StratumI.h

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/*  Copyright (C) 2003-2021 Free Electron Organization
    Any use of this software requires a license.  If a valid license
    was not distributed with this file, visit freeelectron.org. */

/** @file */

#ifndef __terrain_StratumI_h__
#define __terrain_StratumI_h__
namespace fe
{
namespace ext
{

/**************************************************************************//**
    @brief Elevation at location

    @ingroup terrain

    TODO a deformable phase, like sand
*//***************************************************************************/
class FE_DL_EXPORT StratumI: virtual public Component
{
    public:
        enum Phase
        {
            e_solid,    // fixed collidable
            e_liquid,   // non-compressible
            e_gas       // compressible gradiant
        };

virtual Phase           getPhase(void) const                                =0;
virtual void            setPhase(Phase phase)                               =0;

virtual Real            getDensity(void) const                              =0;
virtual void            setDensity(Real density)                            =0;

virtual Real            getOffset(void) const                               =0;
virtual void            setOffset(Real offset)                              =0;

virtual Real            getScale(void) const                                =0;
virtual void            setScale(Real scale)                                =0;

virtual void            setTime(Real time)                                  =0;

virtual Real            height(Real x,Real y) const                         =0;
virtual SpatialVector   normal(Real x,Real y) const                         =0;
virtual void            sample(Real startx,Real starty,Real incx,Real incy,
                                U32 vertx,U32 verty,SpatialVector* pVertex,
                                SpatialVector* pNormal)                     =0;
};

} /* namespace ext */
} /* namespace fe */

#endif /* __terrain_StratumI_h__ */