Menge::Math::OBBShape Class Reference

Oriented bounding box. More...

#include <Geometry2D.h>

Inheritance diagram for Menge::Math::OBBShape:

Public Member Functions
	OBBShape ()
	Default constructor.
	OBBShape (const Vector2 &pivot, const Vector2 &size, float angle)
	Constructor. More...
	OBBShape (const OBBShape &shape)
	Copy constructor. More...
	OBBShape (const OBBShape &shape, const Vector2 &offset)
	Initializes this shape as an translated version of the input shape. More...
OBBShape	operator+ (const Vector2 &pt)
	Construct an offset version of this shape. More...
virtual bool	containsPoint (const Vector2 &pt) const
	Determine if the point is inside the shape based on the instance properties. More...
virtual bool	containsPoint (const Vector2 &pt, const Vector2 &pos) const
	Determine if the point is inside a OBB, centered on the given position. More...
void	set (const Vector2 &pivot, float width, float height, float angle)
	Sets the extent of the OBB. More...
void	setSize (const Vector2 &size)
	Sets the size of the OBB. More...
void	setAngle (float angle)
	Sets the angle of the OBB. More...
Public Member Functions inherited from Menge::Math::Geometry2D
	Geometry2D ()
	Constructor.
virtual	~Geometry2D ()
	Simple destructor.

Protected Attributes
Vector2	_pivot
	The minimum corners of the bounding box (the box is rotated around this point).
Vector2	_size
	The width and height of the box (along its local coordinate system).
Vector2	_halfSize
	The half width and height of the box.
float	_cosTheta
	The cosine of the box's angle of rotation (used for accelerating queries).
float	_sinTheta
	The sine of the box's angle of rotation (used for accelerating queries).

Detailed Description

Oriented bounding box.

Constructor & Destructor Documentation

Menge::Math::OBBShape::OBBShape	(	const Vector2 &	pivot,
		const Vector2 &	size,
		float	angle
	)

Constructor.

Parameters

pivot	The minimum values of the unrotated bounding box along the x- and y-axes, respectively. The bounding box gets rotated around this point.
size	The size of the bounding box along the LOCAL x- and y-axes, respectively.
angle	The angle of rotation (in radians).

Menge::Math::OBBShape::OBBShape

(

const OBBShape &

shape

)

Copy constructor.

Parameters

shape

The shape to copy from.

Menge::Math::OBBShape::OBBShape	(	const OBBShape &	shape,
		const Vector2 &	offset
	)

Initializes this shape as an translated version of the input shape.

Parameters

shape	The shape to copy from.
offset	offset vector from the copied shape

Member Function Documentation

bool Menge::Math::OBBShape::containsPoint ( const Vector2 &  pt ) const

virtual

Determine if the point is inside the shape based on the instance properties.

Parameters

pt	The point to test.

Returns

True if the point is inside the shape, false otherwise.

Implements Menge::Math::Geometry2D.

Reimplemented in Menge::BFSM::OBBCondition.

bool Menge::Math::OBBShape::containsPoint ( const Vector2 &  pt, const Vector2 &  pos  ) const

virtual

Determine if the point is inside a OBB, centered on the given position.

Parameters

pt	The point to test.
pos	The position of the circle.

Returns

True if the point is inside the shape, false otherwise.

Implements Menge::Math::Geometry2D.

OBBShape Menge::Math::OBBShape::operator+

(

const Vector2 &

pt

)

Construct an offset version of this shape.

Parameters

pt	The offset value.

Returns

A new OBBShape offset from this one by the vector pt.

void Menge::Math::OBBShape::set	(	const Vector2 &	pivot,
		float	width,
		float	height,
		float	angle
	)

Sets the extent of the OBB.

Parameters

pivot	The pivot point of the OBB
width	The width of the unrotated box (length along the x-axis).
height	The width of the unrotated box (length along the x-axis).
angle	The angle of rotation (in radians) around the pivot point.

void Menge::Math::OBBShape::setAngle

(

float

angle

)

Sets the angle of the OBB.

The pivot point and size remain unchanged.

Parameters

angle

The angle (in radians) the OBB is rotated around its pivot.

void Menge::Math::OBBShape::setSize ( const Vector2 &  size )

inline

Sets the size of the OBB.

The pivot point and angle remain unchanged.

Parameters

size	The width and height of the box.

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The documentation for this class was generated from the following files:

• src/menge/MengeCore/Math/Geometry2D.h
• src/menge/MengeCore/Math/Geometry2D.cpp