We have added a new feature to the 3D Model Editor. It can remove non-monifold edges and non-monifold points. The non-monifold edges and non-monifold points are introduced at https://www.weiy.city/2022/09/3d-model-editor-find-non-manifold-edge-and-points/. Let’s create a cube with non-monifold edges and non-monifold points by the following code. The model file had been uploaded to Read more…
We have added a new feature to the 3D Model Editor. It can reconstruct the cells with bad cell normals, and the updated cell normals now face outwards. This aligns with the principles of light reflection. Tool: https://www.weiy.city/functions/3D-Model-Editor/ Demo video: The red area indicates the cells with bad cell normals. Read more…
Uniform Cubic Spline To Smooth Segments Change input points and use the Cubic piecewise function introduced in Basic functions for B-Spline to create smooth curve. The left renderer shows polygon lines through original points, and the right one is the smooth curve generated by algorithm. Cardinal Spline To Smooth Segments Read more…
Uniform Cubic Spline Piecewise function: The cubic spline graph: Test code: #include <vtkActor.h> #include <vtkCleanPolyData.h> #include <vtkDistancePolyDataFilter.h> #include <vtkNamedColors.h> #include <vtkNew.h> #include <vtkPointData.h> #include <vtkPolyDataMapper.h> #include <vtkPolyDataReader.h> #include <vtkProperty.h> #include <vtkRenderWindow.h> #include <vtkRenderWindowInteractor.h> #include <vtkRenderer.h> #include <vtkScalarBarActor.h> #include <vtkSmartPointer.h> #include <vtkSphereSource.h> #include <vtkSTLReader.h> #include <vtkTransform.h> #include <vtkMatrix4x4.h> #include <vector> #include Read more…
Bézier Curves Bézier curves are a type of parametric curve that is widely used in computer graphics, computer-aided design, and various other fields for creating smooth, elegant curves. They are named after the French engineer Pierre Bézier, who developed the mathematics behind these curves while working at Renault in the Read more…
ViewTransform stores three vectors in the first three rows and position information in the forth column. We can rotate camera around view up direction [ Azimuth operation ] and horizontal line (sideway) [ Elevation operation ] easily. The relative implementation details in VTK:
Books introduction page: Book content update: Add A Short Adventure About Pengjiamu In Xinjiang, Thailand Sleeping Beauty Cave Miracle Rescue Incident, and The Mystery of Shanghai’s Nine Dragon Pillars for Short Stories Book. Add a new e-book Traditional Chinese Medicine Health Tips. Here is a demo video shows how to Read more…
The interface vtkTransform::GetOrientation returns Euler angles to describes the orientation of a rigid body.The order of rotation axes in this process is Z, X, Y, but the solving sequence in the interface code is reversed.The implementation details about the interface are here. (from VTK8.2.0) We can write a test program to use Euler angles Read more…
We modified the web app images viewer to show the chosen image in real time. An new label at the left-top corner will shows the name of chosen image. Demo video (please pay attentation to the left-top corner) Related post: