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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. More...
#include <Inventor/SbBox2d.h>
Public Member Functions | |
SbBox2d (void) | |
SbBox2d (double xmin, double ymin, double xmax, double ymax) | |
SbBox2d (const SbVec2d &min, const SbVec2d &max) | |
SbBox2d (const SbBox2f &box) | |
SbBox2d (const SbBox2s &box) | |
SbBox2d (const SbBox2i32 &box) | |
~SbBox2d (void) | |
void | setBounds (double xmin, double ymin, double xmax, double ymax) |
void | setBounds (const SbVec2d &min, const SbVec2d &max) |
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 &min, SbVec2d &max) 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 &x0, double &y0) const |
void | getSize (double &w, double &h) const |
double | getAspectRatio (void) const |
Friends | |
int | operator== (const SbBox2d &b1, const SbBox2d &b2) |
int | operator!= (const SbBox2d &b1, const SbBox2d &b2) |
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.
SbBox2d::SbBox2d | ( | void | ) |
The default constructor makes an empty box.
References makeEmpty().
SbBox2d::SbBox2d | ( | double | xmin, |
double | ymin, | ||
double | xmax, | ||
double | ymax | ||
) |
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.
References setBounds().
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.
References setBounds().
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inlineexplicit |
Constructs a box with coordinates from box, converting the coordinates to floating point double precision values
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inlineexplicit |
Constructs a box with coordinates from box, converting the coordinates to floating point double precision values
|
inlineexplicit |
Constructs a box with coordinates from box, converting the coordinates to floating point double precision values
SbBox2d::~SbBox2d | ( | void | ) |
Destructor.
void SbBox2d::setBounds | ( | double | xmin, |
double | ymin, | ||
double | xmax, | ||
double | ymax | ||
) |
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.
References SoDebugError::postWarning(), and SbVec2d::setValue().
Referenced by SbBox2d().
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.
References SoDebugError::postWarning().
Reset the boundaries of the box with the given box boundaries.
Returns reference to self.
References SbBox2f::getMax(), SbBox2f::getMin(), SbBox2f::isEmpty(), makeEmpty(), and SbVec2d::setValue().
Reset the boundaries of the box with the given box boundaries.
Returns reference to self.
References SbBox2s::getMax(), SbBox2s::getMin(), SbBox2s::isEmpty(), makeEmpty(), and SbVec2d::setValue().
Reset the boundaries of the box with the given box boundaries.
Returns reference to self.
References SbBox2i32::getMax(), SbBox2i32::getMin(), SbBox2i32::isEmpty(), makeEmpty(), and SbVec2d::setValue().
void SbBox2d::getBounds | ( | double & | xmin, |
double & | ymin, | ||
double & | xmax, | ||
double & | ymax | ||
) | const |
Returns the box boundaries.
References SbVec2d::getValue().
Returns the box corner points.
const SbVec2d & SbBox2d::getMin | ( | void | ) | const |
Returns the lower left corner of the box.
Referenced by extendBy(), intersect(), SbBox2f::setBounds(), SbBox2s::setBounds(), and SbBox2i32::setBounds().
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inline |
Returns the lower left corner of the box.
const SbVec2d & SbBox2d::getMax | ( | void | ) | const |
Returns the upper right corner of the box.
Referenced by extendBy(), intersect(), SbBox2f::setBounds(), SbBox2s::setBounds(), and SbBox2i32::setBounds().
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inline |
Returns the upper right corner of the box.
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.
References SbVec2d::setValue().
Referenced by extendBy().
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.
References extendBy(), getMax(), getMin(), and SoDebugError::postWarning().
void SbBox2d::makeEmpty | ( | void | ) |
Marks this as an empty box.
References SbVec2d::setValue().
Referenced by SbBox2d(), and setBounds().
SbBool SbBox2d::isEmpty | ( | void | ) | const |
Check if this has been marked as an empty box.
Referenced by SbBox2f::setBounds(), SbBox2s::setBounds(), and SbBox2i32::setBounds().
SbBool SbBox2d::hasArea | ( | void | ) | const |
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 |
Return the point on the box closest to the given point p.
References getCenter().
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 |
Returns the center point of the box.
Referenced by getClosestPoint().
void SbBox2d::getOrigin | ( | double & | x0, |
double & | y0 | ||
) | const |
Returns the coordinates of the box origin (i.e. the lower left corner).
void SbBox2d::getSize | ( | double & | w, |
double & | h | ||
) | const |
Returns width and height of box.
References SoDebugError::postWarning().
double SbBox2d::getAspectRatio | ( | void | ) | const |
Returns aspect ratio of box, which is defined as box width divided on box height.
References SoDebugError::postWarning().
Copyright © 1998-2007 by Systems in Motion AS. All rights reserved.
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