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SbXfBox3f
Langue: en
Version: 324476 (ubuntu - 08/07/09)
Section: 3 (Bibliothèques de fonctions)
Sommaire
- NAME
- SYNOPSIS
- Detailed Description
- Constructor & Destructor Documentation
- Member Function Documentation
- void SbXfBox3f::setTransform (const SbMatrix & m)
- const SbMatrix & SbXfBox3f::getTransform (void) const
- const SbMatrix & SbXfBox3f::getInverse (void) const
- SbVec3f SbXfBox3f::getCenter (void) const
- void SbXfBox3f::extendBy (const SbVec3f & pt)
- void SbXfBox3f::extendBy (const SbBox3f & bb)
- void SbXfBox3f::extendBy (const SbXfBox3f & bb)
- SbBool SbXfBox3f::intersect (const SbVec3f & pt) const
- SbBool SbXfBox3f::intersect (const SbBox3f & bb) const
- SbBool SbXfBox3f::intersect (const SbXfBox3f & xfbb) const
- void SbXfBox3f::getSpan (const SbVec3f & direction, float & dMin, float & dMax) const
- SbBox3f SbXfBox3f::project (void) const
- void SbXfBox3f::transform (const SbMatrix & m)
- float SbXfBox3f::getVolume (void) const
- void SbXfBox3f::print (FILE * fp) const
- Friends And Related Function Documentation
- Author
NAME
SbXfBox3f -SYNOPSIS
#include <Inventor/SbBox.h>
Inherits SbBox3f.
Detailed Description
The SbXfBox3f class is a 3 dimensional box with floating point coordinates and an attached transformation.
This box class is used by many other classes in Coin for data exchange. It provides storage for two box corners with floating point coordinates, and for a floating point 4x4 transformation matrix.
See also:
- SbBox2d, SbBox2f, SbBox2i32, SbBox2s, SbBox3d, SbBox3f, SbBox3i32, SbBox3s, SbXfBox3d, SbMatrix.
Public Member Functions
SbXfBox3f (void)
SbXfBox3f (const SbVec3f &boxmin, const SbVec3f &boxmax)
SbXfBox3f (const SbBox3f &box)
~SbXfBox3f ()
void setTransform (const SbMatrix &m)
const SbMatrix & getTransform (void) const
const SbMatrix & getInverse (void) const
SbVec3f getCenter (void) const
void extendBy (const SbVec3f &pt)
void extendBy (const SbBox3f &bb)
void extendBy (const SbXfBox3f &bb)
SbBool intersect (const SbVec3f &pt) const
SbBool intersect (const SbBox3f &bb) const
SbBool intersect (const SbXfBox3f &bb) const
void getSpan (const SbVec3f &direction, float &dMin, float &dMax) const
SbBox3f project (void) const
void transform (const SbMatrix &m)
float getVolume (void) const
void print (FILE *file) const
Friends
int operator== (const SbXfBox3f &b1, const SbXfBox3f &b2)
int operator!= (const SbXfBox3f &b1, const SbXfBox3f &b2)
Constructor & Destructor Documentation
SbXfBox3f::SbXfBox3f (void)
The default constructor makes an empty box and identity matrix.
References SbMatrix::makeIdentity().
SbXfBox3f::SbXfBox3f (const SbVec3f & boxmin, const SbVec3f & boxmax)
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.
References SbMatrix::makeIdentity().
SbXfBox3f::SbXfBox3f (const SbBox3f & box)
Constructs a box from the given SbBox3f.
The transformation is set to the identity matrix.
References SbMatrix::makeIdentity().
SbXfBox3f::~SbXfBox3f ()
Default destructor does nothing.
Member Function Documentation
void SbXfBox3f::setTransform (const SbMatrix & m)
Sets the transformation to the given SbMatrix.
Referenced by SoGetBoundingBoxAction::checkResetAfter(), SoGetBoundingBoxAction::checkResetBefore(), extendBy(), and transform().
const SbMatrix & SbXfBox3f::getTransform (void) const
Returns the current transformation matrix.
Referenced by extendBy(), and print().
const SbMatrix & SbXfBox3f::getInverse (void) const
Returns the inverse of the current transformation matrix.
Referenced by extendBy(), and intersect().
SbVec3f SbXfBox3f::getCenter (void) const
Return the transformed center point of the box.
Reimplemented from SbBox3f.
References SbBox3f::getCenter(), and SbMatrix::multVecMatrix().
Referenced by print().
void SbXfBox3f::extendBy (const SbVec3f & pt)
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.
The point is assumed to be in transformed space.
Reimplemented from SbBox3f.
References SbBox3f::extendBy(), getInverse(), SbBox3f::isEmpty(), SbMatrix::makeIdentity(), and SbMatrix::multVecMatrix().
Referenced by SoGetBoundingBoxAction::extendBy().
void SbXfBox3f::extendBy (const SbBox3f & bb)
Extend the boundaries of the box by the given bb parameter. The given box is assumed to be in transformed space.
The two given boxes will be combined in such a way so that the resultant bounding box always has the smallest possible volume. To accomplish this, the transformation on this SbXfBox3f will sometimes be flattened before it's combined with bb.
Reimplemented from SbBox3f.
References SbBox3f::extendBy(), getInverse(), SbBox3f::getMax(), SbBox3f::getMin(), SbBox3f::getVolume(), getVolume(), SbBox3f::isEmpty(), SbMatrix::makeIdentity(), SbMatrix::multVecMatrix(), SoDebugError::postInfo(), SoDebugError::postWarning(), project(), SbBox3f::setBounds(), setTransform(), and SbVec3f::setValue().
void SbXfBox3f::extendBy (const SbXfBox3f & bb)
Extend the boundaries of the box by the given bb parameter.
The given box is assumed to be in transformed space.
Note: is not guaranteed to give an optimal result if used for bbox calculation since the transformation matrix might change. See documentation in SoGetBoundingBoxAction for more details.
References getInverse(), getMax(), getMin(), getTransform(), getVolume(), SbBox3f::isEmpty(), SbMatrix::multRight(), SbMatrix::multVecMatrix(), SoDebugError::postInfo(), SoDebugError::postWarning(), and SbVec3f::setValue().
SbBool SbXfBox3f::intersect (const SbVec3f & pt) const
Check if the given point lies within the boundaries of this box.
The point is assumed to be in transformed space.
Reimplemented from SbBox3f.
References SbBox3f::intersect(), and SbMatrix::multVecMatrix().
Referenced by intersect().
SbBool SbXfBox3f::intersect (const SbBox3f & bb) const
Check if the given box lies wholly or partly within the boundaries of this box.
The given box is assumed to be in transformed space.
Reimplemented from SbBox3f.
References SbBox3f::getMax(), SbBox3f::getMin(), SbMatrix::identity(), SbBox3f::intersect(), SbBox3f::isEmpty(), and SoDebugError::postWarning().
SbBool SbXfBox3f::intersect (const SbXfBox3f & xfbb) const
Check if two transformed boxes intersect.
This function is an extension for Coin, and it is not available in the original SGI Open Inventor v2.1 API.
Since:
- Coin 2.0
References getInverse(), intersect(), and transform().
void SbXfBox3f::getSpan (const SbVec3f & direction, float & dMin, float & 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 from SbBox3f.
References SbBox3f::getSpan(), and project().
SbBox3f SbXfBox3f::project (void) const
Project the SbXfBox3f into a SbBox3f.
This gives the same resulting SbBox3f as doing a SbBox3f::transform() with this transformation matrix as parameter.
References SbBox3f::isEmpty(), and SbBox3f::transform().
Referenced by extendBy(), SoGetBoundingBoxAction::getBoundingBox(), getSpan(), and print().
void SbXfBox3f::transform (const SbMatrix & m)
Overridden from SbBox3f, as the transformations are to be kept separate from the box in the SbXfBox3f class.
Reimplemented from SbBox3f.
References SbMatrix::multRight(), and setTransform().
Referenced by SoGetBoundingBoxAction::extendBy(), and intersect().
float SbXfBox3f::getVolume (void) const
Return box volume. Overridden from parent class to take into account the possibility of scaling in the transformation matrix.
Reimplemented from SbBox3f.
References SbMatrix::det3(), SbBox3f::getVolume(), and SbBox3f::hasVolume().
Referenced by extendBy(), and print().
void SbXfBox3f::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.
Reimplemented from SbBox3f.
References SbBox3f::getBounds(), getCenter(), SbBox3f::getOrigin(), SbBox3f::getSize(), getTransform(), getVolume(), SbBox3f::print(), SbMatrix::print(), SbVec3f::print(), and project().
Friends And Related Function Documentation
int operator== (const SbXfBox3f & b1, const SbXfBox3f & b2) [friend]
Check if b1 and b2 are equal. Return 1 if they are equal, or 0 if they are unequal. Note that the method will do a dumb component by component comparison.
int operator!= (const SbXfBox3f & b1, const SbXfBox3f & b2) [friend]
Check if b1 and b2 are unequal. Return 0 if they are equal, or 1 if they are unequal. See the note on operator==().
Author
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