Here is a simple example which use vtkMarchingCubes to take iossurface from volume. We use vtkVoxelModeller to create an image data which has scalar data to mark where is inside and outside. Output:
Environment: VTK8.2.0 + Qt 5.12.2. I have tried vtkImageActor, vtkActor2D and vtkButtonWidget to make 2D button in different scenes. After comparing them, I think vtkActor2D is the most convenient and the safest solution. Here is an example using vtkButtonWidget, Use vtkButtonWidget To Create 2D Button. vtkImageActor is a 3D actor, we need Read more…
As we know, vtkTransformFilter can change points’ positions and rewrite data. Then we use vtkTransform object to do linear transform for 3D model. This process is not equal to the multiplication of these two matrices. We can deduce the event in our online tool: 3D Model Editor.Open module linear transform tester. We Read more…
Here is a simple demo project which draws an ITK RGBA image and show it in vtkRenderer. We will read DICOM data and put the ITK image above vtkImageData. CMakeLists.txt ULabelImage.h ULabelImage.cpp main.cpp
This article is a sequel to the previous one https://www.weiy.city/2023/04/draw-a-circle-around-mouse-postion-on-screen/. Let’s check if the vertex of cone is inside the red circle when we move mouse. CustomIteractorStyle.cpp UPaintBrush.cpp UPaintBrush.h Output:
The example draws a red circle around mouse position by vtkContextItem, vtkContext2D and vtkContextActor. When moving mouse, the red circle following it. CMakeLists.txt CustomIteractorStyle.h: CustomIteractorStyle.cpp UPaintBrush.h UPaintBrush.cpp main.cpp
This post is based on an old project Use ITK And VTK To Show DICOM Image. We want to add an above layer which drawed translucent red color on the gray image. Use alpha blend algorithm to merge two different color: origin color = $(R_1, G_1, B_1, 255)$ canvas color Read more…
Environment: VTK8.2.0, ITK5.0.0 Here is a demo project to display DICOM data by ITK and VTK. CMakeLists.txt main.cpp The folder contains a series of dcm files.Run it. Convert it to RGBA Image crudely.
Make canvas response to key press event We often create our custom iteractor style object to define our interactive behaviors.Write some debug code in OnKeyPress event.For web page, the element canvas is like Qt’s widget. Set property tabindex for responsing to user key press event. Asynchronous call It’s synchronous for JS code call wasm Read more…