#pragma once
#include "vde/core/point.h"
#include "vde/core/line.h"
#include "vde/core/triangle.h"
#include <optional>

namespace vde::collision {

struct RayTriResult {
    double t;      // parameter along ray
    double u, v;   // barycentric
    Point3D point;
};

/// Möller–Trumbore ray-triangle intersection
std::optional<RayTriResult> ray_triangle_intersect(
    const Point3D& origin, const Vector3D& dir, const Triangle3D& tri);

inline std::optional<RayTriResult> ray_triangle_intersect(
    const Ray3Dd& ray, const Triangle3D& tri) {
    return ray_triangle_intersect(ray.origin(), ray.direction(), tri);
}

}  // namespace vde::collision