./graphics/libspiro, Simplifies the drawing of beautiful curves

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Branch: CURRENT, Version: 1.1.0.20200505, Package name: libspiro-1.1.0.20200505, Maintainer: adam

Spiro is the creation of Raph Levien. It simplifies the drawing of beautiful
curves.

Using bezier splines an artist can easily draw curves with the same slope on
either side of an on-curve point. Spiros, on the other hand, are based on
clothoid splines which make it easy to maintain constant curvature as well as
constant slope. Such curves will simply look nicer.

Raph Levien's spiro splines only use on-curve points and so are easier to use
and more intuitive to the artist.

This library will take an array of spiro control points and convert them into
a series of bezier splines which can then be used in the myriad of ways the
world has come to use beziers.


Required to build:
[pkgtools/cwrappers]

Master sites:

Filesize: 412.643 KB

Version history: (Expand)


CVS history: (Expand)


   2021-10-26 12:47:26 by Nia Alarie | Files touched by this commit (800)
Log message:
graphics: Replace RMD160 checksums with BLAKE2s checksums

All checksums have been double-checked against existing RMD160 and
SHA512 hashes
   2021-10-07 16:13:27 by Nia Alarie | Files touched by this commit (800)
Log message:
graphics: Remove SHA1 hashes for distfiles
   2020-09-09 10:44:46 by Thomas Klausner | Files touched by this commit (3) | Package updated
Log message:
libspiro: update to 1.1.0.20200505.

- 2020-May-05
    * Libspiro Version 20200505 (1.1.0)
    * Bugfix for CVE-2019-19847 affecting {call-test14 to call-test19}.
    * Fix a memory access bug/error created earlier by patch 2017oct28
      Users using tagpoint libspiro20150702 are unaffected by this bug.
      Users using tagpoint libspiro20190731 are recommended to upgrade.
      Thanks to Frederic Cambus for calling attention to these faults.
    * Add optional 'end knot' for open curves (useful for displaying).
    * CRA Version also higher than so-bump 1.0.5 used on some distros;
      this maybe of interest to distros that bumped an earlier version.
    * Some garbage-in/garbage-out checks to verify we have 'ah' pairs,
      and we don't start with ']', or end with '['. Add libspiro.3 man.
    * Corrected set_di_to_x1y1() to use a constant bandwidth of 0.0005
    * Code improvements and bug fixes for better tagged/spiro results.
    * Several improvements added to further increase libspiro's speed.

- 2019-Jul-31
    * Libspiro Version 20190731 (1.0.0)
    * Corrected library to report correctly as next version up. This is
      probably a significant change, therefore bumped library to start
      at 1.0 even though backwards compatibility remains close to same.
    * Scaling bug fixed. Libspiro can accept points that can be shifted
      and/or scaled, this gives libspiro more flexiblity with graphics
      and templates. Large or small spiros created before this fix may
      need adjusting to fit the new calculations, but they're resizable
      and movable afterwards.
    * Added toggle switch ncq giving users additional functionality not
      easily accessible through spiro paths, including quad0 access.
    * Removed the excessively long package name, which you'll note as a
      so-bump change with Fedora and also Debian in naming this package.
    * Some Java alignment fixed - Thanks to Mingye Wang
    * Added new anchor and handle {'a','h'} which may be useful to many.
    * Fix System.arraycopy and README.md - Thanks to Wieslaw Soltes.
    * Include config header before DO_TIME_DAY - Thanks to Jeremy Tan.
   2020-01-19 00:36:14 by Roland Illig | Files touched by this commit (3046)
Log message:
all: migrate several HOMEPAGEs to https

pkglint --only "https instead of http" -r -F

With manual adjustments afterwards since pkglint 19.4.4 fixed a few
indentations in unrelated lines.

This mainly affects projects hosted at SourceForce, as well as
freedesktop.org, CTAN and GNU.
   2017-05-04 21:21:35 by Adam Ciarcinski | Files touched by this commit (5)
Log message:
Spiro is the creation of Raph Levien. It simplifies the drawing of beautiful
curves.

Using bezier splines an artist can easily draw curves with the same slope on
either side of an on-curve point. Spiros, on the other hand, are based on
clothoid splines which make it easy to maintain constant curvature as well as
constant slope. Such curves will simply look nicer.

Raph Levien's spiro splines only use on-curve points and so are easier to use
and more intuitive to the artist.

This library will take an array of spiro control points and convert them into
a series of bezier splines which can then be used in the myriad of ways the
world has come to use beziers.