The post is similar to Find Closest Plane Between Points In 3D By Levmar Algorithm. The vtkPlane in vtk9.0.2 or the newer version provides a way to calculate the fitting plane for a few points. static bool ComputeBestFittingPlane(vtkPoints* pts, double* origin, double* normal);. The origin will be the centroid of Read more…
Prepare bacon, wash and blanch it, this process should not take too long. Slice it up and get the garlic scapes ready. Add the vegetable oil, fry the bacon first, put in the garlic and stir-fry together. Cut the tomatoes into chunks and prepare egg. Fry the tomato chunks first Read more…
The post shows how to create rotate and move operators by blender. Tutorial video has been uploaded to youtube and bilibili. youtube bilibili The STL file in the video can be downloaded by the link: https://www.jianguoyun.com/p/DYDF0IIQjNHfCRiqu54E https://www.jianguoyun.com/p/DUNDiDMQjNHfCRitu54E
The post shows how to use blender to create a lock model simply. youtube bilibili The STL file in the video can be downloaded by the link:
The post introduce a way to make your wordpress website has the ability to check network connection. Install the plugin Insert Headers and Footers for wordpress. Add the following code in header part. <script> if (“serviceWorker” in navigator) { navigator.serviceWorker.register(“/serviceworker.js”) .then(function(registration) { console.log(“Service Worker registered with scope:”, registration.scope); }).catch(function(err) { Read more…
Affine transformation can be decomposed to translation, rotation, and scale. As we know, the transformation can be represented by matrix. Related post: https://www.weiy.city/2021/11/the-releationship-between-local-transform-and-pose-transform/ It can be computed by translate matrix and rotate & scale matrix. Example: I try to do decomposition for a matrix. Read more…
We know the matrix shearing object along a particular axis looks like: The shear transform can help us to approve that when a normal vector is transformed using the same matrix that transforms the points on an object, the resulting vector may not be perpendicular to the surface Read more…
As with 2D transforms, any 3D transformation matrix can be decomposed using SVD into a rotation, scale, and another rotation. Any symmetric 3D matrix has an eigenvalue decomposition into rotation, scale, and inverse-rotation. Finally, a 3D rotation can be decomposed into a product of 3D shear matrices. Rotate about z-axis: Read more…
Here are three vectors (1, 0, 1), (-1, 0, 1) and (0, -1, 0) in the 3D world space. Define a position pos(1, 1, 0). These vector and position forms a new coordinate system A. The inverse result is status B. The original world coordinate system can be changed to Read more…