Asymptote: 2.68 Released

Asymptote http://asymptote.sourceforge.net is a powerful descriptive vector graphics language for technical drawing, inspired by MetaPost but with an improved C++-like syntax. Asymptote provides for figures the same high-quality level of typesetting that LaTeX does for scientific text.

Floating point exceptions in OpenGL libraries are now masked. A normalization used to render tubes was fixed. A Label align(Label,dir) function was added for aligning label normals. A new settings.compress=true option controls PDF image compression. A bool isometry(transform) function was added. Various bugs in the geometry module were fixed. The transpose function ignores uninitialized elements. Null fields are treated as undefined values in cvs mode and in line mode. Uninitialized rendering variables were fixed. A RELEASE variable was added. Logarithmic graphs of surfaces are supported. Files are opened without assuming an asy suffix. Support for Ghostscript 9.53 was implemented. The end argument of Margin functions is now optional. A function cputime().change.clock that returns the high-resolution elapsed wall clock time was added. A --disable-curl option was added. The centering of slides was fixed. Null characters and null strings are supported in the replace function. Configuration without readline support was fixed. In binary mode, an entire file can be read into a string. The getc function now works properly when reading the NUL character. Reproducible builds are supported.