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/*! \page changelog Changelog
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- <b>OpenFlipper 4.0 ( ?/?/? )</b>
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     - <b>Breaking changes</b>
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         - Picking functions use size_t instead of unsigned int now (Required to get rid of a lot of warnings during compilation)    
     - <b>Core</b>
         - Queued cross plugin interconnection feature
         - Use QOpenGLWidget
         - Switched to Qt command line parsing and removed SimpleOpt
     - <b>Plugins</b>
         - Primitives
            - Added Torus
         - SelectionBase
            - added signal and slot to add widgets for selectionParameters to the selectioninterface
         - VSI
            - Fixed picking in Object selection
            - Moved Icon into Plugin
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     - <b>Build System</b>
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         - Improved Branding support
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         - Support for Qt up to 5.9 (Using an lts version 5.9 or 5.6 is recommended)
         - Warn if problematic Qt version is used (5.7 and 5.8 may cause GLErrors on OSX 5.8 overrides moc flags on windows. see https://bugreports.qt.io/browse/QTBUG-58345)
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         - Support for VS 2017
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         - Enable C++-11 by default
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         - Drop support for Qt 4
         - Drop support for QWT 5 
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         - Make sure that resource filenames are unique
         - Split Type plugins into separate builds and remove types from pluginlib
         - Make all plugins submodules and therefore standalone git repositories
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- <b>OpenFlipper 3.1 ( 2016/10/12 )</b>
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     - <b>General</b>
         - Fix missleading indentation warnings on gcc 6.x
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         - Added Tetrahedral mesh support
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     - <b>ACG</b>
        - Use std::vector in BaseNode instead of std::list for performance reasons (closes #61)
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        - Added PrincipalAxisNode (Including shader pipeline support)
        - Fixed shading when shininess is 0
        - Optimizations and cleanup in IRenderer
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        - Added floating subtree node (Can be used to render whole subtrees as overlays)
		- Made constructor of GLMatrixT more flexible.
		- New FloatingSubtreeNode: Enable/disable model view override and overlay mode.
		- MeshCompiler: Fix crash for meshes with large faces. If the input adjacency is faulty, it gets recomputed now.
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     - <b>Core</b>
         - Windows: Attach console to allow output directly to command line
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         - Fixed aspect ratio of screenshot function
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     - <b>Plugins</b>
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         - DataControl
             - Fixed grouping (Not visualized correctly)
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         - HoleFiller
             - Fly to selected holes
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             - Compute boundary information on poly meshes
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         - VTK
             - read tetmeshes from vtk files
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     - <b>Build System</b>
         - Added cmake flag to disable ACG unit tests
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         - Added flag to safeguard a gcc compiler bug (optimizer)
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- <b>OpenFlipper 3.0 ( 2016/07/13 )</b>
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     - <b>LICENSE</b>
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        - Switched to BSD-3 License
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     - <b>ACG</b>
        - MeshCompiler and DrawMesh
	     - check surface type of meshcompiler input
             - fix solid vertex colored drawmodes 
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             - support face colors + smooth shading refs (#2387)
             - fix properties of DrawMode solid faces colored
             - add drawmode face colors + halfedge texcoords + smooth lighting
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             - increase max supported face size closes #2522
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             - Improved performance
             - New polygon-> triangle code
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        - Geometry
             - add fast algorithms for bspline basis function to ACG
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             - Added more stable dist_point triangle Algorithm Version           
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        - GL
             - implicitly bind vbo on upload()
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             - fix shaders for resolving multisampled textures
             - improve Post-Processor interface: request texture format, IO bind() helper funcs, multiviewport
             - dynamic shaders now support preprocessor macros
             - get rid of gluPickMatrix call and avoid using big array on stack
             - replace gluNurbs rendering with own implementation refs #2429 
        - Meminfo
             - New classes to get memory information (RAMInfo class)
        - Nodes
             - Fixing rendering behavior of StatusNodes so they can be used in a standalone fashion.
             - Disable use of custom GL blend functions in LineNode.
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        - Shader Generator
             - Added Texture coordinate generation
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             - Added DepthStencil FBO handling
             - New Query Object
             - Depth Range Render Object
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     - <b>Core</b>
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        - BaseObject
             - Make the object update functions protected (You have to use emit updatedObject instead)
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        - IO
             - Emit warning in save object function, if object can't be retrieved
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             - Async loaders to keep ui alive while loading
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        - ProcessManager:
             - fix: possible crash with multiple processes (row variable wasn't updated, if the job widget row was changed)
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        - QtBaseViewer
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             - assumption that the drawbuffer is ailways GL_BACK might be problematic (refs #2361)
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        - Picking
             - Added interfaces and functions for refine picking functionality (Can be used to implement exact picking after colorpicking)
             - Added functions to retrieve viewing rays for raycasting from examiner widgets
        - Screenshots
             - fix screenshot buffer creation (fixes screenshot with multiple instances of OF)
             - fix alpha channel of snapshots refs #2506
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     - <b>Interfaces</b>
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        - Base Interface 
             - Added signals slot to block scenegraph updates (Enables blocking through the event queue to keep the order fixed)
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        - Process Interface
             - Fixed memory leak
             - Process Manager: removed redudant code/speed up
             - OpenFlipperThread: added jobid getter
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        - Metadata Interface
             - Added new meta data interface (CVan be used to store additional metadata along with screenschots)
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        - Pluginfunctions
             - Added C++11 range adapter for ObjectIterator
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     - <b>UI</b>
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        - Updated Toolbox layouts
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        - AboutWidget
             - set OpenFlipper System Information Tab read-only
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        - Optionswidget
             - add option for max backups
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             - added option to always set new objects to target
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        - Snapshots
             - The viewer snapshot dialog now automatically suggests file names that don't exist yet. If names of existing files are entered, a warning is displayed in real time. If non-writable paths are entered, a warning is displayed as well.
             - New feature: Copy view as C-style string. Holding Ctrl while clicking the "Copy View" context menu action now copies a C-style string to the clipboard.
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             - Added fully scriptable snapshot function
        - CoreWidget
             - Correctly restore window sizes after restart
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     - <b>License Manager</b>
        - Remove function pointers which produce errors in C++11
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        - Improved handling of time constraints for License management
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     - <b>Documentation</b>
        - More scripting documentation
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        - OpenFlipperThread: Add more information about reimplementing the interface
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        - added some datatype docs
        - added examples for gathering object ids via script
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     - <b>ObjectTypes</b>
        - Added PolyLine colored segment rendering
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        - PolyLine fixes (performance, rendering bug for segments)
        - PolyLine: improved picking via shader
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        - MeshObject: Added hasBSP function
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     - <b>Plugins</b>
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         - Align Meshes 
             - New plugin which can be used to align meshes 
             - Requires Eigen3 to compute PCA
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         - Backup
             - Added Optionswidget for max backups
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             - Added missing restore signal for ui buttons (refs #2407)
             - fixes problem with textures after undo operation (refs #2407)
             - update re/undo buttons after clear all
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             - create correct object on poly/tri mesh copy
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         - Datacontrol
             - Some null pointer checks to avoid a crash
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             - Smaller layout to redduce amount of wasted space
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         - Decimater
             - Added process interface to decimater and using the observer pattern for progress bar
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             - gui-only slots declared as private slots
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         - FileHeightField
             - Import the color of the image that is loaded as a height field as vertex colors
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         - FileOBJ
             - fix crash when file contains NaN or Inf (closes #2401)
             - More warnings on defect files
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             - fix crash when file contains degenerated faces (refs #2382)
             - Fix: Dont write texture coordinates if writing them is disabled
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             - Loader: Significant speedup
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         - FileOM
             - Respect save settings dialog for polymeshes
             - release texture coordinate properties if not found in file
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         - InfoMeshObject
             - Fix target count display on updates. closes #2443
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         - IsotropicRemesher
             - nogui / batch mode support (closes #2384)
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         - MeshObjectInfo
             - Added vertex and valence histograms
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         - MemInfo
             - Fixed wrong visualization on Linux
             - Added Mac support
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         - Move 
             - Make mesh normalization slots scriptable
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         - PrimitiveGenerator
             - add initial backups for each generated primitive (refs #2407)
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         - PropertyVis
             - force static property casts in property visualizer due to failing dynamic cast caused be different typeids over different shared objects on mac
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             - Enable uint8_t support
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         - Remesher
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             - add nogui support (closes #2384)
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         - Selection
             - add options for selection/handle/feature/area color for Poly/Triangle Meshes
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         - TextureControl
             - image storage checks last modification of a texture and reloads it again if necessary closes #2381
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     - <b>Build System</b>
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         - Optional static linking of plugins into core (for debugging)
         - Sort plugin configuration
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         - Catching of SIGSEGV can now be controlled through CMake flag.
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         - CMake flag for enabled debug console  on windows in release mode
         - Make OpenVolumeMesh non mandatory for build
         - fix install path on 64-bit windows with 64-bit installer
         - Removed unneccessary ftgl
         - Removed various istream includes
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         - The libs dir for searching windows libraries is now configurable via cmake
         - Allow to build plugins statically into core
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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