I found a bug when we do matrix inverse calculation by vtkTransform object. The version 8.2.0 and 9.1.0 of VTK has the same potential risk in vtkMatrix4x4::Invert(const double inElements[16], double outElements[16]).Let’s see the source code, it judges whether the determinant Read more…
We had used vtkImplicitPolyDataDistance to calculate the distance from a point to the target points set in the post Calculate Distance From A Point To PolyData In VTK. We will try a new way using KD-Tree to find the closest Read more…
std::thread #include <iostream> #include <thread> #include <chrono> void f1(int n) { for (int i = 0; i < 5; ++i) { std::cout << “function f1 executing\n”; ++n; std::this_thread::sleep_for(std::chrono::milliseconds(10)); } } void f2(int& n) { for (int i = 0; i Read more…
Constexpr : Know Value At Compile Time int main(int argc, char** argv ) { int size0; constexpr auto size1 = 10; //constexpr auto size2 = size0; //error: constexpr variable ‘size2’ must be initialized by a constant expression return 0; } Read more…
Get field value by std::get from container We can use std::get to fetch field value from container object. It can help us to avoid use iteractor to access first or second element. #include <iostream> #include <tuple> #include <string> #include <map> Read more…
Git will show conflicts if there are many spaces in the same file. It can spend too much time to fix these conflicts if the spaces are too many. Use git help merge to refer to the manual page. ignore-space-change, Read more…
Here are two videos for showing using the web app on this website to show imported points and do linear transform for the mesh object. Web App : https://www.weiy.city/functions/3D-Model-Editor/ youtube youtube bilibili bilibili
Here are two videos for showing using the web app on this website to smooth local parts and delete cells of the mesh objects. Web App : https://www.weiy.city/functions/3D-Model-Editor/ youtube – local area edit youtube – local area edit bilibili – Read more…
I want to write a bash script to listen for CPU resource usage. If there is a long time for high CPU consumption, the script will kill the relevant process. I refer to the qustion https://unix.stackexchange.com/questions/66786/bash-script-that-automatically-kills-processes-when-cpu-memory-usage-gets-too-hi on the stackexchange.