The article shows how to create a simple vtk render window project. We need cmake and the visualization toolkit installed. This example uses C plus plus programming language to create and show a cone in the 3D world. CMakeLists.txt cmake_minimum_required(VERSION 2.8) project(mytest) find_package( VTK REQUIRED ) include( ${VTK_USE_FILE} ) add_executable(${PROJECT_NAME} Read more…
Independent Thread We want to run a single task in an independent thread in a convenient way in some scenarios. It is common in data process and UI interaction event, for example, we want to use QMovie object to play a gif to indicate our software is analyzing test data, Read more…
Git Rebase git rebase [ []] git wiil go to another branch by command git checkout firstly and then apply the commits on it to area. We wiil start with the example showed in the last article Git Diff Different Branches git checkout master git rebase master dev After resolving Read more…
We want to compare the current branch and another branch to find the changes since they diverged. For example, we create a new branch dev from branch master and add a few commits, the branch master also update after diverging. The common ancestor is in the following part. The following Read more…
Zhuanxu is the Emperor Huangdi’s grandson, he was smart and introverted in his childhood, the man helped Shaohao to manage Jiuli region when he was fifteen years old. Zhuanxu got superior political achievements at that moment, he was rewarded by the emperor at region GaoYang, so people called him Read more…
The filter vtkWarpScalar can help us to move the point along point normal by the scalar amount times the scale factor. We can change the size of the original model with it as long as there are normals in data. The following example has two renderers, the left renderer shows Read more…
We can use VTK observer-command mechanism to listen to slider value changing event and override our responding method void Execute(vtkObject *caller, unsigned long, void*) to change target item’s size. It’s easy to implement with the subclass of vtkCommand and vtkSliderWidget. The following example shows how to do it. I add Read more…
AddInputConnection is a public interface provided by vtkAlgorithm. We can use it to combine multiple input sources to get a final 3D model with some special algorithm class. The following example has two VTK algorithm classes which show us the multiple source connections. int main() { vtkSmartPointer<vtkSphereSource> sphereSource = vtkSmartPointer<vtkSphereSource>::New(); Read more…
vtkInteractorEventRecorder can be used to record VTK events in a single file and replay it by pass these events to vtkRenderWindowInteractor. Record The following code shows how to use it to save all interactive information into a file. We rotate the cone and switch its surface status between wireframe and Read more…