What is ortho?

Ortho turns a 3D model of a vehicle into a set of clean black and white line drawings, showing it from the front, back, left, right, top, bottom, and a cross section through the middle. These are the kind of flat reference sheets people use as a blueprint when building or painting a model, in this case aimed at cars and other vehicles, including mods for games like Assetto Corsa and BeamNG Drive. Everything runs on your own computer and nothing is uploaded anywhere, and no AI is involved, the drawings come directly from the geometry of the model file you provide. The easiest way to use it on Windows is to double click a file called Start App.bat, which checks whether Python is installed, sets up everything the program needs the first time, and then opens the tool in your web browser automatically. If you would rather do it by hand, you install Python yourself, making sure to tick the option that adds it to your system path, then install the required libraries with pip, and start the program with a single command. Once it is running, you open a local web address in your browser, drag your model file onto the page, and the tool lists every named part found inside it, all switched on by default. You choose which views you want and pick your line colors, then click Generate to produce the drawing. If the result looks cluttered or has stray shapes that should not be there, you can untick the suspicious parts in the list and generate again, no 3D software required, just comparing the picture to what a real vehicle should look like. Supported file types include obj, dae, stl, gltf and glb, and kn5 files from Assetto Corsa, which the project reads using its own file parser built from scratch. The README also includes detailed troubleshooting steps for common Python installation problems on Windows.