140 lines
4.2 KiB
C++
140 lines
4.2 KiB
C++
/**
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* @file Point3.h
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* @brief 3D Point
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* @author Alireza Fathi
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* @author Christian Potthast
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* @author Frank Dellaert
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*/
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// \callgraph
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#pragma once
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#include <boost/serialization/nvp.hpp>
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#include <gtsam/base/Matrix.h>
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#include <gtsam/base/Testable.h>
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#include <gtsam/base/Lie.h>
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namespace gtsam {
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/** A 3D point */
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class Point3: Testable<Point3>, public Lie<Point3> {
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public:
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/// dimension of the variable - used to autodetect sizes
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static const size_t dimension = 3;
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private:
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double x_, y_, z_;
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public:
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Point3(): x_(0), y_(0), z_(0) {}
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Point3(const Point3 &p) : x_(p.x_), y_(p.y_), z_(p.z_) {}
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Point3(double x, double y, double z): x_(x), y_(y), z_(z) {}
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Point3(const Vector& v) : x_(v(0)), y_(v(1)), z_(v(2)) {}
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/** print with optional string */
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void print(const std::string& s = "") const;
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/** equals with an tolerance */
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bool equals(const Point3& p, double tol = 1e-9) const;
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/** dimension of the variable - used to autodetect sizes */
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inline static size_t Dim() { return dimension; }
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/** Lie requirements */
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/** return DOF, dimensionality of tangent space */
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inline size_t dim() const { return dimension; }
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/** "Inverse" - negates the coordinates such that compose(p, inverse(p)) = Point3() */
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inline Point3 inverse() const { return Point3(-x_, -y_, -z_); }
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/** "Compose" - just adds coordinates of two points */
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inline Point3 compose(const Point3& p1) const { return *this+p1; }
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/** Exponential map at identity - just create a Point3 from x,y,z */
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static inline Point3 Expmap(const Vector& v) { return Point3(v); }
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/** Log map at identity - return the x,y,z of this point */
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static inline Vector Logmap(const Point3& dp) { return Vector_(3, dp.x(), dp.y(), dp.z()); }
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/** return vectorized form (column-wise)*/
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Vector vector() const {
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//double r[] = { x_, y_, z_ };
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Vector v(3); v(0)=x_; v(1)=y_; v(2)=z_;
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return v;
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}
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/** get functions for x, y, z */
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inline double x() const {return x_;}
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inline double y() const {return y_;}
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inline double z() const {return z_;}
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/** operators */
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Point3 operator - () const { return Point3(-x_,-y_,-z_);}
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bool operator ==(const Point3& q) const;
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Point3 operator + (const Point3& q) const;
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Point3 operator - (const Point3& q) const;
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Point3 operator * (double s) const;
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Point3 operator / (double s) const;
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/** distance between two points */
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double dist(const Point3& p2) const {
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return sqrt(pow(x()-p2.x(),2.0) + pow(y()-p2.y(),2.0) + pow(z()-p2.z(),2.0));
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}
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/** friends */
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friend Point3 cross(const Point3 &p1, const Point3 &p2);
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friend double dot(const Point3 &p1, const Point3 &p2);
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friend double norm(const Point3 &p1);
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private:
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/** Serialization function */
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friend class boost::serialization::access;
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template<class Archive>
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void serialize(Archive & ar, const unsigned int version)
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{
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ar & BOOST_SERIALIZATION_NVP(x_);
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ar & BOOST_SERIALIZATION_NVP(y_);
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ar & BOOST_SERIALIZATION_NVP(z_);
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}
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};
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/** "Compose" - just adds coordinates of two points */
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inline Matrix Dcompose1(const Point3& p1, const Point3& p0) {
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return Matrix_(3,3,
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1.0, 0.0, 0.0,
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0.0, 1.0, 0.0,
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0.0, 0.0, 1.0);
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}
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inline Matrix Dcompose2(const Point3& p1, const Point3& p0) {
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return Matrix_(3,3,
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1.0, 0.0, 0.0,
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0.0, 1.0, 0.0,
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0.0, 0.0, 1.0);
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}
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/** Syntactic sugar for multiplying coordinates by a scalar s*p */
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inline Point3 operator*(double s, const Point3& p) { return p*s;}
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/** add two points, add(p,q) is same as p+q */
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Point3 add (const Point3 &p, const Point3 &q);
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Matrix Dadd1(const Point3 &p, const Point3 &q);
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Matrix Dadd2(const Point3 &p, const Point3 &q);
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/** subtract two points, sub(p,q) is same as p-q */
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Point3 sub (const Point3 &p, const Point3 &q);
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Matrix Dsub1(const Point3 &p, const Point3 &q);
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Matrix Dsub2(const Point3 &p, const Point3 &q);
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/** cross product */
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Point3 cross(const Point3 &p, const Point3 &q);
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/** dot product */
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double dot(const Point3 &p, const Point3 &q);
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/** dot product */
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double norm(const Point3 &p);
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}
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