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101 lines
3.5 KiB
101 lines
3.5 KiB
/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2004 Robert Osfield |
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* |
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* This library is open source and may be redistributed and/or modified under |
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* the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or |
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* (at your option) any later version. The full license is in LICENSE file |
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* included with this distribution, and on the openscenegraph.org website. |
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* |
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* This library is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* OpenSceneGraph Public License for more details. |
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*/ |
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#ifndef OSG_LINESEGMENT |
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#define OSG_LINESEGMENT 1 |
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#include <osg/Matrix> |
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#include <osg/BoundingBox> |
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#include <osg/BoundingSphere> |
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namespace osg { |
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/** LineSegment class for representing a line segment. */ |
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class OSG_EXPORT LineSegment : public Referenced |
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{ |
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public: |
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typedef Vec3d vec_type; |
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typedef vec_type::value_type value_type; |
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LineSegment() {}; |
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LineSegment(const LineSegment& seg) : Referenced(),_s(seg._s),_e(seg._e) {} |
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LineSegment(const vec_type& s,const vec_type& e) : _s(s),_e(e) {} |
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LineSegment& operator = (const LineSegment& seg) { _s = seg._s; _e = seg._e; return *this; } |
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inline void set(const vec_type& s,const vec_type& e) { _s=s; _e=e; } |
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inline vec_type& start() { return _s; } |
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inline const vec_type& start() const { return _s; } |
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inline vec_type& end() { return _e; } |
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inline const vec_type& end() const { return _e; } |
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inline bool valid() const { return _s.valid() && _e.valid() && _s!=_e; } |
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/** return true if segment intersects BoundingBox. */ |
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bool intersect(const BoundingBox& bb) const; |
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/** return true if segment intersects BoundingBox |
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* and return the intersection ratios. |
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*/ |
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bool intersect(const BoundingBox& bb,float& r1,float& r2) const; |
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/** return true if segment intersects BoundingBox |
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* and return the intersection ratios. |
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*/ |
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bool intersect(const BoundingBox& bb,double& r1,double& r2) const; |
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/** return true if segment intersects BoundingSphere. */ |
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bool intersect(const BoundingSphere& bs) const; |
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/** return true if segment intersects BoundingSphere and return the |
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* intersection ratio. |
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*/ |
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bool intersect(const BoundingSphere& bs,float& r1,float& r2) const; |
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/** return true if segment intersects BoundingSphere and return the |
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* intersection ratio. |
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*/ |
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bool intersect(const BoundingSphere& bs,double& r1,double& r2) const; |
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/** return true if segment intersects triangle |
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* and set ratio long segment. |
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*/ |
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bool intersect(const Vec3f& v1,const Vec3f& v2,const Vec3f& v3,float& r); |
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/** return true if segment intersects triangle |
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* and set ratio long segment. |
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*/ |
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bool intersect(const Vec3d& v1,const Vec3d& v2,const Vec3d& v3,double& r); |
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/** post multiply a segment by matrix.*/ |
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inline void mult(const LineSegment& seg,const Matrix& m) { _s = seg._s*m; _e = seg._e*m; } |
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/** pre multiply a segment by matrix.*/ |
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inline void mult(const Matrix& m,const LineSegment& seg) { _s = m*seg._s; _e = m*seg._e; } |
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protected: |
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virtual ~LineSegment(); |
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static bool intersectAndClip(vec_type& s,vec_type& e,const BoundingBox& bb); |
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vec_type _s; |
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vec_type _e; |
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}; |
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} |
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#endif
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