micro-draw.h

Header-only software renderer in C99.

Author: Giovanni Santini Mail: giovanni.santini@proton.me License: MIT

Features

• draw lines
• draw rectangles
• draw circles
• draw triangles
• draw grids
• RGBA, easy to add other formats
• PPM file reading and writing

Usage

Do this:

#define MICRO_DRAW_IMPLEMENTATION

before you include this file in one C or C++ file to create the implementation.

i.e. it should look like this:

#include … #include … #include … #define MICRO_DRAW_IMPLEMENTATION #include “micro-draw.h”

You can tune the library by #defining certain values. See the “Config” comments under “Configuration” below.

To enable PPM related functions, you need to #define MIRO_DRAW_PPM. More info: https://en.wikipedia.org/wiki/Netpbm

The usage is quite straight forward: you supply a data buffer to a micro-draw.h function which will fill the pixels accordingly. For example, you can use this buffer to render a frame on screen, or to save it as an image file, or do whatever you want.

Check out some examples in the test directory.

Code

The official git repository of micro-draw.h is hosted at:

https://github.com/San7o/micro-draw.h

This is part of a bigger collection of header-only C99 libraries called “micro-headers”, contributions are welcome:

https://github.com/San7o/micro-headers

TODO

• Implement micro_draw_from_ppm
• Add text rendering

Example

Conway's Game of Life