DynamicHeightMap.h

 // DynamicHeightMap.h: interface for the CDynamicHeightMap class.
 //
 
 #if !defined(AFX_DYNAMICHEIGHTMAP_H__5A5BD0B8_1FC7_4067_A5A4_D40422E8B6D1__INCLUDED_)
 #define AFX_DYNAMICHEIGHTMAP_H__5A5BD0B8_1FC7_4067_A5A4_D40422E8B6D1__INCLUDED_
 #pragma once
 
 const int   dhm_line        = 4;
 const int   dhm_matrix      = (dhm_line+1+dhm_line);    // 9x9 array
 const float dhm_size        = 4.f;                      // 4m per slot
 const int   dhm_precision   = 16;                       // 32x32 subdivs per slot
 const int   dhm_total       = dhm_matrix*dhm_matrix;
 
 //
 class CHM_Static
 {
     struct  Slot
     {
         float       data    [dhm_precision][dhm_precision];
         
         BOOL        bReady;
         int         x,z;
         
         IC          void        set     (int _x, int _z)    { x=_x; z=_z; }
         IC          void        clear   ()
         {
             for (u32 i=0; i<dhm_precision; ++i)
                 for (u32 j=0; j<dhm_precision; ++j)
                     data    [i][j]  = flt_min;
         }
         Slot()
         {
             clear   ();
             set     (0,0);
             bReady  = TRUE;
         }
     };
     struct Poly
     {
         Fvector     v[3];
     };
 
     Slot                        pool    [dhm_matrix*dhm_matrix];            // pool 
     Slot*                       data    [dhm_matrix][dhm_matrix];           // database
     int                         c_x,c_z;                                    // center of heighmap
     svector<Slot*,dhm_total>    task;
     xr_vector<Poly>             polys;
 public: 
     void                        Update      ();
     float                       Query       (float x, float z);             // 2D query
     
     CHM_Static                  ();
 };
 
 //
 class CHM_Dynamic
 {
 public:
     void                        Update      ();
     float                       Query       (float x, float z);             // 2D query
 };
 
 //
 class CHeightMap
 {
     CHM_Static                  hm_static;
     CHM_Dynamic                 hm_dynamic;
     u32                     dwFrame;
 public:
     float                       Query       (float x, float z);             // 2D query
     Fvector                     Query       (Fvector& pos, Fvector& dir);   // 3D ray-query
 };
 
 #endif // !defined(AFX_DYNAMICHEIGHTMAP_H__5A5BD0B8_1FC7_4067_A5A4_D40422E8B6D1__INCLUDED_)