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-rw-r--r--eigen/unsupported/doc/examples/BVH_Example.cpp50
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diff --git a/eigen/unsupported/doc/examples/BVH_Example.cpp b/eigen/unsupported/doc/examples/BVH_Example.cpp
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--- a/eigen/unsupported/doc/examples/BVH_Example.cpp
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@@ -1,50 +0,0 @@
-#include <Eigen/StdVector>
-#include <unsupported/Eigen/BVH>
-#include <iostream>
-
-using namespace Eigen;
-typedef AlignedBox<double, 2> Box2d;
-
-namespace Eigen {
- Box2d bounding_box(const Vector2d &v) { return Box2d(v, v); } //compute the bounding box of a single point
-}
-
-struct PointPointMinimizer //how to compute squared distances between points and rectangles
-{
- PointPointMinimizer() : calls(0) {}
- typedef double Scalar;
-
- double minimumOnVolumeVolume(const Box2d &r1, const Box2d &r2) { ++calls; return r1.squaredExteriorDistance(r2); }
- double minimumOnVolumeObject(const Box2d &r, const Vector2d &v) { ++calls; return r.squaredExteriorDistance(v); }
- double minimumOnObjectVolume(const Vector2d &v, const Box2d &r) { ++calls; return r.squaredExteriorDistance(v); }
- double minimumOnObjectObject(const Vector2d &v1, const Vector2d &v2) { ++calls; return (v1 - v2).squaredNorm(); }
-
- int calls;
-};
-
-int main()
-{
- typedef std::vector<Vector2d, aligned_allocator<Vector2d> > StdVectorOfVector2d;
- StdVectorOfVector2d redPoints, bluePoints;
- for(int i = 0; i < 100; ++i) { //initialize random set of red points and blue points
- redPoints.push_back(Vector2d::Random());
- bluePoints.push_back(Vector2d::Random());
- }
-
- PointPointMinimizer minimizer;
- double minDistSq = std::numeric_limits<double>::max();
-
- //brute force to find closest red-blue pair
- for(int i = 0; i < (int)redPoints.size(); ++i)
- for(int j = 0; j < (int)bluePoints.size(); ++j)
- minDistSq = std::min(minDistSq, minimizer.minimumOnObjectObject(redPoints[i], bluePoints[j]));
- std::cout << "Brute force distance = " << sqrt(minDistSq) << ", calls = " << minimizer.calls << std::endl;
-
- //using BVH to find closest red-blue pair
- minimizer.calls = 0;
- KdBVH<double, 2, Vector2d> redTree(redPoints.begin(), redPoints.end()), blueTree(bluePoints.begin(), bluePoints.end()); //construct the trees
- minDistSq = BVMinimize(redTree, blueTree, minimizer); //actual BVH minimization call
- std::cout << "BVH distance = " << sqrt(minDistSq) << ", calls = " << minimizer.calls << std::endl;
-
- return 0;
-}