PeanoCurve.h

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// This file is part of the Peano project. For conditions of distribution and
// use, please see the copyright notice at www.peano-framework.org
#pragma once
 
 
#include "peano4/utils/Loop.h"
 
 
namespace peano4 {
  namespace grid {
    class PeanoCurve;
    struct AutomatonState;
  }
}
 
 
class peano4::grid::PeanoCurve {
  public:
    static constexpr int CallStack = 0;
 
    static constexpr int NumberOfBaseStacks = 3;
 
    static constexpr int NumberOfPeriodicBoundaryConditionStacks = 2*(ThreePowerD-1);
 
    static constexpr int MaxNumberOfCoreStacksPerSpacetreeInstance = NumberOfBaseStacks + Dimensions*2 + NumberOfPeriodicBoundaryConditionStacks;
 
    static bool isTraversePositiveAlongAxis(
      const AutomatonState&  state,
      int                    axis
    );
 
    static peano4::utils::LoopDirection getLoopDirection(
      const AutomatonState&  state
    );
 
    static void setExitFace(AutomatonState& cell, int axis);
    static void setEntryFace(AutomatonState& cell, int axis);
    static void invertEvenFlag(AutomatonState& cell, int axis);
    static void removeFaceAccessNumber(AutomatonState& cell, int face);
    static void setFaceAccessNumber(AutomatonState& cell, int face, int value);
 
    static std::bitset<Dimensions> getFirstVertexIndex( const AutomatonState& cell );
 
    static int getVertexReadStackNumber(const AutomatonState& state, const std::bitset<Dimensions>& vertex );
 
    static int getVertexWriteStackNumber(const AutomatonState& state, const std::bitset<Dimensions>& vertex );
 
    static int getFaceNumberAlongCurve(const AutomatonState& state, int logicalFaceNumber );
 
    static int getFaceReadStackNumber(const AutomatonState& state, int face );
    static int getFaceWriteStackNumber(const AutomatonState& state, int face );
 
    static int getCellReadStackNumber(const AutomatonState& state);
    static int getCellWriteStackNumber(const AutomatonState& state);
 
    static bool isInOutStack( int number );
    static bool isTemporaryStack( int number );
 
    static int getInputStackNumber(const AutomatonState& state);
    static int getOutputStackNumber(const AutomatonState& state);
};