/** \page om_changelog Changelog

\htmlonly

<table border=1 cellpadding=4 cellspacing=2>


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<tr valign=top><td><b>2.4</b> (08/06/2013,Rev.882)</td><td>

<b>Significant interface changes</b>
<ul>
<li>The functions n_vertices(),n_edges().n_faces() return size_t now.</li>
<li>reserve and resize of the property vectors now take size_t</li>
<li>Fixed various other size_t conversions</li>
</ul>

<b>Vector Type</b>
<ul>
<li>vector_type min(const vector_type& _rhs) and vector_type max(const vector_type& _rhs) are declared const now. (Thanks to Vladimir Chalupecky for the hint)</li>
<li>minimize and maximize return vector_type& (reference) instead of vector_type (value) to allow chaining p.minimize(p1).minimize(p2). (Thanks to Vladimir Chalupecky for the hint)</li>
</ul>

<b>Core</b>
<ul>
<li>Allow PolyConnectivity::delete_edge to mark an edge as deleted, if there are no faces incident.</li>
<li>Don't use c headers in c++ files anymore</li>
</ul>


<b>IO</b>
<ul>
<li>Try to get rid of memory leak in IOManager(Changes the pointer used for IOManager to a static IOManager in the getter function)</li>
<li>Fixed writing face indices in different configurations regarding vertex texture coordinates and vertex normals (Thanks to Robert Luo for the patch)</li>
<li>Fixed a bug with OBJReader that prevented the material color to be loaded correctlyi(Thanks to Karthik Nathan for the patch)</li>
<li>Made STL Reader work, with the clear = false flag and Redundant lookup removed. ( Thanks to Peter Newman for the patch)</li>
<li>Missing include, preventing build on VS2012 (Thanks to Mageri Filali Maltouf for the patch)</li>
<li>Fixed various warnings reported by cppcheck</li>
<li>read_mesh now throws a compile error if an Options::Flag enum is passed as an argument instead of an Options object</li>
<li>Make OpenMesh PLY writer work as expected (Thanks to Chin-chia Wu for the patch)</li>
<li>Added colori and colorAi functions to BaseExporter which return Vec3i and Vec4i respectively</li>
<li>Adjusted the PLYWriter to use colori and colorAi for writing ascii files</li>
<li>Added a ColorFloat flag to Options, which can be set to write and read RGBA values as float instead of unsigned char</li>
<li>PLY writer and reader can now also handle color floats</li>
<li>OFF support for floats. Note that for reading binary OFF files with color floats, the user has to set the flag, that floats are expected</li>
</ul>


<b>Utils</b>
<ul>
<li>PropertyManager: Added PropertyManager::propertyExists() method.</li>
<li>PropertyManager: Enabled initialization of invalid PropertyManager.</li>
<li>Added color_cast from Vec3f and Vec4f to Vec3i and Vec3ui</li>
<li>Added color_cast from Vec4f to Vec4i and Vec4ui</li>

</ul>

<b>Decimater</b>
<ul>
<li>Make Hausdorff module thread safe. Removed static point vector. (Thanks to Falko Löffler for the fix)</li>
</ul>

<b>Tools</b>
<ul>
<li>Command Line Decimater: Added an explanation on how to use multiple modules to the commandlineDecimater help output</li>
<li>Command Line Decimater: The normal deviation module now also is a priority module in the commandlineDecimater tool</li>
<li>Gui Decimater: Added decimater related help output to DecimaterGui when 'h' is pressed as the application is running</li>
</ul>

<b>Unittests</b>
<ul>
<li>Added unittest for skipping iterators</li>
<li>Added unittest for collapse and is_collapse_ok</li>
<li>Added unittests for delete_face</li>
<li>Added unittests for circulators</li>
<li>Added test for writing and reading vertex colors to and from an OFF file. The default color type Vec3uc from DefaultTraits in Traits.hh is used.</li>
<li>Added a ply file written with MeshLab and a corresponding unittest</li>
<li>Added a unittest that writes and reads a binary PLY file with vertex colors</li>
</ul>

<b>Documentation</b>
<ul>
<li>Adjusted the documation for the decimation tutorial so that the priority module is correctly initialized</li>
</ul>

</tr>

<tr valign=top><td><b>2.3.1</b> (2012/12/20,Rev.778)</td><td>

<b>Core</b>
<ul>
<li>Return vertex handles of newly added vertices in split and split_copy for faces when passing points instead of handles</li>
<li>Fixed copy and paste typo in split_copy for face handle</li>
<li>Replaced fabs by the std methods to fix errors when using norms with double vectors</li>
</ul>

<b>IO</b>
<ul>
<li>Fixed missing cast in importer which lead to problems when using different vector type. (Thanks to Mario Deuss for the fix)</li>
<li>Fixed bug in OBJ reader, where some faces could be missing(Thanks to Ian Kerr for the Fix)</li>
</ul>

<b>Documentation</b>
<ul>
<li>Fixed Decimater example</li>
<li>Improved Docs for is_boundary() functions</li>
</ul>

<b>Unittests</b>
<ul>
<li>Added unittest for vertexOHalfedge Iterator</li>
<li>Added unittests for boundary vertices and faces</li>
<li>Added test for VectorT abs function</li>
</ul>


</tr>


<tr valign=top><td><b>2.3</b> (2012/11/12,Rev.758)</td><td>

<b>Core</b>
<ul>
<li>New garbage collection function with possibility to update existing handles</li>
<li>Fixed crash in garbage collection, if certain status flags are not available (warns in debug mode!)</li>
<li>Fixed some gcc-4.7 incompatibilities</li>
<li>TriMesh::split now returns the handle of the new vertex</li>
<li>Fixed delete_face function, not mariking halfedges as deleted, if the edge gets deleted.(Thanks to Maxime Quiblier for the bug report)</li>
<li>Added range based for loops compatible ranges to PolyConnectivity.</li>
<li>Added a function to copy single properties between entities of same type. (Thanks to Duncan Paterson for the patch)</li>
<li>Added functions to copy all properties between entities. (Thanks to Duncan Paterson for the patch)</li>
<li>Added split copy operations, which copy properties of splitted elements to the newly created ones. ( Thanks to Duncan Paterson for the patch )</li>
<li>Added flag to the property copy functions, if the standard properties should be copied along with the user defined ones</li>
<li>Added function to remove all primitives from the mesh, but leaving properties attached (mesh.clean() ) </li>
<li>Avoid double next_halfedge_handle call in collapse_ok</li>
<li>Fixed the usage of vector traits such that the traits are used and not the vector types value_type. (Thanks to Mario Deuss for the patch)</li>
<li>Fixed bug in halfedge normal computation, where a boundary halfedge was not correctly handled and caused a segfault.</li>
<li>Fixed missing this pointer in PolyMeshT.hh at calc_dihedral_angle </li>
</ul>

<b>Decimater</b>
<ul>
<li>Changed template parameters of the modules from Decimater type to Mesh type</li>
<li>Added multiple choice decimater (~4 times faster than the heap one, but no guarantee on accuracy)</li>
<li>Added mixed decimater, switching between mc decimater and standard decimater</li>
<li>Decimater modules don't need a decimater type as template argument anymore</li>
<li>Module parameters renamed</li>
<li>Added Decimater base class</li>
<li>Added the set_error_tolerance_factor function to ModBaseT and implemented it in inherited classes as necessary</li>
<li>Removed redundant tests in is_collapse_legal that where already performed in is_collapse_ok</li>
<li>ModHausdorff: Removed unused parameter</li>
<li>Added set_error_tolerance_factor to the modules, which can be used to scale the tolerance by a factor, allowing multiple decimation stages with increasing error tollerance</li>
</ul>


<b>Subdivider</b>
<ul>
<li>Fixed typedef problems causing compiler errors</li>
<li>Removed a wrong assertion in the refine method for vector handles</li>
</ul>

<b>IO</b>
<ul>
<li>Added precision option to openmesh writers</li>
<li>Fixed OBJ Reader not correctly setting per halfedge normals. (Thanks to Patrick Rauber for the report)</li>
<li>OM  Reader: Reader used different types on 32/64-bit systems. (Thanks to Martin Bayer for the patch)</li>
<li>OM  Reader: Also checks user options</li>
<li>STL Reader: Added the functionality to read meshes from istreams</li>
<li>STL Reader: Added the functionality to write meshes to ostreams</li>
<li>OBJ Reader: Follow of user requests (Warning! Old default behaviour was wrong, because the reader read everything, without checking for the user options!)</li>
<li>PLY Reader: Reader now checks the options set by the user and will skip components that are not requested
</ul>

<b>Utils</b>
<ul>
<li>Core/Utils: Added PropertyManager class.</li>
<li>Core/Utils: Added a Random Number generator with larger resolution (Windows supports only ~32k which is extended by this generator </li>
</ul>

<b>Apps</b>
<ul>
<li>QtViewer App tries to load textures for PLY (and other formats) too, if possible</li>
</ul>

<b>Unittests</b>
<ul>
<li>Added unittest for OBJ texture coordinates.</li>
<li>Added unittests for add_face.</li>
<li>Added unittest for getting handles and faces from the iterator.</li>
<li>Added unittest for creating a cube with 6 quads in a poly mesh.</li>
<li>Added unittest adding a cube with 12 faces triangulated to a trimesh.</li>
<li>Added unittest for MCDecimater</li>
<li>Added unittest for obj crash when colors are requested but not available</li>
<li>Added unittests (trimesh and polymesh) for split_copy</li>
<li>Added unittest for vector cross product</li>
<li>Added unittests for the adaptive composite subdivider</li>
<li>Added unittest for dihedral angle function</li>
<li>Added some more unittests for the PLY loader with different user options</li>
<li>Fixed gcc-4.7 warnings.</li>
</ul>

<b>Tools</b>
<ul>
<li>Added catmull clark subdivider. Thanks to Leon Kos for the code.</li>
</ul>


<b>Documentation</b>
<ul>
<li>More documentation for the add_face functions (and some code cleanup)</li>
<li>Updated doxyfile.config.in version</li>
<li>Updated documentation for garbage collection</li>
<li>Updated documentation for the vertex_split operation</li>
<li>Fixed typo on main page</li>
</ul>

<b>Build system</b>
<ul>
<li>Updated the Compiler flags construction to remove some unnecessary warnings with clang</li>
<li>Don't add the largeaddressaware flag when building with mingw</li>
<li>Readded missing DOXY_IGNORE_THIS definition to doxygen file</li>
<li>Output OpenMesh Build type in cmake header printout</li>
<li>Windows: Extended min max warning to allow undefs</li>
<li>Windows: Support DLL build of OpenMesh</li>
</ul>




</tr>

<tr valign=top><td><b>2.2</b> (2012/06/14,Rev.587)</td><td>

<b>Core</b>
<ul>
<li>Simplified iterators and made them integrate better with the STL. Specifically, value_type has changed from {Vertex,Edge,...} to {Vertex,Edge,...}Handle so that dereferenced iterators can actually be put to use, now.</li>
<li>Consolidated iterator code. Functionally equivalent but way cleaner than before.</li>
<li>Improved block in update_normals(), if there are no face normals (could cause a crash)</li>
<li>Fixed usage of operator | instead of dot</li>
<li>Added a check to is_collapse_ok in TriConnectivity if the edge is already deleted or not (Could cause crashes and non-manifold configs before).</li>
</ul>

<b>IO</b>
<ul>
<li>Made Binary IO readers multi-thread safe. (Thanks to Dominic Genest for the patch)</li>
<li>Fixed debug build crash on mac, reading from stringstream into emtpy string crashed when compiling with clang</li>
<li>Fixed stl reader by porting it to std string. It had serious problems in utf8 environments</li>
</ul>

<b>Geometry</b>
<ul>
<li>Added normalized function to VectorT which returns a normalized vector whithout modifying the current one.</li>
</ul>

<b>Utilities</b>
<ul>
<li>Fixed multiple connections of the omlog streams. (Thanks to Steffen Sauer for the patch)</li>
</ul>

<b>Unittests</b>
<ul>
<li>Added unittest for calling the normal computations.</li>
<li>Added unittests for ascii and binary stl files.</li>
</ul>


<b>Documentation</b>
<ul>
<li>Fixed doxygen warnings</li>
<li>Updated collapse function documentation</li>
<li>Updated triangulation function documentation</li>
<li>Updated normal computation documentations</li>
</ul>


<b>General</b>
<ul>
<li>Xcode 4.3 compatibility (Fixed issues that caused build errors with XCode 4.3)</li>
<li>Fixed some size_t uint conversion warnings</li>
</ul>

</tr>


<tr valign=top><td><b>2.1.1</b> (2012/03/01,Rev.544)</td><td>

<b>Tools</b>
<ul>
<li>Fixed wrong INCLUDE_TEMPLATE include definition headers for NormalCone, and some decimater modules.</li>
</ul>

<b>Unittests</b>
<ul>
<li>Only build the unit tests if google test has been found</li>
<li>Added flag to enable/disable building of unit tests</li>
</ul>

<b>Build system</b>
<ul>
<li>Drop Template only cc files (they produce no code and trigger some warnings)</li>
</ul>

</tr>

<tr valign=top><td><b>2.1</b> (2012/01/24,Rev.531)</td><td>

<b>Core</b>
<ul>
<li>Implemented is_collapse_ok for polymeshes</li>
<li>Implemented split_edge ( split(edgehandle,vertexhandle) ) for poly meshes</li>
<li>Bugfix for #248 (broken end definition for vertexFaceIter). Thanks to Patrik Rauber for reporting this bug.</li>
<li>Fixed compiler error because of extra ','</li>
<li>Fixed some compiler warnings</li>
<li>Added patch to speed up add_face function(Thanks to Stephen Webb).</li>
<li>Avoid some compiler warnings</li>
<li>Added color caster from vec3f to vec4f setting alpha to 1.0 as default</li>
<li>Added color caster from vec4i to vec4f converting alpha from 0..255 range to 0..1.0</li>
<li>Replaced (v0|v1) by dot(v0,v1) in calc_sector_angle as it fails to build otherwise (Thanks to Zhang Juyong for the fix)</li>
<li>Fixed some cppcheck warnings</li>
<li>Added support for halfedge normals(allows per vertex per face normals)</li>
</ul>

<b>Geometry</b>
<ul>
<li>Added normal cone datatype</li>
</ul>

<b>IO</b>
<ul>
<li>OFF Reader: Fixed crash on some files containing empty lines(Thanks to R.Schneider for the fix)).</li>
<li>STL Reader: Add empty mesh when reading empty stl file (don't fail as this is still a valid file)</li>
<li>PLY Reader: Support vertex normals (Thanks to Bruno Dutailly)</li>
<li>PlY Writer: vertex normal support (Thanks to Bruno Dutailly)</li>
<li>PLY Writer: Fixed output of colors</li>
<li>OBJ Reader: support for vertex colors after vertices or Vertex colors as separate lines. (Thanks to Bruno Dutailly)</li>
<li>OBJ Reader: Handle objs without faces(Thanks to Bruno Dutailly)</li>
<li>Added trim functions to BaseReader</li>
</ul>

<b>Decimater</b>
<ul>
<li>Added preprocess collapse function</li>
<li>Added decimate_to_faces function (Decimating to a target face count)</li>
<li>Added Hausdorff Distance module</li>
<li>Added edge length module</li>
<li>Added aspect ratio module</li>
</ul>

<b>Subdivider</b>
<ul>
<li>Modified base class to support fixed positions on already existing vertices</li>
<li>Added LongestEdge subdivider (Always split the currently longest edge, until a maximal edge length on the mesh is reached)</li>
<li>Updated Loop subdivider for the fixed vertex positions</li>
</ul>

<b>Unittests</b>
<ul>
<li>Enabled unittests for windows</li>
<li>Added test for VertexIter</li>
<li>Added test for EdgeIter</li>
<li>Added test for VertexFaceiter (with and without holes)</li>
<li>Added test for VertexOHalfedgeiter</li>
<li>Added test for FaceFaceiter (with and without holes)</li>
<li>Added test for collapse and is_collapse_ok operations</li>
<li>Added test for ply reader(points only)</li>
<li>Added tests for vertex colors in obj files</li>
<li>Added tests for ply reader with and without normals, ascii mode</li>
</ul>

<b>Doc</b>
<ul>
<li>Document that if OpenMesh is linked statically OM_STATIC_BUILD has to be defined on the executable to make readers work correctly</li>
<li>Improved MeshIO Documentation</li>
<li>Added doc about Skipping Iterators</li>
<li>Document behaviour of circulators on deleted elements</li>
<li>Get rid of most doxygen warnings</li>
<li>Improved documentation of the decimater and its modules</li>
</ul>

<b>Build System</b>
<ul>
<li>Append a 'd' to the lib name if in debug mode and not in release mode</li>
<li>Changed build directory contents on Mac (Build all binaries in Build dir only)</li>
<li>Disable Fixbundle on Mac (not required at the moment and hangs forever)</li>
<li>Added unittest directory and Build system (build explicitly with make unittests)</li>
<li>Skip fixbundle when building without apps on windows</li>
<li>On windows: If release and debug libs are build in same directory, install them both</li>
<li>On windows: Make sure that all dlls are copied</li>
<li>On windows: create start menu shortcut to Documentation</li>
<li>On windows: MinGW support</li>
</ul>

</tr>

<tr valign=top><td><b>2.0.1</b> (2011/05/20,Rev.389)</td><td>

<b>Apps</b>
<ul>
<li>Get rid of glew dependencies</li>
<li>Remove a lot of unused qt libraries which were linked before</li>
<li>Do not link libXi and Xmu as we don't need it</li>
<li>Added two new subdivision schemes (Interpolating Sqrt3 Labsik-Greiner and Modified Butterfly) to subdivider applications</li>
</ul>

<b>Core</b>
<ul>
<li>Work with gcc 4.6: ptrdiff_t not correctly included from std, Thanks to Ville Heiskanen for the patch)</li>
</ul>

<b>Tools</b>
<ul>
<li>Fixed bug in decimater where boundary check was using the wrong halfege(Thanks to Michal Nociar for the patch)</li>
</ul>

<b>Build System</b>
<ul>
<li>Updated debian dir (thanks to Jean Pierre Charalambos)</li>
<li>Removed glew depedency</li>
<li>Only one fixbundle on mac and windows</li>
<li>Run fixbundle only in standalone mode</li>
<li>Run fixbundle only once</li>
<li>Change debian control to reduce dependencies (glew,some qt libs)</li>
<li> Fixed BUILD_APPS macro</li>
</ul>

<b>Documentation</b>
<ul>
<li>Fixed error in image about edge collapses</li>
<li>Fixed wrong strip path in doxygen settings</li>
<li>Fixed compilation instructions for mac</li>
<li>Switched to white background with black text</li>
<li>Removed glew from docs</li>
</ul>

</tr>

<tr valign=top><td><b>2.0</b> (2010/12/21,Rev.356)</td><td>

<b>Core</b>
<ul>
<li>Improve computation of normals for poly meshes ( now the average normal is taken not the normal of one triangle)</li>
<li>Avoid % Operator in normal calculation (triggers compiler error on vectors of size other than 3)</li>
<li>Added status flag indicating that mesh reader duplicated primitives to avoid non-manifold configurations</li>
<li>Setting associated handles of iterator types invalid if reference mesh contains none of the respective entities.</li>
<li>Added halfedge colors</li>
</ul>


<b>IO</b>
<ul>
<li>PLY Reader: Avoid failure of file writing if face colors or face normals are requested for PLY files.</li>
</ul>

<b>Math</b>
<ul>
<li>Added missing include of string.h to VectorT.hh (Thanks to Justin Bronder for reporting this)</li>
<li>Added some vector norm functions for L1 norm, and absolute mean,max,min(Thanks to Michal Nociar)</li>
</ul>


<b>Tools</b>
<ul>
<li>OpenMesh mesh dual generator added (Thanks to Clement Courbet for providing the code)</li>
<li>Added Sqrt3InterpolatingSubdividerLabsikGreinerT and ModifiedButterFlyT (Thanks to Clément Courbet for providing the code)</li>
</ul>

<b>Apps</b>
<ul>
<li>OpenMesh mesh dual generator application added (Thanks to Clement Courbet for providing the code)</li>
</ul>

<b>Documentation</b>
<ul>
<li>Added search engine</li>
<li>Added treeview on the left</li>
<li>Generate subpage structure to make treeview more organized</li>
<li>Enabled Doxygen stl support</li>
<li>Fixed documentation for add_face and some other typos (Thanks to Yamauchi Hitoshi)</li>
<li>Added preprocessor directives such that doxigen parses vectorT correctly</li>
</ul>

<b>Build System</b>
<ul>
<li>Copy Doc directories to installers</li>
<li>Copy shared Qt Libs to build dir on windows</li>
<li>Updated glew and glut finders</li>
<li>Respect seperate settings for build types (release,debug,relwithdebinfo)</li>
<li>Extend macros acg_append_files_recursive acg_append_files to not include files starting with a dot</li>
</ul>

</tr>

<tr valign=top><td><b>2.0-RC5</b> (2010/03/08,Rev.305)</td><td>

<b>Core</b>
<ul>
<li>Fixed build error in function calc_dihedral_angle_fast</li>
<li>Made iterators/circulators stl compliant</li>
<li>Provide begin/end functions for circulators</li>
<li>mostream crash fixed (Thanks to Adrian Secord for providing the patch)</li>
<li>added colors to status flags for edges ( request_edge_color ... )</li>
<li>Fixed issue with wrong normal scalar type when using integer points and float normals ( Thanks to Clement Courbet for reporting this bug)</li>
</ul>

<b>Readers/Writers</b>
<ul>
<li>Fixed build error in STL writer</li>
<li>Fixed and enhanced PLY reader to improve handling of unknown properties (Thanks to Michal Nociar for the patch)</li>
<li>Fixed crash in Offreader with DOS line endings. (Thanks to Adrian Secord for the patch)</li>
<li>Fixed obj readers for some files containing tabs</li>
</ul>

<b>Apps</b>
<ul>
<li>OpenMesh progressive mesh generator readded</li>
<li>OpenMesh progressive mesh viewer readded</li>
<li>OpenMesh progressive mesh analyzer readded</li>
<li>OpenMesh progressive mesh synthesizer readded</li>
</ul>

<b>Documentation</b>
<ul>
<li>Updated Documentation front page</li>
<li>Added mesh navigation tutorial</li>
<li>Added iterator tutorial</li>
<li>Updated tutorial and docu for mesh circulators</li>
<li>Updated tutorial on deleting geometry</li>
<li>Examples for flipping and collapsing edges</li>
<li>Fixed a lot of doxygen warnings</li>
<li>Fixed some spellings</li>
</ul>

<b>Build System</b>
<ul>
<li>Fixed rpath issue when building and installing on MacOS</li>
<li>Fixed install target for MacOS (headers where not copied due to bug in cmake)</li>
</ul>

</tr>


<tr valign=top><td><b>2.0-RC4</b> (2009/11/18,Rev.227)</td><td>
<b>Core</b>
<ul>
<li> Added function for direct access to property vectors</li>
<li> Fixed clear functions to swap vectors. This frees OpenMesh memory when clear is invoked.</li>
<li> Fixed bug in handle() function when getting handle from given Halfedge (Reported by Rob Patro)</li>
<li> Memory leak in assignment Operator (Reported by Meng Luan, Thanks to Ilya A. Kriveshko for the patch)</li>
</ul>

<b>Readers/Writers</b>
<ul>
<li> Fixed reading ply files with unknown properties</li>
<li> Added support for texture coordinates in ply files</li>
<li> Add additional interface to readers/writers to use streams directly (allows direct writing to a streams)</li>
<li> OMFromat -> Fixed empty template parameter issue under msvc</li>
<li> OBJReader -> fixed loading multiple objs with material files</li>
<li> OBJWriter -> Fixed writing of normals, Missing / when skipping texture coordinates</li>
</ul>

<b>Build system</b>
<ul>
<li> Added missing c files</li>
<li> Build shared and static version under linux (cmake)</li>
<li> Added -DBUILD_APPS=OFF cmake flag to skip building of apps (cmake)</li>
<li> Added install target (cmake)</li>
<li> Added doc target (cmake)</li>
<li> Added doc-install target (cmake)</li>
<li> Generate sonames under linux (cmake)</li>
<li> Debian build dir for building Debian packages (Thanks to Jean Pierre Charalambos)</li>
<li> Package generator for windows. Builds an setup file containing precompiled static libs and includes for windows.</li>
<li> Throw warning if a min or max macro is defined under windows and suggest NOMINMAX (Thanks to Ingo Esser)</li>
</ul>

<b>Documentation</b>
<ul>
<li> Updated Documentation Mainpage</li>
<li> Updated properties tutorial to include all request_... functions</li>
<li> Updates for build instructions</li>
<li> Added Tutorial on deleting geometry</li>
<li> Fixed Traits example</li>
<li> Other minor fixes</li>
<li> Added tutorials as compileable source code</li>
</ul>

<b>Misc</b>
<ul>
<li> Updated debian dir to build debs (Thanks to Jean Pierre Charalambos)</li>
</ul>


</tr>

<!-- --------------------------------------------------------------------- -->

<tr valign=top><td><b>2.0-RC3</b> (2009/06/04)</td><td>
<b>License</b>
<ul>
<li>Relicense under LGPL v3 with additional exception for template inclusion</li>
</ul>

<b>Readers/Writers</b>
<ul>
<li> PLY writer fix ( thanks to Marc Hugi )</li>
<li> PLY reader fix ( wrong parsing of uchar binary data )</li>
<li> PLY reader warnings fix ( thanks to Ilya A. Kriveshko )</li>
<li> OBJ Reader now stores texture information in additional Mesh properties</li>
<li> OBJ reader/writer fixes</li>
</ul>


<b>Tools</b>
<ul>
<li> Smother now respects feature primitives </li>
<li> Decimater improvements and fixes ( thanks to Ilya A. Kriveshko ) </li>
</ul>

<b>Build system</b>
<ul>
<li> Updated directory structure </li>
<li> Changed libnames to libOpenMesh and libOpenMeshTools </li>
<li> cmake support </li>
<li> bugfixes to qmake build system </li>
<li> Keep some basic ACGMake files around ( acgmake is deprecated!! We will not provide support for it! Please use cmake or qmake instead. ) </li>
</ul>

<b>Other</b>
<ul>
<li> Fixed some warnings with latest gcc </li>
<li> Per halfedge texture coordinates added </li>
<li> Extended functions to get available properties </li>
</ul>

</tr>





<!-- --------------------------------------------------------------------- -->

<tr valign=top><td><b>2.0-RC2</b> (2009/02/17)</td><td> 
<ul>
<li>Fix for OBJ reader not reading texture coordinates correctly ( Thanks to Kamalneet Singh )</li>
<li>Fixed included Visual Studio files</li>
</ul>
</tr>

<!-- --------------------------------------------------------------------- -->

<tr valign=top><td><b>2.0-RC1</b> (2009/01/28)</td><td> 
<ul>
<li>Reader / writer have been updated</li>
<li>Some general bugfixes</li>
<li>The usage of acgmake has become deprecated since the last release. It has been replaced by qmake</li>
<li>Improved Documentation</li>
<li>Dropped support for acgmake which has been entirely replaced by qmake</li>
<li>Credits to Simon Floery, Canjiang Ren, Johannes Totz, Leon Kos, Jean Pierre Charalambos, Mathieu Gauthier </li>
</ul>
</tr>

<!-- --------------------------------------------------------------------- -->

<tr valign=top><td><b>1.9.7</b> (2008/10/13)</td><td> 
<ul>
<li>Ported applications to qt4</li>
<li>Bugfixes in Decimater</li>
<li>Improved Documentation</li>
<li>Dropped support for gcc 3.x compilers (This does not mean that it does not work anymore)</li>
<li>Dropped support for Versions of Visual Studio older than 2008</li>
</ul>
</tr>

<!-- --------------------------------------------------------------------- -->

<tr valign=top><td><b>1.1.0</b> (2007/02/26)</td><td> 
<ul>
<li>Fixed a VS 2005 compilation issue regarding the Sqrt3 subdivision class.</li>
<li>Fixed GCC-4.1 compilation problems.</li>
<li>The STL writer routine now correctly closes the <tt>"solid"</tt> block with <tt>"endsolid"</tt>.</li>
<li>The API of the vector class has been changed slightly due to problems with some versions of GCC:<br/>
The cast operator to the scalar type has been removed and replaced by
the function <tt>data()</tt>. Hence, existing code like
<blockquote>
<tt>Vec3f vertex;</tt><br/>
<tt>...</tt><br/>
<tt>glVertex3fv( vertex );</tt>
</blockquote>
has to be changed to
<blockquote>
<tt>Vec3f vertex;</tt><br/>
<tt>...</tt><br/>
<tt>glVertex3fv( vertex.data() );</tt>
</blockquote>
</li>
</ul>
</tr>

<!-- --------------------------------------------------------------------- -->

<tr valign=top><td><b>1.0.0</b> (2005/09/20)</td><td> 
<ul>
<li>Mainly fixed the bugs collected in beta4.</li>
<li>Slightly changed module handling in the Decimater.</li>
<li>Removed some parts to keep the project maintainable.</li>
<li>Fixed MacOS compilation problems.</li>
<li>Compatibility for latest gcc4 compilers.</li>
</ul>
</tr>

<!-- --------------------------------------------------------------------- -->

<tr valign=top><td><b>1.0.0-beta4</b> (2004/01/20)</td><td> 
<ul>
<li>Bugs fixed: 1.0.0-beta3:001</li>
<li>Documentation of module Core completed.</li>
<li>Documentation of module Tools::Decimater and 
    Tools::Subdivider completed.</li>
<li>Revised class structure for uniform subdivision.</li>
<li>Revised rule handling for composite adaptive subdivision.</li>
</ul>
</tr>

<!-- --------------------------------------------------------------------- -->

<tr valign=top><td><b>1.0.0-beta3</b> (2003/12/04)</td><td> 
The beta3 fixes only the known bugs in beta2.
<ul>
<li>Bugs fixed: 1.0.0-beta2:{001, 002, 003, 004}</li>
<li><b>Known Bugs</b>:
  <ul>
    <li>001: OFFReader: Option bit not cleared before analyzing .off header.
      <br>Symptoms: If a previously read .off file had normals/texcoords,
          a second read of another file w/o normals or texcoords, will return
          with option bits normals/texcoords enabled.          
    </li>
  </ul>
</li>
</ul>
</tr>

<!-- --------------------------------------------------------------------- -->

<tr valign=top><td><b>1.0.0-beta2</b> (2003/11/05)</td><td> 

<ul>

<li>Change of directory structure
    <pre>
+- %OpenMesh/
   +- Core/     # previously %OpenMesh
   +- Tools/    # previously OpenMeshTools
   +- Apps/     # previously OpenMeshApps
   +- Win/      # contains all solutions files and projects for MS VC++
   +- Doc/      # contains all documentation
    </pre>
    Note! The supplied script \c %OpenMesh/migrate.sh can be used to
    adjust include paths and ACGMakefiles. (It's not guarantied the
    script handles every case, but so far it did not missed a file to
    adjust.)
</li>

<li><b>Porting issues</b>: Due to a number of major changes in the
    structure of %OpenMesh a few incompatibilities have been
    introduced. Have look in <b>\c %OpenMesh/porting.txt </b> for hints how to
    treat your source when updating from 0.11.x to
     1.0.0.<br>Hint! The supplied script \c %OpenMesh/migrate.sh does a
    few of the necessary modifications. 
</li>

<li><b>The list kernel has been removed</b>
</li>

<li>Improved IO support:
  <ul>
  <li>Read/write ascii and binary STL </li>
  <li>Read/write ascii and binary OFF </li>
  <li>Support for vertex normals and vertex texcoords in OFF and OBJ</li>
  <li>Support importing diffuse material into face color property from
      OBJ files.
  </li>
  <li>Properietary binary format OM, supporting read/write of custom properties
  </li>
  </ul>
</li>

<li>Improved coordinate class OpenMesh::VectorT:
  <ul>
    <li> <tt>VectorT::vectorize(Scalar)</tt> is no longer static, now 
          it changes the vector. Use it e.g. to clear vector values. 
    </li>
    <li> Casts between two vector classes of the same dimension are now
         explicit. This avoids unwanted and expensive casts. 
    </li>
    <li> Optimized performance by manual loop-unrolling. These optimizations
	 are partial specializations for vectors of dimension 2, 3 and 4. 
         Since Microsoft's VC++ still does not support partial specialization
         and also provides rather poor loop-unrolling, users of this compiler
         are stuck to lower performance.
    </li>
  </ul>
</li>

<li>OpenSG Support:
  <ul>
    <li>New kernel type \c class TriMesh_OSGArrayKernelT<>.
      <ul>
        <li>Uses OpenSG geometry types!</li>
        <li>PolyMesh not supported, yet!</li>
      </ul>
    <li>Use \c OpenMesh::Kernel_OSG::bind<> to link a mesh obj with an
        \c osg::Geometry and vice versa.<br>Please note that both objects
        share the same data!
      <ul>
       <li>Binding a mesh to an \c osg::Geometry changes the content
           of the \c osg::Geometry!
       <li>Triangulates non-triangular faces!</li>
       <li>Multi-indexed geometry not supported!</li>
       <li>Transfer of vertex normals</li>
       <li>Limited capability to transfer colors: 
           So far, only \c osg::Color3f <-> \c OpenMesh::Vec3ub
      </ul>
    </li>
  </ul>
</li>

<li>Microsoft VC++ 7.0 projects files
  <ul>
    <li>Tutorial solution file
  </ul>
</li>

<li> New tools/applications:
     <ul>
     <li>\c Tools/VDPM (View Dependent Progressive Mesh Library)
       <ul>
         <li>\c Apps/VDProgMesh/mkbalancedpm - Create a balanced 
             progressive mesh.
         </li>
         <li>\c Apps/VDProgMesh/Analyzer - Create a view dependent 
             progressive mesh file.
         </li>
         <li>\c Apps/VDProgMesh/Synthesizer - A viewer for the VDPM file.</li>
       </ul>
     </li>
     <li>Apps/mconvert</li>
     <li>Apps/IvViewer - added support for Coin</li>
     </ul>
</li>

<li><b>Known Bugs</b>:
  The following bugs are related to the TriMesh_OSGArrayKernelT<>:
  <ul>
    <li>001: Cannot request/release the default attribute 
             <tt>halfedge_status</tt>.
    </li>
    <li>002: Cannot release the default attribute <tt>vertex_texcoords</tt>
    </li>
    <li>003: Assignment operator = () does not work properly.</li>
    <li>004: No copy-constructor available!</li>
  </ul>
</li>

</ul>
</td></tr>


<!-- --------------------------------------------------------------------- -->


<tr valign=top><td><b>0.11.1</b> (2002/12/02)</td><td>  
<ul>

<li>Bugs fixed: 0.11.0:{001, 002, 003, 004, 006}<br><br>
    006: Use acgmake version 1.1.1.
</li>

<li>Preprocessor warnings of gcc >= 3 fixed.
</li>

<li>Added some more dynamic ways to append properties to items:
    OpenMesh::Any and OpenMesh::PropertyT .
</li>

<li>VectorT: standard operator less added, Vec4f is now
    16-bit aligned using gcc compiler (for later SIMD usage).
</li>

<li>Use OM_STATIC_BUILD=1 when creating a static library.
    The static version of the library needs to included IOInstances.hh,
    which is done in that case.
    When compiling with MS VC7, the define is set automatically, as 
    the DLL-Version is not supported yet.
    acgmake (Version >= 1.1) set the define automatically when
    using the flag for static compiling.
</li>

<li>The read_mesh() methods now clears the mesh before reading a new one.
</li>

<li>Added can_read() and can_write() methods to the IOManager.
</li>


</ul>
</td></tr>


<!-- --------------------------------------------------------------------- -->
<tr valign=top><td><b>0.11.0</b> (2002/09/07)</td><td> 

<ul>

<li>Bugs fixed: 0.10.2:{001, 002, 003, 004, 005}
</li>

<li>Added MS VC++ 7.0 project files for the tutorial programms.
    (Have a look in <OpenMesh>/Win32/MSVC/)
</li>

<li>New Input/Output management, see \ref mesh_io. The new interface
    is as backwards-compatible as possible. Only the read_[off,obj]
    and write_[off,obj] methods do no longer exist. You should now
    include OpenMesh/IO/MeshIO.hh instead of MeshReader.hh and
    MeshWriter.hh. The old include files may be removed in a future
    release.
</li>

<li>Added: Generic algorithms may now define their own traits, these traits can
    be merged with other user-defined traits by the OM_Merge_Traits macro. 
    See tutorial \ref tutorial_06.
</li>

<li>Added generic handle <-> item conversions, see 
    <ul>
    <li> OpenMesh::Concepts::KernelT::handle() and
    <li> OpenMesh::PolyMeshT::deref().
    </ul>
    The kernel methods vertex_handle(), halfedge_handle(), edge_handle(), 
    face_handle() should no longer be used, but are still existent for 
    compatibility reasons. You can hide them by uncommenting the define
    OM_HIDE_DEPRECATED in OpenMesh/System/config.h.
</li>

<li>Internal methods, like Vertex::halfedge_handle() or Vertex::point() are 
    now hidden, since the respective kernel methods (like 
    MeshKernel::halfedge_handle(VertexHandle) or 
    MeshKernel::point(VertexHandle)) should be used instead.
</li>

<li>Added convenience methods for the mesh kernels: 
    <ul>
    <li>OpenMesh::Concepts::KernelT::n_halfedges()
    <li>OpenMesh::Concepts::KernelT::halfedges_empty()
    <li>OpenMesh::Concepts::KernelT::halfedge_handle(unsigned int _i)
    </ul>
</li>

<li><b>Known Bugs</b>: 
    <ul>
    <li>001: Ambigous auto_ptr<> cast in ExporterT.hh.</li>
    <li>002: BaseImporter and BaseExporter have no virtual destructor.</li>
    <li>003: Reader does not work correctly, when reading from a istream.</li>
    <li>004: cross(VectorT, VectorT) returns Scalar instead of VectorT.</li>
    <li>005: PolyMeshT::calc_face_normal() may give wrong results if the
             first 3 points of the polygon are colinear or concave.</li>
    <li>006: Reading/writing (MeshIO) of files does not work when using acgmake
             with SuSE 8.1.</li>
    </ul>
</li>

</ul> 
</td></tr>

<!-- --------------------------------------------------------------------- -->

<tr valign=top><td><b>0.10.2</b> (2002/06/25)</td><td> 
<ul>
<li>Bugs fixed: 0.10.1:{001, 002} 
</li>

<li>The edge collapse checking method TriMeshT::is_collapse_ok() is now more
    restrictive. It prohibits cases that could be handled by the
    halfedge data structure, but would probably not be regarded as a
    legal mesh.
</li>

<li>The vertex split operation creates up to 3 new edges and 2 new
    faces. Up to now it was possible to pass handles to edges/faces
    that should be used instead of creating new ones. This option has
    been removed in order to get a cleaner interface.
</li>

<li>The MeshCheckerT has been changed slightly: it omits deleted elements, so
    one does not have to perform a garbage collection before checking the mesh.
    It also checks for the halfedges building cycles around faces or
    boundaries.
</li>

<li><b>Known Bugs</b>: 
    <ul>
    <li>001: OpenMesh::PolyMeshT::operator=() does not return \c *this.
    <li>002: OpenMesh::DefaultAttributer added unnecessary 20 bits to the 
             elementary mesh types.
    </ul>
</li> 
</ul> 
</td></tr>

<!-- --------------------------------------------------------------------- -->

<tr valign=top><td><b>0.10.1</b> (2002/04/22)</td><td> 
<ul>
<li>Bugs fixed: 0.10.0:{001, 002, 003, 004, 005} 
</li>

<li>Added: Predefined attribute \c TexCoord. 
</li>

<li>Added: Support for MS VC++ 6.0 IDE with Intel Compiler. 
</li>

<li>Added: Tutorial 6 on generic algorithms. 
</li>

<li>SharedCoordArrayKernelT is now derived from ArrayKernelT.
</li>

<li>Added: Assignment operator operator=() for PolyMeshT and TriMeshT.
</li>

<li>Added: Method TriMeshT::is_collapse_ok(), checking topological conditions
    for a given halfedge collapse.
</li>

<li><b>Known Bugs</b>: 
    <ul>
    <li>001: PolyMeshT::delete_face(): Outgoing halfedge handle of
             a vertex can incorrectly be invalidated. Influences
             vertex circulators, find_halfedge() and therefore
             add_face().<br>
             Workaround: Replace <tt>v0</tt> by <tt>v1</tt> in line 585 of
	     PolyMeshT.cc
    </li>
    <li>002: TriMeshT::collapse(): Some special cases are incorrectly
             handled when collapsing boundary halfedges. The same
             cases are also incorrect for the inverse operation
             TriMeshT::vertex_split() operation. 
    </li>
    </ul>
</li>
</ul>
</td></tr>

<!-- --------------------------------------------------------------------- -->

<tr valign=top><td><b>0.10.0</b> (2002/03/19)</td><td> 
<ul>
<li>Interface for specifying the traits classes simplified (see
    Traits.hh).  
</li>

<li>Changed attribute handling; the attributer class (the class that
    adds and registers attributes to mesh items) can be provided by
    the user.
</li>

<li>Removed MyMesh::Face::n_vertices() and
    MyMesh::Face::set_n_vertices().
</li>

<li>MeshWriter::write_* changed accordingly.
</li>

<li>Bug fix: PolyMeshT::delete_[face,edge,vertex] now work correctly.
</li>

<li>Removed cyclic dependency between items and kernel, because MS
    VC++ cannot handle the resulting template forward declaration
    :-(. Therefore the <tt>Base::Refs</tt> class, given for the traits
    classes, no longer provides the types \c Vertex, \c Halfedge, \c
    Edge, and \c Face. It now only provides all handle types, the
    point and the scalar type.
</li>

<li>Finally: MS VC++ 7.0 supported.
</li>

<li><b>Known Bugs</b>:
    <ul> 
    <li>001: TriMeshT.cc::vertex_split(): call to undefined
        method Face::set_n_vertices().<br>
        Workaround: Comment out the two occurences of the call.
    </li>
    <li>002: Missing <tt>\#include
        <OpenMesh/Mesh/Kernels/ListKernel/ListHandles.hh></tt>
	in OpenMesh/Mesh/Types/PolyMesh_ListKernelT.hh.
    </li>
    <li>003: Special case in TriMeshT::edge_collapse(): when collapsing a 
        boundary vertex into an interior one, the outgoing halfedge of
        the resulting vertex my not be a boundary one.
    </li>
    <li>004: PolyMeshT::delete_edge did not pass its argument 
        _delete_isolated_vertices to PolyMeshT::delete_face.
    </li>
    <li>005: PolyMeshT::assign() was not linked because of an \#if error.
    </ul>
</li>
</ul>
</td></tr>

<!-- --------------------------------------------------------------------- -->

<tr valign=top><td><b>0.9.2</b> (-) </td><td> 
<ul>
<li>PolyMeshT::add_face() now detects more topological errors.
</li>

<li>Added mesh kernel methods: remove_last_[vertex,edge,face]().
</li>

</ul>
</td></tr>

<!-- --------------------------------------------------------------------- -->

<tr valign=top><td><b>0.9.1</b> (2002/02/07)</td><td> 
<ul>
<li>Changed the main namespace from ACG to OpenMesh.
</li>

<li>Added invalid handle constants, e.g. PolyMeshT::InvalidVertexHandle.
</li>

<li>Mesh provides circulators: PolyMeshT::vv_iter(VertexHandle).
</li>
</ul>
</td></tr>

<!-- --------------------------------------------------------------------- -->

<tr valign=top><td><b> 0.9</b> (2002/01/25)</td><td> 
<ul>
<li>initial release</li>
</ul>
</td></tr>


</table>

\endhtmlonly

**/
