#pragma once
#include <cmath>

struct PointF {
public:
    float x, y, z;
    static const float epsilon;

    PointF() : x(0), y(0), z(0) {}
    PointF(float px, float py, float pz) : x(px), y(py), z(pz) {}

    PointF operator+(const PointF& other) const {
        return PointF(x + other.x, y + other.y, z + other.z);
    }

    PointF operator-(const PointF& other) const {
        return PointF(x - other.x, y - other.y, z - other.z);
    }

    PointF operator-() const {
        return PointF(-x, -y, -z);
    }

    PointF operator*(float scalar) const {
        return PointF(x * scalar, y * scalar, z * scalar);
    }

    PointF operator/(float scalar) const {
        if (std::abs(scalar) < epsilon) PointF(x,y,z);
        return PointF(x / scalar, y / scalar, z / scalar);
    }

    float dot(const PointF& other) const {
        return x * other.x + y * other.y + z * other.z;
    }

    PointF cross(const PointF& other) const {
        return PointF(
            y * other.z - z * other.y,
            z * other.x - x * other.z,
            x * other.y - y * other.x
        );
    }

    float distanceTo(const PointF& other) const {
        return std::sqrt((x - other.x) * (x - other.x) +
            (y - other.y) * (y - other.y) +
            (z - other.z) * (z - other.z));
    }

    bool operator==(const PointF& other) const {
        return std::abs(x - other.x) < epsilon &&
            std::abs(y - other.y) < epsilon &&
            std::abs(z - other.z) < epsilon;
    }

    bool operator<(const PointF& other) const {
        if (std::abs(x - other.x) >= epsilon) return x < other.x;
        if (std::abs(y - other.y) >= epsilon) return y < other.y;
        return z < other.z;
    }
};

// const float PointF::epsilon = 1e-6f;

struct IniInPutStruct {
    PointF vertex1; // 点1坐标
    PointF vertex2; // 点2坐标
    PointF vertex3; // 点3坐标
    int index1;    // 点1索引
    int index2;    // 点2索引
    int index3;    // 点3索引
    PointF normal;  // 面法向
};

struct FinOutPutStruct {
    PointF start_p; // 起点坐标
    PointF end_p;   // 终点坐标
    PointF start_v; // 起点法线
    PointF end_v;   // 终点法线
    int type;      // 类型
};