UniformTSDFVolume.h

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#pragma once

#include <Open3D/Integration/TSDFVolume.h>

namespace open3d {
namespace integration {

class UniformTSDFVolume : public TSDFVolume {
public:
    UniformTSDFVolume(double length,
                      int resolution,
                      double sdf_trunc,
                      TSDFVolumeColorType color_type,
                      const Eigen::Vector3d &origin = Eigen::Vector3d::Zero());
    ~UniformTSDFVolume() override;

public:
    void Reset() override;
    void Integrate(const geometry::RGBDImage &image,
                   const camera::PinholeCameraIntrinsic &intrinsic,
                   const Eigen::Matrix4d &extrinsic) override;
    std::shared_ptr<geometry::PointCloud> ExtractPointCloud() override;
    std::shared_ptr<geometry::TriangleMesh> ExtractTriangleMesh() override;

    std::shared_ptr<geometry::PointCloud> ExtractVoxelPointCloud();

    void IntegrateWithDepthToCameraDistanceMultiplier(
            const geometry::RGBDImage &image,
            const camera::PinholeCameraIntrinsic &intrinsic,
            const Eigen::Matrix4d &extrinsic,
            const geometry::Image &depth_to_camera_distance_multiplier);

    inline int IndexOf(int x, int y, int z) const {
        return x * resolution_ * resolution_ + y * resolution_ + z;
    }

    inline int IndexOf(const Eigen::Vector3i &xyz) const {
        return IndexOf(xyz(0), xyz(1), xyz(2));
    }

public:
    Eigen::Vector3d origin_;
    double length_;
    int resolution_;
    int voxel_num_;
    std::vector<float> tsdf_;
    std::vector<Eigen::Vector3f> color_;
    std::vector<float> weight_;

private:
    Eigen::Vector3d GetNormalAt(const Eigen::Vector3d &p);

    double GetTSDFAt(const Eigen::Vector3d &p);
};

}  // namespace integration
}  // namespace open3d