ACG::SceneGraph::ACG::DrawMeshT< Mesh > Class Template Reference

Mesh Drawing Class. More...

Inheritance diagram for ACG::SceneGraph::ACG::DrawMeshT< Mesh >:

Classes
struct	Subset
struct	VertexProperty

Public Types
enum	PropertySource { PROPERTY_SOURCE_VERTEX = 0, PROPERTY_SOURCE_HALFEDGE, PROPERTY_SOURCE_FACE }

Public Member Functions
	DrawMeshT (Mesh &_mesh)
void	disableColors ()
void	usePerVertexColors ()
void	usePerFaceColors ()
void	setFlatShading ()
void	setSmoothShading ()
void	usePerVertexTexcoords ()
void	usePerHalfedgeTexcoords ()
void	usePerVertexNormals ()
void	usePerHalfedgeNormals ()
void	bindBuffers ()
	eventually rebuilds buffers used for rendering and binds index and vertex buffer
GLuint	getVBO ()
	get opengl vertex buffer id
GLuint	getIBO ()
	get opengl index buffer id
VertexDeclaration *	getVertexDeclaration ()
	get vertex declaration of the current vbo layout
unsigned int	mapVertexToVBOIndex (unsigned int _v)
	map from vertex index of the original mesh point buffer to the corresponding vertex index inside the VBO. More...
void	bindBuffersToRenderObject (RenderObject *_obj)
	eventually rebuilds buffers used for rendering and binds index and vertex buffer
void	unbindBuffers ()
	disables vertex, normal, texcoord and color pointers in OpenGL
void	draw (std::map< int, GLuint > *_textureMap, bool _nonindexed=false)
	binds index and vertex buffer and executes draw calls More...
void	addTriRenderObjects (IRenderer *_renderer, const RenderObject *_baseObj, std::map< int, GLuint > *_textureMap, bool _nonindexed=false)
	adds RenderObjects to a deferred draw call renderer More...
void	drawLines ()
	render the mesh in wireframe mode
void	addLineRenderObjects (IRenderer *_renderer, const RenderObject *_baseObj)
	render the mesh in wireframe mode, deferred draw call
void	drawVertices ()
	render vertices only
void	addPointRenderObjects (IRenderer *_renderer, const RenderObject *_baseObj)
	render vertices only, deferred draw call
unsigned int	getMemoryUsage (bool _printReport=false)
	measures the size in bytes of allocated memory. eventually prints a report to std::cout
void	updateTopology ()
	request an update for the mesh topology
void	updateGeometry ()
	request an update for the mesh vertices
void	updateTextures ()
	request an update for the textures
void	updateFull ()
	request a full rebuild of the mesh More...
unsigned int	getNumTextures ()
	returns the number of used textured of this mesh More...
void	setTextureIndexPropertyName (std::string _indexPropertyName)
	set the name of the property used for texture index specification More...
const std::string &	getTextureIndexPropertyName () const
	get the name of the texture index property More...
void	setPerFaceTextureCoordinatePropertyName (std::string _perFaceTextureCoordinatePropertyName)
	set the name of the property used for texture coordinate More...
int	perFaceTextureCoordinateAvailable ()
	Check if per Face Texture coordinates are available. More...
int	perFaceTextureIndexAvailable ()
	Check if texture indices are available. More...
void	addVertexElement (const std::string &_propertyName, PropertySource _source=PROPERTY_SOURCE_VERTEX)
	Add custom elements to the vertex layout. More...
bool	scanVertexShaderForInput (const std::string &_vertexShaderFile)
	Scan vertex layout from vertex shader. More...
void	updatePickingVertices (ACG::GLState &_state, uint _offset=0)
ACG::Vec4uc *	pickVertexColorBuffer ()
	get a pointer to the per vertex picking color buffer More...
ACG::Vec3f *	pickVertexBuffer ()
	get a pointer to the per vertex picking vertex buffer More...
void	drawPickingVertices_opt (const GLMatrixf &_mvp, int _pickOffset)
	Optimized rendering of vertex picking ids with a shader. More...
bool	supportsPickingVertices_opt ()
	Check if optimized vertex picking is supported. More...
void	updatePickingVertices_opt (ACG::GLState &_state)
	Update color picking array for the shader implementation. More...
void	updatePickingEdges (ACG::GLState &_state, uint _offset=0)
	Update color picking array for edges. More...
ACG::Vec4uc *	pickEdgeColorBuffer ()
	get a pointer to the per edge picking color buffer More...
void	drawPickingEdges_opt (const GLMatrixf &_mvp, int _pickOffset)
	Optimized rendering of edge picking ids with a shader. More...
bool	supportsPickingEdges_opt ()
	Check if optimized face picking is supported. More...
void	updatePickingEdges_opt (ACG::GLState &_state)
	Update color picking array for the shader implementation. More...
void	updatePickingFaces (ACG::GLState &_state)
	Update color picking array for faces. More...
ACG::Vec4uc *	pickFaceColorBuffer ()
	get a pointer to the per face picking color buffer More...
ACG::Vec3f *	pickFaceVertexBuffer ()
	get a pointer to the per vertex picking color buffer More...
void	drawPickingFaces_opt (const GLMatrixf &_mvp, int _pickOffset)
	Optimized rendering of face picking ids with a shader. More...
bool	supportsPickingFaces_opt ()
	Check if optimized face picking is supported. More...
void	updatePickingFaces_opt (ACG::GLState &_state)
	Update color picking array for the shader implementation. More...
void	updatePickingAny (ACG::GLState &_state)
	Call this function to update the color picking array. More...
ACG::Vec4uc *	pickAnyFaceColorBuffer ()
	get a pointer to the any picking color buffer More...
ACG::Vec4uc *	pickAnyEdgeColorBuffer ()
	get a pointer to the any picking color buffer More...
ACG::Vec4uc *	pickAnyVertexColorBuffer ()
	get a pointer to the any picking color buffer More...
void	drawPickingAny_opt (const GLMatrixf &_mvp, int _pickOffset)
	Optimized rendering of any picking ids with a shader. More...
bool	supportsPickingAny_opt ()
	Check if optimized any picking is supported. More...
void	updatePickingAny_opt (ACG::GLState &_state)
	Update color picking array for the shader implementation. More...
void	dumpObj (const char *_filename) const
	dump current vertex/index buffer to wavefront obj More...
void	invalidateFullVBO ()
	the mesh has been changed More...
void	updateFullVBO ()
	update the full mesh vbo More...
void	invalidatePerEdgeBuffers ()
	Update of the buffers. More...
void	updatePerEdgeBuffers ()
	Update all per edge drawing buffers. More...
ACG::Vec3f *	perEdgeVertexBuffer ()
	get a pointer to the per edge vertex buffer More...
ACG::Vec4f *	perEdgeColorBuffer ()
	get a pointer to the per edge color buffer More...
void	invalidatePerHalfedgeBuffers ()
	Update of the buffers. More...
template<typename Mesh::Normal(DrawMeshT::*)(typename Mesh::FaceHandle) NormalLookup>
void	updatePerHalfedgeBuffers ()
	Update all per edge drawing buffer n The updated buffers are: per edge vertex buffer ( 2 vertices per edge )
ACG::Vec3f *	perHalfedgeVertexBuffer ()
	get a pointer to the per edge vertex buffer More...
ACG::Vec4f *	perHalfedgeColorBuffer ()
	get a pointer to the per edge color buffer More...
void	updateEdgeHalfedgeVertexDeclarations ()
	updates per edge and halfedge vertex declarations
const VertexDeclaration *	getEdgeColoredVertexDeclaration () const
	getter for vertex declarations
const VertexDeclaration *	getHalfedgeVertexDeclaration () const
	getter for vertex declarations
const VertexDeclaration *	getHalfedgeColoredVertexDeclaration () const
	getter for vertex declarations
Public Member Functions inherited from ACG::SceneGraph::ACG::DrawMeshBase
unsigned int	getNumTris () const
unsigned int	getNumVerts () const
MeshCompiler *	getMeshCompiler ()
	get mesh compiler used to create the draw mesh
unsigned int	getNumSubsets () const
GLenum	getIndexType () const
	get index type of index buffer
GLuint	pickVertexIBO_opt ()
	get an index buffer mapping from openmesh vertices to drawmesh vbo vertices More...

Private Types
enum	REBUILD_TYPE {   REBUILD_NONE = 0, REBUILD_FULL = 1, REBUILD_GEOMETRY = 2, REBUILD_TOPOLOGY = 4,   REBUILD_TEXTURES = 8 }

Private Member Functions
void	rebuild ()
	draw_mesh updater More...
void	readVertex (unsigned int _vertex, const typename Mesh::VertexHandle _vh, const typename Mesh::HalfedgeHandle _hh, const typename Mesh::FaceHandle _fh)
	reads a vertex from mesh_ and write it to vertex buffer More...
unsigned int	getVertexColor (const typename Mesh::VertexHandle _vh)
	return a vertex color from mesh More...
unsigned int	getFaceColor (const typename Mesh::FaceHandle _fh)
	return a face color from mesh More...
void	updateGPUBuffers ()
	eventually update vertex and index buffers More...
void	createVBO ()
	stores the vertex buffer on the gpu More...
void	createIBO ()
	stores the index buffer on the gpu More...
void	createVertexDeclaration ()
	creates all vertex declarations needed for deferred draw call renderer More...
unsigned int	countTris (unsigned int *_pOutMaxPolyVerts=0, unsigned int *_pOutNumIndices=0)
	Number of triangles after triangulation of the mesh. More...
int	getTextureIDofTri (unsigned int _tri)
	get the texture index of a triangle More...
int	getTextureIDofFace (unsigned int _face)
	get the texture index of a face More...
const void *	getMeshPropertyType (OpenMesh::BaseProperty *_prop, GLuint *_outType, unsigned int *_outSize) const
	get the data type of a mesh property More...
template<class T >
const void *	testMeshPropertyTypeT (const OpenMesh::BaseProperty *_prop, unsigned int *_outSize) const
	test mesh property for type T More...
void	writeVertexElement (void *_dstBuf, unsigned int _vertex, unsigned int _stride, unsigned int _elementOffset, unsigned int _elementSize, const void *_elementData)
void	writePosition (unsigned int _vertex, const ACG::Vec3d &_p)
void	writeNormal (unsigned int _vertex, const ACG::Vec3d &_n)
void	writeTexcoord (unsigned int _vertex, const ACG::Vec2f &_uv)
void	writeColor (unsigned int _vertex, unsigned int _color)
void	writeVertexProperty (unsigned int _vertex, const VertexElement *_elementDesc, const ACG::Vec4f &_propf)
void	writeVertexProperty (unsigned int _vertex, const VertexElement *_elementDesc, const ACG::Vec4d &_propd)
void	readVertexFromVBO (unsigned int _vertex, void *_dst)
	Read one vertex from the rendering vbo. More...
template<typename Mesh::Normal(DrawMeshT::*)(typename Mesh::FaceHandle) NormalLookup>
Mesh::Point	halfedge_point (const typename Mesh::HalfedgeHandle _heh)
	compute halfedge point compute visualization point for halfedge (shifted to interior of face) More...
Mesh::Normal	cachedNormalLookup (typename Mesh::FaceHandle fh)
Mesh::Normal	computedTriMeshNormal (typename Mesh::FaceHandle fh)
Mesh::Normal	computedNormal (typename Mesh::FaceHandle fh)
Mesh::HalfedgeHandle	mapToHalfedgeHandle (int _vertexId)

Private Attributes
std::vector< ACG::Vec3f >	pickVertBuf_
	The vertex buffer used for vertex picking.
std::vector< ACG::Vec4uc >	pickVertColBuf_
	The color buffer used for vertex picking.
GLSL::Program *	pickVertexShader_
int	pickVertexMethod_
std::vector< ACG::Vec4uc >	pickEdgeBuf_
GLSL::Program *	pickEdgeShader_
std::vector< ACG::Vec3f >	pickFaceVertexBuf_
std::vector< ACG::Vec4uc >	pickFaceColBuf_
GLSL::Program *	pickFaceShader_
	optimized face picking shader
std::vector< ACG::Vec4uc >	pickAnyFaceColBuf_
std::vector< ACG::Vec4uc >	pickAnyEdgeColBuf_
std::vector< ACG::Vec4uc >	pickAnyVertexColBuf_
Mesh &	mesh_
	OpenMesh object to be rendered.
unsigned int *	indices_
	final index buffer used for rendering
unsigned int	rebuild_
	hint on what to rebuild
size_t	prevNumFaces_
size_t	prevNumVerts_
int	colorMode_
	Color Mode: 0: none, 1: per vertex, else: per face.
int	curVBOColorMode_
	Color Mode of vbo.
int	flatMode_
	flat / smooth shade mode toggle
int	bVBOinFlatMode_
	normals in VBO currently in flat / smooth mode
int	textureMode_
	per vertex / halfedge texture mode toggle: 0: per vertex, 1: per halfedge
int	bVBOinHalfedgeTexMode_
	texcoords in VBO currently in per vertex / halfedge mode toggle
int	halfedgeNormalMode_
	per vertex / halfedge normals mode toggle: 0: per vertex, 1: per halfedge
int	bVBOinHalfedgeNormalMode_
	normals in VBO currently in per vertex / halfedge mode toggle
unsigned int *	invVertexMap_
const size_t	offsetPos_
	fixed vertex elements:
const size_t	offsetNormal_
const size_t	offsetTexc_
const size_t	offsetColor_
std::vector< VertexProperty >	additionalElements_
	additional optional elements
std::string	textureIndexPropertyName_
	Property for the per face texture index. More...
std::string	perFaceTextureCoordinatePropertyName_
	Property for the per face texture coordinates. More...
GeometryBuffer	vboFull_
bool	updateFullVBO_
int	updatePerEdgeBuffers_
std::vector< ACG::Vec3f >	perEdgeVertexBuf_
std::vector< ACG::Vec4f >	perEdgeColorBuf_
int	updatePerHalfedgeBuffers_
std::vector< ACG::Vec3f >	perHalfedgeVertexBuf_
std::vector< ACG::Vec4f >	perHalfedgeColorBuf_

Additional Inherited Members
Protected Member Functions inherited from ACG::SceneGraph::ACG::DrawMeshBase
void	deleteIbo ()
void	bindVbo ()
void	bindIbo ()
void	bindLineIbo ()
void	bindPickVertexIbo ()
void	createIndexBuffer ()
void	fillLineBuffer (size_t n_edges, void *data)
void	fillVertexBuffer ()
void	fillInvVertexMap (size_t n_vertices, void *data)
Protected Attributes inherited from ACG::SceneGraph::ACG::DrawMeshBase
GLuint	vbo_
GLuint	ibo_
size_t	numTris_
size_t	numVerts_
MeshCompiler *	meshComp_
GLuint	lineIBO_
	index buffer used in Wireframe / Hiddenline mode
GLenum	indexType_
	support for 2 and 4 byte unsigned integers
std::vector< char >	vertices_
VertexDeclaration *	vertexDecl_
	vertex buffer layout declaration with per vertex colors
VertexDeclaration *	vertexDeclEdgeCol_
	vertex buffer layout declaration with per edge colors
VertexDeclaration *	vertexDeclHalfedgeCol_
	vertex buffer layout declaration with per halfedge colors
VertexDeclaration *	vertexDeclHalfedgePos_
	vertex buffer layout declaration with halfedge positions only
GLuint	pickVertexIBO_
	map from openmesh vertex to vbo vertex id

Detailed Description

template<class Mesh>
class ACG::SceneGraph::ACG::DrawMeshT< Mesh >

Mesh Drawing Class.

This class creates a new mesh for efficient rendering based on an OpenMesh object. DrawMesh also supports optimized picking and toggling between vertex/halfedge/face normals and vertex/halfedge texcoords.

It is not recommended to use this class if the input mesh does not implement an OpenMesh kernel. Instead, MeshCompiler can be used directly to build the vertex and index buffer.

Definition at line 172 of file MeshNode2T.cc.

Member Function Documentation

template<class Mesh>

void ACG::SceneGraph::ACG::DrawMeshT< Mesh >::addTriRenderObjects	(	IRenderer *	_renderer,
		const RenderObject *	_baseObj,
		std::map< int, GLuint > *	_textureMap,
		bool	_nonindexed = false
	)

adds RenderObjects to a deferred draw call renderer

Parameters

_renderer	renderobjects are added to this renderer
_baseObj	address of the base renderobject with information about shader generation, gl states, matrices ..
_textureMap	maps from internally texture-id to OpenGL texture id
_nonindexed	use non-indexed vbo instead of optimized indexed vbo (should be avoided if possible) may be null to disable textured rendering

template<class Mesh>

void ACG::SceneGraph::ACG::DrawMeshT< Mesh >::addVertexElement	(	const std::string &	_propertyName,
		PropertySource	_source = PROPERTY_SOURCE_VERTEX
	)

Add custom elements to the vertex layout.

Parameters

_propertyName	name id of property in OpenMesh
_source	source of property, ie per vertex, per face or per halfedge

template<class Mesh>

unsigned int ACG::SceneGraph::ACG::DrawMeshT< Mesh >::countTris ( unsigned int *  _pOutMaxPolyVerts = 0, unsigned int *  _pOutNumIndices = 0  )

private

Number of triangles after triangulation of the mesh.

returns the number of tris after triangulation of this mesh if needed, also returns the highest number of vertices of a face

Parameters

_pOutMaxPolyVerts	max face size
_pOutNumIndices	total number of indices

Returns

number of triangles

template<class Mesh>

void ACG::SceneGraph::ACG::DrawMeshT< Mesh >::createIBO ( )

private

stores the index buffer on the gpu

template<class Mesh>

void ACG::SceneGraph::ACG::DrawMeshT< Mesh >::createVBO ( )

private

stores the vertex buffer on the gpu

template<class Mesh>

void ACG::SceneGraph::ACG::DrawMeshT< Mesh >::createVertexDeclaration ( )

private

creates all vertex declarations needed for deferred draw call renderer

template<class Mesh>

void ACG::SceneGraph::ACG::DrawMeshT< Mesh >::draw	(	std::map< int, GLuint > *	_textureMap,
		bool	_nonindexed = false
	)

binds index and vertex buffer and executes draw calls

Parameters

_textureMap	maps from internally texture-id to OpenGL texture id, may be null to disable textured rendering
_nonindexed	use unoptimized non-indexed vbo for rendering, not as efficient in terms of memory usage and performance as an indexed draw call.

template<class Mesh>

void ACG::SceneGraph::ACG::DrawMeshT< Mesh >::drawPickingAny_opt	(	const GLMatrixf &	_mvp,
		int	_pickOffset
	)

Optimized rendering of any picking ids with a shader.

Parameters

_mvp	model view projection transformation
_pickOffset	base picking id of the first element

template<class Mesh>

void ACG::SceneGraph::ACG::DrawMeshT< Mesh >::drawPickingEdges_opt	(	const GLMatrixf &	_mvp,
		int	_pickOffset
	)

Optimized rendering of edge picking ids with a shader.

Parameters

_mvp	model view projection transformation
_pickOffset	base picking id of the first edge

template<class Mesh>

void ACG::SceneGraph::ACG::DrawMeshT< Mesh >::drawPickingFaces_opt	(	const GLMatrixf &	_mvp,
		int	_pickOffset
	)

Optimized rendering of face picking ids with a shader.

Parameters

_mvp	model view projection transformation
_pickOffset	base picking id of the first face

template<class Mesh>

void ACG::SceneGraph::ACG::DrawMeshT< Mesh >::drawPickingVertices_opt	(	const GLMatrixf &	_mvp,
		int	_pickOffset
	)

Optimized rendering of vertex picking ids with a shader.

Parameters

_mvp	model view projection transformation
_pickOffset	base picking id of the first vertex

template<class Mesh>

void ACG::SceneGraph::ACG::DrawMeshT< Mesh >::dumpObj

(

const char *

_filename

)

const

dump current vertex/index buffer to wavefront obj

Parameters

_filename

file name of obj file

template<class Mesh>

unsigned int ACG::SceneGraph::ACG::DrawMeshT< Mesh >::getFaceColor ( const typename Mesh::FaceHandle  _fh )

private

return a face color from mesh

Parameters

_fh	mesh face handle

template<class Mesh>

const void* ACG::SceneGraph::ACG::DrawMeshT< Mesh >::getMeshPropertyType ( OpenMesh::BaseProperty *  _prop, GLuint *  _outType, unsigned int *  _outSize  ) const

private

get the data type of a mesh property

Parameters

_prop	mesh property
_outType	[out] data type i.e. GL_FLOAT, GL_DOUBLE
_outSize	[out] number of atoms in range 1..4

Returns

address of property data

template<class Mesh>

unsigned int ACG::SceneGraph::ACG::DrawMeshT< Mesh >::getNumTextures

(

)

returns the number of used textured of this mesh

Returns

Number of different textures used in the mesh

template<class Mesh>

int ACG::SceneGraph::ACG::DrawMeshT< Mesh >::getTextureIDofFace ( unsigned int  _face )

private

get the texture index of a face

Parameters

_face

Face index

Returns

Face Texture id of face

template<class Mesh>

int ACG::SceneGraph::ACG::DrawMeshT< Mesh >::getTextureIDofTri ( unsigned int  _tri )

private

get the texture index of a triangle

Parameters

_tri	Triangle index (-1 if not available)

Returns

Texture index of a triangle

template<class Mesh>

const std::string& ACG::SceneGraph::ACG::DrawMeshT< Mesh >::getTextureIndexPropertyName ( ) const

inline

get the name of the texture index property

Returns

name of the texture index property

Definition at line 316 of file MeshNode2T.cc.

template<class Mesh>

unsigned int ACG::SceneGraph::ACG::DrawMeshT< Mesh >::getVertexColor ( const typename Mesh::VertexHandle  _vh )

private

return a vertex color from mesh

Parameters

_vh	mesh vertex handle

template<class Mesh>

template<typename Mesh::Normal(DrawMeshT::*)(typename Mesh::FaceHandle) NormalLookup>

Mesh::Point ACG::SceneGraph::ACG::DrawMeshT< Mesh >::halfedge_point ( const typename Mesh::HalfedgeHandle  _heh )

private

compute halfedge point compute visualization point for halfedge (shifted to interior of face)

Parameters

_heh

Returns

template<class Mesh>

void ACG::SceneGraph::ACG::DrawMeshT< Mesh >::invalidateFullVBO

(

)

the mesh has been changed

call this function if you changed anything of the mesh.

template<class Mesh>

void ACG::SceneGraph::ACG::DrawMeshT< Mesh >::invalidatePerEdgeBuffers ( )

inline

Update of the buffers.

This function will set all per edge buffers to invalid and will force an update whe they are requested

Definition at line 996 of file MeshNode2T.cc.

template<class Mesh>

void ACG::SceneGraph::ACG::DrawMeshT< Mesh >::invalidatePerHalfedgeBuffers ( )

inline

Update of the buffers.

This function will set all per edge buffers to invalid and will force an update whe they are requested

Definition at line 1021 of file MeshNode2T.cc.

template<class Mesh>

unsigned int ACG::SceneGraph::ACG::DrawMeshT< Mesh >::mapVertexToVBOIndex

(

unsigned int

_v

)

map from vertex index of the original mesh point buffer to the corresponding vertex index inside the VBO.

Parameters

_v	vertex index into mesh points

Returns

vertex index into VBO

template<class Mesh>

ACG::Vec4f* ACG::SceneGraph::ACG::DrawMeshT< Mesh >::perEdgeColorBuffer

(

)

get a pointer to the per edge color buffer

This function will return a pointer to the first element of the color buffer.

template<class Mesh>

ACG::Vec3f* ACG::SceneGraph::ACG::DrawMeshT< Mesh >::perEdgeVertexBuffer

(

)

get a pointer to the per edge vertex buffer

This function will return a pointer to the first element of the vertex buffer.

template<class Mesh>

int ACG::SceneGraph::ACG::DrawMeshT< Mesh >::perFaceTextureCoordinateAvailable

(

)

Check if per Face Texture coordinates are available.

If this function returns true, a per face per vertex texture array is available

Returns

zero if not available, nonzero otherwise

template<class Mesh>

int ACG::SceneGraph::ACG::DrawMeshT< Mesh >::perFaceTextureIndexAvailable

(

)

Check if texture indices are available.

If this function returns true, the strip processor will respect textures during strip generation. Each returned strip has than an index that has to be used as a texture index during strip rendering.

Returns

zero if not available, nonzero otherwise

template<class Mesh>

ACG::Vec4f* ACG::SceneGraph::ACG::DrawMeshT< Mesh >::perHalfedgeColorBuffer

(

)

get a pointer to the per edge color buffer

This function will return a pointer to the first element of the color buffer.

template<class Mesh>

ACG::Vec3f* ACG::SceneGraph::ACG::DrawMeshT< Mesh >::perHalfedgeVertexBuffer

(

)

get a pointer to the per edge vertex buffer

This function will return a pointer to the first element of the vertex buffer.

template<class Mesh>

ACG::Vec4uc* ACG::SceneGraph::ACG::DrawMeshT< Mesh >::pickAnyEdgeColorBuffer ( )

inline

get a pointer to the any picking color buffer

This function will return a pointer to the first element of the picking buffer. Use updatePickingAny to update the buffer before you render it via ACG::GLState::colorPointer.

Returns

Pointer to the first element of the picking buffer

Definition at line 706 of file MeshNode2T.cc.

template<class Mesh>

ACG::Vec4uc* ACG::SceneGraph::ACG::DrawMeshT< Mesh >::pickAnyFaceColorBuffer ( )

inline

get a pointer to the any picking color buffer

This function will return a pointer to the first element of the picking buffer. Use updatePickingAny to update the buffer before you render it via ACG::GLState::colorPointer.

Returns

Pointer to the first element of the picking buffer

Definition at line 689 of file MeshNode2T.cc.

template<class Mesh>

ACG::Vec4uc* ACG::SceneGraph::ACG::DrawMeshT< Mesh >::pickAnyVertexColorBuffer ( )

inline

get a pointer to the any picking color buffer

This function will return a pointer to the first element of the picking buffer. Use updatePickingAny to update the buffer before you render it via ACG::GLState::colorPointer.

Returns

Pointer to the first element of the picking buffer

Definition at line 723 of file MeshNode2T.cc.

template<class Mesh>

ACG::Vec4uc* ACG::SceneGraph::ACG::DrawMeshT< Mesh >::pickEdgeColorBuffer ( )

inline

get a pointer to the per edge picking color buffer

This function will return a pointer to the first element of the picking buffer. Use updatePickingEdges to update the buffer before you render it via ACG::GLState::colorPointer.

Returns

pointer to the first element of the picking buffer

Definition at line 547 of file MeshNode2T.cc.

template<class Mesh>

ACG::Vec4uc* ACG::SceneGraph::ACG::DrawMeshT< Mesh >::pickFaceColorBuffer ( )

inline

get a pointer to the per face picking color buffer

This function will return a pointer to the first element of the picking buffer. Use updatePickingFaces to update the buffer before you render it via ACG::GLState::colorPointer.

Returns

pointer to the per face picking color buffer

Definition at line 600 of file MeshNode2T.cc.

template<class Mesh>

ACG::Vec3f* ACG::SceneGraph::ACG::DrawMeshT< Mesh >::pickFaceVertexBuffer ( )

inline

get a pointer to the per vertex picking color buffer

This function will return a pointer to the first element of the picking buffer. Use updatePickingFaces to update the buffer before you render it via ACG::GLState::colorPointer.

Returns

pointer to the first element of the picking buffer

Definition at line 617 of file MeshNode2T.cc.

template<class Mesh>

ACG::Vec3f* ACG::SceneGraph::ACG::DrawMeshT< Mesh >::pickVertexBuffer ( )

inline

get a pointer to the per vertex picking vertex buffer

This function will return a pointer to the first element of the picking buffer. Use updatePickingVertices to update the buffer before you render it via ACG::GLState::vertexPointer.

Returns

pointer to the first element of the picking buffer

Definition at line 462 of file MeshNode2T.cc.

template<class Mesh>

ACG::Vec4uc* ACG::SceneGraph::ACG::DrawMeshT< Mesh >::pickVertexColorBuffer ( )

inline

get a pointer to the per vertex picking color buffer

This function will return a pointer to the first element of the picking buffer. Use updatePickingVertices to update the buffer before you render it via ACG::GLState::colorPointer.

Returns

pointer to the first element of the picking buffer

Definition at line 445 of file MeshNode2T.cc.

template<class Mesh>

void ACG::SceneGraph::ACG::DrawMeshT< Mesh >::readVertex ( unsigned int  _vertex, const typename Mesh::VertexHandle  _vh, const typename Mesh::HalfedgeHandle  _hh, const typename Mesh::FaceHandle  _fh  )

private

reads a vertex from mesh_ and write it to vertex buffer

Parameters

_vertex	target vertex id in vbo
_vh	mesh vertex handle to read from
_hh	corresponding halfedge handle of this vertex
_fh	corresponding face handle of this vertex

template<class Mesh>

void ACG::SceneGraph::ACG::DrawMeshT< Mesh >::readVertexFromVBO ( unsigned int  _vertex, void *  _dst  )

private

Read one vertex from the rendering vbo.

Parameters

_vertex	vertex id from the rendering vbo (not the original input id from openmesh!)
_dst	[out] pointer to address that will store the vertex. Must have enough space allocated, see vertex declaration stride to get the number of bytes

template<class Mesh>

void ACG::SceneGraph::ACG::DrawMeshT< Mesh >::rebuild ( )

private

draw_mesh updater

template<class Mesh>

bool ACG::SceneGraph::ACG::DrawMeshT< Mesh >::scanVertexShaderForInput

(

const std::string &

_vertexShaderFile

)

Scan vertex layout from vertex shader.

Scans a vertex shader for inputs and tries to get the matching properties from OpenMesh. The name of the input attribute in the shader has to match the property name in OpenMesh. Per halfedge properties are preferred over per vertex properties when available. Per face properties are used if the attribute is qualified as "flat" in the shader.

Parameters

_vertexShaderFile

filename of vertex shader (or vertex shader template)

Returns

true if all requested properties are available, false otherwise

template<class Mesh>

void ACG::SceneGraph::ACG::DrawMeshT< Mesh >::setPerFaceTextureCoordinatePropertyName

(

std::string

_perFaceTextureCoordinatePropertyName

)

set the name of the property used for texture coordinate

The given property name will define per face Texture coordinates. This property has to be a halfedge property. The coordinate on each edge is the texture coordinate of the to vertex. If this property is not available, textures will not be processed by the strip processor.

Parameters

_perFaceTextureCoordinatePropertyName

template<class Mesh>

void ACG::SceneGraph::ACG::DrawMeshT< Mesh >::setTextureIndexPropertyName

(

std::string

_indexPropertyName

)

set the name of the property used for texture index specification

The given property name will define a texture index. The strip processor checks this property and generates strips which contain only the same index. If the property is not found, strips will be independent of this property

Parameters

_indexPropertyName

template<class Mesh>

bool ACG::SceneGraph::ACG::DrawMeshT< Mesh >::supportsPickingAny_opt

(

)

Check if optimized any picking is supported.

template<class Mesh>

bool ACG::SceneGraph::ACG::DrawMeshT< Mesh >::supportsPickingEdges_opt

(

)

Check if optimized face picking is supported.

template<class Mesh>

bool ACG::SceneGraph::ACG::DrawMeshT< Mesh >::supportsPickingFaces_opt

(

)

Check if optimized face picking is supported.

template<class Mesh>

bool ACG::SceneGraph::ACG::DrawMeshT< Mesh >::supportsPickingVertices_opt

(

)

Check if optimized vertex picking is supported.

template<class Mesh>

template<class T >

const void* ACG::SceneGraph::ACG::DrawMeshT< Mesh >::testMeshPropertyTypeT ( const OpenMesh::BaseProperty *  _prop, unsigned int *  _outSize  ) const

private

test mesh property for type T

Test whether property is of type T (eg float) or is a vector of type T. Property vectors up to size 4 are supported (native vertex properties).

Parameters

_prop	mesh property
_outSize	[out] number of atoms in range 1..4, set to 0 if test failed

Returns

address of property data, 0 if test failed

template<class Mesh>

void ACG::SceneGraph::ACG::DrawMeshT< Mesh >::updateFull ( )

inline

request a full rebuild of the mesh

Definition at line 294 of file MeshNode2T.cc.

template<class Mesh>

void ACG::SceneGraph::ACG::DrawMeshT< Mesh >::updateFullVBO

(

)

update the full mesh vbo

the full vbo is the non-indexed version for drawing. it's not optimized for rendering at all and it uses lots of memory, so should only be used as last resort.

template<class Mesh>

void ACG::SceneGraph::ACG::DrawMeshT< Mesh >::updateGPUBuffers ( )

private

eventually update vertex and index buffers

template<class Mesh>

void ACG::SceneGraph::ACG::DrawMeshT< Mesh >::updatePerEdgeBuffers

(

)

Update all per edge drawing buffers.

The updated buffers are: vertex buffer ( 2 vertices per edge ), color buffer

template<class Mesh>

void ACG::SceneGraph::ACG::DrawMeshT< Mesh >::updatePickingAny

(

ACG::GLState &

_state

)

Call this function to update the color picking array.

This function calls the updatePickingVertices, updatePickingEdges, updatePickingVertices functions with an appropriate offset so that the standard arrays will be updated.

Parameters

_state

OpenGL state

template<class Mesh>

void ACG::SceneGraph::ACG::DrawMeshT< Mesh >::updatePickingAny_opt

(

ACG::GLState &

_state

)

Update color picking array for the shader implementation.

Parameters

_state

template<class Mesh>

void ACG::SceneGraph::ACG::DrawMeshT< Mesh >::updatePickingEdges	(	ACG::GLState &	_state,
		uint	_offset = 0
	)

Update color picking array for edges.

Call this function to update the color picking array The _offsett value can be used to shift the color in the resulting arrays. pick Any uses the offset to generate arrays for picking everything.

Parameters

_state
_offset

template<class Mesh>

void ACG::SceneGraph::ACG::DrawMeshT< Mesh >::updatePickingEdges_opt

(

ACG::GLState &

_state

)

Update color picking array for the shader implementation.

Parameters

_state

template<class Mesh>

void ACG::SceneGraph::ACG::DrawMeshT< Mesh >::updatePickingFaces

(

ACG::GLState &

_state

)

Update color picking array for faces.

Parameters

_state

template<class Mesh>

void ACG::SceneGraph::ACG::DrawMeshT< Mesh >::updatePickingFaces_opt

(

ACG::GLState &

_state

)

Update color picking array for the shader implementation.

Parameters

_state

template<class Mesh>

void ACG::SceneGraph::ACG::DrawMeshT< Mesh >::updatePickingVertices	(	ACG::GLState &	_state,
		uint	_offset = 0
	)

Call this function to update the color picking array The _offsett value can be used to shift the color in the resulting arrays. pick Any uses the offset to generate arrays for picking everything.

Parameters

_state
_offset

template<class Mesh>

void ACG::SceneGraph::ACG::DrawMeshT< Mesh >::updatePickingVertices_opt

(

ACG::GLState &

_state

)

Update color picking array for the shader implementation.

Parameters

_state

Member Data Documentation

template<class Mesh>

unsigned int* ACG::SceneGraph::ACG::DrawMeshT< Mesh >::invVertexMap_

private

inverse vertex map: original OpenMesh vertex index -> one vertex index in vbo this map is ambiguous and only useful for per vertex attributes rendering i.e. lines!

Definition at line 865 of file MeshNode2T.cc.

template<class Mesh>

std::string ACG::SceneGraph::ACG::DrawMeshT< Mesh >::perFaceTextureCoordinatePropertyName_

private

Property for the per face texture coordinates.

This property is used by the mesh for texture coordinate specification. If this is invalid, then the strip processor will ignore per face textures during processing.

Definition at line 925 of file MeshNode2T.cc.

template<class Mesh>

size_t ACG::SceneGraph::ACG::DrawMeshT< Mesh >::prevNumFaces_

private

used to track mesh changes, that require a full rebuild values directly taken from Mesh template

Definition at line 834 of file MeshNode2T.cc.

template<class Mesh>

std::string ACG::SceneGraph::ACG::DrawMeshT< Mesh >::textureIndexPropertyName_

private

Property for the per face texture index.

This property is used by the mesh for texture index specification. If this is invalid, then it is assumed that there is one or no active texture. This means that the generated strips will be independent of texture information.

Definition at line 918 of file MeshNode2T.cc.

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

• ACG/Scenegraph/MeshNode2T.cc