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62 lines
2.8 KiB
62 lines
2.8 KiB
#pragma once
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#include <base/subface.hpp>
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#include <container/stl_alias.hpp>
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#include "flat_index_group.hpp"
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namespace internal
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{
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// 每个活动子面应具有以下结构
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struct parametric_plane {
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stl_vector_mp<Eigen::Vector2d> chain_vertices{}; // 链顶点
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flat_index_group chains{}; // 链组
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stl_vector_mp<uint32_t> singularity_vertices{}; // 奇异顶点，即链的交点
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stl_vector_mp<uint32_t> polar_vertices{}; // 极性顶点，即两个连接顶点周围的最小/最大 x/y
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stl_vector_mp<uint32_t> parallel_start_vertices{}; // 平行起始顶点，即边 {v, v + 1} 平行于 x/y 轴
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};
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class SurfaceAreaCalculator
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{
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public:
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// 构造函数，接受对 subface 的引用
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explicit SurfaceAreaCalculator(const subface& surface);
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[[deprecated("Use calculate_new() instead")]] SurfaceAreaCalculator(const subface& surface,
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const stl_vector_mp<double>& u_breaks,
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double umin,
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double umax,
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double vmin,
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double vmax);
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SurfaceAreaCalculator(const subface& surface, const parametric_plane& uv_plane);
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// 设置 u_breaks（裁剪/分割线）
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void set_ubreaks(const stl_vector_mp<double>& u_breaks);
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// 计算面积主函数
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template <typename Func>
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double calculate(Func&& func, int gauss_order = 3) const;
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private:
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const subface& m_surface; // 引用原始曲面
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stl_vector_mp<double> m_u_breaks; // 分割线信息（可选）
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parametric_plane m_uv_plane;
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double Umin = 0.0; // 参数域范围
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double Umax = 1.0;
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double Vmin = 0.0;
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double Vmax = 1.0;
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// 私有辅助函数
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// 直线u=u_val与边界的交点
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std::vector<double> find_vertical_intersections(double u_val);
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bool is_point_inside_domain(double u, double v);
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double newton_method(const std::function<equation_intermediate_t(double)>& F,
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double v_initial,
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double tolerance = 1e-8,
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int max_iterations = 100);
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void sort_and_unique_with_tol(std::vector<double>& vec, double epsilon = 1e-8);
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};
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} // namespace internal
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