NAME
SbBox2d -
The SbBox2d class is a 2 dimensional box with double precision corner
coordinates.
This box class is used by many other classes in Coin for data exchange
and storage. It provides two box corners with double precision
coordinates, which is among other things useful for representing screen
or canvas dimensions in normalized coordinates.
SYNOPSIS
#include <Inventor/SbBox2d.h>
Public Member Functions
SbBox2d (void)
SbBox2d (double xmin, double ymin, double xmax, double ymax)
SbBox2d (const SbVec2d &minpoint, const SbVec2d &maxpoint)
SbBox2d (const SbBox2f &box)
SbBox2d (const SbBox2s &box)
SbBox2d (const SbBox2i32 &box)
SbBox2d & setBounds (double xmin, double ymin, double xmax, double
ymax)
SbBox2d & setBounds (const SbVec2d &minpoint, const SbVec2d &maxpoint)
SbBox2d & setBounds (const SbBox2f &box)
SbBox2d & setBounds (const SbBox2s &box)
SbBox2d & setBounds (const SbBox2i32 &box)
void getBounds (double &xmin, double &ymin, double &xmax, double &ymax)
const
void getBounds (SbVec2d &minpoint, SbVec2d &maxpoint) const
const SbVec2d & getMin (void) const
SbVec2d & getMin (void)
const SbVec2d & getMax (void) const
SbVec2d & getMax (void)
void extendBy (const SbVec2d &point)
void extendBy (const SbBox2d &box)
void makeEmpty (void)
SbBool isEmpty (void) const
SbBool hasArea (void) const
SbBool intersect (const SbVec2d &point) const
SbBool intersect (const SbBox2d &box) const
SbVec2d getClosestPoint (const SbVec2d &p) const
SbBool findIntersection (const SbVec2d &a, const SbVec2d &b, SbVec2d
&ia, SbVec2d &ib) const
SbVec2d getCenter (void) const
void getOrigin (double &originX, double &originY) const
void getSize (double &sizeX, double &sizeY) const
double getAspectRatio (void) const
Related Functions
(Note that these are not member functions.)
int operator== (const SbBox2d &b1, const SbBox2d &b2)
int operator!= (const SbBox2d &b1, const SbBox2d &b2)
Detailed Description
The SbBox2d class is a 2 dimensional box with double precision corner
coordinates.
This box class is used by many other classes in Coin for data exchange
and storage. It provides two box corners with double precision
coordinates, which is among other things useful for representing screen
or canvas dimensions in normalized coordinates.
This class is a Coin extension.
See also:
SbBox2s, SbBox2f, SbBox3s, SbBox3f, SbBox3d, SbXfBox3f.
Since:
Coin 2.0
TGS Inventor 2.6
Constructor & Destructor Documentation
SbBox2d::SbBox2d (void) [inline] The default constructor makes an empty
box.
SbBox2d::SbBox2d (double xmin, double ymin, double xmax, double ymax)
[inline] Constructs a box with the given corners.
xmin should be less than xmax and ymin should be less than ymax if you
want to make a valid box.
SbBox2d::SbBox2d (const SbVec2d & min, const SbVec2d & max) [inline]
Constructs a box with the given lower left and upper right corners.
The coordinates of min should be less than the coordinates of max if
you want to make a valid box.
Member Function Documentation
SbBox2d & SbBox2d::setBounds (double xmin, double ymin, double xmax, double
ymax) [inline] Reset the boundaries of the box.
xmin should be less than xmax and ymin should be less than ymax if you
want to make a valid box.
Returns reference to self.
See also:
getBounds().
SbBox2d & SbBox2d::setBounds (const SbVec2d & min, const SbVec2d & max)
[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().
SbBox2d & SbBox2d::setBounds (const SbBox2f & box) Reset the boundaries of
the box with the given box boundaries.
Returns reference to self.
See also:
getBounds()
SbBox2d & SbBox2d::setBounds (const SbBox2s & box) Reset the boundaries of
the box with the given box boundaries.
Returns reference to self.
See also:
getBounds()
SbBox2d & SbBox2d::setBounds (const SbBox2i32 & box) Reset the boundaries
of the box with the given box boundaries.
Returns reference to self.
See also:
getBounds()
void SbBox2d::getBounds (double & xmin, double & ymin, double & xmax,
double & ymax) const [inline] Returns the box boundaries.
See also:
setBounds(), getMin(), getMax().
void SbBox2d::getBounds (SbVec2d & min, SbVec2d & max) const [inline]
Returns the box min and max corner points.
See also:
setBounds(), getMin(), getMax().
const SbVec2d & SbBox2d::getMin (void) const [inline] Returns the lower
left corner of the box.
See also:
getOrigin(), getMax().
SbVec2d & SbBox2d::getMin (void) [inline] Returns the lower left corner of
the box.
See also:
getOrigin(), getMax().
const SbVec2d & SbBox2d::getMax (void) const [inline] Returns the upper
right corner of the box.
See also:
getMin().
SbVec2d & SbBox2d::getMax (void) [inline] Returns the upper right corner of
the box.
See also:
getMin().
void SbBox2d::extendBy (const SbVec2d & point) Extend the boundaries of the
box by the given point, i.e. make the box fit around the point if it
isn’t already situated within it.
void SbBox2d::extendBy (const SbBox2d & box) Extend the boundaries of the
box by the given box parameter. This is equal to calling the above
method twice with the corner points.
void SbBox2d::makeEmpty (void) Marks this as an empty box.
See also:
isEmpty().
SbBool SbBox2d::isEmpty (void) const [inline] Check if this has been marked
as an empty box.
See also:
makeEmpty().
SbBool SbBox2d::hasArea (void) const [inline] Check if the box has
’positive’ area, i.e. the lower left corner is actually lower and more
to the left than the other corner point.
SbBool SbBox2d::intersect (const SbVec2d & point) const Check if point lies
within the boundaries of this box.
SbBool SbBox2d::intersect (const SbBox2d & box) const Check if box lies
wholly or partly within the boundaries of this box.
SbVec2d SbBox2d::getClosestPoint (const SbVec2d & p) const Return the point
on the box closest to the given point p.
SbBool SbBox2d::findIntersection (const SbVec2d & a, const SbVec2d & b,
SbVec2d & ia, SbVec2d & ib) const Check if a a line from a to b
intersects the box, and return the coordinates of the union line in ia
and ib.
This function is a Coin extension.
SbVec2d SbBox2d::getCenter (void) const [inline] Returns the center point
of the box.
void SbBox2d::getOrigin (double & originX, double & originY) const [inline]
Returns the coordinates of the box origin (i.e. the lower left corner).
See also:
getMin().
void SbBox2d::getSize (double & sizeX, double & sizeY) const [inline]
Returns width and height of box.
double SbBox2d::getAspectRatio (void) const [inline] Returns aspect ratio
of box, which is defined as box width divided on box height.
Friends And Related Function Documentation
int operator== (const SbBox2d & b1, const SbBox2d & b2) [related] Check b1
and b2 for equality.
int operator!= (const SbBox2d & b1, const SbBox2d & b2) [related] Check b1
and b2 for inequality.
Author
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