3D triangle renderer
====================

Short interactive C program for rendering 3D triangles.

Compiling
---------

The only requirements are the SDL2 devel files.

```sh
make
```

Controls
--------

- **W,A,S,D** for moving.
- **M** for toggling mouse-lock.
- **T** for toggling line drawing.
- **arrows** for rotating camera.
- **J,K** for moving vertically.
- **I** for object importing.
- **=/-** for increasing/decreasing speed.

Object files
------------

Object files are a modified/simplified version of standard .obj files.
Available potions are the following:

1. **M** *factor* - multiply factor. Vertices added afterwards will have their coordinates multiplied.
2. **v** *x* *y* *z* - add vertex.
3. **f** *v1* *v2* *v3* - add triangle face with following vertices.
4. **F** *v1* *v2* *v3* *color* - add triangle face with color and following vertices.
5. **C** *color* - triangles added afterwards will have this color.

Lines that start with any other character will be ignored.

To-Do List
----------

- use matrix math instead of trigonometric formulas.
- crop triangles close to screen.
- fix Z depth.
- faster drawing.
- config file with controls and defines.
- organize functions in files properly.