1February 19, 2017: Release 1.14 2 3 This release consists of bugfixes and minor portability improvements. 4 A number of bugs triggered by malformed BMP files have been fixed, 5 including CVE-2016-8685 and CVE-2016-8686. Error reporting has been 6 improved. The image size is now truncated when the bitmap data ends 7 prematurely. It is now possible to use negative dy in bitmap 8 data. Portability has been improved to encompass C++11. The default 9 compiler is now clang if available. Thanks to Nelson Beebe and Martin 10 Gieseking for reporting portability issues, and to Agostino Sarubbo 11 for reporting bugs. 12 13October 22, 2015: Release 1.13 14 15 Some critical bugs in the processing of BMP files were fixed. These 16 bugs allowed the program to be crashed, or potentially to be abused 17 in other ways, by feeding it specially crafted BMP files. Thanks to 18 Tomasz Buchert and Agostino Sarubbo for reporting these bugs. 19 Portability was improved for C99 and for MSVC++. Thanks to Peter 20 Breitenlohner, Nelson Beebe, and Martin Gieseking for reporting 21 portability issues. 22 23March 24, 2015: Release 1.12 24 25 Fixed memory overflow bug triggered by very large bitmaps. Fixed 26 binary file mode on 64-bit Windows. Portability improvements. 27 28February 19, 2013: Release 1.11 29 30 A GeoJSON backend was added; thanks to Christoph Hormann for 31 contributing this. Support for bitfields in the BMP format was 32 added. A minor change was made to the behavior of the alphamax 33 parameter; a value of 0 now gives a true polygon. 34 35August 19, 2011: Release 1.10 36 37 A DXF backend was added. The output is in the drawing interchange 38 format used by computer aided design software. Thanks to Jonas 39 Benedett Dorr for testing. The Gimppath backend was changed to be 40 compatible with current versions of Gimp. The EPS, PDF, and SVG 41 backends now use high-resolution bounding boxes. The default scaling 42 of the EPS, PDF, and SVG backends is now fixed at 72dpi. A new option 43 --flat was added to the SVG backend. A new option --tight was added 44 to remove whitespace around the input image before calculating its 45 scaling and placement. 46 47December 21, 2010: Release 1.9 48 49 The xfig and eps backends were improved, and a fixed pagesize PDF 50 backend was added. Support for BMP version 4 and version 5 files, as 51 well as top-down BMP files, was added. Minor speed improvements to 52 Potrace and major speed improvements to mkbitmap. A Gaussian blur 53 option was added to mkbitmap. Libtool is now used to build and 54 optionally install the Potrace library. An optional simplified 55 progress bar was added for dumb terminals. This release also contains 56 some portability improvements, cross-compilation improvements, and 57 minor bug fixes. 58 59April 9, 2007: Release 1.8 60 61 This release contains minor bugfixes and portability improvements. 62 Rotation is now implemented in the PDF backend. 63 64March 6, 2005: Release 1.7 65 66 This is a bugfix release. A bug in the progress bar code, which 67 caused arithmetic exceptions on some 64-bit architectures, has been 68 fixed. 69 70February 27, 2005: Release 1.6 71 72 This release contains an algorithm improvement that leads to a 73 speedup of 20-60% over previous versions of Potrace. A new PDF 74 backend was added, courtesy of Tor Andersson. An option --progress 75 was added for displaying a progress bar. The Windows version of 76 Potrace now uses MinGW instead of Cygwin, eliminating the need to 77 install a special DLL alongside the executable programs, and solving 78 some problems with wildcards and executable PostScript files. Some 79 spurious "premature end of file" messages were eliminated. The 80 core functionality of Potrace was separated into a library with a 81 documented API, making it easier for developers to incorporate 82 Potrace into other GPL-licensed software. 83 84July 8, 2004: Release 1.5 85 86 The LZW patent has finally expired in Canada. Therefore, postscript 87 level 2 compression can now be implemented directly within Potrace, 88 without having to rely on the external "compress" program. This 89 release makes the necessary corrections. 90 91March 6, 2004: Release 1.4 92 93 This is a bugfix release. Fixed the bug which sometimes caused 94 Potrace to "hang" on large input files. Also fixed some bugs in the 95 compression code. The presence of the "compress" program is now 96 determined at run-time, rather than compile-time. No new features or 97 command line options were added. 98 99January 15, 2004: Release 1.3 100 101 This is primarily a bugfix release. Version 1.2 fatally crashed when 102 applied to an empty (all white) bitmap. The options -2 and -3 are now 103 ignored when unsupported, rather than causing an error. There were 104 some improvements to the test suite, autoconfiguration, and 105 portability. The bounding box in the xfig backend was fixed, and the 106 postscript output now has better page encapsulation. Bitmaps of 107 dimension 0 are now tolerated better. 108 109December 23, 2003: Release 1.2 110 111 New experimental Gimppath and XFig backends were added. A separate 112 program mkbitmap was added, which can be used as a preprocessor to 113 Potrace. It turns greyscale or color images into high-quality 114 bitmaps with optional scaling and filtering. New options --opaque, 115 --group, and --fillcolor were added for greater flexibility in 116 generating editable PostScript and SVG output. The bitmap 117 decomposition algorithm was improved and can now take advantage of 118 64-bit platforms. Portability and autoconfiguration were vastly 119 improved, and a test suite was added. Runlength encoded BMP files can 120 now be read. Some bugs in command line options were fixed. 121 122August 18, 2003: Release 1.1 123 124 The most important new feature of this release is an SVG (scalable 125 vector graphics) backend. This file format can be read by vector 126 graphics manipulation programs such as sodipodi, as well as web 127 browsers with an SVG plugin. I also added PGM, PPM, and BMP as 128 additional input file formats. The new --blacklevel and --invert 129 options control how non-black-and-white images are converted to 130 bitmaps before being processed by Potrace. The implementation of a 131 critical function has been improved to make Potrace even faster on 132 large input files; this results in speedups of up to factor 3.3 133 relative to Potrace 1.0. Autoconfiguration was improved, and the code 134 was polished to compile on more different architectures. The error 135 messages for wrong file formats were also improved. 136 137August 10, 2003: Release 1.0 138 139 First public release. 140