SbBox2f(3)

NAME
SbBox2f - The SbBox2f class is a 2 dimensional box with floating point corner coordinates.

This box class is used by many other classes in Coin for data exchange and storage. It provides two box corners with floating point coordinates, which is among other things useful for representing screen or canvas dimensions in normalized coordinates.

SYNOPSIS

#include <Inventor/SbBox.h>

  Public Member Functions
SbBox2f (void)
SbBox2f (float xmin, float ymin, float xmax, float ymax)
SbBox2f (const SbVec2f &minpoint, const SbVec2f &maxpoint)
SbBox2f (const SbBox2d &box)
SbBox2f (const SbBox2s &box)
SbBox2f (const SbBox2i32 &box)
SbBox2f & setBounds (float xmin, float ymin, float xmax, float ymax)
SbBox2f & setBounds (const SbVec2f &minpoint, const SbVec2f &maxpoint)
SbBox2f & setBounds (const SbBox2d &box)
SbBox2f & setBounds (const SbBox2s &box)
SbBox2f & setBounds (const SbBox2i32 &box)
void getBounds (float &xmin, float &ymin, float &xmax, float &ymax) const
void getBounds (SbVec2f &minpoint, SbVec2f &maxpoint) const
const SbVec2f & getMin (void) const
SbVec2f & getMin (void)
const SbVec2f & getMax (void) const
SbVec2f & getMax (void)
void extendBy (const SbVec2f &point)
void extendBy (const SbBox2f &box)
void makeEmpty (void)
SbBool isEmpty (void) const
SbBool hasArea (void) const
SbBool intersect (const SbVec2f &point) const
SbBool intersect (const SbBox2f &box) const
SbVec2f getClosestPoint (const SbVec2f &point) const
SbVec2f getCenter (void) const
void getOrigin (float &originX, float &originY) const
void getSize (float &sizeX, float &sizeY) const
float getAspectRatio (void) const

  Protected Attributes
SbVec2f minpt
SbVec2f maxpt

  Related Functions
(Note that these are not member functions.)
int operator== (const SbBox2f &b1, const SbBox2f &b2)
int operator!= (const SbBox2f &b1, const SbBox2f &b2)

Detailed Description

The SbBox2f class is a 2 dimensional box with floating point corner coordinates.

This box class is used by many other classes in Coin for data exchange and storage. It provides two box corners with floating point coordinates, which is among other things useful for representing screen or canvas dimensions in normalized coordinates.

See also:
    SbBox2s, SbBox2d, SbBox3s, SbBox3f, SbBox3d, SbXfBox3f.

Constructor & Destructor Documentation

  SbBox2f::SbBox2f (void) [inline]
The default constructor makes an empty box.

  SbBox2f::SbBox2f (float xmin, float ymin, float xmax, float 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.

  SbBox2f::SbBox2f (const SbVec2f & min, const SbVec2f & 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

  SbBox2f & SbBox2f::setBounds (float xmin, float ymin, float xmax, float 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().

  SbBox2f & SbBox2f::setBounds (const SbVec2f & min, const SbVec2f & 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().

  SbBox2f & SbBox2f::setBounds (const SbBox2d & box)
Reset the boundaries of the box to the boundaries of the given box.

Returns reference to self.

See also:
    getBounds()

  SbBox2f & SbBox2f::setBounds (const SbBox2s & box)
Reset the boundaries of the box to the boundaries of the given box.

Returns reference to self.

See also:
    getBounds()

  SbBox2f & SbBox2f::setBounds (const SbBox2i32 & box)
Reset the boundaries of the box to the boundaries of the given box.

Returns reference to self.

See also:
    getBounds()

  void SbBox2f::getBounds (float & xmin, float & ymin, float & xmax, float & ymax) const [inline]
Returns the box boundaries.

See also:
    setBounds(), getMin(), getMax().

  void SbBox2f::getBounds (SbVec2f & min, SbVec2f & max) const [inline]
Returns the box corner points.

See also:
    setBounds(), getMin(), getMax().

  const SbVec2f & SbBox2f::getMin (void) const [inline]
Returns the lower left corner of the box.

See also:
    getOrigin(), getMax().

  SbVec2f & SbBox2f::getMin (void) [inline]
Returns a modifiable reference ot the lower left corner of the box.

See also:
    getOrigin(), getMax().

  const SbVec2f & SbBox2f::getMax (void) const [inline]
Returns the upper right corner of the box.

See also:
    getMin().

  void SbBox2f::extendBy (const SbVec2f & 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 SbBox2f::extendBy (const SbBox2f & 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 SbBox2f::makeEmpty (void)
Marks this as an empty box.

See also:
    isEmpty().

  SbBool SbBox2f::isEmpty (void) const [inline]
Check if this has been marked as an empty box.

See also:
    makeEmpty().

  SbBool SbBox2f::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 SbBox2f::intersect (const SbVec2f & point) const
Check if point lies within the boundaries of this box.

  SbBool SbBox2f::intersect (const SbBox2f & box) const
Check if box lies wholly or partly within the boundaries of this box.

  SbVec2f SbBox2f::getClosestPoint (const SbVec2f & p) const
Return the point on the box closest to the given point p.

  SbVec2f SbBox2f::getCenter (void) const [inline]
Returns the center point of the box.

  void SbBox2f::getOrigin (float & originX, float & originY) const [inline]
Returns the coordinates of the box origin (i.e. the lower left corner).

See also:
    getMin().

  void SbBox2f::getSize (float & sizeX, float & sizeY) const [inline]
Returns width and height of box.

  float SbBox2f::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 SbBox2f & b1, const SbBox2f & b2) [related]
Check b1 and b2 for equality.

  int operator!= (const SbBox2f & b1, const SbBox2f & b2) [related]
Check b1 and b2 for inequality.

Author

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