First Version (tarini)

vcg/space/line3.h

@@ -24,6 +24,9 @@
   History
 
 $Log: not supported by cvs2svn $
+Revision 1.1  2004/03/08 16:15:48  tarini
+first version (tarini)
+
 
 
 ****************************************************************************/
@@ -79,14 +82,14 @@ public:
 	Line3() {};
 		/// The (origin, direction) constructor
 	LineType(const PointType &ori, const PointType &dir) { _ori=ori; _dir=dir; };
-		/// Operator to compare two bounding box
+		/// Operator to compare two lines
 	inline bool operator == ( LineType const & p ) const
 	{	return _ori==p._ori && _dir==p._dir; }
-		/// Operator to dispare two bounding box
+		/// Operator to dispare two lines
 	inline bool operator != ( LineType const & p ) const
 	{	return _ori!=p._ori || _dir!=p._dir; }
-		/// initializes the bounding box
+		/// Projects a point on the line
-	inline PointType Projection( const  PointType &p ) const
+	inline ScalarType Projection( const  PointType &p ) const
 	{ ScalarType l = dire.SquaredNorm();
 		return ScalarType((p-_ori)*_dir/l); }
 		///set up of the line.
@@ -100,7 +103,11 @@ public:
 	{ _dir.Normalize(); return *this;}
 	static LineType &Normalize(LineType &p)
 	{ p.Normalize(); return p;}
-
+	  /// importer for different line types
+	template <class Q>
+	inline void Import( const Line3<Q> & b )
+	{ _ori.Import( b._ori);	_dir.Import( b._dir);
+	}
 }; // end class definition
 
 

vcg/space/ray3.h

@@ -0,0 +1,122 @@
+/****************************************************************************
+* VCGLib                                                            o o     *
+* Visual and Computer Graphics Library                            o     o   *
+*                                                                _   O  _   *
+* Copyright(C) 2004                                                \/)\/    *
+* Visual Computing Lab                                            /\/|      *
+* ISTI - Italian National Research Council                           |      *
+*                                                                    \      *
+* All rights reserved.                                                      *
+*                                                                           *
+* This program is free software; you can redistribute it and/or modify      *   
+* it under the terms of the GNU General Public License as published by      *
+* the Free Software Foundation; either version 2 of the License, or         *
+* (at your option) any later version.                                       *
+*                                                                           *
+* This program is distributed in the hope that it will be useful,           *
+* but WITHOUT ANY WARRANTY; without even the implied warranty of            *
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the             *
+* GNU General Public License (http://www.gnu.org/licenses/gpl.txt)          *
+* for more details.                                                         *
+*                                                                           *
+****************************************************************************/
+/****************************************************************************
+  History
+
+$Log: not supported by cvs2svn $
+
+
+****************************************************************************/
+
+
+
+#ifndef __VCGLIB_RAY3
+#define __VCGLIB_RAY3
+
+#include <vcg/space/point3.h>
+
+namespace vcg {
+
+/** \addtogroup space */
+/*@{*/
+/** 
+Templated class for 3D ray.
+  This is the class for a semi-line in 3D space. A ray is stored just as origin and direction (Point3).
+	@param RayScalarType (template parameter) Specifies the type of scalar used to represent coords.
+*/
+template <class RayScalarType >
+class Ray3
+{
+public: 
+
+	/// The scalar type
+	typedef RayScalarType ScalarType;
+
+	/// The point type
+	typedef Point3<RayScalarType> PointType;
+
+	/// The point type
+	typedef Ray3<RayScalarType> RayType;
+
+private:
+
+	/// Origin
+	PointType _ori;
+
+	/// Direction (not necessarily normalized)
+	PointType _dir;
+
+public:
+
+		/// Members to access the origin, direction
+  inline const PointType &Ori() const { return _ori; } 
+  inline const PointType &Dir() const { return _dir; } 
+  inline PointType &Ori() { return _ori; } 
+  inline PointType &Dir() { return _dir; } 
+		/// The empty constructor
+	Ray3() {};
+		/// The (a,b) constructor
+	RayType(const PointType &a, const PointType &b) { _p0=a; _p1=b; };
+		/// Operator to compare two rays
+	inline bool operator == ( LineType const & p ) const
+	{	return _ori==p._ori && _dir==p._dir; }
+		/// Operator to dispare two rays
+	inline bool operator != ( LineType const & p ) const
+	{	return _ori!=p._ori || _dir!=p._dir; }
+		/// Projects a point on the ray (returns distance)
+	  /// projection exists iff result > 0
+	inline ScalarType Projection( const  PointType &p ) const
+	{ ScalarType l = dire.SquaredNorm();
+		return ScalarType((p-_ori)*_dir/l); }
+		///set up of the line.
+	void Set( const PointType & ori, const PointType & dir )
+	{	_ori = ori; _dir=dir }
+	  /// calculates the point of parameter t on the ray.
+	  /// if t>0, point is on the ray
+	inline PointType P( const ScalarType t ) const
+	{ return orig + dire * t; }
+		/// normalizes direction field
+	LineType &Normalize()
+	{ _dir.Normalize(); return *this;}
+	static LineType &Normalize(LineType &p)
+	{ p.Normalize(); return p;}
+	  /// importer for different Ray types
+	template <class Q>
+	inline void Import( const Ray3<Q> & b )
+	{ _ori.Import( b._ori);	_dir.Import( b._dir);
+	}
+
+}; // end class definition
+
+
+
+typedef Ray3<short>  Ray3s;
+typedef Ray3<int>	   Ray3i;
+typedef Ray3<float>  Ray3f;
+typedef Ray3<double> Ray3d;
+
+
+/*@}*/
+
+} // end namespace
+#endif

vcg/space/segment3.h

@@ -0,0 +1,129 @@
+/****************************************************************************
+* VCGLib                                                            o o     *
+* Visual and Computer Graphics Library                            o     o   *
+*                                                                _   O  _   *
+* Copyright(C) 2004                                                \/)\/    *
+* Visual Computing Lab                                            /\/|      *
+* ISTI - Italian National Research Council                           |      *
+*                                                                    \      *
+* All rights reserved.                                                      *
+*                                                                           *
+* This program is free software; you can redistribute it and/or modify      *   
+* it under the terms of the GNU General Public License as published by      *
+* the Free Software Foundation; either version 2 of the License, or         *
+* (at your option) any later version.                                       *
+*                                                                           *
+* This program is distributed in the hope that it will be useful,           *
+* but WITHOUT ANY WARRANTY; without even the implied warranty of            *
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the             *
+* GNU General Public License (http://www.gnu.org/licenses/gpl.txt)          *
+* for more details.                                                         *
+*                                                                           *
+****************************************************************************/
+/****************************************************************************
+  History
+
+$Log: not supported by cvs2svn $
+
+
+****************************************************************************/
+
+
+
+#ifndef __VCGLIB_SEGMENT3
+#define __VCGLIB_SEGMENT3
+
+#include <vcg/space/point3.h>
+#include <vcg/space/box3.h>
+
+namespace vcg {
+
+/** \addtogroup space */
+/*@{*/
+/** 
+Templated class for 3D segment.
+  This is the class for a segment in 3D space. A Segment is stored just as its two extrema (Point3).
+	@param SegmentScalarType (template parameter) Specifies the type of scalar used to represent coords.
+*/
+template <class SegmentScalarType >
+class Segment3
+{
+public: 
+
+	/// The scalar type
+	typedef SegmentScalarType ScalarType;
+
+	/// The point type
+	typedef Point3<SegmentScalarType> PointType;
+
+	/// The point type
+	typedef Segment3<SegmentScalarType> SegmentType;
+
+private:
+
+	/// _extrema
+	PointType _p0,_p1;
+
+public:
+
+		/// Members to access either extrema
+  inline const PointType &P0() const { return _p0; } 
+  inline const PointType &P1() const { return _p1; } 
+  inline PointType &P0() { return _p0; } 
+  inline PointType &P1() { return _p1; } 
+		/// The empty constructor
+	Segment3() {};
+		/// The (a,b) constructor
+	SegmentType(const PointType &a, const PointType &b) { _p0=a; _p1=b; };
+		/// Operator to compare two bounding box
+	inline bool operator == ( SegmentType const & p ) const
+	{	return _p0==p._p0 && _p1==p._p1; }
+		/// Operator to dispare two bounding box
+	inline bool operator != ( SegmentType const & p ) const
+	{	return _p0!=p._p0 || _p1!=p._p1; }
+		/// initializes the bounding box
+	void Set( const PointType &a, const PointType &b)
+	{	_p0=a; _p1=b;}
+	  /// calculates the point of parameter t on the segment.
+	  /// if t is in [0..1] returned point is inside the segment
+	inline PointType P( const ScalarType t ) const
+	{ return _p0 + (_p1 - _p0) * t; }
+	  /// return the middle point
+	inline PointType MidPoint( ) const
+	{ return ( _p0 +  _p1) / ScalarType(2.0) ; }
+	  /// return the bounding box
+	inline Box3<ScalarType> BBox( ) const
+	{ Box3<ScalarType> t; 
+	  if (_p0[0]<_p1[0]) { t.min[0]=_p0[0];t.max[0]=_p1[0];} else { t.min[0]=_p1[0];t.max[0]=_p0[0];}
+		if (_p0[1]<_p1[1]) { t.min[1]=_p0[1];t.max[1]=_p1[1];} else { t.min[1]=_p1[1];t.max[1]=_p0[1];}
+	  if (_p0[2]<_p1[2]) { t.min[2]=_p0[2];t.max[2]=_p1[2];} else { t.min[2]=_p1[2];t.max[2]=_p0[2];}
+	  return t; }
+		/// return lenght
+	SegmentType &Length()
+	{ return (_p0 - _p1).Norm(); }
+		/// return squared lenght
+	SegmentType &SquaredLength()
+	{ return (_p0 - _p1).SquaredNorm(); }
+	  /// flips: a-b becomes b-a
+	void Flip()
+	{ PointType t=_p0; _p0=_p1; _p1=t; }
+	template <class Q>
+	  /// importer for different line types
+	inline void Import( const Segment3<Q> & b )
+	{ _p0.Import( b._p0);	_p1.Import( b._p1);
+	}
+
+}; // end class definition
+
+
+
+typedef Segment3<short>  Segment3s;
+typedef Segment3<int>	   Segment3i;
+typedef Segment3<float>  Segment3f;
+typedef Segment3<double> Segment3d;
+
+
+/*@}*/
+
+} // end namespace
+#endif