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/*! \page changelog Changelog
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- <b>OpenFlipper 2.1 ( 2015/01/21 , 20181 )</b>
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     - <b>General</b>
        - Refactored multiple classes in order to separate glew from Qt5GL.
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     - <b>ACG</b>
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        - Algorithms
             - EdgeConvexPolygonIntersection added to Algorithms
        - Drawmesh
             - new feature: flexible vertex layout in drawmesh
             - Remove second copy of vertex buffer, preparation for flexible vertex layout
             - remove face-colors from drawmesh vertex format
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	- GL
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             - DrawModes: Convenience function to add property based drawmodes. refs 1895
             - Rendering: Fix for wireframe/hiddenline on poly meshes.
	     - Rendering: unified edge rendering for triangle and poly meshes refs 
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	     - Support shininess in lighting code
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             - improve MSAA support in FBO
             - rename MSFilterWeights file to AntiAliasing
             - documentation update in FBO, AntiAliasing, IRenderer
             - check link status before calling glUseProgram refs #2064
             - fix resizing of msaa fbos
             - update msaa helper utils
             - FBO: init texparams only for non msaa textures to avoid glerrors
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             - GLMatrix: extraction of clipping planes in a projection matrix
             - GLSL::Shader: add suppport for tessellation shaders
             - Add convenience functions to property layers of DrawMode
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             - Added own glError to String function to avoid the glu version which is deprecated on mac
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	- IRenderer
	     - Additional functions to make sure, the fbos are handled correctly
	     - Convenience functions added
	     	- save/restoreActiveFbo(fboId, viewport)
                - copyDepthToBackBuffer(tex, scale)
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             - Fix specular lighting of directional lights in the shader pipeline
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             - add setting for alpha testing function in render objects refs #398
             - compute size of attributes for missing input buffers refs #2069
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             - Renderobjects can request a depth map of the scene, which is optionally rendered in a z-prepass
             - new feature: scene layer and overlay layer with RenderObjects
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        - Line Node
             - use quad extrusion shader in line node to control the width refs #1305
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        - MaterialNode
             - Made MaterialNode's JSON (de)serialization Qt5 compatible.
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        - MeshNode
             - Fixed 0 pointer deref in meshnode. Closes 2048
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             - RenderObjects of the MeshNode: fetch texture bound to opengl slot 0, if no textureMap was specified refs #2050
             - apply small depth offset in wireframe shaders refs #2081
             - optimized picking in meshnode (via shaders)
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             - disable optimized face,edge picking for point clouds refs #2139
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	- MeshCompiler and DrawMesh
	     - Fix for face colors on wrong faces by Christopher.
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             - const correctness in mesh compiler refs #2060
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             - implemented GL_TRIANGLES_ADJACENCY mode in meshcompiler
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             - more robust estimation of split-count in MeshCompiler refs #2195
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        - Picking Implementation
             - Introduced a new shader based picking which is way faster and uses less memory for its buffers
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	- ShaderGenerator
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             - Add support for include statement in ACG shader load function
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	     - Write source location of shader input files as comments into code
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             - ShaderGen: control glsl version in shader descriptor
             - Extension to replace lightingcode
             - Add comments to shaders to keep track of input files used to compose shaders
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             - Tesselation Shader support
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             - Support for relative paths
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	- ShaderCache
	     - Added clear function
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             - add function which compares shader files with the last modified timestamp
             - Add support to query static shader programs from the shader cache
        - Shader Pipeline
             - Shader based pipeline takes the global ambient light into account now.
             - Lighting in fixed function and shader pipeline should be unified now.
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        - TextureNode
             - npot texture support in TextureNode refs #2218
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        - Tools
             - Unified color generator interfaces.
             - workaround for memory corruption, when a multisampled FBO is resized
             - New TextureBuffer class in ACG for opengl texture buffers
             - ACG Textures can now be bound to any texture slot by passing the texture unit to bind()
             - Add filter weight computation for reading from multisampled textures
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        - Uniform Pool
             - fix wrong storage type for integer uniforms
        - Mesh Tools
	     - Added function to grow edge selections.
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        - Documentation
             - Renderer tutorial
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     - <b>Core</b>
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        - General
             - Output more information on crash
             - Disallow copy construction of Stackwalker
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             - Improved view decoding
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        - Interface
	     - PluginFunctions: Added fovy function.
	     - ViewerProperties: Added const accessor for glState.
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             - remove double updating of menubar it fixed crash on macos refs #2036
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             - Added setViewAndWindowGeometry to core scripting functions.   
             - Improved PluginFunctions::getSaveFileName
             - Function to invalidate pick caches via plugin functions.
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        - IO
             - Fixed crash in save functions, not correctly checking if the object to be saved exists
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        - UI
             - add gui elements for shader timestemp function (see options -> files) and reload shaders
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             - Added F2 shortcut for Viewer Snapshot
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        - QtBaseViewer
             - Cleaned up QtBaseViewer code a bit.
	     - Let the glwidget do the buffer clearing, not the renderers (simplified renderer plugins)
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             - Fixed opaque rendering of background for screenshots with alpha channel
             - fix snapshot output format for transparent objects
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             - Refactored glWidget::decodeView.
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             - Fixed ortho projection when moving multiple objects #2234
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     - <b>Plugins</b>
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         - Components
             - Add nogui support
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         - Datacontrol
             - Allow copy and pasting of materials (Requires json support)
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             - add functions for adding empty groups. thanks to Vladimir Chalupecky for providing the code closes #2219
             - update layout when object is deleted, fix ungroup-visibility problem closes #2222
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         - Depth Peeling
	     - Code refactoring and cleanup
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             - Front to back peeling back to work
             - User can switch between dual peeling and front to back peeling via options menu
             - Post-processor support: Output of front depth layers in hardware depth buffer
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         - File-OBJ
             - fix: load pointclouds from obj files doesn't insert a face anymore refs #1995
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             - fix grouping with non manifold geometry closes #2130
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         - File-PTS
             - use default OpenFlipper settings instead of arbitrary default options for loading PTS files
             - update the viewport once a PTS file is opened
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         - File-VTK
             - fix wrong count in the POLYGONS header (Thanks to Vladimir Chalupecky for the patch)
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         - Info Meshobject
             - set minimum size of the bounding box image closes #2121
             - set minimum size for the whole window refs #2121
             - adjust size of dialog after setting all the variables
             - add scrollbar
             - reduces base height closes #2121
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             - Added face valence info. (Important for PolyMeshes.)
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         - MemInfo
             - Added better measurement of free memory for Linux platforms.
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         - Move
             - no crash, if the manipulator is sized too small
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             - Provide Manipulator context menu for all plugins that use a manipulator
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         - Primitives
             - Added Sphere generator based on subdivision (Thanks to Vladimir Chalupecky for the original patch). closes #2041
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         - PropertyViz
             - Added new vector viz mode.
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             - Visualization (and picking) of Vec2*.
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         - Remesher
             - Fix cppcheck warning in Remesher
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             - Fixed boundary errors in Remesher 
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         - Renderer Toon
             - Add options dialog for toon renderer
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         - Selection MeshObject
	     - patch for lasso selection of point clouds, mapping function is correct refs #2056
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             - Simplified sphere mesh selection code closes #2129 
             - Added trace edge path function
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	 - Shader Pipeline
	     - Stereo support and new buffer handling in shader pipeline renderer
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         - Skeletal Animation
             - ui updating fix refs 2046
	 - Subdivider
             - Sripting slots don't use ui anymore ( Thanks to  Vladimir Chalupecky for the patch)
             - Added more user output to inform on errors or unsupported algorithms.
             - Fixed slot descriptions ( the subdivider is not a smoother ;-) )
             - Updated Vsi xml
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         - Toon Shader
	     - Added new renderer plugin for toon shading
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     - <b>Data Types</b>
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         - HexahedralMesh and TypePolyHedralMesh
	     - Added convenience functions to get a hexahedral or polyhedral mesh directly from the object id. closes #2199
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         - Plane Object
             - update plane for the new renderer
             - deferred updating and creation of the plane vbo it fixes gpu crash on mac refs #1896
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         - PolyLine
             - Added preimage handling to polylines
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         - Mesh Object
             - avoid initialization of ward shader, which might cause trouble on intel graphics refs #2064
             - remove old ward shader refs #2068
         - VolumeMesh Object
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             - Fixed issue #2061 -> Comparison of boolean to itself.         
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     - <b>Build System</b>
         - set debug/release output_dir for mac with bundles enabled closes 1993
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         - enable stacktrace for macos refs #2055
         - remove duplicates in the argument list of moc closes #2062
         - Find tetgen quietly, Prefer global 1.5 version of tetgen
         - Get cgal path from environment variable
         - Find 64 bit poco dir
         - Strange glut include fixed
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         - Added pbr lib finder
         - Windows packaging support for VS2013 redistributable
         - Qt5: Fixed RCC Resource compiler problems (wrong path!)
         - Don't use ftgl anymore and don't warn 
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         - QWT6 Integration
         - Speedup for cmake generators
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     - <b>Documentation</b>
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         - Raised Doxygen version of files to 1.8.7
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	 - Added documentation for shader generator
         - update docu in ACG IRenderer.hh
         - Strange parser error in doxygen fixed
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- <b>OpenFlipper 2.0 ( 2014/02/13 , 18180 )</b>
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     - <b>Significant interface changes and Bugfixes</b>
         - Interface: Don't use allow addEmpty in FileInterface anymore (deprecated long time ago and basically unused! The type plugins handle this signal anyway.)
         - Interface: Renamed and extended functions to block scenegraph updates. OpenFlipper::Options::loadingSettings replaced by 
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             - sceneGraphUpdatesBlocked()
             - blockSceneGraphUpdates()
             - unblockSceneGraphUpdates()
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         - Bugfix: Fixed undirected shooting function returning wrong nearest triangle (was always the one with the most negative distance) in BSP
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         - Interface: RayCollision is now a sorted vector conbining standard pairs of the hit handles and their distance to the hit
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         - Interface: Render Interface: Implemented capabilities check for renderer interface
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         - Interface: ACG, Renamed the basecolor functions in the core to defaultColor
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         - Bugfix: Emit object updates for all objects in scene, if -1 is given as updated object. (Should not be used, as it is very slow for a large object count!)
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         - Logic: if an object gets deleted, no updatedObject (-1) signal will be emitted now. Use the objectDeleted slot from LoadSaveInterface.
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         - Build: Default to relesae build type by default 
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         - Interface: Changed selection interface the qicons have been replaced by QString. The path to the icon has to be given now This avoids the problem of qpixmap creation in the selection plugins, when no gui is present Added deprecation warning, to informa about deprecated plugin interface usage
         - Interface: Don't emit updatedObject(-1) anymore if an object gets deleted. Use the slot objectDeleted from LoadSaveInterface instead.
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     - <b>ACG</b>
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         - Documentation
             - Documentation for DrawModes and ShaderGenerator
             - Examples for property-based drawmodes
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         - General
             - Added simple scenegraph analysis function to get bounding box and multipass number
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             - Fixed standard rendering pipeline to use the basecolor now (emmisive)
             - Renamed the basecolor functions in the core to defaultColor
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             - Support for Geometry shader
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	     - created a GLError header file under ACG/GL/ that holds all current GL error checking functions and macros
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         - Geometry/BSP
             - Removed dependency from bsp to OpenFlipper (not required and causes unnecessary linking)
             - Added directional BSP ray shooting including unit tests
             - Fixed undirected shooting function returning wrong nearest triangle (was always the one with the most negative distance)
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             - Interface: RayCollision is now a sorted vector combining standard pairs of the hit handles and their distance to the hit              
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             - Integrated optional infinity override for custom types that do not have std::numeric_limits<Type>::infinity()
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             - Added function to BSP that only returns the closest ray collision
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         - Geometry/Spherical
             - New functions
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         - Geometry
             - Made function distPointTriangleSquared a real template function
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             - Fix: Quaternions: Changed left and right mult matrices to commonly used definition
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         - GlState
             - Added additional overlay color to material stuff and glstate
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         - Heap 
             - gcc-4.7 build fixes
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         - Halton Colors
             - Added seed to HaltonColors.
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         - Math
             - Dual Quaternion: New operator to access dual quaternion elements sequentially
             - Dual Quaternion: Made interpolate function a template to allow other vector types than std::vector
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	 - MeshNode
	     - New MeshCompiler and DrawMesh versions with improved speed and less memory overhead
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         - Scenegraph:
             - translationManipulator: Added support for render objects 
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             - Added functions for new rendering interface, replacing the opengl standard pipeline
             - StatusNodes can now use the buffers of a drawmesh (reuse them to use less memory and faster rendering)
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             - PolyLineNode: Implementation of new rendering interface
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             - ManipulatorNode : manipulatorMoved should now only be emitted for manipulator objects that were actually touched
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	     - MaterialNode: Added optional JSON-Serialization of materials if QJson is available.
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         - Shader Utils
             - Added functions to bind and get Fragment data locations
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         - Unittests
             - Unittests for BSP
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             - Unittests for algorithms
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         - TextureNode
             - Improved texture rendering
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     - <b>Core</b>
         - Speedup getObject in Pluginfunctions, as most functions used the slow recursive version instead of the std map accelerated version in PluginFunctions   
         - Speedup: Modified the resetScenegraph stuff which ran the bounding box and multipass actions too often (Approx. factor 4 speedup in this function)
         - Speedup: Block updates wile loading files from the command line
         - Speedup: Reset drawmodes only when not locked
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         - Speedup: Don't send view updates to plugin, if scenegraph updates are locked
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         - Speedup: Removed unnecessary update function from resetSceneGraph (already updated on demand)
         - Speedup: Removed redundant call in BaseObjects next function
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         - Fix: Fixed action mode toggling via meta or alt keys (only worked, if already switched between modes before hitting the keys)
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         - Fix: Video capture could crash due to illegal thread access
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         - PerObjectData
             - Added set of standard per object datas
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         - RecentFiles
             - common/RecentFiles: Added obtainPathName convenience function
         - UI
             - Fix: Now the sidearea is not cleared everytime a toolbox is added, thus preventing the loss of active states
             - Fix: Toolboxes are sorted according to the given order now
             - Feature : State of toolboxes added via script is restored
             - Fix : States of toolboxes is remembered when changing views
             - Default changed: Set pick toolbars to default in scene again
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             - Improved Plugin Info Dialog
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             - Store StatusBar visibility in properties and apply it correctly when toggling fullscreen modes or when restarting the application
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             - Fix: toolbar buttons keeps checked, if pressed twice
             - Fix: hide lightmode toolbar when leaving pickmode
             - Fix: fix reinitialization of viewmodes if toolbar is toogled (from hidden to visible)
             - Feature: add hotkeys toogle the visibility of the tool/menubar
             - Modification: Changed Show Hide Toolbar key to N
             - Added Renderer Info and Postprocessor Info widgets to check the new renderers
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             - Moved fov mouse wheel to ctrl key + wheel.
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             - Updated Splash screen
	     - Spin boxes and the like don't steal mouse wheel focus when scrolling anymore.
	     - Added post processor manager
	     - Fixed logger performance issue
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         - Help Browser:
             - Unregister old doc files correctly
             - Fixed startpage for windows
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             - fix: does not unregister help files if unnecessary
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         - Load/Save
             - Adjusted the openFunctions and loadWidget to handle several plugins than can load the same file format
             - A default plugin choice for each file format can also be saved via OpenFlipperSettings
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         - Rendering
             - Removed most of the Rendering Code and moved it into The Classic Rendering Plugin
         - RendererManager
             - Added function to get renderer id from name
         - GLWidget
             - Moved stereo flag into ViewerProperties
             - Removed unused blending flag
             - Moved cursor painter to ViewerProperties
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             - Modified ViewerProperties to allow setting near and far plane via one function only.
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	     - fix crash when picking an object that has just been removed
	     - Postprocessor pipeline
	     - Fixed snapshot function
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         - About Dialog
             - Display more information about the OpenGL and Shader Versions
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         - Fix: Don't create icons, when no gui is available
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         - MeshTools
             - Cleanup the MeshSelection file a bit (Make all referneces const ref) (Thanks to Vladimir Chalupecky for the report)
             - Cleanup MeshInfo to be more consistent (Use pointers for all mesh parameters) (Thanks to Vladimir Chalupecky for the report)
	     - Change cog to get a pointer to the mesh
	     - Change getBoundingBox to get a pointer to the mesh
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         - Snapshots
             - Optionally store mesh comments as metadata in screenshots.
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         - General
             - Improved VS 2012 compatibility (Thanks to Duncan Paterson for the patch)
             - changed some c header includes to c++ pendant
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     - <b>Interfaces</b>
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         - About Interface
             - New Interface to allow plugins to add e.g. License information to OpenFlippers about dialog
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         - File Interface
             - load and save filters from file plugins can now contain several file formats seperated by ";;" (for example: "Alias/Wavefront ( *.obj );;AutoCAD DXF ( *.dxf )"
             - 
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         - RPC Interface
             - Support for rpc calls with return value and up to 6 parameters
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         - Render Interface
             - Implemented capabilities check for renderer interface
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         - PluginFunctions
             - Fixed not existing ( wrong name) of ObjectExists
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     - <b>ObjectTypes</b>
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         - General
             - Speedup: Removed the get_unique_name functions when adding any object, as this would cause linear time when adding new objects.
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             - Merged the two implementations of QtPlaneSelect.
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             - Comment functionality added to BaseObject.
             - seperate internal target/source selection
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         - BSplineCurve
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          dd "groupObject" scriptfunction which adds objects to an existing group   - Make proper use of templates to enable different data types
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             - Adapted b-spline curve class to use template scalar type instead of hard-coded double.
             - Getting const ref as point parameter
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         - Plane
             - Get rid of immidiate mode when rendering
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             - Update buffers only when necessary
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	     - Fixed bounding box computation for plane
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         - PolyLine
             - Added function to create circles
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             - Follow new color spec in polyline nodes
             - Fixed picking through object when using polyline interaction.
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             - Fixed polyline merge crash, when picked object is not a poly line
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 	     - Cloning capabilities
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         - Skeleton
             - Added include guard to AnimationHandle class
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         - VolumeMesh
             - Added draw mode for colored vertices
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             - Phong rendering
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	     - Single texture support
	     - Fixed client states which were not reset by the VolumeMeshNode
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     - <b>Plugins</b> 
         - Backup 
             - Fix: Now the signal aboutToRestore is also correctly emitted in slotUndo()
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         - Color
             - Added Vector4 Scripting datatype
             - VSI Meta data for color plugin
             - Scripting functions to set object color
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	 - Components
	     - New plugin in Free branch to split mesh into separate components
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         - Datacontrol
             - Added context menu item to copy material to targeted objects.
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             - Speedup: Accellerate Treeitem lookup for child by a map. This should speedup large object count handling significantly.
             - Speedup: Remove duplicate function calls
             - Speedup: Only handle lightsources in file opened, if they are added
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             - Speedup: Various improvements (and unittests to check them)
             - Scripting Feature: add "groupObject" scriptfunction which adds objects to an existing group
             - Scripting Feature: add "getGroupElements" script function
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         - Decimater
             - Added multiple choice decimater (up to 4 times faster but with less accuracy)
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             - Add init button for keeping initialization
             - Fix: Decimater objects are cleared before an undo happens
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             - Nogui support
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         - All File Plugins
             - Added option to set output precision of numbers in ascii based file formats
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         - File Bundler
             - New Plugin
             - Read output from bundler (SplatCloud, Cameras)
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         - File PLY
             - Fixed wrong casting of colors ( written files contained only black and white colors
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             - Adjusted PLY writer to be dataformat compliant
         - File OBJ
             - Fixed OBJ reader crash on files with only points (points are treated as vertices of a polymesh now)
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             - Fixed writing face indices in different configurations regarding vertex texture coordinates and vertex normals
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         - File Off
             - Fixed reading of some binary files, which were not opened correctly
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             - fix: alphacolor per face is saved only once
             - fix: removed spaces in OFF Header
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	 - File PolyLine
	     - Added backwards compatible load/save for bezier and circle poly lines.
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         - File VTK
             - Added open volume mesh support for vtk reader
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             - VTK files with polydata will be loaded correctly now and not loaded like e.g structed points
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         - Isotropic Remesher
             - Increased toolbox maximum
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         - Info Mesh Object
             - Use a hash map to cash the target objects to avoid linear time lookup for the targets
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             - Don't show genus, when the object is not closed
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         - Info VolumeMesh
             - Added Plugin-InfoVolumeMeshObject. Only very limited support.
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         - Material Picker
             - New Plugin to store and set materials on objects
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	 - MemInfo
	     - New Plugin showing memory usage
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         - MeshRepair
             - Fix: flip orientation does not produce holes anymore
             - New snap boundary function 
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             - Added fix topology function
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             - Added a function to fix a mesh by snapping vertices in a specific range into one vertex
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             - Increased maximal values for the spin boxes
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             - UI Cosmetics
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         - Move 
             - Added scripting function for the transformation of handle vertices.
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             - fixed a problem with applying the manipulator transformation to all targets
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             - moveSelection should now only store backups if elements were actually selected and transformed
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	     - Move plugin extension to support volume meshes.
	     - Don't create automatic backups in Move scripting functions ( Moved up to the slots triggered via ui), as the calling plugins should create the backups.
	     - transform normals with the invers transposed of the transform matrix
	 - PolyLine
	     - Polyline circles
	     - Added PolyyCircle metadata
	     - Added bezier polyline functions.
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         - Primitives Generator
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             - Added cylinder generator (with scriptable parameters) 
             - Add size and position parameters to all add** slot and script functions
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         - Render Shader Pipeline
             - New renderrer, based on a shader replacement of the standard pipeline
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         - Render Classic
             - The classical Renderer taken from the core and moved into a plugin ( Important step to use the new Renderers via Core Profiles)
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         - Property Vis
             - Increased maximal allowed scaling factor for vectors
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             - Support build without skeleton data type
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             - Refactored, new features:
	         - Changed plugin's architecture so that it can now be extended to support generic object types (implementation for OpenVolumeMesh has been added).
                 - Read/write properties from/into files. Also reading props into existing properties is now supported.
                 - Multiple properties can be selected (multiple toolboxes appear) and combined.
                 - Documentation has been added.
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             - plugin is now informed about object deletion
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         - Remesher
	     - remeshing with face selection (code provided by Vladimir Chalupecky. thanks)
	     - switch selection face/vertex selection in gui and add scriptfunctions
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         - Render DepthPeeling
             - Fixed shader not working correctly on mac
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         - Ruler Plugin
             - Some function and class change for better readability and multi ruler support
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	     - Double click now removes ruler.
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         - Scripting Plugin
             - The filename of the script is now no longer saved when a script is executed.
             - fixed a bug where using the VSI plugin could cause an accidental overwrite of the previously saved script
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         - SelectionBase
             - Speedup selection base plugin by caching the number of objects of the specific types (no linear time check anymore)
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         - SelectionMeshObject
             - Fixed action mode toggling via meta or alt keys
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             - Made conversion function scriptable
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             - Fixed bug in selection plugin when switching between halfedge and edge selection with sphere
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             - Use Mousewheel + shift to grow or shrink selections
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             - Implemented scripting interface for closest boundary selection.
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	     - Emitting correct update types for primitive selections.
	 - SelectionVolumeMesh
	     - adds lasso and floodfill selectionmode for OVM
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         - Skeletal Animation
             - Speedup Skeletal Animation Plugin by only caching skeletons.
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         - Type PolyLine
             - Only add frounding math, if cgal is actually used
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         - Type Splat Cloud
             - Name group after splatcloud
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         - ViewControl
             - Feature to check and disable modeling areas seperatly
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             - Implemented the setEyePosition function for the ViewControl plugin
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	     - Added sceneradius function
	     - Improved behavior of visualization mode selection.
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         - VSI 
             - Moved VsiMetadata for move into move plugin
             - Added scripting functions to modify the scenegraph matrix
             - Added scripting funcrion to update ui while in scripting mode
             - Update view and update ui vsi meta data
             - Additional scipting function to jump out of loop
             - Added compose vector function
             - Added Vector4 Scripting datatype
             - Added compose Vector4 VSI block
             - Handle is_connected for inputs as well
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     - <b>Scripting</b>
         - Core: Added getToolbox method to scripting interface.
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         - Core: Added scipting functions to block and unblock the scenegraph (speedup while handling large object counts)
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         - Core: Added function to exit application with an error (Usefull for unclean exit in unit tests)
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     - <b>Documentation</b>
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         - Added documentation about core keys
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         - Removed example path from doxyfiles for user documentation
         - Added colored point rendering stuff.
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     - <b>License management</b>
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	 - License manager now parses any number of license requests out of garbled junk.
	 - Added function to keygen that allows mangling new plugin fingerprints into existing hardware hashes.
         - Added cmake option to build license key generators independently of license manager.
     - <b>Debugging</b>
	 - Integrated debugging via Stackwalker on window ( Writes CrashDump.txt to OpenFlipper Home directory)
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     - <b>Build system</b>
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	 - Cmake switch to use external OpenMesh
	 - New finders for openni and nite
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         - Default to release build type by default
         - Added plugin collections to cleanup directory structure
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         - Extract library path for glut on windows
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         - Added workaround, if found is defined in lowercase for optional dependency
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         - Increased Qt warning to 4.8.4
         - Added cmake finder for mpfr library
         - Made gurobi finder work on mac
         - Don't build file plugins, if their data type is missing
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         - Added plugin cmake option to pass definitions seperate from flags.
         - Added option to pass definitions from finder directly via plugin dependencies
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         - Added target OpenFlipper_package on mac, which calls fixbundle first.
         - fixbundle is no longer called automatically on mac.
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         - Identify clang in the compiler settings
         - Improved branding support
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	 - Basic Qt5 compatibility and finders
	 - Removed obsolete ftemplate-depth, as the defaults should be fine
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- <b>OpenFlipper 1.3 ( 2012.07.16 , 15046 )</b>
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     - <b>ACG</b>
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         - DrawModes
             - Implemented property based draw modes
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         - General
             - Ongoing work for more advanced renderer interfaces
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         - Geometry 
             - Improving BSP tree implementation
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         - GL
             - Added ShaderGenerator
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         - Math
             - Matrix4x4: Added determinant method
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             - Fixed GLMatrixT constructor 
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             - Added Vec3b
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         - LightNode
             - Compiler fix: Work around c++0x problem with initialization of a vector
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         - LineNode
             - Bug fix: LineSegment mode when no colors are specified
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         - Material2Node
             - Removed (unused anyway and users might get confused)
         - ShaderUtils
             - Handle matrices as uniforms
         - TextNode
             - Get rid of ftgl and freetype requirements
             - Render textured quad to be able to support higher OpenGL profiles
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         - TranslationManipulatorNode
             - fix: manipulator color circles changed
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         - QtWidgets
             - Added spinbox for better control of the shininess
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     - <b>Core</b>
         - Help
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             - Help Browser shows message if page wasn't found
             - Fix: back/forward button works when link in textbrowser was clicked
             - Fix: Help browser tree view selection will be updated if a link to another document is clicked.
             - Fix: double loading home page at the beginning
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             - Fixed warning due to connection to non existing slot.
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             - Fix: Build error with gcc-4.7 due to missing include in About.cc
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         - IO
             - BaseObject now stores the filename of an object from which it was loaded
             - BaseObject now stores the path of an object from which it was loaded
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             - added an option to the save settings input dialog for objects with no given extensions, such that a chosen extension can be applied to all object without preset types
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         - Load/Save
             - Added a QInputDialog so that the user can choose a file extension for newly created meshes when saving the settings.
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             - Bugfix: Delete all is equivalent to clear all, so emit the clear all signal as well
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         - Rendering
             - Bugfix: Improved recovery of broken scene setups
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         - UI
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             - Paste View: keep toolbarsize when window size is not changed
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             - Paste View: Added extra button to paste view and the window size
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             - Paste View: Integrate the toolbox size into the copied view
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             - Default changed when removing objects (Defaults to yes now)
             - Improvement: When switching to orthogonal mode, the coordinate system now switches to ortho projection, too
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             - Fix: Snapshot function on windows did not capture the gl widget correctly (fixes #943)
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             - Fix: Fixed bug where multiview layout box has not been updated correctly
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         - BaseViewer
             - Get rid of the twenty region pick functions in the qtbaseviewer (Merged to one)
         - PluginFunctions
             - Fixed plugin function for isProjectionOrthographic which did not work for the active_viewer. (Thanks to Bengt Rosenberger for the report)
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         - Process management
             - Enable process support without GUI
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     - <b>ObjectTypes</b>
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         - BSplineCurve
             - Fixed colors
             - Fixed crash with empty spline curve on windows
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         - Plane
             - Improved implementation and Documentation
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         - PolyLine
             - New objecttype representing polygonal lines (with smoothing, dragging, mesh interaction and many more features)
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         - Skeleton 
             - Removed the using namespace part to avoid collisions (corresponding plugins have been updated too)
         - SplatCloud
             - New property system to append properties to the cloud and its entities like in OM
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     - <b>Plugins</b>
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         - Color
             - Documentation
             - Default alpha value to 1.0
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         - Decimater
             - Bugfix: Async slider and number box after loading a new mesh
         - FileHeightField
             - Improved speed of the ui when selecting the load area
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         - File OBJ
             - The default group is not set to be a polymesh even if it does not have any faces
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             - Added missing ifdefs for bspline curve object type
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             - Single bspline-curves or bspline-surfaces in obj files that do not belong to any groups are no longer grouped in the datacontrol plugin
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             - Fix: bspline curves and bspline surfaces should be grouped correctly now
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         - File OFF
             - Fix: Endless loop (moved an end-of-file check in readFileOptions so that eof is detected in time)
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             - Fix: Correctly set path for the loaded objects
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             - Fix: Added some additional checks so that empty lines and comments are skipped.
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         - FilePLY
             - Fix: Ignore unknown properties instead of crashing
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         - FileSTL
             - View all after loading file
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         - File VTK
             - vtk objects now just have the filename as a name rather than the full path
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         - Isotropic Remesher
             - Fix: Added a check if we are trying to collapse an edge of length 0 in the isotropic remesher
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         - Ruler
             - New plugin to measure the euclidean distance between objects in the 3D scene.
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         - MeshObjectInfo
             - Support for point clouds represented by meshes
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         - MeshRepair
             - Fix: Don't only detect error and crash but detect error and warn about it (without crashing)
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         - Move
             - User Documentation
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         - PropertyVis
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             - Added color viz for vector properties
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         - Scripting
             - Sort list of available functions
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         - Selection Base
             - Allow selection plugins to restrict its selection metaphors to specified data types (or all if none is given).
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         - SelectionMeshObject
             - Added scripting function to select vertices based on the value of one of their components
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         - Subdivider
             - Added Catmull Clark subdivider from OpenMesh (Thanks to Leon Kos for providing the code)
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         - TypeHexaHedralMesh
             - Automatically set ambient color when adding empty mesh.
         - TypePolyHedralMesh
             - Added translucency rendering options to polyhedral mesh type plugin.
             - Automatically set ambient color when adding empty mesh.
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     - <b>Scripting System</b> 
        - Vector type
             - Added functions for add, multiply, scalar product, norm, sqrnorm, normalize and sub
        - Matrix type
             - Added matrix vector multiplication
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     - <b>Build System</b>
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        - Mac
             - Added flag OPENFLIPPER_CALL_FIX_BUNDLE to disable bundle creation on mac os
        - Win
             - Fixed silent install of Visual Studio 2010 redistributable
             - Make clear that a missing redistributable is only a warning.
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             - Fixed a problem when building VS2010 binaries containing qwt on a machine where qwt is also available but build with VS2008
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        - Linux
             - Some cmake-Finder upgrades to support Fedora and to be more clean
        - General
             - Allow Compiler Defines per plugin
             - Updated qt tested version to 4.8.1
             - Added Finder vor CPLEX and Metis
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             - Added option to disable libraries which are not required 
             - Updated some finders
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     - <b>Documentation</b>
        - Added Documentation about creating own data types
        - Integrated OpenVolumeMesh documentation
        - Included bib files for OpenVolumeMesh
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        - Fixed a lot of doxygen warnings
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     - <b>Testing System</b>
        - Added optional 4th argument to run_single_object_file_mesh_test, which gives a directory with meshes for testing. If given, TEST_FILE argument is ignored.
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        - Increased the testing timeouts a bit (Due to heavy load on the build servers tests got marked as failed but the timeouts where caused by heavy load)
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- <b>OpenFlipper 1.2 ( 2012.03.23 , 14285 )</b>
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     - <b>ACG</b>
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         - DrawMesh
             - Fixed crash with some empty meshes
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         - DrawModes
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             - Reworked dynamic drawMode interface         
             - new draw modes: points_colored / points_colored_shaded
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         - Geometry
             - Fixed aspect ratio function
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             - compute the rotation axis as wellas the rotation angle of two given vectors
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             - Moved bsp tree from OpenFlipper comon to ACG directory
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         - GL
             - Added GLPrimitives class to get rid of glut
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             - Implemented missing read functions for current bound framebuffer. refs #373
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         - Math
             - Added operator* for matrix * scalar multiplication, where each element of the matrix is multiplied with the scalar.
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             - Added column-wise constructor to GLMatrix
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         - SceneGraph
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             - General
                 - Replace usage of gluDisk/Sphere... by the GLPrimitives
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             - CoordsysNode
                 - Rendering fix for colors of coordsys
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             - LineNode
                 - added Vec4f color support and blending for LineNode (in segment mode)
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             - MeshNode
                 - Don't texture edges, halfedges and points in meshnode
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                 - Fixed picking bug, not updating the buffers when switching between any and face picking
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                 - Extra buffer for any picking pass
                 - Bugfix, where mesh was not build yet, but picking needed refs #281
                 - Bugfix for any picking. closes #354
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             - PointNode
                 - Switched to vec4f colors
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             - ShaderNode
                 - Return the available drawmodes based on the set shaders
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             - TranslationManipulatorNode
                 - Make QtTranslationManipulatorNode active per default, since otherwise it is neglected when computing the scene's bounding box
                 - Fixed set_direction for translation manipulator Node
                 - Added functions to disable unused rotation parts of the manipulator
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                 - Corrected colors for translationmanipulatornode. closes #289
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         - QtWidgets
             - Added ColorChooserButton with alpha channel display
             - Use new ColorChooserButton for QtMaterialDialog
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             - Get rid of ugly frame rendering bug in QtBaseViewer
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         - ShaderUtils
             - Uniform setters for Vec2f and Vec4f
             - Uniform setter for float arrays
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             - Geometry Shader support
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         - Utilities
             - Added ACG::ColorGenerator (For generating good reproducable colors)
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             - Halton Color generator
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             - Added colorcoder generating nice colors for a given range of doubles.
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             - Add basic histogram plots with colored bars to ACG
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             - Added a smart pointer header defining a namespace ptr based on the available capabilities
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     - <b>Core</b>
         - General
             - Bugfix for ++ operator in UpdateType
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             - Bugfix: Avoid target counter underflow when copying objects
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             - Bugfix: Missing updateGL causing wrong picking buffers in some special settings
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             - Bugfix: More safety checks on startup to avoid crashes related to window states
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         - Logger
             - Updated widget and removed old workarounds that were required in older qt versions
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         - Rendering
             - Rendermanager/PostprocessorManager bugfix (crash when illegal viewer id -1 was used)
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             - Fixed bug in renderinfo not setting viewer to a renderer mode
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         - Scripting
             - Added help function to print help about different objects (e.g. plugins with help("datacontrol") )
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             - Added script handler logging scripting errors to the console even if they are not run via the script editor
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         - UI
             - Get rid of ugly frame rendering bug in SimpleViewer
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             - Do not reset picking toolbar's position and orientation each time it is shown.
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             - Fixed bug where logger and toolbar where invisible
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             - Modified drawmode context menu to stay open if drawmodes are combined.
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             - Copy and paste view can now also restore the window and toolbox sizes
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         - Help
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             - Open Help browser if what's this links are clicked.
             - Correctly modify treewidget position when a link was clicked.
             - Fixed help browser to correctly find resources in the virtual folder of the last opened document.
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     - <b>Interfaces</b> 
         - General
             - Use const ref for passing strings where possible
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         - BaseInterface 
             - Added Basinterface function to switch renderer
             - Added function to get current renderer
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             - Added slotSceneDrawn. Gets triggered after gl update. (closes #449)
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         - FileInterface
             - Added getAllFileFilters signal to LoadSaveInterface. This signal was documented but in fact never implemented.
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             - Added two convenience functions for list of recent items bookkeeping. (rememberRecentItem,getRecentItems)
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     - <b>ObjectTypes</b>
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         - HexahedralMesh
             - New object type for handling hexahedral meshes with an interface like OpenMesh (OpenVolumeMesh)
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         - PolyMeshObject
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             - Switched color type in meshes from Vec3uc to Vec4f to support alpha per primitive
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         - Skeleton
             - Draw root joint in orange
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             - Fixed non const function hiding draw modes for skeletons
             - Additional PluginFunctions to get skeletons / skeletonObjects by id
             - Add reference information to find a skeleton to a skin
             - Introduced animation iterator
             - insert joint function
             - split joint function
             - rename for animations
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         - SplatCloud
             - Added new splat cloud object type
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         - TriMeshObject
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             - Switched color type in meshes from Vec3uc to Vec4f to support alpha per primitive
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     - <b>Plugins</b>
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         - Backup
             - Small fix for signal flow through backup plugin
         - DataControl
             - Made DataControl scriptable
             - added printObjectInfoToLog function which prints info about all available objects to the log
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             - Implemented scripting function in datacontrol to get number of groups in the scene.
             - Function to get object datatype and stringlist of all available datatypes.
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         - Decimater
             - New decimater with various constraints and feature support
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         - File OBJ
             - Bugfix: Don't try to add information when faces are not added
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             - Bugfix: Prevent crash when trying to add non-manifold vertex configurations.
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             - Bugfix: Loading of mixed objs (splines, surfaces) didn't work correctly
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         - File PLY
             - View all after loading a file to see the scene
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             - Fixed conversion to 4 color components
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         - FileHeightField
             - New simple file plugin loading an image and interpreting it a s a height field.
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         - InfoSkeleton
             - Scripting functions to get information
         - MeanCurvature
             - Scripting functions
         - MeshCompare
             - New plugin to compare two meshes (distance, normal deviation,...)
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         - MeshObjectInfo
             - Corrected and improved genus computation
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             - Display edge length closes #283
             - Enable headless mode for meshinfo plugin
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         - MeshObjectSelections
             - Added functions to convert edge selections to features.
             - Added conversion functions for all types of features (vertices, edges and faces)
             - Store edge selections as vertex pairs since edge ids are not stable (differ depending on the file reader).
             - Also store vertex pairs for halfedge selections instead of direct ids since they're not stable either.
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             - Readded missing function to create a new mesh from a selection.
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         - MeshRepair
             - Added computation of halfedge-normals
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         - Move 
             - Allow modifiying selection when changing the manipulator via its text controls
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         - Primitives Generator 
             - New plugin to generate primitives
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         - PropertyVis
             - New plugin that can visualize various properties on meshes.
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         - Remesher
             - New remesher with adaptive and uniform remeshing 
             - Feature support
         - Render DepthPeling
             - New plugin integrating a dual depth peeling renderer
         - Render SSAO
             - New plugin integrating a screen space ambient occlusion renderer
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         - Scripting
             - Added user flag to enable or disable qtscript debugger
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         - Smoother Plugin
             - Make Smoother scriptable
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         - Subdivider
             - Implement option to keep original vertices at their position
             - New subdivision function, splitting the currently longest edge until a maximal edge length is reached.
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         - Skeletal Animation
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             - OpenMP parallelization
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             - Detach skin from skeleton if mesh is removed from scene.
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             - Bug: Do not deform skin if skin weights are not computed
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         - SkeletonEditing
             - Don't add root joint twice when creating new skeletons
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             - Basic inverse kinematics implementation
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             - When a joint is translated via the Plugin, its parent joint and itself are rotated now, such that their coordinate systems stay constant w.r.t the bone axis. 
             - Automatically switch to depth peeling renderer when editing skeletons
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             - fixed "rotate manipulator"-button doesn't deactivate "transform joint"-button
             - "splitJoint" depends on "splitBone" in "skeletonEditingScritpting.cc"
             - it should not be possible to add/delete/split joints when not in reference pose
             - fix: joint inserted by "splitJoint" will not be deleted, when you click on "addJoint"-Button and then press on another Button
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             - Removed deselection and setting of the currentJoint in "splitJoints"
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         - TexxtureControl
             - Switched to qwt 6
             - Fixed histogram painting
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             - Create backup of original texture coordinates in file plugins not in texturecontrol
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         - VSI
             - Description for remeshing algorithms
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     - <b>Documentation</b>
         - Do not build html index on top of each page for qt-help
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         - Documentation for Backup Interface
         - Documentation for Postprocessor Interface
         - Documentation for Render Interface
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         - Added lots of documentation for plugin programming (with tikz pictures for the flow diagrams)
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         - Added what's this generator class for easier referencing documentation from plugins
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         - Fixed a lot of doxygen warnings
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     - <b>Testing</b>
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         - Integrated testing framework  for file load/save testing
         - Integrated testing generators for algorithms
         - Run unittests of OpenMesh when OpenFlipper tests are run
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         - Added flags to disable OpenFlipper unittest building
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     - <b>Build System</b>
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         - Build with XCode 4.3
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         - Support Visual Studio 2010 and QT 4.8
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         - Added option to allow in source builds (not recommended but it works)
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         - Doxygen, don't warn if undocumented
         - Added Eigen3 finder
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         - Fix problem with fixbundle on mac, where libraries with restrictive permissions did not get fixed properly
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         - Added code style template for eclipse
         - Add option to for windows large memory support (enabled by default)
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         - Default warnings now contain -Wextra
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         - Moved OpenMesh sources to libs_required subfolder
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         - Switched to QWT 6 (and enabled it on mac)
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         - Use one global doxy file to control the generation of the help files for plugins
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         - Fixed bug where debug and release qt versions where copied into MacOS bundle causing crashes.
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         - Fixed install directory of the qt help files
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- <b>OpenFlipper 1.1 ( 2011.09.26  , 12468 )</b>
     - <b>ACG</b>
         - SceneGraph
             - General
                 - Changed all nodes to use the glstate system instead of direct gl calls
             - MaterialNode
                 - Changes to light and material dialog to set alpha channel
             - MeshNode
                 - Fixed bug in per vertex picking buffer(was sometimes empty).
                 - Render faces with normals defined on the mesh(and do not compute them)
             - StatusNode
                 - Implement on demand updates (before everything was updated on a change)
     - <b>Core</b>
         - File handling
             - Fixed load and save bug, where extensions where considered equal if prefix matched
         - General
             - Type iterator introduced to iterate over all currently available types
             - Removed process events calls from snapshots
             - Added threaded writing for video function (higher framerates possible due to less io waiting)
             - Removed the unique naming functions from file plugins (not required, horribly slow)
             - Removed all processEvents from core
             - Large speedup to mesh object updates (due to status node switch for on demand updates)
         - GUI
             - Fixed bug causing a crash when switching between logger modes
             - Reworked log viewer animation and embedding
             - Reworked in scene toolbar integration
             - Fixed bug with transparent frame introduced with QT 4.7.3 onward
             - Added functions to hide status bar ( Ctrl+b , scripting)
             - When going to fullscreen, hide only toolbars that are currently docked
             - Reintroduced checkbox for rendering toolbar outside of scene
             - Added menus to switch between postprocessors and renderers
             - Introduced split viewer layout with two viewers next to each other
             - Set focus on right examiner when a context menu is requested
             - Icons for video capture
         - Load/Save
             - Dont crash when we get a wrong id after adding a new object
             - Fixed bug in recent files menu which sometimes ignored the type
         - Options 
             - Fixed bug where translations could not be switched in the options dialog
             - Added sliders to options widget to support smaller screens
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             - Options Setting for MaxRecent
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