CBrush Class Reference

Class CBrush: Represents a convex object, supports some CSG operations. More...

#include <Brush.h>

Classes
struct	Helper

Public Member Functions
	CBrush ()
	CBrush (const CBoundingBoxAligned &bounds)
	CBrush: Construct a brush from a bounds object. More...
bool	IsEmpty () const
	IsEmpty: Returns whether the brush is empty. More...
void	Bounds (CBoundingBoxAligned &result) const
	Bounds: Calculate the axis-aligned bounding box for this brush. More...
void	Slice (const CPlane &plane, CBrush &result) const
	Slice: Cut the object along the given plane, resulting in a smaller (or even empty) brush representing the part of the object that lies in front of the plane (as defined by the positive direction of its normal vector). More...
void	Intersect (const CFrustum &frustum, CBrush &result) const
	Intersect: Intersect the brush with the given frustum. More...
void	Render (CShaderProgramPtr &shader) const
	Render the surfaces of the brush as triangles. More...
void	RenderOutline (CShaderProgramPtr &shader) const
	Render the outline of the brush as lines. More...

Private Types
typedef std::vector< CVector3D >	Vertices
typedef std::vector< size_t >	FaceIndices

Private Member Functions
std::vector< CVector3D >	GetVertices () const
	Returns a copy of the vertices in this brush. More...
void	GetFaces (std::vector< std::vector< size_t > > &out) const
	Writes a vector of the faces in this brush to out. More...

Private Attributes
Vertices	m_Vertices
	Collection of unique vertices that make up this shape. More...
FaceIndices	m_Faces
	Holds the face definitions of this brush. More...

Static Private Attributes
static const size_t	NO_VERTEX = ~0u

Friends
class	TestBrush

Detailed Description

Class CBrush: Represents a convex object, supports some CSG operations.

Member Typedef Documentation

typedef std::vector<size_t> CBrush::FaceIndices

private

typedef std::vector<CVector3D> CBrush::Vertices

private

Constructor & Destructor Documentation

CBrush::CBrush ( )

inline

CBrush::CBrush

(

const CBoundingBoxAligned &

bounds

)

CBrush: Construct a brush from a bounds object.

Parameters

bounds

the CBoundingBoxAligned object to construct the brush from.

Member Function Documentation

void CBrush::Bounds

(

CBoundingBoxAligned &

result

)

const

Bounds: Calculate the axis-aligned bounding box for this brush.

Parameters

result

the resulting bounding box is stored here

void CBrush::GetFaces ( std::vector< std::vector< size_t > > &  out ) const

private

Writes a vector of the faces in this brush to out.

Each face is itself a vector, listing the vertex indices that make up the face, starting and ending with the same index. Intended for testing purposes; you should not need to use this method directly.

std::vector< CVector3D > CBrush::GetVertices ( ) const

private

Returns a copy of the vertices in this brush.

Intended for testing purposes; you should not need to use this method directly.

void CBrush::Intersect	(	const CFrustum &	frustum,
		CBrush &	result
	)		const

Intersect: Intersect the brush with the given frustum.

Parameters

frustum	the frustum to intersect with
result	the resulting brush is stored here

bool CBrush::IsEmpty ( ) const

inline

IsEmpty: Returns whether the brush is empty.

Returns

true if the brush is empty, false otherwise

void CBrush::Render

(

CShaderProgramPtr &

shader

)

const

Render the surfaces of the brush as triangles.

void CBrush::RenderOutline

(

CShaderProgramPtr &

shader

)

const

Render the outline of the brush as lines.

void CBrush::Slice	(	const CPlane &	plane,
		CBrush &	result
	)		const

Slice: Cut the object along the given plane, resulting in a smaller (or even empty) brush representing the part of the object that lies in front of the plane (as defined by the positive direction of its normal vector).

Parameters

plane	the slicing plane
result	the resulting brush is stored here

Friends And Related Function Documentation

friend class TestBrush

friend

Member Data Documentation

FaceIndices CBrush::m_Faces

private

Holds the face definitions of this brush.

Each face is a sequence of indices into m_Vertices that starts and ends with the same vertex index, completing a loop through all the vertices that make up the face. This vector holds all the face sequences back-to-back, thus looking something like 'x—xy-----—yz–z' in the general case.

Vertices CBrush::m_Vertices

private

Collection of unique vertices that make up this shape.

const size_t CBrush::NO_VERTEX = ~0u

staticprivate

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

• /var/svn/checkout/source/maths/Brush.h
• /var/svn/checkout/source/maths/Brush.cpp