Throw a better exception from VTK::getEntityDimension

#pragma once

#include <stdexcept>

#include <string>

#include <cstdint>

      case EntityShape::Wedge:          return 3;

      case EntityShape::Pyramid:        return 3;

   }

   // this just avoids a compiler warning in GCC and nvcc (clang actually knows if the

   // switch above covers all cases, and print a warning only when it does not)

   throw 1;

   // this can actually happen when an invalid uint8_t value is converted to EntityShape

   throw std::runtime_error( "VTK::getEntityDimension: invalid entity shape value " + std::to_string(int(shape)) );

}

// static mapping of TNL entity topologies to EntityShape