SbBox3d(3) The SbBox3d class is an abstraction for an axis aligned 3 dimensional box.

SYNOPSIS


#include <Inventor/SbBox3d.h>

Inherited by SbXfBox3d.

Public Member Functions


SbBox3d (void)

SbBox3d (double xmin, double ymin, double zmin, double xmax, double ymax, double zmax)

SbBox3d (const SbVec3d &minpoint, const SbVec3d &maxpoint)

SbBox3d (const SbBox3f &box)

SbBox3d (const SbBox3s &box)

SbBox3d (const SbBox3i32 &box)

SbBox3d & setBounds (double xmin, double ymin, double zmin, double xmax, double ymax, double zmax)

SbBox3d & setBounds (const SbVec3d &minpoint, const SbVec3d &maxpoint)

SbBox3d & setBounds (const SbBox3f &box)

SbBox3d & setBounds (const SbBox3s &box)

SbBox3d & setBounds (const SbBox3i32 &box)

void getBounds (double &xmin, double &ymin, double &zmin, double &xmax, double &ymax, double &zmax) const

void getBounds (SbVec3d &minpoint, SbVec3d &maxpoint) const

const SbVec3d & getMin (void) const

SbVec3d & getMin (void)

const SbVec3d & getMax (void) const

SbVec3d & getMax (void)

void extendBy (const SbVec3d &pt)

void extendBy (const SbBox3d &box)

void transform (const SbDPMatrix &matrix)

void makeEmpty (void)

SbBool isEmpty (void) const

SbBool hasVolume (void) const

double getVolume (void) const

SbBool intersect (const SbVec3d &point) const

SbBool intersect (const SbBox3d &box) const

SbVec3d getClosestPoint (const SbVec3d &point) const

SbBool outside (const SbDPMatrix &mvp, int &cullbits) const

SbVec3d getCenter (void) const

void getOrigin (double &origoX, double &origoY, double &origoZ) const

void getSize (double &sizeX, double &sizeY, double &sizeZ) const

SbVec3d getSize (void) const

void getSpan (const SbVec3d &dir, double &dmin, double &dmax) const

void print (FILE *file) const

Protected Attributes


SbVec3d minpt

SbVec3d maxpt

Related Functions

(Note that these are not member functions.)
int operator== (const SbBox3d &b1, const SbBox3d &b2)

int operator!= (const SbBox3d &b1, const SbBox3d &b2)

Detailed Description

The SbBox3d class is an abstraction for an axis aligned 3 dimensional box.

This box abstraction class is used by other entities in the Coin library for data exchange and storage. It provides a representation of the defining corners of a box in 3D space, with the sides aligned with the 3 principal axes.

See also:

SbBox2s, SbBox2f, SbBox2d, SbBox3s, SbBox3f, SbXfBox3f.

Constructor & Destructor Documentation

SbBox3d::SbBox3d (void) [inline]

The default constructor makes an empty box.

SbBox3d::SbBox3d (doubleminx, doubleminy, doubleminz, doublemaxx, doublemaxy, doublemaxz) [inline]

Constructs a box with the given corners.

minx should be less than maxx, miny should be less than maxy and minz should be less than maxz if you want to make a valid box.

SbBox3d::SbBox3d (const SbVec3d &minval, const SbVec3d &maxval) [inline]

Constructs a box with the given corners.

The coordinates of min should be less than the coordinates of max if you want to make a valid box.

Member Function Documentation

SbBox3d & SbBox3d::setBounds (doublexmin, doubleymin, doublezmin, doublexmax, doubleymax, doublezmax) [inline]

Reset the boundaries of the box.

minx should be less than maxx, miny should be less than maxy and minz should be less than maxz if you want to make a valid box.

Returns reference to self.

See also:

getBounds().

SbBox3d & SbBox3d::setBounds (const SbVec3d &minval, const SbVec3d &maxval) [inline]

Reset the boundaries of the box with the given corners.

The coordinates of min should be less than the coordinates of max if you want to make a valid box.

Returns reference to self.

See also:

getBounds().

SbBox3d & SbBox3d::setBounds (const SbBox3f &box)

Reset the boundaries to the boundaries of the given box.

Returns reference to self.

See also:

setBounds()

SbBox3d & SbBox3d::setBounds (const SbBox3s &box)

Reset the boundaries to the boundaries of the given box.

Returns reference to self.

See also:

setBounds()

SbBox3d & SbBox3d::setBounds (const SbBox3i32 &box)

Reset the boundaries to the boundaries of the given box.

Returns reference to self.

See also:

setBounds()

void SbBox3d::getBounds (double &minx, double &miny, double &minz, double &maxx, double &maxy, double &maxz) const [inline]

Returns the box boundaries.

See also:

setBounds().

void SbBox3d::getBounds (SbVec3d &minobj, SbVec3d &maxobj) const [inline]

Returns the box corner points.

See also:

setBounds().

const SbVec3d & SbBox3d::getMin (void) const [inline]

Returns the minimum point. This should usually be the lower left corner point of the box.

See also:

getOrigin(), getMax().

SbVec3d & SbBox3d::getMin (void) [inline]

Returns a modifiable reference the minimum point.

const SbVec3d & SbBox3d::getMax (void) const [inline]

Returns the maximum point. This should usually be the upper right corner point of the box.

See also:

getMin().

SbVec3d & SbBox3d::getMax (void) [inline]

Returns a modifiable reference the maximum point.

void SbBox3d::extendBy (const SbVec3d &point)

Extend the boundaries of the box by the given point, i.e. make the point fit inside the box if it isn't already so.

Reimplemented in SbXfBox3d.

void SbBox3d::extendBy (const SbBox3d &box)

Extend the boundaries of the box by the given box parameter. This is equal to calling extendBy() twice with the corner points.

Reimplemented in SbXfBox3d.

void SbBox3d::transform (const SbDPMatrix &matrix)

Transform the box by the matrix, and change its boundaries to contain the transformed box.

Doesn't touch illegal/empty boxes.

Reimplemented in SbXfBox3d.

void SbBox3d::makeEmpty (void)

Marks this as an empty box.

See also:

isEmpty().

SbBool SbBox3d::isEmpty (void) const [inline]

Check if this has been marked as an empty box.

See also:

makeEmpty().

SbBool SbBox3d::hasVolume (void) const [inline]

Check if the box has been correctly specified and by that virtue has volume.

double SbBox3d::getVolume (void) const [inline]

Check if the box has 'positive' volume, i.e. the lower left corner is actually lower and more left than the maximum point.

Reimplemented in SbXfBox3d.

SbBool SbBox3d::intersect (const SbVec3d &point) const

Check if the given point lies within the boundaries of this box.

Reimplemented in SbXfBox3d.

SbBool SbBox3d::intersect (const SbBox3d &box) const

Check if the given box lies wholly or partly within the boundaries of this box.

Reimplemented in SbXfBox3d.

SbVec3d SbBox3d::getClosestPoint (const SbVec3d &point) const

Return the point on the box closest to the given point.

SbBool SbBox3d::outside (const SbDPMatrix &mvp, int &cullbits) const

Check if the box is outside the view volume defined by the mvp matrix. Sets cullbits according to which planes we're inside or outside. Bit 0 (0x1) is cleared when box is completely inside left and right clipping planes. Bit 1 (0x2) is cleared when box is inside top and bottom clipping planes. Bit 2 (0x4) is cleared when box is inside near and far clipping planes.

Returns TRUE if box is completely outside one of the clipping planes. FALSE otherwise.

SbVec3d SbBox3d::getCenter (void) const [inline]

Returns the center point of the box.

Reimplemented in SbXfBox3d.

void SbBox3d::getOrigin (double &originX, double &originY, double &originZ) const [inline]

Returns the coordinates of the box origin (i.e. the lower left corner).

See also:

getMin().

void SbBox3d::getSize (double &sizeX, double &sizeY, double &sizeZ) const [inline]

Returns width, height and depth of box.

SbVec3d SbBox3d::getSize (void) const [inline]

Returns width, height and depth of box as a 3D vector.

Since:

Coin 3.0

void SbBox3d::getSpan (const SbVec3d &dir, double &dmin, double &dmax) const

Find the span of the box in the given direction (i.e. how much room in the given direction the box needs). The distance is returned as the minimum and maximum distance from origo to the closest and furthest plane defined by the direction vector and each of the box' corners. The difference between these values gives the span.

Reimplemented in SbXfBox3d.

void SbBox3d::print (FILE *fp) const

Dump the state of this object to the file stream. Only works in debug version of library, method does nothing in an optimized compile.

Friends And Related Function Documentation

int operator== (const SbBox3d &b1, const SbBox3d &b2) [related]

Check b1 and b2 for equality.

int operator!= (const SbBox3d &b1, const SbBox3d &b2) [related]

Check b1 and b2 for inequality.

Author

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