DebugDraw3D can also be used in languages other than GDScript.

For quite some time now, DebugDraw3D has been available for use from C#. However, prior to version 1.7.0, this was a very slow solution implemented using GodotObject.Call.

Starting with version 1.7.0, a native API was implemented for interaction with other languages. This interface is a C API that is initialized via Object.Call and obtains function addresses from Dictionary. Descriptions of all functions are stored in addons/debug_draw_3d/native_api/api.json after building the project via scons. So it should be possible to generate an API for any language that supports the C API and is integrated into Godot.

Currently, support for C# and C++ has been implemented. Both bindings are stored in the corresponding subfolders in the addons/debug_draw_3d/native_api folder and consists of standalone files that can be easily imported into your project to start using them.

For C++, include the header addons/debug_draw_3d/native_api/cpp/dd3d_cpp_api.hpp in your code and you will immediately have access to all DebugDraw3D classes. In the repository, you can find a test project utilizing C++ bindings.

For C#, all DebugDraw3D classes should be available to you immediately after installing the addon, since the C# project is located in the same folder as the Godot project.

Note: Please note that methods that return objects may return null if DebugDraw3D has not been loaded, which may cause a crash.