private void ReadJPEG()
{
// 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\beach.jpg");
//Read the image
vtkJPEGReader reader = vtkJPEGReader.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);
}
private vtkImageActor GetMapImage()
{
string filePath = this.folderPath + "\\map.jpg";
vtkImageData imageData;
//Read the image
vtkJPEGReader jpegReader = new vtkJPEGReader();
if (jpegReader.CanReadFile(filePath) == 0)
{
Console.WriteLine("ERROR");
return(null);
}
jpegReader.SetFileName(filePath);
jpegReader.Update();
imageData = jpegReader.GetOutput();
//imageData.SetExtent(0, 1236, 0, 870, 0, 0);
//imageData.SetSpacing(1236, 870, 0.01);
imageData.SetOrigin(0, 0, 0);
vtkImageActor imageActor = new vtkImageActor();
imageActor.SetInput(imageData);
imageActor.SetScale(1f / horizontalRes);
double[] bounds = imageActor.GetBounds();
return(imageActor);
}
private void WriteJPEG()
{
// 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_jpeg.jpg");
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();
vtkJPEGWriter writer = vtkJPEGWriter.New();
writer.SetFileName(filePath);
writer.SetInputConnection(castFilter.GetOutputPort());
writer.Write();
// Read and display file for verification that it was written correctly
vtkJPEGReader reader = vtkJPEGReader.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();
}
/// <summary>
/// Load image files into vtkImageData.
/// </summary>
/// <param name="path">Path to images.</param>
/// <param name="extension">Image extension.</param>
/// <returns></returns>
public static vtkImageData VTKLoader(string path, string extension)
{
/*DEPRECATED!!*/
//Output
vtkImageData data = vtkImageData.New();
//Get files from path
DirectoryInfo d = new DirectoryInfo(@path);
FileInfo[] files = d.GetFiles();
vtkStringArray allfiles = vtkStringArray.New();
//Iterate over files and read image data
foreach (FileInfo file in files)
{
//Fullfile
string fullfile = Path.Combine(path, file.Name);
allfiles.InsertNextValue(fullfile);
}
if (extension == ".png")
{
vtkPNGReader reader = vtkPNGReader.New();
reader.SetFileNames(allfiles);
reader.Update();
data = reader.GetOutput();
reader.Dispose();
}
if (extension == ".jpg")
{
vtkJPEGReader reader = vtkJPEGReader.New();
reader.SetFileNames(allfiles);
reader.Update();
data = reader.GetOutput();
reader.Dispose();
}
if (extension == ".bmp")
{
vtkBMPReader reader = vtkBMPReader.New();
reader.SetFileNames(allfiles);
reader.Update();
data = reader.GetOutput();
reader.Dispose();
}
data.SetScalarTypeToUnsignedChar();
data.Update();
return(data);
}
public void ReadImageIntoObject(RenderWindowControl renderWindowControl, nvmImageModel camera)
{
vtkRenderWindow renderWindow = renderWindowControl.RenderWindow;
vtkRenderer renderer = renderWindow.GetRenderers().GetFirstRenderer();
string filePath = Path.Combine(tempDirectory, $"{camera.fileName}");
vtkJPEGReader reader = vtkJPEGReader.New();
reader.SetFileName(filePath);
reader.Update();
// Treba poriesit ako nasmerovat obrazky bez pokazenia textury
var vectoris = Vector3.Transform(new Vector3(0, 0, 1), camera.quaternion);
vtkPlaneSource planeSource = vtkPlaneSource.New();
vtkTexture texture = new vtkTexture();
texture.SetInputConnection(reader.GetOutputPort());
vtkTransform transform = new vtkTransform();
transform.RotateX(180);
texture.SetTransform(transform);
vtkTextureMapToPlane plane = new vtkTextureMapToPlane();
plane.SetInputConnection(planeSource.GetOutputPort());
planeSource.SetCenter(camera.cameraCenter.X, camera.cameraCenter.Y, camera.cameraCenter.Z);
vtkPolyDataMapper mapper = vtkPolyDataMapper.New();
mapper.SetInputConnection(plane.GetOutputPort());
vtkActor actor = vtkActor.New();
actor.SetMapper(mapper);
actor.SetTexture(texture);
renderer.SetBackground(0.2, 0.3, 0.4);
renderer.AddActor(actor);
}
int build3DViewFull()
{
Kitware.VTK.RenderWindowControl rw = new Kitware.VTK.RenderWindowControl();
vtkRenderWindow _renwin = rw.RenderWindow;
vtkRenderer _render = _renwin.GetRenderers().GetFirstRenderer();
_renwin.AddRenderer(_render);
vtkRenderWindowInteractor iren = new vtkRenderWindowInteractor();
iren.SetRenderWindow(_renwin);
// 新建文件读取对象，常见的有vtkBMPReader、vtkDICOMImageReader、vtkJPEGReader等
vtkJPEGReader jpegReader = new vtkJPEGReader();
// 不同的reader需要设置的参数是不同的 因此本例仅适合jpegreader
jpegReader.SetFilePrefix("C:/Users/DawnWind/Desktop/000/"); // 要打开的路径
jpegReader.SetFilePattern("%s%d.jpg"); // 图片文件名格式，此处为 0.jpg 1.jpg ...
jpegReader.SetDataByteOrderToLittleEndian();
jpegReader.SetDataSpacing(1, 1, 1.4); // 设置图片中像素比，我理解得不清楚，具体请百度之
jpegReader.SetFileNameSliceSpacing(1);
jpegReader.SetDataExtent(0, 209, 0, 209, 0, 29);
// 这里因为在000文件夹里面有0.jpg ~ 29.jpg，所以设置为 0，29
// 每张图片的长宽为210 * 210 因此设置为0，209
jpegReader.Update();
// update这里要注意一下，对于VTK在默认情况下是在最后操作时候才一次性刷新
// 也就是说如果没有自动刷新的话，在一些中间过程中是无法获得到数据的，因为没update进去
vtkContourFilter skinExtractor = new vtkContourFilter();
skinExtractor.SetInputConnection(jpegReader.GetOutputPort());
skinExtractor.SetValue(200, 100); //值越大，保留的部分越少。
//重新计算法向量
vtkPolyDataNormals skinNormals = new vtkPolyDataNormals();
skinNormals.SetInputConnection(skinExtractor.GetOutputPort());
skinNormals.SetFeatureAngle(60.0);
//Specify the angle that defines a sharp edge.
//If the difference in angle across neighboring polygons is greater than this value,
//the shared edge is considered "sharp".
//create triangle strips and/or poly-lines 为了更快的显示速度
vtkStripper skinStripper = new vtkStripper();
skinStripper.SetInputConnection(skinNormals.GetOutputPort());
vtkPolyDataMapper skinMapper = new vtkPainterPolyDataMapper();
skinMapper.SetInputConnection(skinStripper.GetOutputPort());
skinMapper.ScalarVisibilityOff(); //这样不会带颜色
vtkActor skin = new vtkActor();
skin.SetMapper(skinMapper);
// An outline provides context around the data.
// 一个围绕在物体的立体框，可以先忽略
/*
* vtkOutlineFilter> outlineData =
* vtkOutlineFilter>::New();
* outlineData.SetInputConnection(dicomReader.GetOutputPort());
*
* vtkPolyDataMapper> mapOutline =
* vtkPolyDataMapper>::New();
* mapOutline.SetInputConnection(outlineData.GetOutputPort());
*
* vtkActor> outline =
* vtkActor>::New();
* outline.SetMapper(mapOutline);
* outline.GetProperty().SetColor(0,0,0);
*
* aRenderer.AddActor(outline);
*/
// It is convenient to create an initial view of the data. The FocalPoint
// and Position form a vector direction. Later on (ResetCamera() method)
// this vector is used to position the camera to look at the data in
// this direction.
vtkCamera aCamera = new vtkCamera();
aCamera.SetViewUp(0, 0, -1);
aCamera.SetPosition(0, 1, 0);
aCamera.SetFocalPoint(0, 0, 0);
aCamera.ComputeViewPlaneNormal();
aCamera.Azimuth(30.0);
aCamera.Elevation(30.0);
// Actors are added to the renderer. An initial camera view is created.
// The Dolly() method moves the camera towards the FocalPoint,
// thereby enlarging the image.
_render.AddActor(skin);
_render.SetActiveCamera(aCamera);
_render.ResetCamera();
aCamera.Dolly(1.5);
// Set a background color for the renderer and set the size of the
// render window (expressed in pixels).
_render.SetBackground(.2, .3, .4);
_renwin.SetSize(640, 480);
// Note that when camera movement occurs (as it does in the Dolly()
// method), the clipping planes often need adjusting. Clipping planes
// consist of two planes: near and far along the view direction. The
// near plane clips out objects in front of the plane; the far plane
// clips out objects behind the plane. This way only what is drawn
// between the planes is actually rendered.
_render.ResetCameraClippingRange();
// Initialize the event loop and then start it.
iren.Initialize();
iren.Start();
return(0);
}
static void ReadSupport(string Spath)
{
vtkJPEGReader reader = vtkJPEGReader.New();
reader.SetFileName(Spath);
reader.Update();
// Visualize
_ImageViewer = vtkImageViewer2.New();
_ImageViewer.SetInputConnection(reader.GetOutputPort());
_SliceStatusMapper = vtkTextMapper.New();
_SliceStatusMapper.SetInputConnection(reader.GetOutputPort());
vtkActor2D sliceStatusActor = vtkActor2D.New();
sliceStatusActor.SetMapper(_SliceStatusMapper);
vtkRenderWindow renderWindow = vtkRenderWindow.New();
//Display in full screen
renderWindow.SetFullScreen(1);
vtkInteractorStyleImage interactorStyle = vtkInteractorStyleImage.New();
renderWindow.GetRenderers().InitTraversal();
vtkRenderer ren;
while ((ren = renderWindow.GetRenderers().GetNextItem()) != null)
{
renderWindow.AddRenderer(ren);
}
_ImageViewer.SetRenderWindow(renderWindow);
_ImageViewer.GetRenderer().AddActor2D(sliceStatusActor);
_ImageViewer.SetSlice(_SupportSlice);
iren = vtkRenderWindowInteractor.New();
iren.SetRenderWindow(renderWindow);
renderWindow.Render();
_ColorLevel = 60;
_ImageViewer.SetColorLevel(_BlackLevel);
_ImageViewer.Render();
Down(_period, 170);
Backward(_period, 1);
for (int i = 0; i < _SupportLayers; i++)
{
System.Threading.Thread.Sleep(_layertime); // delay
Backward(_period, 1);
}
_ImageViewer.SetColorLevel(_BlackLevel);
_ImageViewer.Render();
Forward(_period, _MovedLayers);
Console.WriteLine(_MovedLayers);
if (reader != null)
{
reader.Dispose();
}
if (_ImageViewer != null)
{
_ImageViewer.Dispose();
}
if (_SliceStatusMapper != null)
{
_SliceStatusMapper.Dispose();
}
if (sliceStatusActor != null)
{
sliceStatusActor.Dispose();
}
if (renderWindow != null)
{
renderWindow.Dispose();
}
if (interactorStyle != null)
{
interactorStyle.Dispose();
}
if (ren != null)
{
ren.Dispose();
}
if (iren != null)
{
iren.Dispose();
}
}