#include <simgear/math/SGGeometry.hxx>
#include <simgear/structure/SGSharedPtr.hxx>
-#include <simgear/scene/material/mat.hxx>
#include "BVHVisitor.hxx"
#include "BVHNode.hxx"
namespace simgear {
+class BVHMaterial;
+
class BVHLineSegmentVisitor : public BVHVisitor {
public:
BVHLineSegmentVisitor(const SGLineSegmentd& lineSegment,