The Wheefun Graphics Library (WFGFX) library implements basic graphics primitives that are designed to be used portably between different backends. The basic implementation includes support for the C and C++ programming languages. WFGFX at its core provides interfaces for manipulating both raster and vector images through an abstract graphics context; in many cases, several low-level primitives exist for more direct manipulation.
Designed for use in embedded devices the mGSTEP libraries implement a subset of NeXT's OPENSTEP specification which has evolved into Apple's Cocoa Objective-C frameworks. The internal graphics rasterization supports rendering to an X11 or Linux frame-buffer based GUI.
Cross-platform command-line tool for creation of PDF documents from scans/photos of pages in JPEG (.jpg) format and the lightest weight ANSI C library to put multiple JPEG files into one PDF file.
You can add handwritten comments to PDF scans (over original images) with xournal: http://xournal.sourceforge.net/
It supports graphics tablets and saves comments to PDFs as vector data.
RenderStack is a support library for OpenGL 3+, currently in C++. Features currently for example basic window creation, mesh generation, wrappers for OpenGL programs, framebuffer, texture and vertex buffer objects.
Predecessor: https://github.com/tksuoran/renderstack_net
Successor: https://github.com/tksuoran/RenderStack
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