Let’s make compiler to check return value in cpp functions. If there is wrong data type for interface’s return value, compiling process will fail and gives us error information. We can also check uninitialized variables in C++ file by the setting:
Here are two ways to get the same effect: The string.stl used in the project can be downloaded at: https://pan.quark.cn/s/5537f0b7de11
Here is a simple example about how to pass information by json from js to wasm (C++ generated). We will pass enum value with json in the following project. C++ JS: If you want to write a whole CPlusPlus + js web app, you can refer to our old project: Read more…
The post introduces two topics. My explore was based on the old project from What will happen if we pass wrong vtkRenderer object for vtkPicker::Pick?. Just see the important logics about our issue at the following diff file. vector.diff: Rememder use register_vector to export vector<int> and use it in js when Read more…
. I used the old project which was introduced on the post What will happen if we pass wrong vtkRenderer object for vtkPicker::Pick? to explore variable Tolerance effect. Let’s make Tolerance to be 0.1 in the picking experiment. We can see the picking range become bigger, but the range can’t scale as we zoom in/out. Tolerance Read more…
. vtkCellPicker has the interface int vtkPicker::Pick(double selectionX, double selectionY, double selectionZ, vtkRenderer* renderer).In the some scenes, we can still pick the 3D actor even if pass wrong vtkRenderer object to the interface.Here is a simple example we can use to test it. We can pick the cone at some bad Read more…
Simple way to setup webdav by docker Prepare: write docker-compose.yml setup Container We can access it by http://weiy.cc:9789/webdav/ Use https for webdav Go to /root/webdav.create folder ssl under /root/webdav.cp exist certificate files fullchain.pem and privkey.pem to /root/webdav/ssl write docker-compose.yml: write nginx.conf Make it works: docker-compose -f docker-compose.yml up & We Read more…
The operation cannot be completed because the file or folder is being used by another program. Close the file or folder and try again. You’ve probably encountered this issue on Windows when attempting to delete or rename a folder or file — the system warns that the file is in Read more…
. Sometimes we need to transfer important files between devices, and using WeChat for file transfers is inconvenient. Instead, you can use Minio to build a private cloud, ensuring privacy and security. First, you need a cloud server. (You see, some people claim cloud servers are useless, but this is Read more…