Open3D(C++) 可视化(2)——绘制几何图形

1、绘制箭头

主要函数

/// Factory function to create an arrow mesh (TriangleMeshFactory.cpp)
    /// The axis of the cone with cone_radius will be along the z-axis.
    /// The cylinder with cylinder_radius is from
    /// (0, 0, 0) to (0, 0, cylinder_height), and