Create a file GetPrimers.c which has a simple math function. #include <stdio.h> // export the function. #ifdef __EMSCRIPTEN__ #include <emscripten.h> EMSCRIPTEN_KEEPALIVE #endif int compute( int a, int b ) { int ans = 1; for( int i = 0; i < b; ++i ) { ans = ans * a; Read more…
I found a new way to make interpolation spline curve smoother. Let’s explore it based on the previous post, VTK – Make Interpolation Spline Curve Smoother. Take every point and its neighbor points on the curve, generate two vectors and . Make the second point B to be the midpoint Read more…
I have two old posts about draw display bounding box, VTK: Show Display Bounds After Project Points and VTK: Show Display Bounds. But they didn’t give me a statisfy result.In this post, I find feature edges of the mesh firstly, convert the world points to display points by vtkViewport object. Read more…
git reset <pathspec> is the opposite of git add <pathspec>. git reset [<commit>] resets the index but not the working tree (i.e., the changed files are preserved but not marked for commit) and reports what has not been updated. The command git reset <pathspec> will change the index information but Read more…
Here are a few points like the following picture. The source code: #include <iostream> #include <vector> #include <iostream> #include <vtkPolyData.h> #include <vtkProperty.h> #include <vtkPolyDataMapper.h> #include <vtkActor.h> #include <vtkPlane.h> #include <vtkRenderer.h> #include <vtkRenderWindow.h> #include <vtkRenderWindowInteractor.h> #include <vtkPoints.h> #include <vtkInteractorStyleTrackballCamera.h> #include “./point.hpp” #include <vtkPlane.h> #include <vtkPlaneSource.h> #include <vtkTransform.h> #define vtkSPtr vtkSmartPointer #define Read more…
Here is a 3D object lock from Create Lock By Blender. We can use vtkPolyDataSilhouette to extract a subset of a polygonal mesh edges to generate an outline (silhouette). #include <iostream> #include <vector> #include <iostream> #include <vtkPolyData.h> #include <vtkProperty.h> #include <vtkPolyDataMapper.h> #include <vtkActor.h> #include <vtkPlane.h> #include <vtkRenderer.h> #include <vtkRenderWindow.h> #include Read more…
The post shows a way to scale image which is displayed by vtkActor2D object. We used vtkImageResize that performs sinc interpolation on images to change their sizes. #include <vtkCamera.h> #include <vtkImageActor.h> #include <vtkImageCanvasSource2D.h> #include <vtkImageData.h> #include <vtkImageMapper3D.h> #include <vtkImageReader2.h> #include <vtkImageReader2Factory.h> #include <vtkImageResize.h> #include <vtkImageSincInterpolator.h> #include <vtkInteractorStyleImage.h> #include <vtkNamedColors.h> #include Read more…
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…