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# csutil/sparse3d.h

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    00001 /*
    00002     Sparse 3-D matrix.
    00003     Copyright (C) 1998-2001 by Jorrit Tyberghein
    00004
    00005     This library is free software; you can redistribute it and/or
    00006     modify it under the terms of the GNU Library General Public
    00007     License as published by the Free Software Foundation; either
    00008     version 2 of the License, or (at your option) any later version.
    00009
    00010     This library is distributed in the hope that it will be useful,
    00011     but WITHOUT ANY WARRANTY; without even the implied warranty of
    00012     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    00013     Library General Public License for more details.
    00014
    00015     You should have received a copy of the GNU Library General Public
    00016     License along with this library; if not, write to the Free
    00017     Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
    00018 */
    00019
    00020 #ifndef __CS_SPARSE3D_H__
    00021 #define __CS_SPARSE3D_H__
    00022
    00027 #include "csextern.h"
    00028
    00033 class CS_CRYSTALSPACE_EXPORT csSparse3D
    00034 {
    00035 public:
    00037   csSparse3D () { }
    00039   virtual ~csSparse3D () { }
    00040
    00042   virtual void Clear () = 0;
    00043
    00045   virtual void Set (int x, int y, int z, void* obj) = 0;
    00046
    00048   virtual void* Get (int x, int y, int z) = 0;
    00049
    00051   virtual void Del (int x, int y, int z) = 0;
    00052 };
    00053
    00067 class CS_CRYSTALSPACE_EXPORT csWideSparse3D : public csSparse3D
    00068 {
    00069 private:
    00071   struct SparseCell
    00072   {
    00073     int z;
    00074     void* obj;
    00075     SparseCell* next, * prev;
    00076   };
    00078   struct HdY
    00079   {
    00080     HdY () { first_z = 0; }
    00081     int y;
    00082     HdY* next, * prev;
    00083     SparseCell* first_z;
    00084   };
    00086   struct HdX
    00087   {
    00088     HdX () { first_y = 0; }
    00089     int x;
    00090     HdX* next, * prev;
    00091     HdY* first_y;
    00092   };
    00093
    00095   HdX* first_x;
    00097   HdX* get_header_x (int x);
    00099   HdY* get_header_y (HdX* y_list, int y);
    00101   SparseCell* get_cell_z (HdY* z_list, int z);
    00102
    00103 public:
    00105   csWideSparse3D ();
    00107   virtual ~csWideSparse3D ();
    00108
    00110   virtual void Clear ();
    00111
    00113   virtual void Set (int x, int y, int z, void* obj);
    00114
    00116   virtual void* Get (int x, int y, int z);
    00117
    00119   virtual void Del (int x, int y, int z);
    00120 };
    00121
    00122 #endif // __CS_SPARSE3D_H__