used to load in an alias wave front obj format file and draw using open gl has been completly re-written to use boost::spirit parser, most of this code is a modified version of the OBJReader class from the cortex-vfx lib framework here http://code.google.com/p/cortex-vfx/ More...

#include <Obj.h>

Inheritance diagram for ngl::Obj:

Collaboration diagram for ngl::Obj:

Public Member Functions
	Obj () noexcept
	default constructor More...

	Obj (const std::string &_fname, bool _calcBB=true) noexcept
	constructor to load an objfile as a parameter More...

	Obj (const std::string &_fname, const std::string &_texName, bool _calcBB=true) noexcept
	constructor to load an objfile as a parameter More...

	Obj (const char _fname, const char _texName, bool _calcBB=true) noexcept

bool	load (const std::string &_fname, bool _calcBB=true) noexcept
	Method to load the file in. More...

void	save (const std::string &_fname) const noexcept
	method to save the obj More...

Public Member Functions inherited from ngl::AbstractMesh
	AbstractMesh () noexcept
	default ctor must be called from the child class so our dtor is called More...

virtual	~AbstractMesh () noexcept
	destructor this will clear out all the vert data and the vbo if created More...

void	drawBBox () const noexcept
	method to draw the bounding box More...

void	draw () const noexcept
	draw method to draw the obj as a VBO. The VBO first needs to be created using the CreateVBO method More...

void	loadTexture (const std::string &_fname) noexcept
	load int a texture and set it as the active texture of the Obj More...

void	scale (Real _sx, Real _sy, Real _sz) noexcept
	scale the obj by multiplying the actual vertex values by sx,sy and sz More...

void	calcDimensions () noexcept
	a method to set the BBox and center More...

void	calcBoundingSphere () noexcept
	a method to caluculate the bounding Sphere will set m_sphereCenter and m_sphereRadius More...

void	writeToRibSubdiv (RibExport &_ribFile) const noexcept

virtual void	createVAO () noexcept

unsigned int	getTextureID () const noexcept
	get the texture id More...

Real *	mapVAOVerts () noexcept
	map the VBO vertex data More...

void	unMapVAO () noexcept
	unmap the VBO based More...

const std::vector< IndexRef > &	getIndices () noexcept
	get a pointer to the indices used to represent the VBO data, this is used in the clip class when re-ordering the clip data values More...

void	saveNCCABinaryMesh (const std::string &_fname) noexcept
	save the mesh as NCCA Binary VBO format basically this format is the processed binary vbo mesh data as as packed by the CreateVBO() method is called. More...

BBox &	getBBox () noexcept
	a method to get the current bounding box of the mesh More...

std::vector< Vec3 >	getVertexList () noexcept
	accessor for the vertex data More...

Vec3	getVertexAtIndex (uint32_t _i) const noexcept
	accessor for the vertex data More...

std::vector< Vec3 >	getNormalList () noexcept
	accessor for the normals data More...

std::vector< Vec3 >	getTextureCordList () noexcept
	accessor for the texture co-ordinates data More...

std::vector< Face >	getFaceList () noexcept
	accessor for the Face data More...

unsigned int	getNumVerts () const noexcept
	accessor to get the number of vertices in the object More...

unsigned int	getNumNormals () const noexcept
	accessor to get the number of normals in the object More...

unsigned int	getNumTexCords () const noexcept
	accessor to get the number of texture co-ordinates in the object More...

unsigned int	getNumFaces () const noexcept
	accessor to get the number of faces in the object More...

unsigned int	getMeshSize () const noexcept

Vec3	getSphereCenter () const noexcept
	accesor to get the bounding sphere center More...

Real	getSphereRadius () const noexcept
	accesor to get the bounding sphere center More...

Vec3	getCenter () const noexcept
	accesor to get the center More...

bool	isTriangular () noexcept
	check to see if obj is triangulated as we only support tri or quad objs at the moment More...

Protected Member Functions
virtual void	parseVertex (const char *_begin) noexcept
	parser function to parse the vertex used by boost::spirit parser More...

virtual void	parseNormal (const char *_begin) noexcept
	parser function to parse the Norma used by boost::spirit parser More...

virtual void	parseTextureCoordinate (const char *_begin) noexcept
	parser function to parse the text cord used by boost::spirit parser More...

virtual void	parseFace (const char *_begin) noexcept
	parser function to parse the Face data used by boost::spirit parser More...

Additional Inherited Members
Protected Attributes inherited from ngl::AbstractMesh
unsigned int	m_nVerts
	The number of vertices in the object. More...

unsigned int	m_nNorm
	The number of normals in the object. More...

unsigned int	m_nTex
	the number of texture co-ordinates in the object More...

unsigned int	m_nFaces
	the number of faces in the object More...

std::vector< Vec3 >	m_verts
	Pointer to the Vertex list. More...

std::vector< Vec3 >	m_norm
	Pointer to the Normal List. More...

std::vector< Vec3 >	m_tex
	Pointer to the Texture co-ord list (note that only x and y are used) More...

std::vector< Face >	m_face
	Pointer to the Face list. More...

Vec3	m_center
	Center of the object. More...

std::vector< IndexRef >	m_indices
	a vector of indices used to pass the index into the Data arrays to the VBO More...

std::vector< GLuint >	m_outIndices
	a vectr of indices without duplicates which are actually passed to the VBO when creating More...

size_t	m_indexSize
	the size of the index array More...

size_t	m_meshSize

GLuint	m_vboBuffers
	buffers for the VBO in order Vert, Tex, Norm More...

std::unique_ptr< AbstractVAO >	m_vaoMesh
	id for our vertexArray object More...

bool	m_vbo
	flag to indicate if a VBO has been created More...

bool	m_vao
	flag to indicate if a VBO has been created More...

bool	m_vboMapped
	flag to indicate if the VBO vertex data has been mapped More...

bool	m_texture
	flag to indicate if texture assigned More...

GLuint	m_textureID
	The openGL id of the texture for the texture generation. More...

Real	m_maxX
	The Maximum X value in the obj file used to calculate the extents bbox. More...

Real	m_minX
	The Min X value in the obj file used to calculate the extents bbox. More...

Real	m_maxY
	The Max Y value in the obj file used to calculate the extents bbox. More...

Real	m_minY
	The Min Y value in the obj file used to calculate the extents bbox. More...

Real	m_maxZ
	The Max Z value in the obj file used to calculate the extents bbox. More...

Real	m_minZ
	The Min Z value in the obj file used to calculate the extents bbox. More...

std::unique_ptr< BBox >	m_ext
	Create a bounding box of the object to store it's extents. More...

GLuint	m_dataPackType
	determines if the data is Packed as either TRI or QUAD More...

unsigned int	m_bufferPackSize
	the size of the buffer pack we use this for the saving of bin vbo but it actually holds the size of the data (3 for just verts 5 verts norms etc) More...

GLenum	m_vboDrawType
	which type of VBO are we going to draw More...

bool	m_loaded
	flag to indicate if anything loaded for dtor More...

Vec3	m_sphereCenter
	the center of the bounding sphere More...

Real	m_sphereRadius
	the radius of the bounding sphere More...

Detailed Description

used to load in an alias wave front obj format file and draw using open gl has been completly re-written to use boost::spirit parser, most of this code is a modified version of the OBJReader class from the cortex-vfx lib framework here http://code.google.com/p/cortex-vfx/

Author: Jonathan Macey

Version: 4.0

Date: 22/10/09 updated to use boost::spirit parser framework

Definition at line 53 of file Obj.h.

Constructor & Destructor Documentation

ngl::Obj::Obj ( )

inlinenoexcept

default constructor

Definition at line 61 of file Obj.h.

ngl::Obj::Obj	(	const std::string &	_fname,
		bool	_calcBB = `true`
	)

explicitnoexcept

constructor to load an objfile as a parameter

Parameters

[in] &_fname the name of the obj file to load

Definition at line 232 of file Obj.cpp.

ngl::Obj::Obj	(	const std::string &	_fname,
		const std::string &	_texName,
		bool	_calcBB = `true`
	)

explicitnoexcept

constructor to load an objfile as a parameter

Parameters

[in]	&_fname	the name of the obj file to load
[in]	&_texName	the name of the texture file

Definition at line 270 of file Obj.cpp.

ngl::Obj::Obj	(	const char *	_fname,
		const char *	_texName,
		bool	_calcBB = `true`
	)

explicitnoexcept

Definition at line 250 of file Obj.cpp.

Member Function Documentation

bool ngl::Obj::load	(	const std::string &	_fname,
		bool	_calcBB = `true`
	)

virtualnoexcept

Method to load the file in.

Parameters

[in]	_fname	the name of the obj file to load
[in]	_calcBB	if we only want to load data and not use GL then set this to false

our tex rule and binding of the parse function

Implements ngl::AbstractMesh.

Definition at line 177 of file Obj.cpp.

References parseFace(), parseNormal(), parseTextureCoordinate(), and parseVertex().

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void ngl::Obj::parseFace ( const char * _begin )

protectedvirtualnoexcept

parser function to parse the Face data used by boost::spirit parser

Parameters

[in] _begin the start of the string to parse

Definition at line 94 of file Obj.cpp.

References ngl::Face::m_norm, ngl::Face::m_normals, ngl::Face::m_numVerts, ngl::Face::m_tex, ngl::Face::m_textureCoord, and ngl::Face::m_vert.

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void ngl::Obj::parseNormal ( const char * _begin )

protectedvirtualnoexcept

parser function to parse the Norma used by boost::spirit parser

Parameters

[in] _begin the start of the string to parse

Definition at line 78 of file Obj.cpp.

References NGL_UNUSED.

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void ngl::Obj::parseTextureCoordinate ( const char * _begin )

protectedvirtualnoexcept

parser function to parse the text cord used by boost::spirit parser

Parameters

[in] _begin the start of the string to parse

Definition at line 58 of file Obj.cpp.

References NGL_UNUSED.

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void ngl::Obj::parseVertex ( const char * _begin )

protectedvirtualnoexcept

parser function to parse the vertex used by boost::spirit parser

Parameters

[in] _begin the start of the string to parse

Definition at line 40 of file Obj.cpp.

References NGL_UNUSED.

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void ngl::Obj::save ( const std::string & _fname ) const

noexcept

method to save the obj

Parameters

[in] _fname the name of the file to save

Definition at line 290 of file Obj.cpp.

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

Public Member Functions

Protected Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation