vtkBoundingBox Class Reference

Fast, simple class for representing and operating on 3D bounds. More...

#include <vtkBoundingBox.h>

Public Member Functions
	vtkBoundingBox (const vtkBoundingBox &bbox)
	Copy constructor.
vtkBoundingBox &	operator= (const vtkBoundingBox &bbox)
	Assignment Operator.
void	AddBox (const vtkBoundingBox &bbox)
	Change the bounding box to be the union of itself and the specified bbox.
void	AddBounds (const double bounds[6])
	Adjust the bounding box so it contains the specified bounds (defined by the VTK representation (xmin,xmax, ymin,ymax, zmin,zmax).
bool	IsSubsetOf (const vtkBoundingBox &bbox) const
	Returns true if this instance is entirely contained by bbox.
int	IntersectBox (const vtkBoundingBox &bbox)
	Intersect this box with bbox.
int	Intersects (const vtkBoundingBox &bbox) const
	Returns 1 if the boxes intersect else returns 0.
bool	IntersectPlane (double origin[3], double normal[3])
	Intersect this box with the half space defined by plane.
bool	IntersectsSphere (double center[3], double squaredRadius) const
	Intersect this box with a sphere.
bool	IntersectsLine (const double p1[3], const double p2[3]) const
	Returns true if any part of segment [p1,p2] lies inside the bounding box, as well as on its boundaries.
int	ComputeInnerDimension () const
	Returns the inner dimension of the bounding box.
int	Contains (const vtkBoundingBox &bbox) const
	Returns 1 if the min and max points of bbox are contained within the bounds of the specified box, else returns 0.
double	GetBound (int i) const
	Return the ith bounds of the box (defined by VTK style).
void	GetCorner (int corner, double p[3]) const
	Get the ith corner of the bounding box.
void	GetCenter (double center[3]) const
	Get the center of the bounding box.
void	GetLengths (double lengths[3]) const
	Get the length of each side of the box.
double	GetLength (int i) const
	Return the length of the bounding box in the ith direction.
double	GetMaxLength () const
	Return the maximum length of the box.
vtkIdType	ComputeDivisions (vtkIdType totalBins, double bounds[6], int divs[3]) const
	Compute the number of divisions in the x-y-z directions given a psoitive, target number of total bins (i.e., product of divisions in the x-y-z directions).
void	Reset ()
	Returns the box to its initialized state.
	vtkBoundingBox (const double bounds[6])
	Construct a bounding box with the min point set to VTK_DOUBLE_MAX and the max point set to VTK_DOUBLE_MIN.
	vtkBoundingBox (double xMin, double xMax, double yMin, double yMax, double zMin, double zMax)
	Construct a bounding box with the min point set to VTK_DOUBLE_MAX and the max point set to VTK_DOUBLE_MIN.
bool	operator== (const vtkBoundingBox &bbox) const
	Equality operator.
bool	operator!= (const vtkBoundingBox &bbox) const
	Equality operator.
void	SetBounds (const double bounds[6])
	Set the bounds explicitly of the box (using the VTK convention for representing a bounding box).
void	SetBounds (double xMin, double xMax, double yMin, double yMax, double zMin, double zMax)
	Set the bounds explicitly of the box (using the VTK convention for representing a bounding box).
void	SetMinPoint (double x, double y, double z)
	Set the minimum point of the bounding box - if the min point is greater than the max point then the max point will also be changed.
void	SetMinPoint (double p[3])
	Set the minimum point of the bounding box - if the min point is greater than the max point then the max point will also be changed.
void	SetMaxPoint (double x, double y, double z)
	Set the maximum point of the bounding box - if the max point is less than the min point then the min point will also be changed.
void	SetMaxPoint (double p[3])
	Set the maximum point of the bounding box - if the max point is less than the min point then the min point will also be changed.
void	AddPoint (double p[3])
	Change bounding box so it includes the point p.
void	AddPoint (double px, double py, double pz)
	Change bounding box so it includes the point p.
void	GetBounds (double bounds[6]) const
	Get the bounds of the box (defined by VTK style).
void	GetBounds (double &xMin, double &xMax, double &yMin, double &yMax, double &zMin, double &zMax) const
	Get the bounds of the box (defined by VTK style).
const double *	GetMinPoint () const
	Get the minimum point of the bounding box.
void	GetMinPoint (double &x, double &y, double &z) const
	Get the minimum point of the bounding box.
void	GetMinPoint (double x[3]) const
	Get the minimum point of the bounding box.
const double *	GetMaxPoint () const
	Get the maximum point of the bounding box.
void	GetMaxPoint (double &x, double &y, double &z) const
	Get the maximum point of the bounding box.
void	GetMaxPoint (double x[3]) const
	Get the maximum point of the bounding box.
vtkTypeBool	ContainsPoint (const double p[3]) const
	Returns 1 if the point is contained in the box else 0.
vtkTypeBool	ContainsPoint (double px, double py, double pz) const
	Returns 1 if the point is contained in the box else 0.
template<class PointT >
bool	ContainsPoint (const PointT &p) const
	Returns 1 if the point is contained in the box else 0.
double	GetDiagonalLength2 () const
	Return the length of the diagonal.
double	GetDiagonalLength () const
	Return the length of the diagonal.
void	Inflate (double delta)
	Expand the bounding box.
void	Inflate (double deltaX, double deltaY, double deltaZ)
	Expand the bounding box.
void	Inflate ()
	Expand the bounding box.
void	InflateSlice (double delta)
	Expand the bounding box.
void	Scale (double s[3])
	Scale each dimension of the box by some given factor.
void	Scale (double sx, double sy, double sz)
	Scale each dimension of the box by some given factor.
void	ScaleAboutCenter (double s)
	Scale each dimension of the box by some given factor, with the origin of the bounding box the center of the scaling.
void	ScaleAboutCenter (double s[3])
	Scale each dimension of the box by some given factor, with the origin of the bounding box the center of the scaling.
void	ScaleAboutCenter (double sx, double sy, double sz)
	Scale each dimension of the box by some given factor, with the origin of the bounding box the center of the scaling.

Static Public Member Functions
static bool	ContainsLine (const double x[3], const double s[3], const double lineEnd[3], double &t, double xInt[3], int &plane)
	A specialized, performant method to compute the containment of a finite line emanating from the center of a bounding box.
static void	ClampDivisions (vtkIdType targetBins, int divs[3])
	Clamp the number of divisions to be less than or equal to a target number of bins, and the divs[i] >= 1.
static void	ComputeLocalBounds (vtkPoints *points, double u[3], double v[3], double w[3], double outputBounds[6])
	Compute local bounds.

Protected Attributes
double	MinPnt [3]
double	MaxPnt [3]
void	ComputeBounds (vtkPoints *pts)
	Compute the bounding box from an array of vtkPoints.
void	ComputeBounds (vtkPoints *pts, unsigned char *ptUses)
	Compute the bounding box from an array of vtkPoints.
static void	ComputeBounds (vtkPoints *pts, double bounds[6])
	Compute the bounding box from an array of vtkPoints.
static void	ComputeBounds (vtkPoints *pts, const unsigned char *ptUses, double bounds[6])
	Compute the bounding box from an array of vtkPoints.
static void	ComputeBounds (vtkPoints *pts, const std::atomic< unsigned char > *ptUses, double bounds[6])
	Compute the bounding box from an array of vtkPoints.
static void	ComputeBounds (vtkPoints *pts, const long long *ptIds, long long numPointIds, double bounds[6])
	Compute the bounding box from an array of vtkPoints.
static void	ComputeBounds (vtkPoints *pts, const long *ptIds, long numPointIds, double bounds[6])
	Compute the bounding box from an array of vtkPoints.
static void	ComputeBounds (vtkPoints *pts, const int *ptIds, int numPointIds, double bounds[6])
	Compute the bounding box from an array of vtkPoints.
int	IsValid () const
	Returns 1 if the bounds have been set and 0 if the box is in its initialized state which is an inverted state.
static int	IsValid (const double bounds[6])
	Returns 1 if the bounds have been set and 0 if the box is in its initialized state which is an inverted state.

Detailed Description

Fast, simple class for representing and operating on 3D bounds.

vtkBoundingBox maintains and performs operations on a 3D axis aligned bounding box. It is very light weight and many of the member functions are in-lined so it is very fast. It is not derived from vtkObject so it can be allocated on the stack.

See also

vtkBox

Online Examples:

BoundingBox

BoundingBoxIntersection

Tests:

vtkBoundingBox (Tests)

Definition at line 57 of file vtkBoundingBox.h.

Constructor & Destructor Documentation

vtkBoundingBox() [1/4]

vtkBoundingBox::vtkBoundingBox ( )

inline

Construct a bounding box with the min point set to VTK_DOUBLE_MAX and the max point set to VTK_DOUBLE_MIN.

Definition at line 502 of file vtkBoundingBox.h.

vtkBoundingBox() [2/4]

vtkBoundingBox::vtkBoundingBox ( const double  bounds[6] )

inline

Construct a bounding box with the min point set to VTK_DOUBLE_MAX and the max point set to VTK_DOUBLE_MIN.

Definition at line 507 of file vtkBoundingBox.h.

vtkBoundingBox() [3/4]

vtkBoundingBox::vtkBoundingBox ( double  xMin, double  xMax, double  yMin, double  yMax, double  zMin, double  zMax  )

inline

Construct a bounding box with the min point set to VTK_DOUBLE_MAX and the max point set to VTK_DOUBLE_MIN.

Definition at line 513 of file vtkBoundingBox.h.

vtkBoundingBox() [4/4]

vtkBoundingBox::vtkBoundingBox ( const vtkBoundingBox &  bbox )

inline

Copy constructor.

Definition at line 520 of file vtkBoundingBox.h.

Member Function Documentation

operator=()

vtkBoundingBox & vtkBoundingBox::operator= ( const vtkBoundingBox &  bbox )

inline

Assignment Operator.

Definition at line 531 of file vtkBoundingBox.h.

operator==()

bool vtkBoundingBox::operator== ( const vtkBoundingBox &  bbox ) const

inline

Equality operator.

Definition at line 543 of file vtkBoundingBox.h.

operator!=()

bool vtkBoundingBox::operator!= ( const vtkBoundingBox &  bbox ) const

inline

Equality operator.

Definition at line 550 of file vtkBoundingBox.h.

SetBounds() [1/2]

void vtkBoundingBox::SetBounds ( const double  bounds[6] )

inline

Set the bounds explicitly of the box (using the VTK convention for representing a bounding box).

Returns 1 if the box was changed else 0.

Definition at line 492 of file vtkBoundingBox.h.

SetBounds() [2/2]

void vtkBoundingBox::SetBounds	(	double	xMin,
		double	xMax,
		double	yMin,
		double	yMax,
		double	zMin,
		double	zMax
	)

Set the bounds explicitly of the box (using the VTK convention for representing a bounding box).

Returns 1 if the box was changed else 0.

ComputeBounds() [1/8]

static void vtkBoundingBox::ComputeBounds ( vtkPoints *  pts, double  bounds[6]  )

static

Compute the bounding box from an array of vtkPoints.

It uses a fast (i.e., threaded) path when possible. The second signature (with point uses) only considers points with ptUses[i] != 0 in the bounds calculation. The third signature uses point ids. The non-static ComputeBounds() methods update the current bounds of an instance of this class.

ComputeBounds() [2/8]

static void vtkBoundingBox::ComputeBounds ( vtkPoints *  pts, const unsigned char *  ptUses, double  bounds[6]  )

static

Compute the bounding box from an array of vtkPoints.

It uses a fast (i.e., threaded) path when possible. The second signature (with point uses) only considers points with ptUses[i] != 0 in the bounds calculation. The third signature uses point ids. The non-static ComputeBounds() methods update the current bounds of an instance of this class.

ComputeBounds() [3/8]

static void vtkBoundingBox::ComputeBounds ( vtkPoints *  pts, const std::atomic< unsigned char > *  ptUses, double  bounds[6]  )

static

Compute the bounding box from an array of vtkPoints.

It uses a fast (i.e., threaded) path when possible. The second signature (with point uses) only considers points with ptUses[i] != 0 in the bounds calculation. The third signature uses point ids. The non-static ComputeBounds() methods update the current bounds of an instance of this class.

ComputeBounds() [4/8]

static void vtkBoundingBox::ComputeBounds ( vtkPoints *  pts, const long long *  ptIds, long long  numPointIds, double  bounds[6]  )

static

Compute the bounding box from an array of vtkPoints.

It uses a fast (i.e., threaded) path when possible. The second signature (with point uses) only considers points with ptUses[i] != 0 in the bounds calculation. The third signature uses point ids. The non-static ComputeBounds() methods update the current bounds of an instance of this class.

ComputeBounds() [5/8]

static void vtkBoundingBox::ComputeBounds ( vtkPoints *  pts, const long *  ptIds, long  numPointIds, double  bounds[6]  )

static

Compute the bounding box from an array of vtkPoints.

It uses a fast (i.e., threaded) path when possible. The second signature (with point uses) only considers points with ptUses[i] != 0 in the bounds calculation. The third signature uses point ids. The non-static ComputeBounds() methods update the current bounds of an instance of this class.

ComputeBounds() [6/8]

static void vtkBoundingBox::ComputeBounds ( vtkPoints *  pts, const int *  ptIds, int  numPointIds, double  bounds[6]  )

static

Compute the bounding box from an array of vtkPoints.

It uses a fast (i.e., threaded) path when possible. The second signature (with point uses) only considers points with ptUses[i] != 0 in the bounds calculation. The third signature uses point ids. The non-static ComputeBounds() methods update the current bounds of an instance of this class.

ComputeBounds() [7/8]

void vtkBoundingBox::ComputeBounds ( vtkPoints *  pts )

inline

Compute the bounding box from an array of vtkPoints.

It uses a fast (i.e., threaded) path when possible. The second signature (with point uses) only considers points with ptUses[i] != 0 in the bounds calculation. The third signature uses point ids. The non-static ComputeBounds() methods update the current bounds of an instance of this class.

Definition at line 113 of file vtkBoundingBox.h.

ComputeBounds() [8/8]

void vtkBoundingBox::ComputeBounds ( vtkPoints *  pts, unsigned char *  ptUses  )

inline

Compute the bounding box from an array of vtkPoints.

It uses a fast (i.e., threaded) path when possible. The second signature (with point uses) only considers points with ptUses[i] != 0 in the bounds calculation. The third signature uses point ids. The non-static ComputeBounds() methods update the current bounds of an instance of this class.

Definition at line 124 of file vtkBoundingBox.h.

ComputeLocalBounds()

static void vtkBoundingBox::ComputeLocalBounds ( vtkPoints *  points, double  u[3], double  v[3], double  w[3], double  outputBounds[6]  )

static

Compute local bounds.

Not as fast as vtkPoints.getBounds() if u, v, w form a natural basis.

SetMinPoint() [1/2]

void vtkBoundingBox::SetMinPoint	(	double	x,
		double	y,
		double	z
	)

Set the minimum point of the bounding box - if the min point is greater than the max point then the max point will also be changed.

SetMinPoint() [2/2]

void vtkBoundingBox::SetMinPoint ( double  p[3] )

inline

Set the minimum point of the bounding box - if the min point is greater than the max point then the max point will also be changed.

Definition at line 555 of file vtkBoundingBox.h.

SetMaxPoint() [1/2]

void vtkBoundingBox::SetMaxPoint	(	double	x,
		double	y,
		double	z
	)

Set the maximum point of the bounding box - if the max point is less than the min point then the min point will also be changed.

SetMaxPoint() [2/2]

void vtkBoundingBox::SetMaxPoint ( double  p[3] )

inline

Set the maximum point of the bounding box - if the max point is less than the min point then the min point will also be changed.

Definition at line 560 of file vtkBoundingBox.h.

IsValid() [1/2]

int vtkBoundingBox::IsValid ( ) const

inline

Returns 1 if the bounds have been set and 0 if the box is in its initialized state which is an inverted state.

Definition at line 453 of file vtkBoundingBox.h.

IsValid() [2/2]

int vtkBoundingBox::IsValid ( const double  bounds[6] )

inlinestatic

Returns 1 if the bounds have been set and 0 if the box is in its initialized state which is an inverted state.

Definition at line 459 of file vtkBoundingBox.h.

AddPoint() [1/2]

void vtkBoundingBox::AddPoint

(

double

p[3]

)

Change bounding box so it includes the point p.

Note that the bounding box may have 0 volume if its bounds were just initialized.

AddPoint() [2/2]

void vtkBoundingBox::AddPoint	(	double	px,
		double	py,
		double	pz
	)

Change bounding box so it includes the point p.

Note that the bounding box may have 0 volume if its bounds were just initialized.

AddBox()

void vtkBoundingBox::AddBox

(

const vtkBoundingBox &

bbox

)

Change the bounding box to be the union of itself and the specified bbox.

AddBounds()

void vtkBoundingBox::AddBounds

(

const double

bounds[6]

)

Adjust the bounding box so it contains the specified bounds (defined by the VTK representation (xmin,xmax, ymin,ymax, zmin,zmax).

IsSubsetOf()

bool vtkBoundingBox::IsSubsetOf ( const vtkBoundingBox &  bbox ) const

inline

Returns true if this instance is entirely contained by bbox.

Definition at line 483 of file vtkBoundingBox.h.

IntersectBox()

int vtkBoundingBox::IntersectBox

(

const vtkBoundingBox &

bbox

)

Intersect this box with bbox.

The method returns 1 if both boxes are valid and they do have overlap else it will return 0. If 0 is returned the box has not been modified.

Intersects()

int vtkBoundingBox::Intersects

(

const vtkBoundingBox &

bbox

)

const

Returns 1 if the boxes intersect else returns 0.

IntersectPlane()

bool vtkBoundingBox::IntersectPlane	(	double	origin[3],
		double	normal[3]
	)

Intersect this box with the half space defined by plane.

Returns true if there is intersection—which implies that the box has been modified Returns false otherwise.

IntersectsSphere()

bool vtkBoundingBox::IntersectsSphere	(	double	center[3],
		double	squaredRadius
	)		const

Intersect this box with a sphere.

Parameters involve the center of the sphere and the squared radius.

IntersectsLine()

bool vtkBoundingBox::IntersectsLine	(	const double	p1[3],
		const double	p2[3]
	)		const

Returns true if any part of segment [p1,p2] lies inside the bounding box, as well as on its boundaries.

It returns false otherwise.

ComputeInnerDimension()

int vtkBoundingBox::ComputeInnerDimension

(

)

const

Returns the inner dimension of the bounding box.

Contains()

int vtkBoundingBox::Contains

(

const vtkBoundingBox &

bbox

)

const

Returns 1 if the min and max points of bbox are contained within the bounds of the specified box, else returns 0.

ContainsLine()

static bool vtkBoundingBox::ContainsLine ( const double  x[3], const double  s[3], const double  lineEnd[3], double &  t, double  xInt[3], int &  plane  )

static

A specialized, performant method to compute the containment of a finite line emanating from the center of a bounding box.

The method returns true if the box contains the line defined by (x,lineEnd); and false if the line intersects the box (i.e., the line passes through the boundary of the box). The box is defined by specifying a point at the center of the box x[3] with sides lengths s[3] (in the x-y-z directions). If an intersection occurs (i.e., the containment return value is false), then the function returns the parametric coordinate of intersection t, the position of intersection xInt[3], and the plane of intersection where integers (0, 1, 2, 3, 4, 5) stand for the (xmin, xmax, ymin, ymax, zmin, zmax) box planes respectively. (If no intersection occurs, i.e., the line is contained, then the line (x,lineEnd) is contained within the box with x-y-z lengths s[3] centered around the point x, and the values of t, xInt, and plane are undefined.)

GetBounds() [1/2]

void vtkBoundingBox::GetBounds ( double  bounds[6] ) const

inline

Get the bounds of the box (defined by VTK style).

Definition at line 497 of file vtkBoundingBox.h.

GetBounds() [2/2]

void vtkBoundingBox::GetBounds ( double &  xMin, double &  xMax, double &  yMin, double &  yMax, double &  zMin, double &  zMax  ) const

inline

Get the bounds of the box (defined by VTK style).

Definition at line 410 of file vtkBoundingBox.h.

GetBound()

double vtkBoundingBox::GetBound ( int  i ) const

inline

Return the ith bounds of the box (defined by VTK style).

Definition at line 421 of file vtkBoundingBox.h.

GetMinPoint() [1/3]

const double * vtkBoundingBox::GetMinPoint ( ) const

inline

Get the minimum point of the bounding box.

Definition at line 429 of file vtkBoundingBox.h.

GetMinPoint() [2/3]

void vtkBoundingBox::GetMinPoint ( double &  x, double &  y, double &  z  ) const

inline

Get the minimum point of the bounding box.

Definition at line 565 of file vtkBoundingBox.h.

GetMinPoint() [3/3]

void vtkBoundingBox::GetMinPoint ( double  x[3] ) const

inline

Get the minimum point of the bounding box.

Definition at line 434 of file vtkBoundingBox.h.

GetMaxPoint() [1/3]

const double * vtkBoundingBox::GetMaxPoint ( ) const

inline

Get the maximum point of the bounding box.

Definition at line 441 of file vtkBoundingBox.h.

GetMaxPoint() [2/3]

void vtkBoundingBox::GetMaxPoint ( double &  x, double &  y, double &  z  ) const

inline

Get the maximum point of the bounding box.

Definition at line 572 of file vtkBoundingBox.h.

GetMaxPoint() [3/3]

void vtkBoundingBox::GetMaxPoint ( double  x[3] ) const

inline

Get the maximum point of the bounding box.

Definition at line 446 of file vtkBoundingBox.h.

GetCorner()

void vtkBoundingBox::GetCorner ( int  corner, double  p[3]  ) const

inline

Get the ith corner of the bounding box.

The points are ordered with i, then j, then k increasing.

Definition at line 607 of file vtkBoundingBox.h.

ContainsPoint() [1/3]

vtkTypeBool vtkBoundingBox::ContainsPoint ( const double  p[3] ) const

inline

Returns 1 if the point is contained in the box else 0.

Definition at line 596 of file vtkBoundingBox.h.

ContainsPoint() [2/3]

vtkTypeBool vtkBoundingBox::ContainsPoint ( double  px, double  py, double  pz  ) const

inline

Returns 1 if the point is contained in the box else 0.

Definition at line 579 of file vtkBoundingBox.h.

ContainsPoint() [3/3]

template<class PointT >

bool vtkBoundingBox::ContainsPoint ( const PointT &  p ) const

inline

Returns 1 if the point is contained in the box else 0.

Definition at line 602 of file vtkBoundingBox.h.

GetCenter()

void vtkBoundingBox::GetCenter ( double  center[3] ) const

inline

Get the center of the bounding box.

Definition at line 476 of file vtkBoundingBox.h.

GetLengths()

void vtkBoundingBox::GetLengths ( double  lengths[3] ) const

inline

Get the length of each side of the box.

Definition at line 469 of file vtkBoundingBox.h.

GetLength()

double vtkBoundingBox::GetLength ( int  i ) const

inline

Return the length of the bounding box in the ith direction.

Definition at line 464 of file vtkBoundingBox.h.

GetMaxLength()

double vtkBoundingBox::GetMaxLength

(

)

const

Return the maximum length of the box.

GetDiagonalLength2()

double vtkBoundingBox::GetDiagonalLength2

(

)

const

Return the length of the diagonal.

Precondition

not_empty: this->IsValid()

GetDiagonalLength()

double vtkBoundingBox::GetDiagonalLength

(

)

const

Return the length of the diagonal.

Precondition

not_empty: this->IsValid()

Inflate() [1/3]

void vtkBoundingBox::Inflate

(

double

delta

)

Expand the bounding box.

Inflate(delta) expands by delta on each side, the box will grow by 2*delta in x, y, and z. Inflate(dx,dy,dz) expands by the given amounts in each of the x, y, z directions. Inflate() expands the bounds so that it has non-zero volume. Sides that are inflated are adjusted by 1% of the longest edge. Or if an edge is zero length, the bounding box is inflated by 1 unit in that direction. Finally, InflateSlice(delta) will expand any side of the bounding box by +/- delta if that side has length <2*delta (i.e., it is a slice as measured by the user-specified delta)).

Inflate() [2/3]

void vtkBoundingBox::Inflate	(	double	deltaX,
		double	deltaY,
		double	deltaZ
	)

Expand the bounding box.

Inflate(delta) expands by delta on each side, the box will grow by 2*delta in x, y, and z. Inflate(dx,dy,dz) expands by the given amounts in each of the x, y, z directions. Inflate() expands the bounds so that it has non-zero volume. Sides that are inflated are adjusted by 1% of the longest edge. Or if an edge is zero length, the bounding box is inflated by 1 unit in that direction. Finally, InflateSlice(delta) will expand any side of the bounding box by +/- delta if that side has length <2*delta (i.e., it is a slice as measured by the user-specified delta)).

Inflate() [3/3]

void vtkBoundingBox::Inflate

(

)

Expand the bounding box.

Inflate(delta) expands by delta on each side, the box will grow by 2*delta in x, y, and z. Inflate(dx,dy,dz) expands by the given amounts in each of the x, y, z directions. Inflate() expands the bounds so that it has non-zero volume. Sides that are inflated are adjusted by 1% of the longest edge. Or if an edge is zero length, the bounding box is inflated by 1 unit in that direction. Finally, InflateSlice(delta) will expand any side of the bounding box by +/- delta if that side has length <2*delta (i.e., it is a slice as measured by the user-specified delta)).

InflateSlice()

void vtkBoundingBox::InflateSlice

(

double

delta

)

Expand the bounding box.

Inflate(delta) expands by delta on each side, the box will grow by 2*delta in x, y, and z. Inflate(dx,dy,dz) expands by the given amounts in each of the x, y, z directions. Inflate() expands the bounds so that it has non-zero volume. Sides that are inflated are adjusted by 1% of the longest edge. Or if an edge is zero length, the bounding box is inflated by 1 unit in that direction. Finally, InflateSlice(delta) will expand any side of the bounding box by +/- delta if that side has length <2*delta (i.e., it is a slice as measured by the user-specified delta)).

Scale() [1/2]

void vtkBoundingBox::Scale

(

double

s[3]

)

Scale each dimension of the box by some given factor.

If the box is not valid, it stays unchanged. If the scalar factor is negative, bounds are flipped: for example, if (xMin,xMax)=(-2,4) and sx=-3, (xMin,xMax) becomes (-12,6).

Scale() [2/2]

void vtkBoundingBox::Scale	(	double	sx,
		double	sy,
		double	sz
	)

Scale each dimension of the box by some given factor.

If the box is not valid, it stays unchanged. If the scalar factor is negative, bounds are flipped: for example, if (xMin,xMax)=(-2,4) and sx=-3, (xMin,xMax) becomes (-12,6).

ScaleAboutCenter() [1/3]

void vtkBoundingBox::ScaleAboutCenter

(

double

s

)

Scale each dimension of the box by some given factor, with the origin of the bounding box the center of the scaling.

If the box is not valid, it is not changed.

ScaleAboutCenter() [2/3]

void vtkBoundingBox::ScaleAboutCenter

(

double

s[3]

)

Scale each dimension of the box by some given factor, with the origin of the bounding box the center of the scaling.

If the box is not valid, it is not changed.

ScaleAboutCenter() [3/3]

void vtkBoundingBox::ScaleAboutCenter	(	double	sx,
		double	sy,
		double	sz
	)

Scale each dimension of the box by some given factor, with the origin of the bounding box the center of the scaling.

If the box is not valid, it is not changed.

ComputeDivisions()

vtkIdType vtkBoundingBox::ComputeDivisions	(	vtkIdType	totalBins,
		double	bounds[6],
		int	divs[3]
	)		const

Compute the number of divisions in the x-y-z directions given a psoitive, target number of total bins (i.e., product of divisions in the x-y-z directions).

The computation is done in such a way as to create near cuboid bins. Also note that the returned bounds may be different than the bounds defined in this class, as the bounds in the x-y-z directions can never be <= 0. Note that the total number of divisions (divs[0]*divs[1]*divs[2]) will be less than or equal to the target number of bins (as long as totalBins>=1).

ClampDivisions()

static void vtkBoundingBox::ClampDivisions ( vtkIdType  targetBins, int  divs[3]  )

static

Clamp the number of divisions to be less than or equal to a target number of bins, and the divs[i] >= 1.

Reset()

void vtkBoundingBox::Reset ( )

inline

Returns the box to its initialized state.

Definition at line 404 of file vtkBoundingBox.h.

Member Data Documentation

MinPnt

double vtkBoundingBox::MinPnt[3]

protected

Definition at line 401 of file vtkBoundingBox.h.

MaxPnt

double vtkBoundingBox::MaxPnt[3]

protected

Definition at line 401 of file vtkBoundingBox.h.

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

• Common/DataModel/vtkBoundingBox.h