NAME

       level_set - compute a level set from a function

SYNOPSYS

       geo level_set (const field& fh);

DESCRIPTION

       Given  a  function  fh  defined in a domain Lambda, compute the level set defined by {x in
       Lambda, fh(x) = 0}.  This level set is represented by the geo class.

OPTIONS

       The option class leve_set_option_type controls the slit of quadrilaterals  into  triangles
       for tridimensional intersected surface and also the zero machine precision, epsilon.

IMPLEMENTATION

       struct level_set_option_type {
           bool split_to_triangle;
           Float epsilon;
           level_set_option_type()
            : split_to_triangle(true),
              epsilon(100*std::numeric_limits<Float>::epsilon())
              {}
       };
       template <class T, class M>
       geo_basic<T,M> level_set (
         const field_basic<T,M>& fh,
         const level_set_option_type& opt = level_set_option_type());