Refactor intersects_cb
Split detail/intersects into intersects / intersection / GeometrySet
Add a GeometrySet class, and Box_d{h,cpp} files
Add linestring,polygon and polygon,polygon to intersects test
intersects() is implemented through GeometrySet (still has to complete for solids)
wip
Move intersects back from detail/
Remove back intersection from detail/
Move TriangulatedSurface::toPolyhedron_3<K> to .cpp
Fix triangulation of polyhedron
Fix covers
Wip : typedef MarkedPolyhedron, added collect points, complete recompose
Fix intersection3D(solid, surface)
Fix intersection3d(solid, solid)
prepare Grid and ASC format reader
add test and fix grid and ASCTest
Grid::PixelType => SFCGAL::PixelConvention
add unit test
Add basic covers test
add ASC to OSG example