/usr/include/sofa/component/collision/ is in libsofa1-dev 1.0~beta4-10ubuntu2.
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..
/usr/include/sofa/component/collision/BarycentricContactMapper.h
/usr/include/sofa/component/collision/BarycentricContactMapper.inl
/usr/include/sofa/component/collision/BarycentricPenalityContact.h
/usr/include/sofa/component/collision/BarycentricPenalityContact.inl
/usr/include/sofa/component/collision/BruteForceDetection.h
/usr/include/sofa/component/collision/CarvingManager.h
/usr/include/sofa/component/collision/ContinuousIntersection.h
/usr/include/sofa/component/collision/ContinuousTriangleIntersection.h
/usr/include/sofa/component/collision/Cube.h
/usr/include/sofa/component/collision/CubeModel.h
/usr/include/sofa/component/collision/DefaultCollisionGroupManager.h
/usr/include/sofa/component/collision/DefaultContactManager.h
/usr/include/sofa/component/collision/DefaultPipeline.h
/usr/include/sofa/component/collision/DiscreteIntersection.h
/usr/include/sofa/component/collision/DiscreteIntersection.inl
/usr/include/sofa/component/collision/DistanceGridCollisionModel.h
/usr/include/sofa/component/collision/FrictionContact.h
/usr/include/sofa/component/collision/FrictionContact.inl
/usr/include/sofa/component/collision/GridModel.h
/usr/include/sofa/component/collision/Line.h
/usr/include/sofa/component/collision/LineModel.h
/usr/include/sofa/component/collision/LocalMinDistance.h
/usr/include/sofa/component/collision/MinProximityIntersection.h
/usr/include/sofa/component/collision/NewProximityIntersection.h
/usr/include/sofa/component/collision/NewProximityIntersection.inl
/usr/include/sofa/component/collision/Point.h
/usr/include/sofa/component/collision/PointModel.h
/usr/include/sofa/component/collision/Ray.h
/usr/include/sofa/component/collision/RayContact.h
/usr/include/sofa/component/collision/RayModel.h
/usr/include/sofa/component/collision/RayPickInteractor.h
/usr/include/sofa/component/collision/RayPickInteractor.inl
/usr/include/sofa/component/collision/RayTraceDetection.h
/usr/include/sofa/component/collision/RayTriangleIntersection.h
/usr/include/sofa/component/collision/RuleBasedContactManager.h
/usr/include/sofa/component/collision/SpatialGridPointModel.h
/usr/include/sofa/component/collision/Sphere.h
/usr/include/sofa/component/collision/SphereModel.h
/usr/include/sofa/component/collision/SphereTreeModel.h
/usr/include/sofa/component/collision/TetrahedronModel.h
/usr/include/sofa/component/collision/TopologicalChangeManager.h
/usr/include/sofa/component/collision/Triangle.h
/usr/include/sofa/component/collision/TriangleModel.h
/usr/include/sofa/component/collision/TriangleOctree.h
/usr/include/sofa/component/collision/TriangleOctreeModel.h
/usr/include/sofa/component/collision/VoxelGrid.h
/usr/include/sofa/component/collision/initCollision.h