# 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.
- **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 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.

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.