晋太元中,武陵人捕鱼为业。缘溪行,忘路之远近。忽逢桃花林,夹岸数百步,中无杂树,芳草鲜美,落英缤纷。渔人甚异之,复前行,欲穷其林。 林尽水源,便得一山,山有小口,仿佛若有光。便舍船,从口入。初极狭,才通人。复行数十步,豁然开朗。土地平旷,屋舍俨然,有良田、美池、桑竹之属。阡陌交通,鸡犬相闻。其中往来种作,男女衣着,悉如外人。黄发垂髫,并怡然自乐。 见渔人,乃大惊,问所从来。具答之。便要还家,设酒杀鸡作食。村中闻有此人,咸来问讯。自云先世避秦时乱,率妻子邑人来此绝境,不复出焉,遂与外人间隔。问今是何世,乃不知有汉,无论魏晋。此人一一为具言所闻,皆叹惋。余人各复延至其家,皆出酒食。停数日,辞去。此中人语云:“不足为外人道也。”(间隔 一作:隔绝) 既出,得其船,便扶向路,处处志之。及郡下,诣太守,说如此。太守即遣人随其往,寻向所志,遂迷,不复得路。 南阳刘子骥,高尚士也,闻之,欣然规往。未果,寻病终。后遂无问津者。
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Version 2.x.x
* Bumped version to track OpenEXR
(Piotr Stanczyk)
Version 2.0.1
* Bumped version to track OpenEXR
(Piotr Stanczyk)
Version 2.0.0
* Bumped version to track OpenEXR
(Piotr Stanczyk)
* Numerous minor fixes, missing includes etc
Version 1.1.0.beta.1
* Added new module PyIlmBase : python bindings for IlmBase
(Nick Rasmussen)
* Added git specific files
(Piotr Stanczyk)
* Minor fixes for newer gcc versions and OS X.
(misc)
* Preparation for OpenEXR v2 release { remove message for final release }
(Piotr Stanczyk)
* Updated the so verison to 10
(Piotr Stanczyk)
* Initial use of the CMake build system
(Nicholas Yue)
Version 1.0.3
* Added support for enabling/disabling large stack optimisations, used in
halfFunction.h.
(Piotr Stanczyk)
* Added ImathNoise.(h/cpp) files. Initializes Perlin noise to match the
Renderman implmenetation.
(Pixar Contribution)
* Fixed a number of missing includes to comply with stricter
enforcement by gnu compilers.
(Piotr Stanczyk)
* Depracated compiler flag: -Wno-long-double since it is no longer
supported under OS X.
(Piotr Stanczyk)
* A minor API change to Imath::Frustum has been made: the functions
'near' and 'far' have been renamed to 'nearPlane' and 'farPlane' due
to conflicts with certain windows headers. The former alternate
accessor names for these values on windows ('hither' and 'yon')
remain, though should be considered deprecated.
(David Lenihan)
* Added SVD, eigenvalue solver, and procrustes fit calculations
to ImathMatrixAlgo.
(Chris Twigg, Ji Hun Yu)
* Added Imath::FrustumTest for frustum visibility testing.
(Eric Johnston)
* Fixed a stack corruption in the matrix minorOf functions.
(Nick Rasmussen)
* Visual studio 2008 project files have been added to the vc/vc9
directory, and several minor visual studio compile fixes have
been applied.
(Nick Rasmussen)
* Updated the so verison to 7.
(Piotr Stanczyk)
* Depracated the MacCode_Warrior and Shake submodules.
(Piotr Stanczyk)
Version 1.0.2
* Added support for targetting builds on 64bit Windows and minimising
number of compiler warnings on Windows. Thanks to Ger Hobbelt for his
contributions to CreateDLL.
(Ji Hun Yu)
* Removed a spurious restrict qualifier in the matrix manipulation code
that was causing the 64-bit MS compiler to generate code in release
mode that caused incorrect results.
(Ji Hun Yu)
* Added patches for improving universal binaries on OS X. Thanks to
Paul Schneider for the contribution
(Piotr Stanczyk)
* Imath::Box optimization: remove loops from methods by partially
specializing the class, for boxes of two and three dimensions.
(Piotr Stanczyk)
* Added explicit copy constructors to Imath::Matrix33<T> and
ImathMatrix44<T> to make conversions between float and double
matrices more convenient.
(Florian Kainz)
* Added slerpShortestArc() and euclideanInnerProduct() functions
to Imath::Quat<T>.
(Nick Porcino)
* Added 4D vector class template Imath::Vec4<T>.
(Nick Porcino)
* Copy constructors and assignment operators for Matrix33<T>
and Matrix44<T> are up to 25% faster. Added matrix constructors
that do not initialize the matrix (this is faster in cases where
the initial value of the matrix is immediately overwritten anyway).
(Nick Porcino)
* Rewrote function closestPointOnBox(point,box). Shortened
the code, improved numerical accuracy, fixed a bug where
closestPointOnBox(box.center(),box) would return the center
of the +Z side of the box, even if the +/-X or +/-Y sides
were closer.
(Florian Kainz)
* Rewrote function findEntryAndExitPoints() in ImathBoxAlgo.h.
Results are now consistent with those from intersect(), also
in ImathBoxAlgo.h.
(Florian Kainz)
* Made Vec2<T>::length() and Vec3<T>::length() more accurate for
vectors whose length is less than sqrt(limits<T>::smallest());
(Florian Kainz)
* Made Quat<T>::angle() more accurate for small angles.
(Don Hatch)
Version 1.0.1:
* Removed Windows .suo files from distribution.
(Eric Wimmer)
Version 1.0.0:
* Bumped DSO version number to 6.0
(Florian Kainz)
* Rounding during float-to-half conversion now implements
"round to nearest even" mode: if the original float value
is exactly in the middle between the two closest half values
then rounding chooses the half value whose least significant
bit is zero.
(Florian Kainz)
* Installation Tuning:
- Corrected version number on dso's (libtool) - now 5.0
- Separated ILMBASE_LDFLAGS and ILMBASE_LIBS so that test programs
in configure scripts of packages dependent on IlmBase can link
with static libraries properly
- eliminated some warning messages during install
(Andrew Kunz)
Version 0.9.0:
* Initial release of this code as a separate library.
Previously the libraries contained were part of
version 1.4.0 of OpenEXR
* New build scripts for Linux/Unix
(Andrew Kunz)
* New Windows project files and build scripts
(Kimball Thurston)