68 lines
2.3 KiB
Plaintext
68 lines
2.3 KiB
Plaintext
//C++ header - Open Scene Graph - Copyright (C) 1998-2002 Robert Osfield
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//Distributed under the terms of the GNU Library General Public License (LGPL)
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//as published by the Free Software Foundation.
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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 SG_EXPORT LineSegment : public Referenced
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{
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public:
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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 Vec3& s,const Vec3& 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 Vec3& s,const Vec3& e) { _s=s; _e=e; }
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inline Vec3& start() { return _s; }
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inline const Vec3& start() const { return _s; }
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inline Vec3& end() { return _e; }
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inline const Vec3& end() const { return _e; }
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inline const bool valid() const { return _s.valid() && _e.valid() && _s!=_e; }
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/** return true if segment intersects BoundingBox.*/
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const bool intersect(const BoundingBox& bb) const;
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/** return true if segment intersects BoundingBox and return the intersection ratio's.*/
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const bool intersect(const BoundingBox& bb,float& r1,float& r2) const;
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/** return true if segment intersects BoundingSphere.*/
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const bool intersect(const BoundingSphere& bs) const;
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/** return true if segment intersects BoundingSphere and return the intersection ratio's.*/
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const bool intersect(const BoundingSphere& bs,float& r1,float& r2) const;
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/** return true if segment intersects triangle and set ratio long segment. */
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const bool intersect(const Vec3& v1,const Vec3& v2,const Vec3& v3,float& 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 const bool intersectAndClip(Vec3& s,Vec3& e,const BoundingBox& bb);
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Vec3 _s;
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Vec3 _e;
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};
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}
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#endif
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