- Small codebase, easy to drop-in: just copy
rzr.candrzr.hinto your project, public domain/MIT. - Monochrome-only, 8-bit grayscale output.
- Stack-based drawing:
- Shapes (pushes 1): circles, polygons (concave) (+helpers).
- Boolean operations (pops 2, pushes 1): union, difference, intersection.
- Transforms: translate, rotate, scale.
- Point queries: determines if a point lies inside or outside of your shape (useful for GUI mouseover stuff).
- "MxN rendering": useful when you want to "stretch" the center of a render, like for UI frames, buttons, etc.
(There's an example in the unit test, and it's explained better in
rzr.h). - Reasonably fast? Merges subpixel-scanline span lists into
memset()'able pixel spans. - Depends on libc/libm, but doesn't
malloc(); you provide the memory it uses.
Generated with: cc -DDEMOS -Wall -O0 -g rzr.c -o demo_rzr -lm && ./demo_rzr.
The demo uses stb_image_write.h for writing PNGs and msf_gif.h for GIFs.
You can also try: cc -DUNIT_TEST -Wall -O0 -g rzr.c -o test_rzr -lm && ./test_rzr