargetFile}");
model = stlReader.Read(TargetFile);
Logg($"5. Model read. New Viewport");
}
catch (Exception e)
{
Logg($"Something goes wrong in STLreader {e.Message}");
everythingisOk = false;
}
}
if (everythingisOk)
{
try
{
Logg($"6. Arrange with / height {width}/{width}");
viewport.Measure(new Size(width, width));
viewport.Arrange(new Rect(0, 0, width, width));
Logg($"7. Create root");
viewport.Children.Add(root);
Logg($"8. Create camera");
camera.Position = new Point3D(2, 16, 20);
camera.LookDirection = new Vector3D(-2, -16, -20);
camera.UpDirection = new Vector3D(0, 0, 1);
camera.FieldOfView = 45;
camera.NearPlaneDistance = 0.1;
camera.FarPlaneDistance = double.PositiveInfinity;
viewport.Camera = camera;
}
catch (Exception e)
{
Logg($"Something goes wrong in STLarrange {e.Message}");
everythingisOk = false;
}
}
if (everythingisOk)
{
try
{
Logg($"8.1. Create light");
root.Children.Add(new DefaultLights());
Logg($"8.2 Load model");
root.Content = model;
camera.ZoomExtents(viewport);
Logg($"9. Create Background");
Brush background = new SolidColorBrush(Colors.Transparent);
Logg($"10. Create Exporter");
exporter.Background = background;
exporter.OversamplingMultiplier = 1;
}
catch (Exception e)
{
Logg($"Something goes wrong in Background/Light {e.Message}");
everythingisOk = false;
}
}
if (everythingisOk)
{
try
{
Logg($"11. Export to memorystream");
exporter.Export(viewport, memStream);
//Logg($"11. Export to {tempBitmap}");
//FileStream fs = new FileStream(tempBitmap, FileMode.Create, FileAccess.ReadWrite);
//exporter.Export(viewport, fs);
//fs.Flush();
//fs.Close();
}
catch (Exception e)
{
Logg($"Something goes wrong in Export to memory Stream {e.Message}");
everythingisOk = false;
}
}
}
}
});
thread.SetApartmentState(ApartmentState.STA);
thread.Start();
thread.Join();
if (everythingisOk)
{
try
{
Logg($"12. Create Bitmap from memorystream");
Bitmap thumbnailBitmap = (Bitmap)Image.FromStream(memStream);
return(thumbnailBitmap);
}
catch (Exception e)
{
Logg($"Something goes wrong in Bitmap from messageStream {e.Message}");
Logg("_______________________________________________________________________________");
return(null);
}
}
Logg("_______________________________________________________________________________");
return(null);
}
