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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. More...
#include <Inventor/SbBox.h>
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 |
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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 SbXfBox3f &b1, const SbXfBox3f &b2) |
int | operator!= (const SbXfBox3f &b1, const SbXfBox3f &b2) |
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.
SbXfBox3f::SbXfBox3f | ( | void | ) |
The default constructor makes an empty box and identity matrix.
References SbMatrix::makeIdentity().
Referenced by print().
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.
void SbXfBox3f::setTransform | ( | const SbMatrix & | m | ) |
Sets the transformation to the given SbMatrix.
Referenced by SoGetBoundingBoxAction::checkResetAfter(), SoGetBoundingBoxAction::checkResetBefore(), extendBy(), SoMultipleCopy::getBoundingBox(), SoLevelOfDetail::getBoundingBox(), SoVRMLGroup::getBoundingBox(), and transform().
const SbMatrix & SbXfBox3f::getTransform | ( | void | ) | const |
Returns the current transformation matrix.
Referenced by SoIntersectionDetectionAction::apply(), 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.
References SbBox3f::getCenter(), and SbMatrix::multVecMatrix().
Referenced by SoMultipleCopy::getBoundingBox(), and 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.
References SbBox3f::extendBy(), getInverse(), SbBox3f::isEmpty(), SbMatrix::makeIdentity(), and SbMatrix::multVecMatrix().
Referenced by SoGetBoundingBoxAction::extendBy(), and SoMultipleCopy::getBoundingBox().
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.
References SbBox3f::extendBy(), getInverse(), SbBox3f::getMax(), SbBox3f::getMin(), getVolume(), SbBox3f::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 getTransform(), 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.
References SbBox3f::extendBy(), SbBox3f::intersect(), SbMatrix::multVecMatrix(), SbVec3f::normalize(), and SbVec3f::setValue().
Referenced by SoIntersectionDetectionAction::apply(), and 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.
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.
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.
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 SoIntersectionDetectionAction::apply(), extendBy(), SoGetBoundingBoxAction::getBoundingBox(), getSpan(), SoShadowGroup::notify(), 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.
References SbMatrix::multRight(), and setTransform().
Referenced by SoGetBoundingBoxAction::extendBy(), SoMultipleCopy::getBoundingBox(), intersect(), and SoShadowGroup::notify().
float SbXfBox3f::getVolume | ( | void | ) | const |
Return box volume. Overridden from parent class to take into account the possibility of scaling in the transformation matrix.
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.
References SbMatrix::det4(), SbBox3f::getBounds(), getCenter(), SbBox3f::getOrigin(), SbBox3f::getSize(), getTransform(), getVolume(), SbMatrix::inverse(), SoDebugError::postWarning(), SbVec3f::print(), SbBox3f::print(), SbMatrix::print(), project(), and SbXfBox3f().
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.
Check if b1 and b2 are unequal. Return 0 if they are equal, or 1 if they are unequal. See the note on operator==().
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