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Add intersects(Sphere, Point) and intersects(Point, Sphere) #584

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Dec 14, 2021
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Add intersects(Sphere, Point) and intersects(Point, Sphere) #584

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12 changes: 12 additions & 0 deletions src/details/ArborX_DetailsAlgorithms.hpp
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Original file line number Diff line number Diff line change
Expand Up @@ -171,6 +171,18 @@ bool intersects(Sphere const &sphere, Box const &box)
return distance(sphere.centroid(), box) <= sphere.radius();
}

KOKKOS_INLINE_FUNCTION
bool intersects(Sphere const &sphere, Point const &point)
{
return distance(sphere.centroid(), point) <= sphere.radius();
}

KOKKOS_INLINE_FUNCTION
bool intersects(Point const &point, Sphere const &sphere)
{
return intersects(sphere, point);
}

// calculate the centroid of a box
KOKKOS_INLINE_FUNCTION
void centroid(Box const &box, Point &c)
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9 changes: 7 additions & 2 deletions test/tstDetailsAlgorithms.cpp
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Expand Up @@ -89,8 +89,13 @@ BOOST_AUTO_TEST_CASE(intersects)

// unit sphere
constexpr Sphere sphere{{{0., 0., 0.}}, 1.};
BOOST_TEST(intersects(sphere, {{{0., 0., 0.}}, {{1., 1., 1.}}}));
BOOST_TEST(!intersects(sphere, {{{1., 2., 3.}}, {{4., 5., 6.}}}));
BOOST_TEST(intersects(sphere, Box{{{0., 0., 0.}}, {{1., 1., 1.}}}));
BOOST_TEST(!intersects(sphere, Box{{{1., 2., 3.}}, {{4., 5., 6.}}}));
BOOST_TEST(intersects(sphere, Point{0., 0.5, 0.5}));
BOOST_TEST(intersects(sphere, Point{0., 0., 1.0}));
BOOST_TEST(intersects(Point{-1., 0., 0.}, sphere));
BOOST_TEST(intersects(Point{-0.6, -0.8, 0.}, sphere));
BOOST_TEST(!intersects(Point{-0.7, -0.8, 0.}, sphere));
}

BOOST_AUTO_TEST_CASE(equals)
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