face_geom.hpp

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// core — FaceGeom: the static (sub)face geometry CSR of the collocated AMR projection.
//
// Factored out of flow.hpp into its own header so the device face-geometry assembler
// (facegeom_assembly.hpp) and the flow driver (flow.hpp) can both name the type without a
// circular include (flow.hpp consumes the assembler, the assembler produces a FaceGeom).
//
// Per (sub)face (matching AmrPoisson::forEachFaceFull, 2:1 sub-faces): neighbour, axis, dir, α·area
// (divergence weight), raw area (advection flux), face-normal distance, openness α (gradient gate),
// and the two SOU upstream-probe leaves. Per cell: 1/V and a fluid flag.
//
// Requires a Kokkos build (View).
#ifndef PECLET_CORE_AMR_FACE_GEOM_HPP
#define PECLET_CORE_AMR_FACE_GEOM_HPP
 
#include "peclet/core/common/types.hpp"
#include "peclet/core/common/view.hpp"
 
namespace peclet::core::amr {
 
struct FaceGeom {
  View<Index> start;       
  View<Index> nbr;         
  View<int> axis;          
  View<int> dir;           
  View<double> alphaArea;  
  View<double> rawArea;    
  View<double> dist;       
  View<double> alpha;      
  View<Index> upupI;  
  View<Index> upupJ;  
  View<double> invVol;  
  View<char> fluid;     
  Index n = 0;
};
 
}  // namespace peclet::core::amr
 
#endif  // PECLET_CORE_AMR_FACE_GEOM_HPP