PointOctree.h

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/*
 *
 * The Blue Brain BioExplorer is a tool for scientists to extract and analyse
 * scientific data from visualization
 *
 * This file is part of Blue Brain BioExplorer <https://github.com/BlueBrain/BioExplorer>
 *
 * Copyright 2020-2024 Blue BrainProject / EPFL
 *
 * 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 <https://www.gnu.org/licenses/>.
 */
 
#pragma once
 
#include <platform/core/common/Types.h>
 
#include "PointOctreeNode.h"
 
namespace core
{
class PointOctree
{
public:
    PointOctree(const OctreePoints &points, double voxelSize, const Vector3f &minAABB, const Vector3f &maxAABB);
 
    ~PointOctree();
 
    const Vector3ui &getVolumeDimensions() const { return _volumeDimensions; }
 
    uint32_t getVolumeSize() const { return _volumeSize; }
 
    uint32_t getOctreeSize() const { return _octreeSize; }
 
    uint32_t getOctreeDepth() const { return _depth; }
 
    const uint32_ts &getFlatIndices() const { return _flatIndices; }
 
    const floats &getFlatData() const { return _flatData; }
 
private:
    void _flattenChildren(PointOctreeNode *node, uint32_t level);
 
    inline uint32_t _pow2roundup(uint32_t x)
    {
        --x;
        x |= x >> 1;
        x |= x >> 2;
        x |= x >> 4;
        x |= x >> 8;
        x |= x >> 16;
        return x + 1;
    }
 
    Vector3ui _volumeDimensions;
    uint32_t _volumeSize;
    uint32_t _octreeSize;
    uint32_t _depth;
 
    uint32_ts _offsetPerLevel;
 
    uint32_ts _flatIndices;
    floats _flatData;
};
} // namespace core