colorang

A (slightly) new way to visualize RGBA color

There are two folders, 'Web' and 'C'

The Web folder is the website demo colorang.org

The Javascript code is messy, but functional. There is one main bug I know about, where it seems like HTML canvases premultiply the alpha into the RGB channels, causing a major loss of precision at low transparency values. However, if you select your color on a "normal" alpha value (i.e. not super low like 0-10), then you decrease the alpha, it works fine.

You can just open the index.html in any web browser and the colorang should load. It uses no dependancies.

The C folder contains a C99 compatible implementation of the colorang so you can embed it in your application

There is also a copy of Sean Barret's stb_image_write so you can export the colorang to pngs if you want to look at it. All you need to do is uncomment the

You can compile the C code with any C compiler:

MSVC:  cl /O2 colorang.c
GNU:   gcc -O3 colorang.c
CLANG: clang -O3 colorang.c 

The C code compiles without warnings with the -Wall or /W4 flags (unless you uncomment and use the stb_image_write file, as those have warnings).

Hopefully this is of use to you. If you want an explaination of how it works / my reasonings for developing it, check out my blog post at Pursuit of Gamedev

So long!