man SbBox2s (Fonctions bibliothèques) -

NAME

SbBox2s -

SYNOPSIS



#include <Inventor/SbBox.h>

Detailed Description

The SbBox2s class is a 2 dimensional box with short integer coordinates.

This box class is used by other classes in Coin for data exchange. It provides storage for two box corners with short integer coordinates, which is among other things useful for representing screen or canvas areas in absolute window coordinates.

See also: SbBox2f, SbBox3f

Public Member Functions

SbBox2s (void)

SbBox2s (short xmin, short ymin, short xmax, short ymax)

SbBox2s (const SbVec2s &boxmin, const SbVec2s &boxmax)

~SbBox2s (void)

const SbVec2s & getMin (void) const

const SbVec2s & getMax (void) const

void extendBy (const SbVec2s &point)

void extendBy (const SbBox2s &box)

SbBool intersect (const SbVec2s &point) const

SbBool intersect (const SbBox2s &box) const

void setBounds (short xmin, short ymin, short xmax, short ymax)

void setBounds (const SbVec2s &boxmin, const SbVec2s &boxmax)

void getBounds (short &xmin, short &ymin, short &xmax, short &ymax) const

void getBounds (SbVec2s &boxmin, SbVec2s &boxmax) const

void getOrigin (short &originX, short &originY) const

void getSize (short &sizeX, short &sizeY) const

float getAspectRatio (void) const

void makeEmpty (void)

Friends

int operator== (const SbBox2s &b1, const SbBox2s &b2)

int operator!= (const SbBox2s &b1, const SbBox2s &b2)

Constructor & Destructor Documentation

SbBox2s::SbBox2s (void)

The default constructor makes an empty box.

SbBox2s::SbBox2s (short xmin, short ymin, short xmax, short ymax)

Constructs a box with the given corner coordinates.

xmin should be less than xmax and ymin should be less than ymax if you want to make a valid box.

SbBox2s::SbBox2s (const SbVec2s & boxmin, const SbVec2s & 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.

SbBox2s::~SbBox2s (void)

Default destructor does nothing.

Member Function Documentation

const SbVec2s & SbBox2s::getMin (void) const

Returns the minimum point. This should usually be the lower left corner point of the box.

See also: getOrigin(), getMax().

const SbVec2s & SbBox2s::getMax (void) const

Returns the maximum point. This should usually be the upper right corner point of the box.

See also: getMin().

void SbBox2s::extendBy (const SbVec2s & point)

Extend the boundaries of the box by the given point, i.e. make the point fit inside the box if it isn't already within it.

void SbBox2s::extendBy (const SbBox2s & box)

Extend the boundaries of the box by the given box parameter. This is equal to calling extendBy() twice with the corner points.

SbBool SbBox2s::intersect (const SbVec2s & point) const

Check if the given point lies within the boundaries of this box.

SbBool SbBox2s::intersect (const SbBox2s & box) const

Check if box lies wholly or partly within the boundaries of this box.

void SbBox2s::setBounds (short xmin, short ymin, short xmax, short 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.

See also: getBounds().

void SbBox2s::setBounds (const SbVec2s & boxmin, const SbVec2s & boxmax)

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.

See also: getBounds().

void SbBox2s::getBounds (short & xmin, short & ymin, short & xmax, short & ymax) const

Returns the box boundary coordinates.

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

void SbBox2s::getBounds (SbVec2s & boxmin, SbVec2s & boxmax) const

Returns the box corner points.

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

void SbBox2s::getOrigin (short & originX, short & originY) const

Returns the coordinates of the box origin (i.e. the lower left corner).

See also: getMin().

void SbBox2s::getSize (short & sizeX, short & sizeY) const

Returns width and height of box.

float SbBox2s::getAspectRatio (void) const

Returns aspect ratio of box, which is defined as box width divided on box height.

void SbBox2s::makeEmpty (void)

Marks this as an empty box.

See also: isEmpty().

Friends And Related Function Documentation

int operator== (const SbBox2s & b1, const SbBox2s & b2) [friend]

Check b1 and b2 for equality.

int operator!= (const SbBox2s & b1, const SbBox2s & b2) [friend]

Check b1 and b2 for inequality.

Author

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