ViewDesignEngine/include/vde/collision/tri_intersect.h

#pragma once
#include "vde/core/triangle.h"
#include "vde/core/aabb.h"

namespace vde::collision {
using core::Triangle3D;
using core::AABB3D;
using core::Point3D;

// Separating-axis test for two triangles
bool tri_tri_intersect(const Triangle3D& t1, const Triangle3D& t2);

// Detailed tri-tri intersection — returns the intersection segment
struct TriTriIntersection {
    bool intersects;
    Point3D p0, p1;
};
TriTriIntersection tri_tri_intersect_detailed(const Triangle3D& t1,
                                              const Triangle3D& t2);

// Fast SAT test: triangle vs AABB (13 separating axes)
bool tri_aabb_overlap(const Triangle3D& tri, const AABB3D& box);

}  // namespace vde::collision