private void WritePNG()
{
// Path to vtk data must be set as an environment variable
// VTK_DATA_ROOT = "C:\VTK\vtkdata-5.8.0"
vtkTesting test = vtkTesting.New();
string root = test.GetDataRoot();
string filePath = System.IO.Path.Combine(root, @"Data\test_png.png");
int[] extent = new int[] { 0, 99, 0, 99, 0, 0 };
vtkImageCanvasSource2D imageSource = vtkImageCanvasSource2D.New();
imageSource.SetExtent(extent[0], extent[1], extent[2], extent[3], extent[4], extent[5]);
imageSource.SetScalarTypeToUnsignedChar();
imageSource.SetNumberOfScalarComponents(3);
imageSource.SetDrawColor(127, 45, 255);
imageSource.FillBox(0, 99, 0, 99);
imageSource.SetDrawColor(255, 255, 255);
imageSource.FillBox(40, 70, 20, 50);
imageSource.Update();
vtkImageCast castFilter = vtkImageCast.New();
castFilter.SetOutputScalarTypeToUnsignedChar();
castFilter.SetInputConnection(imageSource.GetOutputPort());
castFilter.Update();
vtkPNGWriter writer = vtkPNGWriter.New();
writer.SetFileName(filePath);
writer.SetInputConnection(castFilter.GetOutputPort());
writer.Write();
// Read and display file for verification that it was written correctly
vtkPNGReader reader = vtkPNGReader.New();
if (reader.CanReadFile(filePath) == 0)
{
MessageBox.Show("Cannot read file \"" + filePath + "\"", "Error", MessageBoxButtons.OK);
return;
}
reader.SetFileName(filePath);
reader.Update();
// Visualize
vtkImageViewer2 imageViewer = vtkImageViewer2.New();
imageViewer.SetInputConnection(reader.GetOutputPort());
// get a reference to the renderwindow of our renderWindowControl1
vtkRenderWindow renderWindow = renderWindowControl1.RenderWindow;
// renderer
vtkRenderer renderer = renderWindow.GetRenderers().GetFirstRenderer();
// set background color
renderer.SetBackground(0.2, 0.3, 0.4);
imageViewer.SetRenderer(renderer);
renderer.ResetCamera();
}
//TODO
public void DrawingModeRepaint()
{
if (_lastData == null)
{
return;
}
vtkImageReslice reslice = vtkImageReslice.New();
vtkTransform transform = vtkTransform.New();
transform.PostMultiply();
//TODO wyznaczenie centrum okna
double[] center = { 75, 100, 0 };
transform.Translate(-center[0], -center[1], -center[2]);
transform.RotateZ(_orientation);
transform.Translate(+center[0], +center[1], +center[2]);
transform.Update();
reslice.SetInput(_lastData);
reslice.SetResliceTransform(transform);
reslice.Update();
vtkImageData viewerInputData;
if (!DrawingEnabled)
{
viewerInputData = reslice.GetOutput();
}
else
{
var resliceOutput = reslice.GetOutput();
var sizeArray = resliceOutput.GetDimensions();
vtkImageCanvasSource2D imageCanvas = vtkImageCanvasSource2D.New();
imageCanvas.SetScalarTypeToUnsignedChar();
imageCanvas.SetExtent(0, sizeArray[0], 0, sizeArray[1], 0, 0);
imageCanvas.DrawImage(0, 0, resliceOutput);
DrawingUtils.Draw(imageCanvas, DrawingInfo);
imageCanvas.Update();
viewerInputData = imageCanvas.GetOutput();
}
_viewer.SetInput(viewerInputData);
UpdateViewer();
}