Method isLineParallel

core/math/Vec2.cpp:262–282

}

bool Vec2::isLineParallel(const Vec2& A, const Vec2& B, const Vec2& C, const Vec2& D)
{
    // FAIL: Line undefined
    if ((A.x == B.x && A.y == B.y) || (C.x == D.x && C.y == D.y))
    {
        return false;
    }

    if (crossProduct2Vector(A, B, C, D) == 0)
    {
        // line overlap
        if (crossProduct2Vector(C, D, C, A) == 0 || crossProduct2Vector(A, B, C, A) == 0)
        {
            return false;
        }

        return true;
    }

    return false;
}

bool Vec2::isLineOverlap(const Vec2& A, const Vec2& B, const Vec2& C, const Vec2& D)
{