atlasc is a command-line program that builds atlas texture from a bunch of input images.
- Cross-platform. Runs on linux/macOS/windows.
- No dependencies
- Outputs atlas description to human-readable json format. Generated images are png.
- Alpha trimming.
- Mesh sprites.
- Scaling
- Can build as static library
screenshot taken from rizz sprite example
It has built and tested on the following platforms:
- Windows: Tested on Windows10 with visual studio 14 2015 update 3 (Win64).
- Linux: Tested on ubuntu 16 with clang (6.0.0) and gcc (7.3.0). Package requirements:
- MacOS: Tested on MacOS High Sierra - AppleClang 9.1.0
atlasc image1.png image2.png -o output.json [extra args]
Arguments:
-h --help - Print help text
-V --version - Print version
-i --input=<Filepath> - Input image file(s)
-o --output=<Filepath> - Output file
-W --max-width(=Pixels) - Maximum output image width (default:1024)
-H --max-height(=Pixels) - Maximum output image height (default:1024)
-B --border(=Pixels) - Border size for each sprite (default:2)
-2 --pot - Make output image size power-of-two
-P --padding(=Pixels) - Set padding for each sprite (default:1)
-m --mesh - Make sprite meshes
-M --max-verts(=Number) - Set maximum vertices for each generated sprite mesh (default:25)
-A --alpha-threshold(=Number) - Alpha threshold for cropping (0..255)
-s --scale(=Number) - Set scale for individual images (default:1.0)
To build atlasc as static library instead of command-line tool, set STATC_LIB in cmake options.
cmake . -DSTATIC_LIB=1
There are three methods for creating atlases using the library:
- Load from image files and output to image file:
atlasc_make - Load from image files and return atlas in memory:
atlasc_make_inmem - Load from images loaded in memory and return atlas in memory:
atlasc_make_inmem_fromem
For more information, read the header file atlasc.h
- Support for islands. currently, there is a limitation that individual images should not have islands of pixels
- Optimizations. It's a very early implementation and probably some parts of it has to be optimized
- sx: Portable base library
- sjson: Fast and portable single-header C file Json encoder/decoder
- stb: stb single-file public domain libraries for C/C++
- sproutline: A small single-file library for sprite outline extraction and simplification
- delanuay: Relatively Robust Divide and Conquer 2D Delaunay Construction Algorithm
Copyright 2019 Sepehr Taghdisian. All rights reserved.
https://github.com/septag/atlasc
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