Welcome back to another exciting part of the n-body-problem post series. This time we are going to implement the Euler-Method to make the tests, we defined in the last post, pass. Read Full Article
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Welcome back to the n-body-problem series. Last time we’ve been setting up our project structure and CMake setup. According to some helpful reddit comments, I adapted our CMake setup a bit, but I’m still not absolutely sure if the project structure, as it is now, will last to the end of the project. If you’ve missed any of the earlier posts, you can find them here:
- My God, it’s Full Of Stars: The n-body-problem series
- My God, it’s Full Of Stars: And then there was CMake
Sometimes I need to execute an operation, like std::sort or std::transform, on a container of structs or objects using a lambda or function pointers which should take type defined criteria. Another scenario might be a global minima search of an arbitrary brane which could be described by a vector of 3-dimensional vectors. In such cases, we often use pointer to members. Read Full Article
Sometimes it seems to me that tools are getting too important. Don’t get me wrong, I really appreciate those little helpers modern IDE’s and their plugins are offering. For example if they’re suggesting to me a method might be rather static instead of const. Or not all paths of a lengthy, chained and nested If statement are returning something. Especially with legacy code those tools are very helpful.
Welcome back at the 2nd part of the n-body-problem series. With the first post we had a short view on the equations of motion we need to calculate the position in space of a point mass. This time we need to conclude our equations and create a minimum project setup. I would like to use CMake for project setup for two reasons.
I thought it would be a very nice idea to start my blog with a small project I wanted to do since a long time. A small tool/solver of the n-body-problem. It’s not just only the interest of solving a challenging mathematical problem with modern C++. I also love clean, concise and readable code, which is also something I would like to train and share with this project. You can find the empty repository setup at GitHub. I will always try to tag the end state of the repository after each post of this blog series.