StratumWave.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_StratumWave_h__
#define __terrain_StratumWave_h__
namespace fe
{
namespace ext
{

#define WAVE_SAMPLES        100 //* reusable space vs new()

/**************************************************************************//**
    @brief Elevation using waves

    @ingroup terrain
*//***************************************************************************/
class FE_DL_EXPORT StratumWave: public StratumPlane
{
    public:
                        StratumWave(void)                                   {}
virtual                 ~StratumWave(void)                                  {}

                        //* As StratumI
virtual Real            height(Real x,Real y) const;
virtual SpatialVector   normal(Real x,Real y) const;

virtual void            sample(Real startx,Real starty,Real incx,Real incy,
                                U32 vertx,U32 verty,
                                SpatialVector* pVertex,SpatialVector* pNormal);
    private:
        Real        m_sinxBuffer[WAVE_SAMPLES];
        Real        m_sinyBuffer[WAVE_SAMPLES];
        Real        m_cosxBuffer[WAVE_SAMPLES];
        Real        m_cosyBuffer[WAVE_SAMPLES];
};

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

#endif /* __terrain_StratumWave_h__ */