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bug #502: add bool intersects() methods to AlignedBox
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@ -185,6 +185,10 @@ EIGEN_MAKE_ALIGNED_OPERATOR_NEW_IF_VECTORIZABLE_FIXED_SIZE(_Scalar,_AmbientDim)
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inline bool contains(const AlignedBox& b) const
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{ return (m_min.array()<=(b.min)().array()).all() && ((b.max)().array()<=m_max.array()).all(); }
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/** \returns true if the box \a b is intersecting the box \c *this. */
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inline bool intersects(const AlignedBox& b) const
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{ return (m_min.array()<=(b.max)().array()).all() && ((b.min)().array()<=m_max.array()).all(); }
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/** Extends \c *this such that it contains the point \a p and returns a reference to \c *this. */
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template<typename Derived>
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inline AlignedBox& extend(const MatrixBase<Derived>& a_p)
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@ -54,6 +54,13 @@ template<typename BoxType> void alignedbox(const BoxType& _box)
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VERIFY(b2.contains(b1));
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VERIFY_IS_APPROX(b2.clamp(b0), b0);
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// intersection
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BoxType box1(VectorType::Random(dim));
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box1.extend(VectorType::Random(dim));
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BoxType box2(VectorType::Random(dim));
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box2.extend(VectorType::Random(dim));
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VERIFY(box1.intersects(box2) == !box1.intersection(box2).isEmpty());
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// alignment -- make sure there is no memory alignment assertion
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BoxType *bp0 = new BoxType(dim);
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