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SbBox3f.3coin2

NAME

SbBox3f -

The SbBox3f 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.

SYNOPSIS

#include <Inventor/SbBox.h>

Inherited by SbXfBox3f.

Public Member Functions

SbBox3f (void)

SbBox3f (const float minx, const float miny, const float minz, const float maxx, const float maxy, const float maxz)

SbBox3f (const SbVec3f &min, const SbVec3f &max)

SbBox3f (const SbBox3d &box)

SbBox3f (const SbBox3s &box)

SbBox3f (const SbBox3i32 &box)

~SbBox3f ()

void setBounds (const float minx, const float miny, const float minz, const float maxx, const float maxy, const float maxz)

void setBounds (const SbVec3f &min, const SbVec3f &max)

SbBox3f & setBounds (const SbBox3d &box)

SbBox3f & setBounds (const SbBox3s &box)

SbBox3f & setBounds (const SbBox3i32 &box)

void getBounds (float &minx, float &miny, float &minz, float &maxx, float &maxy, float &maxz) const

void getBounds (SbVec3f &min, SbVec3f &max) const

const SbVec3f & getMin (void) const

SbVec3f & getMin (void)

const SbVec3f & getMax (void) const

SbVec3f & getMax (void)

void extendBy (const SbVec3f &point)

void extendBy (const SbBox3f &box)

void transform (const SbMatrix &matrix)

void makeEmpty (void)

SbBool isEmpty (void) const

SbBool hasVolume (void) const

float getVolume (void) const

SbBool intersect (const SbVec3f &point) const

SbBool intersect (const SbBox3f &box) const

SbVec3f getClosestPoint (const SbVec3f &point) const

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

SbVec3f getCenter (void) const

void getOrigin (float &x0, float &y0, float &z0) const

void getSize (float &dx, float &dy, float &dz) const

void getSpan (const SbVec3f &dir, float &dmin, float &dmax) const

void print (FILE *file) const

Friends

int operator== (const SbBox3f &b1, const SbBox3f &b2)

int operator!= (const SbBox3f &b1, const SbBox3f &b2)

Detailed Description

The SbBox3f 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:

SbBox2d, SbBox2f, SbBox2i32, SbBox2s, SbBox3d, SbBox3i32, SbBox3s, SbXfBox3d, SbXfBox3f

Constructor & Destructor Documentation

SbBox3f::SbBox3f (void)The default constructor makes an empty box.

References makeEmpty().

SbBox3f::SbBox3f (const float minx, const float miny, const float minz, const float maxx, const float maxy, const float maxz)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.

References setBounds().

SbBox3f::SbBox3f (const SbVec3f & minval, const SbVec3f & maxval)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.

SbBox3f::SbBox3f (const SbBox3d & box) [inline, explicit]Constructs a box with coordinates from box, converting the coordinates to floating point precision values

Since:

Coin-2.5

SbBox3f::SbBox3f (const SbBox3s & box) [inline, explicit]Constructs a box with coordinates from box, converting the coordinates to floating point precision values

Since:

Coin-2.5

SbBox3f::SbBox3f (const SbBox3i32 & box) [inline, explicit]Constructs a box with coordinates from box, converting the coordinates to floating point precision values

Since:

Coin-2.5

SbBox3f::~SbBox3f (void)Default destructor does nothing.

Member Function Documentation

void SbBox3f::setBounds (const float minx, const float miny, const float minz, const float maxx, const float maxy, const float maxz)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.

See also:

getBounds().

References SoDebugError::postWarning(), and SbVec3f::setValue().

Referenced by SoText3::computeBBox(), SoSphere::computeBBox(), SoCylinder::computeBBox(), SoCube::computeBBox(), SoCone::computeBBox(), SoAsciiText::computeBBox(), SbXfBox3f::extendBy(), extendBy(), SbBox3f(), and transform().

void SbBox3f::setBounds (const SbVec3f & minval, const SbVec3f & maxval)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.

See also:

getBounds().

References SoDebugError::postWarning().

SbBox3f & SbBox3f::setBounds (const SbBox3d & box)Reset the boundaries to the boundaries of the given box.

Returns reference to self.

See also:

getBounds().

Since:

Coin-2.5

References SbBox3d::getMax(), SbBox3d::getMin(), SbBox3d::isEmpty(), makeEmpty(), and SbVec3f::setValue().

SbBox3f & SbBox3f::setBounds (const SbBox3s & box)Reset the boundaries to the boundaries of the given box.

Returns reference to self.

See also:

getBounds().

Since:

Coin-2.5

References SbBox3s::getMax(), SbBox3s::getMin(), SbBox3s::isEmpty(), makeEmpty(), and SbVec3f::setValue().

SbBox3f & SbBox3f::setBounds (const SbBox3i32 & box)Reset the boundaries to the boundaries of the given box.

Returns reference to self.

See also:

getBounds().

Since:

Coin-2.5

References SbBox3i32::getMax(), SbBox3i32::getMin(), SbBox3i32::isEmpty(), makeEmpty(), and SbVec3f::setValue().

void SbBox3f::getBounds (float & minx, float & miny, float & minz, float & maxx, float & maxy, float & maxz) constReturns the box boundaries.

See also:

setBounds().

References SbVec3f::getValue().

Referenced by SoShape::getScreenSize(), SbXfBox3f::print(), and print().

void SbBox3f::getBounds (SbVec3f & minobj, SbVec3f & maxobj) constReturns the box corner points.

See also:

setBounds().

const SbVec3f & SbBox3f::getMin (void) constReturns the minimum point. This should usually be the lower left corner point of the box.

See also:

getOrigin(), getMax().

Referenced by SoText3::computeBBox(), SbXfBox3f::extendBy(), SbBSPTree::findClosest(), SoShape::GLRenderBoundingBox(), SoRayPickAction::intersect(), SbXfBox3f::intersect(), SbViewVolume::intersect(), SbBox3s::setBounds(), SbBox3i32::setBounds(), SbBox3d::setBounds(), and SoCamera::viewAll().

SbVec3f & SbBox3f::getMin (void)Returns a modifiable reference the minimum point.

const SbVec3f & SbBox3f::getMax (void) constReturns the maximum point. This should usually be the upper right corner point of the box.

See also:

getMin().

Referenced by SoText3::computeBBox(), SbXfBox3f::extendBy(), SbBSPTree::findClosest(), SoShape::GLRenderBoundingBox(), SoRayPickAction::intersect(), SbXfBox3f::intersect(), SbViewVolume::intersect(), SbBox3s::setBounds(), SbBox3i32::setBounds(), SbBox3d::setBounds(), and SoCamera::viewAll().

SbVec3f & SbBox3f::getMax (void)Returns a modifiable reference the maximum point.

void SbBox3f::extendBy (const SbVec3f & 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 SbXfBox3f.

References isEmpty(), setBounds(), and SbVec3f::setValue().

Referenced by SoWWWInline::addBoundingBoxChild(), SbBSPTree::addPoint(), SoText3::computeBBox(), SoNurbsSurface::computeBBox(), SoNurbsCurve::computeBBox(), SoIndexedShape::computeBBox(), SoIndexedNurbsSurface::computeBBox(), SoIndexedNurbsCurve::computeBBox(), SoImage::computeBBox(), SoAsciiText::computeBBox(), SoNonIndexedShape::computeCoordBBox(), SbXfBox3f::extendBy(), extendBy(), SbViewVolume::intersect(), and transform().

void SbBox3f::extendBy (const SbBox3f & 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 SbXfBox3f.

References extendBy(), isEmpty(), and SoDebugError::postWarning().

void SbBox3f::transform (const SbMatrix & matrix)Transform the box by the matrix, and change its boundaries to contain the transformed box.

Doesn't touch illegal/empty boxes.

Reimplemented in SbXfBox3f.

References extendBy(), isEmpty(), SbMatrix::multVecMatrix(), SoDebugError::postWarning(), setBounds(), and SbVec3f::setValue().

Referenced by SbProjector::findVanishingDistance(), and SbXfBox3f::project().

void SbBox3f::makeEmpty (void)Marks this as an empty box.

See also:

isEmpty().

References SbVec3f::setValue().

Referenced by SoGetBoundingBoxAction::beginTraversal(), SoGetBoundingBoxAction::checkResetAfter(), SoGetBoundingBoxAction::checkResetBefore(), SbBSPTree::clear(), SoNurbsSurface::computeBBox(), SoNurbsCurve::computeBBox(), SoIndexedNurbsSurface::computeBBox(), SoIndexedNurbsCurve::computeBBox(), SoImage::computeBBox(), SoSeparator::getBoundingBox(), SoResetTransform::getBoundingBox(), SoMultipleCopy::getBoundingBox(), SoLevelOfDetail::getBoundingBox(), SbBox3f(), and setBounds().

SbBool SbBox3f::isEmpty (void) constCheck if this has been marked as an empty box.

See also:

makeEmpty().

Referenced by SbSphere::circumscribe(), SoIndexedShape::computeBBox(), SoSeparator::cullTest(), SoGetBoundingBoxAction::extendBy(), SbXfBox3f::extendBy(), extendBy(), SoShape::getBoundingBox(), SoSeparator::getBoundingBox(), SoMultipleCopy::getBoundingBox(), SoLevelOfDetail::getBoundingBox(), SoArray::getBoundingBox(), getCenter(), getSize(), SbXfBox3f::intersect(), SbXfBox3f::project(), SbBox3s::setBounds(), SbBox3i32::setBounds(), SbBox3d::setBounds(), transform(), SoSurroundScale::updateMySurroundParams(), SoCamera::viewAll(), SoPerspectiveCamera::viewBoundingBox(), SoOrthographicCamera::viewBoundingBox(), and SoFrustumCamera::viewBoundingBox().

SbBool SbBox3f::hasVolume (void) constCheck if the box has been correctly specified and by that virtue has volume.

Referenced by SbXfBox3f::getVolume(), and getVolume().

float SbBox3f::getVolume (void) constCheck if the box has 'positive' volume, i.e. the lower left corner is actually lower and more left than the maximum point.

Reimplemented in SbXfBox3f.

References hasVolume().

Referenced by SbXfBox3f::extendBy().

SbBool SbBox3f::intersect (const SbVec3f & point) constCheck if the given point lies within the boundaries of this box.

Reimplemented in SbXfBox3f.

SbBool SbBox3f::intersect (const SbBox3f & box) constCheck if the given box lies wholly or partly within the boundaries of this box.

Reimplemented in SbXfBox3f.

SbVec3f SbBox3f::getClosestPoint (const SbVec3f & point) constReturn the point on the box closest to the given point.

References getCenter().

SbBool SbBox3f::outside (const SbMatrix & mvp, int & cullbits) constCheck 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.

References SbMatrix::multVecMatrix().

SbVec3f SbBox3f::getCenter (void) constReturns the center point of the box.

Reimplemented in SbXfBox3f.

References isEmpty(), and SoDebugError::postWarning().

Referenced by SoWWWInline::addBoundingBoxChild(), SbSphere::circumscribe(), SoText3::computeBBox(), SoImage::computeBBox(), SoAsciiText::computeBBox(), getClosestPoint(), SoClipPlaneManip::setValue(), SoSurroundScale::updateMySurroundParams(), SoPerspectiveCamera::viewBoundingBox(), SoOrthographicCamera::viewBoundingBox(), and SoFrustumCamera::viewBoundingBox().

void SbBox3f::getOrigin (float & x0, float & y0, float & z0) constReturns the coordinates of the box origin (i.e. the lower left corner).

See also:

getMin().

References SbVec3f::getValue().

Referenced by SbXfBox3f::print().

void SbBox3f::getSize (float & dx, float & dy, float & dz) constReturns width, height and depth of box.

References isEmpty(), and SoDebugError::postWarning().

Referenced by SoWWWInline::addBoundingBoxChild(), SbSphere::circumscribe(), SbXfBox3f::print(), SoClipPlaneManip::setValue(), and SoSurroundScale::updateMySurroundParams().

void SbBox3f::getSpan (const SbVec3f & dir, float & dmin, float & dmax) constFind 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 SbXfBox3f.

References SbVec3f::dot(), SbVec3f::normalize(), SoDebugError::postWarning(), and SbVec3f::setValue().

Referenced by SbXfBox3f::getSpan().

void SbBox3f::print (FILE * fp) constDump the state of this object to the file stream. Only works in debug version of library, method does nothing in an optimized compile.

Reimplemented in SbXfBox3f.

References getBounds(), and SbVec3f::print().

Referenced by SbXfBox3f::print().

Author

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