private void LoadImageToRenderer(vtk.vtkRenderer renderer)
{
try
{
string backgroundImageFileName = ApplicationOptions.Instance().ViewOptions.BackgroundFileName;
if (!string.IsNullOrEmpty(backgroundImageFileName))
{
string backgroundImagePath = System.IO.Path.Combine(CFolderUtility.DataFolder(), ApplicationOptions.Instance().ViewOptions.BackgroundFileName);
//string backgroundImagePath = @"C:\sky4.jpg";
vtk.vtkJPEGReader jpegReader = new vtk.vtkJPEGReader();
if (jpegReader.CanReadFile(backgroundImagePath) != 0)
{
jpegReader.SetFileName(backgroundImagePath);
jpegReader.Update();
vtk.vtkImageData imageData = jpegReader.GetOutput();
vtk.vtkImageActor actor = new vtk.vtkImageActor();
actor.SetInput(imageData);
renderer.AddActor(actor);
double[] origin = imageData.GetOrigin();
double[] spacing = imageData.GetSpacing();
int[] extent = imageData.GetExtent();
vtk.vtkCamera camera = renderer.GetActiveCamera();
camera.ParallelProjectionOn();
double xc = origin[0] + 0.5 * (extent[0] + extent[1]) * spacing[0];
double yc = origin[1] + 0.5 * (extent[2] + extent[3]) * spacing[1];
//double xd = (extent[1] - extent[0] + 1)*spacing[0];
double yd = (extent[3] - extent[2] + 1) * spacing[1];
double d = camera.GetDistance();
camera.SetParallelScale(0.5 * yd);
camera.SetFocalPoint(xc, yc, 0.0);
camera.SetPosition(xc, yc, d);
}
jpegReader.Dispose();
}
}
catch (Exception ex)
{
string errMsg = ex.Message + "\n" + ex.StackTrace;
vtk.vtkOutputWindow.GetInstance().DisplayErrorText(errMsg);
}
}
private void UpdateRendererOutline(ref vtk.vtkActor2D outlineRendererActor, ref vtk.vtkPolyData polyData, vtk.vtkRenderer renderer)
{
try
{
if (outlineRendererActor == null)
{
outlineRendererActor = new vtk.vtkActor2D();
polyData = new vtk.vtkPolyData();
polyData.Allocate(5, 0);
vtk.vtkIdList idList = new vtk.vtkIdList();
idList.SetNumberOfIds(5);
vtk.vtkPoints points = new vtk.vtkPoints();
idList.InsertId(0, points.InsertNextPoint(1, 1, 0));
idList.InsertId(1, points.InsertNextPoint(2, 1, 0));
idList.InsertId(2, points.InsertNextPoint(2, 2, 0));
idList.InsertId(3, points.InsertNextPoint(1, 2, 0));
idList.InsertId(4, idList.GetId(0));
polyData.SetPoints(points);
polyData.InsertNextCell(4, idList);
vtk.vtkCoordinate coordinate = new vtk.vtkCoordinate();
coordinate.SetCoordinateSystemToDisplay();
vtk.vtkPolyDataMapper2D mapper = new vtk.vtkPolyDataMapper2D();
mapper.SetInput(polyData);
mapper.SetTransformCoordinate(coordinate);
outlineRendererActor.SetMapper(mapper);
outlineRendererActor.SetPosition(0, 0);
outlineRendererActor.SetPosition2(1, 1);
renderer.AddActor(outlineRendererActor);
}
double[] vp = renderer.GetViewport();
renderer.NormalizedDisplayToDisplay(ref vp[0], ref vp[1]);
renderer.NormalizedDisplayToDisplay(ref vp[2], ref vp[3]);
polyData.GetPoints().SetPoint(0, vp[0], vp[1], 0);
polyData.GetPoints().SetPoint(1, vp[2], vp[1], 0);
polyData.GetPoints().SetPoint(2, vp[2], vp[3], 0);
polyData.GetPoints().SetPoint(3, vp[0], vp[3], 0);
// Change Outline color and width
double[] normalOutlineColor = ApplicationOptions.Instance().RendererLayoutOptions.NormalOutlineColor;
float normalOutlineWidth = ApplicationOptions.Instance().RendererLayoutOptions.NormalOutlineLineWidth;
if (renderer == IApp.theApp.RendererManager.ActiveRenderer)
{
normalOutlineColor = ApplicationOptions.Instance().RendererLayoutOptions.ActiveOutlineColor;
normalOutlineWidth = ApplicationOptions.Instance().RendererLayoutOptions.ActiveOutlineLineWidth;
}
outlineRendererActor.GetProperty().SetColor(normalOutlineColor);
outlineRendererActor.GetProperty().SetLineWidth(normalOutlineWidth);
}
catch (Exception ex)
{
string errMsg = ex.Message + "\n" + ex.StackTrace;
vtk.vtkOutputWindow.GetInstance().DisplayErrorText(errMsg);
}
}