DelaunayTriangulator: Utility class that triangulates an irregular network of sample points. More...

Inheritance diagram for osgUtil::DelaunayConstraint:

Public Member Functions
	DelaunayConstraint ()

void	addtriangle (int i1, int i2, int i3)
	Each primitiveset is a list of vertices which may be closed by joining up to its start to make a loop. More...

const osg::DrawElementsUInt *	getTriangles () const
	Get the filling primitive. More...

osg::DrawElementsUInt *	getTriangles ()

osg::Vec3Array *	getPoints (const osg::Vec3Array *points)
	Call BEFORE makeDrawable to reorder points to make optimised set. More...

osg::DrawElementsUInt *	makeDrawable ()
	converts simple list of triangles into a drawarray. More...

void	merge (DelaunayConstraint *dco)
	Add vertices and constraint loops from dco Can be used to generate extra vertices where dco crosses 'this' using osgUtil::Tessellator to insert overlap vertices. More...

void	removeVerticesInside (const DelaunayConstraint *dco)
	remove from line the vertices that are inside dco More...

float	windingNumber (const osg::Vec3 &testpoint) const
	return winding number as a float of loop around testpoint; may use multiple loops does not reject points on the edge or very very close to the edge More...

virtual bool	contains (const osg::Vec3 &testpoint) const
	true if testpoint is internal (or external) to constraint. More...

virtual bool	outside (const osg::Vec3 &testpoint) const

void	handleOverlaps (void)
	Tessellate the constraint loops so that the crossing points are interpolated and added to the contraints for the triangulation. More...

Public Member Functions inherited from osg::Geometry
	Geometry ()

	Geometry (const Geometry &geometry, const CopyOp &copyop=CopyOp::SHALLOW_COPY)
	Copy constructor using CopyOp to manage deep vs shallow copy. More...

virtual Object *	cloneType () const
	Clone the type of an object, with Object* return type. More...

virtual Object *	clone (const CopyOp &copyop) const
	Clone an object, with Object* return type. More...

virtual bool	isSameKindAs (const Object *obj) const

virtual const char *	libraryName () const
	return the name of the object's library. More...

virtual const char *	className () const
	return the name of the object's class type. More...

virtual Geometry *	asGeometry ()
	Convert 'this' into a Geometry pointer if Drawable is a Geometry, otherwise return 0. More...

virtual const Geometry *	asGeometry () const
	Convert 'const this' into a const Geometry pointer if Drawable is a Geometry, otherwise return 0. More...

bool	empty () const

void	setVertexArray (Array *array)

Array *	getVertexArray ()

const Array *	getVertexArray () const

void	setNormalArray (Array *array, osg::Array::Binding binding=osg::Array::BIND_UNDEFINED)

Array *	getNormalArray ()

const Array *	getNormalArray () const

void	setColorArray (Array *array, osg::Array::Binding binding=osg::Array::BIND_UNDEFINED)

Array *	getColorArray ()

const Array *	getColorArray () const

void	setSecondaryColorArray (Array *array, osg::Array::Binding binding=osg::Array::BIND_UNDEFINED)

Array *	getSecondaryColorArray ()

const Array *	getSecondaryColorArray () const

void	setFogCoordArray (Array *array, osg::Array::Binding binding=osg::Array::BIND_UNDEFINED)

Array *	getFogCoordArray ()

const Array *	getFogCoordArray () const

void	setTexCoordArray (unsigned int unit, Array *array, osg::Array::Binding binding=osg::Array::BIND_UNDEFINED)

Array *	getTexCoordArray (unsigned int unit)

const Array *	getTexCoordArray (unsigned int unit) const

unsigned int	getNumTexCoordArrays () const

ArrayList &	getTexCoordArrayList ()

const ArrayList &	getTexCoordArrayList () const

void	setVertexAttribArray (unsigned int index, Array *array, osg::Array::Binding binding=osg::Array::BIND_UNDEFINED)

Array *	getVertexAttribArray (unsigned int index)

const Array *	getVertexAttribArray (unsigned int index) const

unsigned int	getNumVertexAttribArrays () const

ArrayList &	getVertexAttribArrayList ()

const ArrayList &	getVertexAttribArrayList () const

void	setPrimitiveSetList (const PrimitiveSetList &primitives)

PrimitiveSetList &	getPrimitiveSetList ()

const PrimitiveSetList &	getPrimitiveSetList () const

unsigned int	getNumPrimitiveSets () const

PrimitiveSet *	getPrimitiveSet (unsigned int pos)

const PrimitiveSet *	getPrimitiveSet (unsigned int pos) const

bool	addPrimitiveSet (PrimitiveSet *primitiveset)
	Add a primitive set to the geometry. More...

bool	setPrimitiveSet (unsigned int i, PrimitiveSet *primitiveset)
	Set a primitive set to the specified position in geometry's primitive set list. More...

bool	insertPrimitiveSet (unsigned int i, PrimitiveSet *primitiveset)
	Insert a primitive set to the specified position in geometry's primitive set list. More...

bool	removePrimitiveSet (unsigned int i, unsigned int numElementsToRemove=1)
	Remove primitive set(s) from the specified position in geometry's primitive set list. More...

unsigned int	getPrimitiveSetIndex (const PrimitiveSet *primitiveset) const
	Get the index number of a primitive set, return a value between 0 and getNumPrimitiveSet()-1 if found, if not found then return getNumPrimitiveSet(). More...

bool	containsSharedArrays () const
	return true if any arrays are shared. More...

void	duplicateSharedArrays ()
	duplicate any shared arrays. More...

virtual void	setUseVertexBufferObjects (bool flag)
	When set to true, ignore the setUseDisplayList() settings, and hints to the drawImplementation method to use OpenGL vertex buffer objects for rendering. More...

virtual void	dirtyDisplayList ()
	Force a recompile on next draw() of any OpenGL display list associated with this geoset. More...

virtual void	resizeGLObjectBuffers (unsigned int maxSize)
	Resize any per context GLObject buffers to specified size. More...

virtual void	releaseGLObjects (State *state=0) const
	If State is non-zero, this function releases OpenGL objects for the specified graphics context. More...

bool	getArrayList (ArrayList &arrayList) const

bool	getDrawElementsList (DrawElementsList &drawElementsList) const

osg::VertexBufferObject *	getOrCreateVertexBufferObject ()

osg::ElementBufferObject *	getOrCreateElementBufferObject ()

virtual unsigned int	getGLObjectSizeHint () const
	Return the estimated size of GLObjects (display lists/vertex buffer objects) that are associated with this drawable. More...

virtual void	compileGLObjects (RenderInfo &renderInfo) const
	Immediately compile this `Drawable` into an OpenGL Display List/VertexBufferObjects. More...

virtual void	drawImplementation (RenderInfo &renderInfo) const
	Draw Geometry directly ignoring an OpenGL display list which could be attached. More...

virtual bool	supports (const Drawable::AttributeFunctor &) const
	Return true, osg::Geometry does support accept(Drawable::AttributeFunctor&). More...

virtual void	accept (Drawable::AttributeFunctor &af)
	Accept an Drawable::AttributeFunctor and call its methods to tell it about the internal attributes that this Drawable has. More...

virtual bool	supports (const Drawable::ConstAttributeFunctor &) const
	Return true, osg::Geometry does support accept(Drawable::ConstAttributeFunctor&). More...

virtual void	accept (Drawable::ConstAttributeFunctor &af) const
	Accept a Drawable::ConstAttributeFunctor and call its methods to tell it about the internal attributes that this Drawable has. More...

virtual bool	supports (const PrimitiveFunctor &) const
	Return true, osg::Geometry does support accept(PrimitiveFunctor&). More...

virtual void	accept (PrimitiveFunctor &pf) const
	Accept a PrimitiveFunctor and call its methods to tell it about the internal primitives that this Drawable has. More...

virtual bool	supports (const PrimitiveIndexFunctor &) const
	Return true, osg::Geometry does support accept(PrimitiveIndexFunctor&). More...

virtual void	accept (PrimitiveIndexFunctor &pf) const
	Accept a PrimitiveFunctor and call its methods to tell it about the internal primitives that this Drawable has. More...

bool	containsDeprecatedData () const
	Return true if the deprecated use array indicies or BIND_PER_PRIMITIVE binding has been assigned to arrays. More...

bool	checkForDeprecatedData ()
	fallback for deprecated functionality. More...

void	fixDeprecatedData ()
	fallback for deprecated functionality. More...

void	setNormalBinding (AttributeBinding ab)
	deprecated, use array->set*Binding(..). More...

void	setColorBinding (AttributeBinding ab)

void	setSecondaryColorBinding (AttributeBinding ab)

void	setFogCoordBinding (AttributeBinding ab)

void	setVertexAttribBinding (unsigned int index, AttributeBinding ab)

AttributeBinding	getNormalBinding () const
	deprecated, use array->get*Binding(..). More...

AttributeBinding	getColorBinding () const

AttributeBinding	getSecondaryColorBinding () const

AttributeBinding	getFogCoordBinding () const

AttributeBinding	getVertexAttribBinding (unsigned int index) const

void	setVertexAttribNormalize (unsigned int index, GLboolean norm)
	deprecated, use array->set*Normalize(..). More...

GLboolean	getVertexAttribNormalize (unsigned int index) const
	deprecated, use array->get*Normalize(..). More...

Public Member Functions inherited from osg::Drawable
	Drawable ()

	Drawable (const Drawable &drawable, const CopyOp &copyop=CopyOp::SHALLOW_COPY)
	Copy constructor using CopyOp to manage deep vs shallow copy. More...

virtual void	computeDataVariance ()
	Compute the DataVariance based on an assessment of callback etc. More...

const ParentList &	getParents () const
	Get the parent list of drawable. More...

ParentList	getParents ()
	Get the a copy of parent list of node. More...

Node *	getParent (unsigned int i)
	Get a single parent of Drawable. More...

const Node *	getParent (unsigned int i) const
	Get a single const parent of Drawable. More...

unsigned int	getNumParents () const
	Get the number of parents of node. More...

MatrixList	getWorldMatrices (const osg::Node *haltTraversalAtNode=0) const
	Get the list of matrices that transform this node from local coordinates to world coordinates. More...

void	setStateSet (StateSet *stateset)
	Set the StateSet attached to the Drawable. More...

StateSet *	getStateSet ()
	Get the attached StateSet. More...

const StateSet *	getStateSet () const
	Get the attached const StateSet. More...

StateSet *	getOrCreateStateSet ()
	Get the attached const StateSet, if one is not already attached create one, attach it to the drawable and return a pointer to it. More...

void	setInitialBound (const osg::BoundingBox &bbox)
	Set the initial bounding volume to use when computing the overall bounding volume. More...

const BoundingBox &	getInitialBound () const
	Set the initial bounding volume to use when computing the overall bounding volume. More...

void	dirtyBound ()
	Dirty the bounding box, forcing a computeBound() on the next call to getBound(). More...

const BoundingBox &	getBound () const
	Get BoundingBox of Drawable. More...

virtual BoundingBox	computeBound () const
	Compute the bounding box around Drawables's geometry. More...

void	setComputeBoundingBoxCallback (ComputeBoundingBoxCallback *callback)
	Set the compute bound callback to override the default computeBound. More...

ComputeBoundingBoxCallback *	getComputeBoundingBoxCallback ()
	Get the compute bound callback. More...

const ComputeBoundingBoxCallback *	getComputeBoundingBoxCallback () const
	Get the const compute bound callback. More...

void	setShape (Shape *shape)
	Set the Shape of the `Drawable`. More...

Shape *	getShape ()
	Get the Shape of the Drawable. More...

const Shape *	getShape () const
	Get the const Shape of the const Drawable. More...

void	setSupportsDisplayList (bool flag)
	Set the drawable so that it can or cannot be used in conjunction with OpenGL display lists. More...

bool	getSupportsDisplayList () const
	Get whether display lists are supported for this drawable instance. More...

void	setUseDisplayList (bool flag)
	When set to true, force the draw method to use OpenGL Display List for rendering. More...

bool	getUseDisplayList () const
	Return whether OpenGL display lists are being used for rendering. More...

GLuint &	getDisplayList (unsigned int contextID) const
	Return OpenGL display list for specified contextID. More...

bool	getUseVertexBufferObjects () const
	Return whether OpenGL vertex buffer objects should be used when supported by OpenGL driver. More...

void	draw (RenderInfo &renderInfo) const
	Draw OpenGL primitives. More...

virtual void	setThreadSafeRefUnref (bool threadSafe)
	Set whether to use a mutex to ensure ref() and unref() are thread safe. More...

virtual void	setUpdateCallback (UpdateCallback *ac)
	Set the UpdateCallback which allows users to attach customize the updating of an object during the update traversal. More...

UpdateCallback *	getUpdateCallback ()
	Get the non const UpdateCallback. More...

const UpdateCallback *	getUpdateCallback () const
	Get the const UpdateCallback. More...

bool	requiresUpdateTraversal () const
	Return whether this Drawable has update callbacks associated with it, and therefore must be traversed. More...

virtual void	setEventCallback (EventCallback *ac)
	Set the EventCallback which allows users to attach customize the updating of an object during the Event traversal. More...

EventCallback *	getEventCallback ()
	Get the non const EventCallback. More...

const EventCallback *	getEventCallback () const
	Get the const EventCallback. More...

bool	requiresEventTraversal () const
	Return whether this Drawable has event callbacks associated with it, and therefore must be traversed. More...

virtual void	setCullCallback (CullCallback *cc)
	Set the CullCallback which allows users to customize the culling of Drawable during the cull traversal. More...

CullCallback *	getCullCallback ()
	Get the non const CullCallback. More...

const CullCallback *	getCullCallback () const
	Get the const CullCallback. More...

virtual void	setDrawCallback (DrawCallback *dc)
	Set the DrawCallback which allows users to attach customize the drawing of existing Drawable object. More...

DrawCallback *	getDrawCallback ()
	Get the non const DrawCallback. More...

const DrawCallback *	getDrawCallback () const
	Get the const DrawCallback. More...

Public Member Functions inherited from osg::Object
	Object ()
	Construct an object. More...

	Object (bool threadSafeRefUnref)

	Object (const Object &, const CopyOp &copyop=CopyOp::SHALLOW_COPY)
	Copy constructor, optional CopyOp object can be used to control shallow vs deep copying of dynamic data. More...

virtual void	setName (const std::string &name)
	Set the name of object using C++ style string. More...

void	setName (const char *name)
	Set the name of object using a C style string. More...

const std::string &	getName () const
	Get the name of object. More...

void	setDataVariance (DataVariance dv)
	Set the data variance of this object. More...

DataVariance	getDataVariance () const
	Get the data variance of this object. More...

void	setUserDataContainer (osg::UserDataContainer *udc)
	set the UserDataContainer object. More...

osg::UserDataContainer *	getUserDataContainer ()
	get the UserDataContainer attached to this object. More...

const osg::UserDataContainer *	getUserDataContainer () const
	get the const UserDataContainer attached to this object. More...

osg::UserDataContainer *	getOrCreateUserDataContainer ()
	Convinience method that returns the UserDataContainer, and if one doesn't already exist creates and assigns a DefaultUserDataContainer to the Object and then return this new UserDataContainer. More...

virtual void	setUserData (Referenced *obj)
	Set user data, data must be subclassed from Referenced to allow automatic memory handling. More...

virtual Referenced *	getUserData ()
	Get user data. More...

virtual const Referenced *	getUserData () const
	Get const user data. More...

template<typename T >
bool	getUserValue (const std::string &name, T &value) const
	Convinience method that casts the named UserObject to osg::TemplateValueObject<T> and gets the value. More...

template<typename T >
void	setUserValue (const std::string &name, const T &value)
	Convinience method that creates the osg::TemplateValueObject<T> to store the specified value and adds it as a named UserObject. More...

Public Member Functions inherited from osg::Referenced
	Referenced ()

	Referenced (bool threadSafeRefUnref)

	Referenced (const Referenced &)

Referenced &	operator= (const Referenced &)

bool	getThreadSafeRefUnref () const
	Get whether a mutex is used to ensure ref() and unref() are thread safe. More...

OpenThreads::Mutex *	getRefMutex () const
	Get the mutex used to ensure thread safety of ref()/unref(). More...

int	ref () const
	Increment the reference count by one, indicating that this object has another pointer which is referencing it. More...

int	unref () const
	Decrement the reference count by one, indicating that a pointer to this object is no longer referencing it. More...

int	unref_nodelete () const
	Decrement the reference count by one, indicating that a pointer to this object is no longer referencing it. More...

int	referenceCount () const
	Return the number of pointers currently referencing this object. More...

ObserverSet *	getObserverSet () const
	Get the ObserverSet if one is attached, otherwise return NULL. More...

ObserverSet *	getOrCreateObserverSet () const
	Get the ObserverSet if one is attached, otherwise create an ObserverSet, attach it, then return this newly created ObserverSet. More...

void	addObserver (Observer *observer) const
	Add a Observer that is observing this object, notify the Observer when this object gets deleted. More...

void	removeObserver (Observer *observer) const
	Remove Observer that is observing this object. More...

Protected Types
typedef std::vector< int * >	trilist

Protected Types inherited from osg::Drawable
typedef osg::buffered_value < GLuint >	GLObjectList

Protected Member Functions
virtual	~DelaunayConstraint ()

Protected Member Functions inherited from osg::Geometry
Geometry &	operator= (const Geometry &)

virtual	~Geometry ()

void	addVertexBufferObjectIfRequired (osg::Array *array)

void	addElementBufferObjectIfRequired (osg::PrimitiveSet *primitiveSet)

Protected Member Functions inherited from osg::Drawable
Drawable &	operator= (const Drawable &)

virtual	~Drawable ()

void	setBound (const BoundingBox &bb) const
	set the bounding box . More...

void	addParent (osg::Node *node)

void	removeParent (osg::Node *node)

void	setNumChildrenRequiringUpdateTraversal (unsigned int num)

unsigned int	getNumChildrenRequiringUpdateTraversal () const

void	setNumChildrenRequiringEventTraversal (unsigned int num)

unsigned int	getNumChildrenRequiringEventTraversal () const

Protected Member Functions inherited from osg::Object
virtual	~Object ()
	Object destructor. More...

Protected Member Functions inherited from osg::Referenced
virtual	~Referenced ()

void	signalObserversAndDelete (bool signalDelete, bool doDelete) const

void	deleteUsingDeleteHandler () const

Protected Attributes
trilist	_interiorTris

osg::ref_ptr < osg::DrawElementsUInt >	prim_tris_

Protected Attributes inherited from osg::Geometry
PrimitiveSetList	_primitives

osg::ref_ptr< Array >	_vertexArray

osg::ref_ptr< Array >	_normalArray

osg::ref_ptr< Array >	_colorArray

osg::ref_ptr< Array >	_secondaryColorArray

osg::ref_ptr< Array >	_fogCoordArray

ArrayList	_texCoordList

ArrayList	_vertexAttribList

bool	_containsDeprecatedData

Protected Attributes inherited from osg::Drawable
ParentList	_parents

ref_ptr< StateSet >	_stateset

BoundingBox	_initialBound

ref_ptr < ComputeBoundingBoxCallback >	_computeBoundCallback

BoundingBox	_boundingBox

bool	_boundingBoxComputed

ref_ptr< Shape >	_shape

bool	_supportsDisplayList

bool	_useDisplayList

bool	_supportsVertexBufferObjects

bool	_useVertexBufferObjects

GLObjectList	_globjList

ref_ptr< UpdateCallback >	_updateCallback

unsigned int	_numChildrenRequiringUpdateTraversal

ref_ptr< EventCallback >	_eventCallback

unsigned int	_numChildrenRequiringEventTraversal

ref_ptr< CullCallback >	_cullCallback

ref_ptr< DrawCallback >	_drawCallback

Protected Attributes inherited from osg::Object
std::string	_name

DataVariance	_dataVariance

osg::UserDataContainer *	_userDataContainer

Protected Attributes inherited from osg::Referenced
OpenThreads::AtomicPtr	_observerSet

OpenThreads::Atomic	_refCount

Additional Inherited Members
Public Types inherited from osg::Geometry
enum	AttributeBinding { BIND_OFF =0, BIND_OVERALL =1, BIND_PER_PRIMITIVE_SET =2, BIND_PER_VERTEX =4 }
	deprecated, Same values as Array::Binding. More...

typedef std::vector < osg::ref_ptr< osg::Array > >	ArrayList

typedef std::vector< ref_ptr < PrimitiveSet > >	PrimitiveSetList

typedef std::vector < osg::DrawElements * >	DrawElementsList

Public Types inherited from osg::Drawable
enum	AttributeTypes { VERTICES = 0, WEIGHTS = 1, NORMALS = 2, COLORS = 3, SECONDARY_COLORS = 4, FOG_COORDS = 5, ATTRIBUTE_6 = 6, ATTRIBUTE_7 = 7, TEXTURE_COORDS = 8, TEXTURE_COORDS_0 = TEXTURE_COORDS, TEXTURE_COORDS_1 = TEXTURE_COORDS_0+1, TEXTURE_COORDS_2 = TEXTURE_COORDS_0+2, TEXTURE_COORDS_3 = TEXTURE_COORDS_0+3, TEXTURE_COORDS_4 = TEXTURE_COORDS_0+4, TEXTURE_COORDS_5 = TEXTURE_COORDS_0+5, TEXTURE_COORDS_6 = TEXTURE_COORDS_0+6, TEXTURE_COORDS_7 = TEXTURE_COORDS_0+7 }

typedef std::vector< Node * >	ParentList
	A vector of osg::Node pointers which is used to store the parent(s) of drawable. More...

typedef unsigned int	AttributeType

Public Types inherited from osg::Object
enum	DataVariance { DYNAMIC, STATIC, UNSPECIFIED }

Static Public Member Functions inherited from osg::Drawable
static GLuint	generateDisplayList (unsigned int contextID, unsigned int sizeHint=0)
	Return a OpenGL display list handle a newly generated or reused from display list cache. More...

static void	setMinimumNumberOfDisplayListsToRetainInCache (unsigned int minimum)
	Set the minimum number of display lists to retain in the deleted display list cache. More...

static unsigned int	getMinimumNumberOfDisplayListsToRetainInCache ()
	Get the minimum number of display lists to retain in the deleted display list cache. More...

static void	deleteDisplayList (unsigned int contextID, GLuint globj, unsigned int sizeHint=0)
	Use deleteDisplayList instead of glDeleteList to allow OpenGL display list to be cached until they can be deleted by the OpenGL context in which they were created, specified by contextID. More...

static void	flushAllDeletedDisplayLists (unsigned int contextID)
	Flush all the cached display list which need to be deleted in the OpenGL context related to contextID. More...

static void	discardAllDeletedDisplayLists (unsigned int contextID)
	Flush all the cached display list which need to be deleted in the OpenGL context related to contextID. More...

static void	flushDeletedDisplayLists (unsigned int contextID, double &availableTime)
	Flush the cached display list which need to be deleted in the OpenGL context related to contextID. More...

static Extensions *	getExtensions (unsigned int contextID, bool createIfNotInitalized)
	Function to call to get the extension of a specified context. More...

static void	setExtensions (unsigned int contextID, Extensions *extensions)
	setExtensions allows users to override the extensions across graphics contexts. More...

Static Public Member Functions inherited from osg::Referenced
static OpenThreads::Mutex *	getGlobalReferencedMutex ()
	Get the optional global Referenced mutex, this can be shared between all osg::Referenced. More...

static void	setThreadSafeReferenceCounting (bool enableThreadSafeReferenceCounting)
	Set whether reference counting should use a mutex for thread safe reference counting. More...

static bool	getThreadSafeReferenceCounting ()
	Get whether reference counting is active. More...

static void	setDeleteHandler (DeleteHandler *handler)
	Set a DeleteHandler to which deletion of all referenced counted objects will be delegated. More...

static DeleteHandler *	getDeleteHandler ()
	Get a DeleteHandler. More...

Static Public Attributes inherited from osg::Drawable
static unsigned int	s_numberDrawablesReusedLastInLastFrame

static unsigned int	s_numberNewDrawablesInLastFrame

static unsigned int	s_numberDeletedDrawablesInLastFrame

Detailed Description

DelaunayTriangulator: Utility class that triangulates an irregular network of sample points.

Just create a DelaunayTriangulator, assign it the sample point array and call its triangulate() method to start the triangulation. Then you can obtain the generated primitive by calling the getTriangles() method.

Add DelaunayConstraints (or derived class) to control the triangulation edges.

Member Typedef Documentation

typedef std::vector< int* > osgUtil::DelaunayConstraint::trilist

protected

Constructor & Destructor Documentation

osgUtil::DelaunayConstraint::DelaunayConstraint ( )

inline

virtual osgUtil::DelaunayConstraint::~DelaunayConstraint ( )

protectedvirtual

Member Function Documentation

void osgUtil::DelaunayConstraint::addtriangle	(	int	i1,
		int	i2,
		int	i3
	)

Each primitiveset is a list of vertices which may be closed by joining up to its start to make a loop.

Constraints should be simple lines, not crossing themselves. Constraints which cross other constraints can cause difficulties - see the example for methods of dealing with them. collect up indices of triangle from delaunay triangles. The delaunay triangles inside the DelaunayConstraint area can be used to fill the area or generate geometry that terrain follows the area in some way. These triangles can form a canopy or a field.

virtual bool osgUtil::DelaunayConstraint::contains ( const osg::Vec3 & testpoint ) const

virtual

true if testpoint is internal (or external) to constraint.

osg::Vec3Array* osgUtil::DelaunayConstraint::getPoints ( const osg::Vec3Array * points )

Call BEFORE makeDrawable to reorder points to make optimised set.

const osg::DrawElementsUInt* osgUtil::DelaunayConstraint::getTriangles ( ) const

inline

Get the filling primitive.

One: triangulate must have bneen called and two: triangle list is filled when DelaunayTriangulator::removeInternalTriangles is called. These return the triangles removed from the delaunay triangulation by DelaunayTriangulator::removeInternalTriangles.

osg::DrawElementsUInt* osgUtil::DelaunayConstraint::getTriangles ( )

inline

void osgUtil::DelaunayConstraint::handleOverlaps ( void )

Tessellate the constraint loops so that the crossing points are interpolated and added to the contraints for the triangulation.

osg::DrawElementsUInt* osgUtil::DelaunayConstraint::makeDrawable ( )

converts simple list of triangles into a drawarray.

void osgUtil::DelaunayConstraint::merge ( DelaunayConstraint * dco )

Add vertices and constraint loops from dco Can be used to generate extra vertices where dco crosses 'this' using osgUtil::Tessellator to insert overlap vertices.

virtual bool osgUtil::DelaunayConstraint::outside ( const osg::Vec3 & testpoint ) const

virtual

void osgUtil::DelaunayConstraint::removeVerticesInside ( const DelaunayConstraint * dco )

remove from line the vertices that are inside dco

float osgUtil::DelaunayConstraint::windingNumber ( const osg::Vec3 & testpoint ) const

return winding number as a float of loop around testpoint; may use multiple loops does not reject points on the edge or very very close to the edge

Member Data Documentation

trilist osgUtil::DelaunayConstraint::_interiorTris

protected

osg::ref_ptr<osg::DrawElementsUInt> osgUtil::DelaunayConstraint::prim_tris_

protected

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

osgUtil/DelaunayTriangulator

Public Member Functions

Protected Types

Protected Member Functions

Protected Attributes

Additional Inherited Members

Detailed Description

Member Typedef Documentation

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation