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bug #502: add bool intersects() methods to AlignedBox

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This commit is contained in:
Sven Strothoff 2013-07-28 23:59:37 +02:00
parent 2437215221
commit 5f11db695b
2 changed files with 11 additions and 0 deletions
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4
Eigen/src/Geometry/AlignedBox.h
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@ -185,6 +185,10 @@ EIGEN_MAKE_ALIGNED_OPERATOR_NEW_IF_VECTORIZABLE_FIXED_SIZE(_Scalar,_AmbientDim)
inline bool contains(const AlignedBox& b) const inline bool contains(const AlignedBox& b) const
{ return (m_min.array()<=(b.min)().array()).all() && ((b.max)().array()<=m_max.array()).all(); } { return (m_min.array()<=(b.min)().array()).all() && ((b.max)().array()<=m_max.array()).all(); }
/** \returns true if the box \a b is intersecting the box \c *this. */
inline bool intersects(const AlignedBox& b) const
{ return (m_min.array()<=(b.max)().array()).all() && ((b.min)().array()<=m_max.array()).all(); }
/** Extends \c *this such that it contains the point \a p and returns a reference to \c *this. */ /** Extends \c *this such that it contains the point \a p and returns a reference to \c *this. */
template<typename Derived> template<typename Derived>
inline AlignedBox& extend(const MatrixBase<Derived>& a_p) inline AlignedBox& extend(const MatrixBase<Derived>& a_p)

7
test/geo_alignedbox.cpp
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@ -54,6 +54,13 @@ template<typename BoxType> void alignedbox(const BoxType& _box)
VERIFY(b2.contains(b1)); VERIFY(b2.contains(b1));
VERIFY_IS_APPROX(b2.clamp(b0), b0); VERIFY_IS_APPROX(b2.clamp(b0), b0);
// intersection
BoxType box1(VectorType::Random(dim));
box1.extend(VectorType::Random(dim));
BoxType box2(VectorType::Random(dim));
box2.extend(VectorType::Random(dim));
VERIFY(box1.intersects(box2) == !box1.intersection(box2).isEmpty());
// alignment -- make sure there is no memory alignment assertion // alignment -- make sure there is no memory alignment assertion
BoxType *bp0 = new BoxType(dim); BoxType *bp0 = new BoxType(dim);