Defines cylinder. More...

#include <geomObjects.h>

Inheritance diagram for geom::Cylinder:

Collaboration diagram for geom::Cylinder:

Public Member Functions
	Cylinder ()
	Constructor.

	Cylinder (double r, double l, util::Point x_begin, util::Point xa, std::string description="")
	Constructor.

	Cylinder (double r, util::Point x_begin, util::Point xa, std::string description="")
	Constructor.

	Cylinder (const Cylinder &other)
	Copy constructor.

Cylinder &	operator= (const Cylinder &other)
	Assignment operator.

void	transform (const util::Point &translation, const double &scale, const double &angle, const util::Point &axis, const util::Point *rotationPoint) override
	Similarity about pivot \(\mathbf p\) (default: old center `d_x`), then rigid displacement \(\mathbf t\) = `translation:` \(\mathbf y = \mathbf p + s\,\mathbf R(\mathbf x-\mathbf p) + \mathbf t\). When \(\theta=0\) and \(s=1\), \(\mathbf y = \mathbf x + \mathbf t\) for every point and the center.

double	volume () const override
	Computes the volume (area in 2d, length in 1d) of object.

util::Point	center () const override
	Computes the center of object.

std::pair< util::Point, util::Point >	box () const override
	Computes the bounding box of object.

std::pair< util::Point, util::Point >	box (const double &tol) const override
	Computes the bounding box of object.

double	inscribedRadius () const override
	Computes the radius of biggest circle/sphere completely within the object.

double	boundingRadius () const override
	Computes the radius of smallest circle/sphere such that object can be fit into it.

std::string	printStr (int nt, int lvl) const override
	Returns the string containing printable information about the object.

void	print (int nt, int lvl) const override
	Prints the information about the object.

void	print () const override
	Prints the information about the object.

Interaction with point
bool	isInside (const util::Point &x) const override
	Checks if point is inside this object.

bool	isOutside (const util::Point &x) const override
	Checks if point is outside of this object.

bool	isNear (const util::Point &x, const double &tol) const override
	Checks if point is within given distance of this object.

bool	isNearBoundary (const util::Point &x, const double &tol, const bool &within) const override
	cons

bool	doesIntersect (const util::Point &x) const override
	Checks if point lies exactly on the boundary.

Interaction with box
bool	isInside (const std::pair< util::Point, util::Point > &box) const override
	Checks if box is completely inside.

bool	isOutside (const std::pair< util::Point, util::Point > &box) const override
	Checks if box is outside of the object.

bool	isNear (const std::pair< util::Point, util::Point > &box, const double &tol) const override
	Checks if box is within given distance of this object.

bool	doesIntersect (const std::pair< util::Point, util::Point > &box) const override
	Checks if box intersects this object.

Public Member Functions inherited from geom::GeomObject
	GeomObject (std::string name="", std::string description="")
	Constructor.

virtual bool	wallContactQuery (const util::Point &x, WallContactHit &hit) const
	Closest-point / signed-gap query for analytical wall contact. Default: unsupported (returns false, clears `hit`).

Data Fields
util::Point	d_x
	Center.

util::Point	d_xBegin
	Center point of cross-section at the beginning.

util::Point	d_xa
	Axis of cylinder (unit vector)

double	d_r
	Radius.

double	d_l
	Length.

Data Fields inherited from geom::GeomObject
const std::string	d_name
	name of object

const std::string	d_description
	Further description of object.

std::vector< std::string >	d_tags
	Tags/attributes about the object.

Detailed Description

Defines cylinder.

Definition at line 3139 of file geomObjects.h.

Constructor & Destructor Documentation

◆ Cylinder() [1/4]

geom::Cylinder::Cylinder ( )

inline

Constructor.

Definition at line 3160 of file geomObjects.h.

      : GeomObject("cylinder", ""),
        d_xBegin(util::Point()),
        d_xa(util::Point(1., 1., 1.)),
        d_r(0.),
        d_l(0.),
        d_x(util::Point()) {
    };

◆ Cylinder() [2/4]

geom::Cylinder::Cylinder	(	double	r,
		double	l,
		util::Point	x_begin,
		util::Point	xa,
		std::string	description = `""`
	)

inline

Constructor.

Parameters

r	Radius of cylinder
l	Length of cylinder
x_begin	Center of the bottom bottom cross-section
xa	Axis of cylinder (if it is not a unit vector, we compute unit vector along xa)
description	Description of object (e.g., further classification or any tag)

Definition at line 3178 of file geomObjects.h.

      : GeomObject("cylinder", description),
        d_xBegin(x_begin),
        d_xa(xa / xa.length()),
        d_r(r),
        d_l(l),
        d_x(x_begin + 0.5 * l * (xa / xa.length())) {
    };

◆ Cylinder() [3/4]

geom::Cylinder::Cylinder	(	double	r,
		util::Point	x_begin,
		util::Point	xa,
		std::string	description = `""`
	)

inline

Constructor.

Parameters

r	Radius of cylinder
x_begin	Center of the bottom bottom cross-section
xa	Axis of cylinder (should be the actual vector from center of bottom section to top section so that the length of the vector is a length of cylinder)
description	Description of object (e.g., further classification or any tag)

Definition at line 3197 of file geomObjects.h.

            : GeomObject("cylinder", description),
              d_xBegin(x_begin),
              d_xa(xa / xa.length()),
              d_r(r),
              d_l(xa.length()),
              d_x(x_begin + 0.5 * xa) {};

◆ Cylinder() [4/4]

geom::Cylinder::Cylinder ( const Cylinder & other )

inline

Copy constructor.

Parameters

other Object to copy from

Definition at line 3210 of file geomObjects.h.

      : GeomObject(other.d_name, other.d_description),
        d_xBegin(other.d_xBegin),
        d_xa(other.d_xa),
        d_r(other.d_r),
        d_l(other.d_l),
        d_x(other.d_x) {
      d_tags = other.d_tags;
    }

References geom::GeomObject::d_tags.

Member Function Documentation

◆ boundingRadius()

double geom::Cylinder::boundingRadius ( ) const

overridevirtual

Computes the radius of smallest circle/sphere such that object can be fit into it.

Returns: Radius Radius of bounding circle/sphere

Reimplemented from geom::GeomObject.

Definition at line 1696 of file geomObjects.cpp.

                                          {
 
      return 0.5 * std::sqrt(d_l * d_l + 4. * d_r * d_r);
    }

References d_l, and d_r.

◆ box() [1/2]

std::pair< util::Point, util::Point > geom::Cylinder::box ( ) const

overridevirtual

Computes the bounding box of object.

Returns: Pair Left-bottom-back and right-top-front corner points of box

Reimplemented from geom::GeomObject.

Definition at line 1670 of file geomObjects.cpp.

                                                      {
 
      return box(0.);
    }

References box().

Referenced by box(), doesIntersect(), inscribedRadius(), isInside(), isNear(), isOutside(), and printStr().

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◆ box() [2/2]

std::pair< util::Point, util::Point > geom::Cylinder::box ( const double & tol ) const

overridevirtual

Computes the bounding box of object.

Parameters

tol	Tolerance/padding used in creating bounding box

Returns: Pair Left-bottom-back and right-top-front corner points of box

Reimplemented from geom::GeomObject.

Definition at line 1676 of file geomObjects.cpp.

                                         {
 
      if (d_xa.length() < 1.0E-10)
        return {util::Point(), util::Point()};
 
      auto xb = d_xBegin - tol * d_xa;
      auto xt = d_xBegin + (d_l + tol) * d_xa;
 
      double r = d_r + tol;
 
      return {xb - r, xt + r};
    }

References d_l, d_r, d_xa, d_xBegin, and util::Point::length().

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◆ center()

util::Point geom::Cylinder::center ( ) const

overridevirtual

Computes the center of object.

Returns: Point Coordinates of center

Reimplemented from geom::GeomObject.

Definition at line 1666 of file geomObjects.cpp.

                                     {
      return d_x;
    }

References d_x.

◆ doesIntersect() [1/2]

bool geom::Cylinder::doesIntersect ( const std::pair< util::Point, util::Point > & box ) const

overridevirtual

Checks if box intersects this object.

Parameters

box Box

Returns: True True if intersects

Reimplemented from geom::GeomObject.

Definition at line 1804 of file geomObjects.cpp.

                                                            {
 
      // need to check all four corner points
      for (auto p: geom::getCornerPoints(3, box))
        if (this->isInside(p))
          return true;
 
      return false;
    }

References box(), geom::getCornerPoints(), and isInside().

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◆ doesIntersect() [2/2]

bool geom::Cylinder::doesIntersect ( const util::Point & x ) const

overridevirtual

Checks if point lies exactly on the boundary.

Parameters

x Point

Returns: True True if it lies on the boundary

Reimplemented from geom::GeomObject.

Definition at line 1771 of file geomObjects.cpp.

                                                         {
 
      return isNearBoundary(x, 1.0E-8, false);
    }

References isNearBoundary().

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◆ inscribedRadius()

double geom::Cylinder::inscribedRadius ( ) const

overridevirtual

Computes the radius of biggest circle/sphere completely within the object.

Returns: Radius Radius of inscribed circle/sphere

Reimplemented from geom::GeomObject.

Definition at line 1689 of file geomObjects.cpp.

                                           {
 
      auto box = this->box();
 
      return 0.5 * (box.second - box.first).length();
    }

References box().

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◆ isInside() [1/2]

bool geom::Cylinder::isInside ( const std::pair< util::Point, util::Point > & box ) const

overridevirtual

Checks if box is completely inside.

Parameters

box Box

Returns: True True if box lies inside

Reimplemented from geom::GeomObject.

Definition at line 1776 of file geomObjects.cpp.

                                                            {
 
      for (auto p: geom::getCornerPoints(3, box))
        if (!this->isInside(p))
          return false;
 
      return true;
    }

References box(), geom::getCornerPoints(), and isInside().

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◆ isInside() [2/2]

bool geom::Cylinder::isInside ( const util::Point & x ) const

overridevirtual

Checks if point is inside this object.

Parameters

x Point

Returns: True If point lies inside

Reimplemented from geom::GeomObject.

Definition at line 1701 of file geomObjects.cpp.

                                                    {
 
      auto dx = x - d_xBegin;
 
      if (dx.length() < 1.0E-10)
        return true;
 
      double dx_dot_xa = dx * d_xa;
      if (util::isLess(dx_dot_xa, 0.) or
          util::isGreater(dx_dot_xa, d_l))
        return false;
      else {
 
        // project dx onto cross-section plane of cylinder
        auto dx_project = dx - dx_dot_xa * d_xa;
 
        return !util::isGreater(dx_project.length(), d_r + 1.0E-12);
      }
    }

References d_l, d_r, d_xa, d_xBegin, util::isGreater(), and util::isLess().

Referenced by doesIntersect(), isInside(), isOutside(), and isOutside().

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◆ isNear() [1/2]

bool geom::Cylinder::isNear	(	const std::pair< util::Point, util::Point > &	box,
		const double &	tol
	)		const

overridevirtual

Checks if box is within given distance of this object.

Parameters

box	Box
tol	Tolerance used in checking the nearness

Returns: True True if box is inside within the tol distance

Reimplemented from geom::GeomObject.

Definition at line 1797 of file geomObjects.cpp.

                                     {
 
      return geom::areBoxesNear(this->box(), box, tol, 3);
    }

References geom::areBoxesNear(), and box().

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◆ isNear() [2/2]

bool geom::Cylinder::isNear	(	const util::Point &	x,
		const double &	tol
	)		const

overridevirtual

Checks if point is within given distance of this object.

Parameters

x	Point
tol	Tolerance used in checking the nearness

Returns: True True if within the tol distance

Reimplemented from geom::GeomObject.

Definition at line 1725 of file geomObjects.cpp.

                {
 
      auto dx = x - d_xBegin;
 
      if (dx.length() < tol)
        return true;
 
      double dx_dot_xa = dx * d_xa;
      if (util::isLess(dx_dot_xa, -tol) or
          util::isGreater(dx_dot_xa, d_l + tol))
        return false;
      else {
 
        // project dx onto cross-section plane of cylinder
        auto dx_project = dx - dx_dot_xa * d_xa;
 
        return !util::isGreater(dx_project.length(), d_r + tol);
      }
    }

References d_l, d_r, d_xa, d_xBegin, util::isGreater(), and util::isLess().

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◆ isNearBoundary()

bool geom::Cylinder::isNearBoundary	(	const util::Point &	x,
		const double &	tol,
		const bool &	within
	)		const

overridevirtual

cons

Reimplemented from geom::GeomObject.

Definition at line 1746 of file geomObjects.cpp.

                                                                 {
 
      auto dx = x - d_xBegin;
 
      if (dx.length() < tol)
        return true;
 
      double dx_dot_xa = dx * d_xa;
      if (util::isLess(dx_dot_xa, -tol) or
          util::isGreater(dx_dot_xa, tol) or
          util::isGreater(dx_dot_xa, d_l + tol) or
          util::isLess(dx_dot_xa, d_l - tol))
        return false;
      else {
 
        // project dx onto cross-section plane of cylinder
        auto dx_project = dx - dx_dot_xa * d_xa;
 
        return !(util::isLess(dx_project.length(), d_r - tol) or
                 util::isGreater(dx_project.length(), d_r + tol));
      }
    }

References d_l, d_r, d_xa, d_xBegin, util::isGreater(), and util::isLess().

Referenced by doesIntersect().

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◆ isOutside() [1/2]

bool geom::Cylinder::isOutside ( const std::pair< util::Point, util::Point > & box ) const

overridevirtual

Checks if box is outside of the object.

Parameters

box Box

Returns: True True if box lies outside

Reimplemented from geom::GeomObject.

Definition at line 1786 of file geomObjects.cpp.

                                                            {
 
      bool intersect = false;
      for (auto p: geom::getCornerPoints(3, box))
        if (!intersect)
          intersect = this->isInside(p);
 
      return !intersect;
    }

References box(), geom::getCornerPoints(), and isInside().

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◆ isOutside() [2/2]

bool geom::Cylinder::isOutside ( const util::Point & x ) const

overridevirtual

Checks if point is outside of this object.

Parameters

x Point

Returns: True If point lies outside

Reimplemented from geom::GeomObject.

Definition at line 1721 of file geomObjects.cpp.

                                                     {
      return !isInside(x);
    }

References isInside().

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◆ operator=()

Cylinder & geom::Cylinder::operator= ( const Cylinder & other )

inline

Assignment operator.

Parameters

other Object to copy from

Returns: Reference to this object

Definition at line 3225 of file geomObjects.h.

                                               {
      if (this != &other) {
        // Copy base class members
        d_tags = other.d_tags;
        
        // Copy member variables
        d_xBegin = other.d_xBegin;
        d_xa = other.d_xa;
        d_r = other.d_r;
        d_l = other.d_l;
        d_x = other.d_x;
      }
      return *this;
    }

References d_l, d_r, geom::GeomObject::d_tags, d_x, d_xa, and d_xBegin.

◆ print() [1/2]

void geom::Cylinder::print ( ) const

inlineoverridevirtual

Prints the information about the object.

Reimplemented from geom::GeomObject.

Definition at line 3369 of file geomObjects.h.

3369{ print(0, 0); };

geom::Cylinder::print

void print() const override

Prints the information about the object.

Definition geomObjects.h:3369

References print().

Referenced by print().

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◆ print() [2/2]

void geom::Cylinder::print	(	int	nt,
		int	lvl
	)		const

inlineoverridevirtual

Prints the information about the object.

Parameters

nt	Number of tabs to append before printing
lvl	Information level (higher means more information)

Reimplemented from geom::GeomObject.

Definition at line 3362 of file geomObjects.h.

                                               {
      std::cout << printStr(nt, lvl);
    };

References printStr().

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◆ printStr()

std::string geom::Cylinder::printStr	(	int	nt,
		int	lvl
	)		const

overridevirtual

Returns the string containing printable information about the object.

Parameters

nt	Number of tabs to append before printing
lvl	Information level (higher means more information)

Returns: string String containing printable information about the object

Reimplemented from geom::GeomObject.

Definition at line 1816 of file geomObjects.cpp.

                                                      {
 
      auto tabS = util::io::getTabS(nt);
 
      std::ostringstream oss;
 
      oss << tabS << "------- Cylinder --------" << std::endl << std::endl;
      oss << tabS << "Name = " << d_name << std::endl;
      oss << tabS << "Center = " << d_xBegin.printStr(0, lvl) << std::endl;
      oss << tabS << "Axis = " << d_xa.printStr(0, lvl) << std::endl;
      oss << tabS << "Radius = " << d_r << std::endl;
      oss << tabS << "Center = " << d_x.printStr(0, 0) << std::endl;
 
      if (lvl > 0)
        oss << tabS << "Bounding box: "
            << util::io::printBoxStr(box(0.), nt + 1);
 
      if (lvl == 0)
        oss << std::endl;
 
      return oss.str();
    }

References box(), geom::GeomObject::d_name, d_r, d_x, d_xa, d_xBegin, util::io::getTabS(), util::io::printBoxStr(), and util::Point::printStr().

Referenced by print().

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◆ transform()

void geom::Cylinder::transform	(	const util::Point &	translation,
		const double &	scale,
		const double &	angle,
		const util::Point &	axis,
		const util::Point *	rotationPoint
	)

inlineoverridevirtual

Similarity about pivot \(\mathbf p\) (default: old center d_x), then rigid displacement \(\mathbf t\) = translation: \(\mathbf y = \mathbf p + s\,\mathbf R(\mathbf x-\mathbf p) + \mathbf t\). When \(\theta=0\) and \(s=1\), \(\mathbf y = \mathbf x + \mathbf t\) for every point and the center.

Parameters

translation	Rigid translation vector \(\mathbf t\) (added after rotate+scale about \(\mathbf p\))
scale	Uniform scale factor
angle	Rotation angle (radians)
axis	Axis of rotation
rotationPoint	If non-null, use as \(\mathbf p\); if null, use old `d_x` as pivot.

Reimplemented from geom::GeomObject.

Definition at line 3240 of file geomObjects.h.

                                                                                                       {
      // Scale the dimensions
      d_r *= scale;
      d_l *= scale;
 
      const util::Point c0 = d_x;
      d_xBegin = mapSimilarity(d_xBegin, c0, translation, scale, angle, axis, rotationPoint);
      d_xa = util::rotate(d_xa, angle, axis);
      d_x = mapSimilarity(c0, c0, translation, scale, angle, axis, rotationPoint);
    }

References d_l, d_r, d_x, d_xa, d_xBegin, geom::mapSimilarity(), and util::rotate().

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◆ volume()

double geom::Cylinder::volume ( ) const

overridevirtual

Computes the volume (area in 2d, length in 1d) of object.

Returns: Volume Volume of object

Reimplemented from geom::GeomObject.

Definition at line 1662 of file geomObjects.cpp.

                                  {
      return M_PI * d_r * d_r * d_l;
    }

References d_l, and d_r.

Field Documentation

◆ d_l

double geom::Cylinder::d_l

Length.

Definition at line 3154 of file geomObjects.h.

Referenced by boundingRadius(), box(), mesh_gen::buildCylinderOcc(), isInside(), isNear(), isNearBoundary(), operator=(), transform(), and volume().

◆ d_r

double geom::Cylinder::d_r

Radius.

Definition at line 3151 of file geomObjects.h.

Referenced by boundingRadius(), box(), mesh_gen::buildCylinderOcc(), isInside(), isNear(), isNearBoundary(), operator=(), printStr(), transform(), and volume().

◆ d_x

util::Point geom::Cylinder::d_x

Center.

Definition at line 3142 of file geomObjects.h.

Referenced by center(), operator=(), printStr(), and transform().

◆ d_xa

util::Point geom::Cylinder::d_xa

Axis of cylinder (unit vector)

Definition at line 3148 of file geomObjects.h.

Referenced by box(), mesh_gen::buildCylinderOcc(), isInside(), isNear(), isNearBoundary(), operator=(), printStr(), and transform().

◆ d_xBegin

util::Point geom::Cylinder::d_xBegin

Center point of cross-section at the beginning.

Definition at line 3145 of file geomObjects.h.

Referenced by box(), mesh_gen::buildCylinderOcc(), isInside(), isNear(), isNearBoundary(), operator=(), printStr(), and transform().

The documentation for this class was generated from the following files:

/home/user/project/src/geom/geomObjects.h
/home/user/project/src/geom/geomObjects.cpp

Public Member Functions

Data Fields

Detailed Description

Constructor & Destructor Documentation

◆ Cylinder() [1/4]

◆ Cylinder() [2/4]

◆ Cylinder() [3/4]

◆ Cylinder() [4/4]

Member Function Documentation

◆ boundingRadius()

◆ box() [1/2]

◆ box() [2/2]

◆ center()

◆ doesIntersect() [1/2]

◆ doesIntersect() [2/2]

◆ inscribedRadius()

◆ isInside() [1/2]

◆ isInside() [2/2]

◆ isNear() [1/2]

◆ isNear() [2/2]

◆ isNearBoundary()

◆ isOutside() [1/2]

◆ isOutside() [2/2]

◆ operator=()

◆ print() [1/2]

◆ print() [2/2]

◆ printStr()

◆ transform()

◆ volume()

Field Documentation

◆ d_l

◆ d_r

◆ d_x

◆ d_xa

◆ d_xBegin