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camvox/VoxTree.h

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/* VoxTree.h - Management of all octtree voxel nodes.
 * Copyright (C) 2008  Take Vos
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
#ifndef VOXTREE_H
#define VOXTREE_H

#include <camvox/Voxel.h>
#include <camvox/VoxOperation.h>
#include <camvox/VoxCoord.h>
#include <camvox/CSGObject.h>
#include <camvox/FreeList.h>

namespace camvox {

typedef struct {
        Voxel   voxels[8];
} vox_node_t;

class VoxTree {
private:
        FreeList        free_list;
        uint32_t        nodes_size;
        vox_node_t      *nodes;
        uint32_t        root;
        double          size;           
        double          scale;          

        uint32_t alloc(void);

        void free(uint32_t node_nr);

        void checkSize(void);

        Voxel pruneVoxel(uint32_t node_nr, const VoxCoord &coord, int voxel_index);

        Voxel pruneNode(uint32_t node_nr, const VoxCoord &coord);

        Voxel addCSGObjectToVoxel(uint32_t node_nr, const VoxCoord &coord, int voxel_index, const CSGObject *obj, VoxOperation &csg_op);

        Voxel addCSGObjectToNode(uint32_t node_nr, const VoxCoord &coord, const CSGObject *obj, VoxOperation &csg_op);

        void generatePOVCodeForVoxel(uint32_t node_nr, const VoxCoord &coord, int voxel_index);

        void generatePOVCodeForNode(uint32_t node_nr, const VoxCoord &coord);

public:
        uint64_t        nr_nodes_created;       
        uint64_t        nr_nodes_destroyed;     

        VoxTree(double _size);
        ~VoxTree(void);

        void generatePOVCode(void);

        void addCSGObject(const CSGObject *obj, VoxOperation &csg_op);

        void prune(void);
};

}

#endif