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I'm hoping to make use of CGAL in an iOS / iPad app. I'm a reasonably experienced iOS developer, but I haven't ever tried including a C++ library such as this one, and I haven't actually used CGAL before. Extensive research has shown it to be the best option for me (I need a free/open source license and a wide range of 2D geometry methods, including tangent/normal vectors at arbitrary points on a bezier, bezier offset, bezier intersection, etc. I'm particularly drawn to CGAL's "arrangements" which let you do boolean operations with closed spaces, though that feature is not a make-or-break feature). I am open to other alternatives, but I have looked into dozens of libraries to arrive at this one -- I'd prefer this discussion to be about CGAL than other suggestions, unless you have a particularly compelling reason to suggest another direction.
Ideally, I'm hoping someone can give me some step-by-step guidance on how to get to the "hello world" of CGAL in iOS.... generating a line between two points, perhaps. I don't need CGAL to do the rendering for me, but I'd also be open to suggestions from anyone who has attempted similar combinations of elements before. I'm using a current version of Xcode, and would like to stick with LLVM compiling (which CGAL in theory now supports).
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The file CGALConfig.cmake is installed by default in $CMAKE_INSTALLED_PREFIX/lib/cmake/CGAL. Similarly to CGAL and its libraries, compiling a program using CGAL is done in the usual two steps of configuration and building. The configuration process is also done using cmake (or cmake-gui) and requires a CMakeLists.txt file.
SourceForge is not affiliated with CGAL. For more information, see the SourceForge Open Source Mirror Directory . CGAL or the Computational Geometry Algorithms Library is a C++ library that gives you easy access to a myriad of efficient and reliable geometric algorithms.
By default, these are not configured along with the CGAL libraries, unless you set the variables WITH_examples=ON and/or WITH_demos=ON. Additionally, even when configured with CGAL, they are not automatically built along with the libraries.
During configuration of the CGAL libraries a file named CGALConfig.cmake is generated in CGAL's root directory (in contrast to CGAL's source directory that has been used for installation).
CGAL does support Apple llvm/clang, but only on MacOS X, so far. The reason is that the internals of the CGAL kernel need a special support for the Floating Point Unit. That support was never tried so far for CPUs running iOS.
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