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@@ -190,6 +190,57 @@ To get started, we advise that you take a look at a few examples:
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./examples/ReAntTweakBar/
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+## Extras ##
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+Libigl compartmentalizes dependences via its organization into a _main_ libigl
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+library and "extras."
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+
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+
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+### bbw ###
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+This library extra contains functions for computing Bounded Biharmonic Weights, can
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+be used with and without the [mosek](#mosek) extra via the `IGL_NO_MOSEK`
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+macro.
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+
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+### boost ###
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+This library extra utilizes the graph functions in the boost library for find
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+connected components and performing breadth-first traversals.
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+
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+### cgal ###
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+This library extra utilizes CGAL's efficient and exact intersection and
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+proximity queries.
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+
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+### embree ###
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+This library extra utilizes embree's efficient ray tracing queries.
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+
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+### matlab ###
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+This library extra provides support for reading and writing `.mat` workspace
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+files, interfacing with Matlab at run time and compiling mex functions.
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+
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+### mosek ###
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+This library extra utilizes mosek's efficient interior-point solver for
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+quadratic programs.
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+
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+### png ###
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+This library extra uses `libpng` and `YImage` to read and write `.png` files.
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+
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+### svd3x3 ###
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+This library extra implements "as-rigid-as-possible" (ARAP) deformation
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+techniques using the fast singular value decomposition routines
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+written specifically for 3x3 matrices to use `SSE` intrinsics. This extra can
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+still be compiled without sse support and support should be determined
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+automatically at compile time via the `__SSE__` macro.
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+
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+### tetgen ###
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+This library extra provides a simplified wrapper to the tetgen 3d tetrahedral meshing
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+library.
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+
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+### viewer ###
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+This library extra utilizes glfw and glew to open an opengl context and launch
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+a simple mesh viewer.
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+
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+### xml ###
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+This library extra utilizes tinyxml2 to read and write serialized classes
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+containing Eigen matrices and other standard simple data-structures.
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+
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## Development ##
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Further documentation for developers is listed in tutorial.html,
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style_guidelines.html
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Alec Jacobson