The article shows a few kinds of widgets which are used to measure the distance between two points, angle between two rays, and the bidimensional length of an object. Distance Measure The Distance On 2D Model We need vtkDistanceWidget, vtkDistanceRepresentation2D and vtkPointHandleRepresentation2D to help us to calculate the distance between Read more…
Emperor Ku is the grandson of Huangdi, he was smart and could speak when he was a child, the man had excellent character and was good at handling life affairs. Ku was chosen as an assistant by the Emperor Huangdi when he was only 15 years old, he became the Read more…
We want to put points on the three-dimensional model sometimes, it’s better if these control points can be moved around the item and project generates a new interpolation line dynamically. VTK provides a tool for us to do it easily. The following content shows two scenarios about point placer, both Read more…
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…