3D triangle renderer

Short interactive C program for rendering 3D triangles.

Compiling

The only requirements are the SDL2 devel files.

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.