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40 lines
1.4 KiB
C++
40 lines
1.4 KiB
C++
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#ifndef OSGUTIL_XJSimplePolytopeIntersector
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#define OSGUTIL_XJSimplePolytopeIntersector
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#include <osgUtil/IntersectionVisitor>
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#include <osgUtil/PolytopeIntersector>
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namespace osgUtil
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{
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//此求交器只用来计算多边形内部选中的对象，更深层的信息不计算
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class XJSimplePolytopeIntersector : public PolytopeIntersector
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{
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public:
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/** Construct a XJPolytopeIntersector using specified polytope in MODEL coordinates.*/
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XJSimplePolytopeIntersector(const osg::Polytope& polytope);
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/** Construct a XJPolytopeIntersector using specified polytope in specified coordinate frame.*/
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XJSimplePolytopeIntersector(CoordinateFrame cf, const osg::Polytope& polytope);
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/** Convenience constructor for supporting picking in WINDOW, or PROJECTION coordinates
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* In WINDOW coordinates (clip space cube) creates a five sided polytope box that has a front face at 0.0 and sides around box xMin, yMin, xMax, yMax.
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* In PROJECTION coordinates (clip space cube) creates a five sided polytope box that has a front face at -1 and sides around box xMin, yMin, xMax, yMax.
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* In VIEW and MODEL coordinates (clip space cube) creates a five sided polytope box that has a front face at 0.0 and sides around box xMin, yMin, xMax, yMax.*/
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XJSimplePolytopeIntersector(CoordinateFrame cf, double xMin, double yMin, double xMax, double yMax);
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virtual void intersect(osgUtil::IntersectionVisitor& iv, osg::Drawable* drawable);
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private:
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int m_num;
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};
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} // end namespace
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#endif |