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/*! \page changelog Changelog
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- <b>OpenFlipper 2.1 ( ?/?/? , 18744 )</b>
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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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	- 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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        - 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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	- 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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	- 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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        - 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.            
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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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     - <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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         - 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-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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         - MemInfo
             - Added better measurement of free memory for Linux platforms.
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         - Move
             - no crash, if the manipulator is sized too small
         - 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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         - 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>
         - 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
             - 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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     - <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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