Method isLineIntersect

core/math/Vec2.cpp:238–260

}

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

    const float denom = crossProduct2Vector(A, B, C, D);

    if (denom == 0)
    {
        // Lines parallel or overlap
        return false;
    }

    if (S != nullptr)
        *S = crossProduct2Vector(C, D, C, A) / denom;
    if (T != nullptr)
        *T = crossProduct2Vector(A, B, C, A) / denom;

    return true;
}

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