Asymptote 1.44

Asymptote is a powerful descriptive vector graphics language that provides a natural coordinate-based framework for technical drawing. Labels and equations are typeset with LaTeX, for high-quality PostScript output.
A major advantage of Asymptote over other graphics packages is that it is a programming language, nor just a graphics program.

Main features:>
- provides a portable standard for typesetting mathematical figures, just as TeX/LaTeX has become the standard for typesetting equations.
- inspired by MetaPost, with a much cleaner, powerful C++-like programming syntax and floating-point numerics;
- runs on all major platforms (UNIX, MacOS, Microsoft Windows);
- mathematically oriented (e.g. rotation of vectors by complex multiplication);
- LaTeX typesetting of labels (for document consistency);
- uses simplex method and deferred drawing to solve overall size constraint issues between fixed-sized objects (labels and arrowheads) and objects that should scale with figure size;
- fully generalizes MetaPost path construction algorithms to three dimensions;
- compiles commands into virtual machine code for speed without sacrificing portability;
- high-level graphics commands are implemented in the Asymptote language itself, allowing them to be easily tailored to specific applications.

Enhancements:
- Full interactive 3D support has been added to Asymptote, with the option ofgenerating and embedding 3D PRC data in PDF files or rendering scenesdirectly with Asymptotes own fast OpenGL-based renderer. The implicitcasts from 3D to 2D objects were removed (in favour of call explicit callsto project). A path[][] texpath(string s) routine was added to convertstring into the paths that TeX would fill. Add boolean stroke parameter wasadded for shading (and clipping to) stroked paths. The Circle and Arcroutines were fixed. Autoscaling of graph axes limits is now disabled bydefault. A path3 path3(path p, triple plane(pair)=XYplane) constructor wasadded; the path3 routines were moved to C++ code. Optimized and robustversions of the intersection, windingnumber, inside, and surface extremaroutines were implemented. The lighting routines were replaced by theOpenGL model. Each Asymptote process once again uses a separatecurrentpen. A segmentation fault and an incorrect parameter in theDelaunay triangulation routine were fixed. This major overhaul of thethree-dimensional graphics has necessitated a few backwardsincompatibilities.