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osgUtil::DelaunayConstraint Class Reference
Inheritance diagram for osgUtil::DelaunayConstraint:
osg::Geometry osg::Drawable osg::Object osg::Referenced

Public Member Functions

 DelaunayConstraint ()
void addtriangle (int i1, int i2, int i3)
const osg::DrawElementsUIntgetTriangles () const
osg::DrawElementsUIntgetTriangles ()
osg::Vec3ArraygetPoints (const osg::Vec3Array *points)
osg::DrawElementsUIntmakeDrawable ()
void merge (DelaunayConstraint *dco)
void removeVerticesInside (const DelaunayConstraint *dco)
float windingNumber (const osg::Vec3 &testpoint) const
virtual bool contains (const osg::Vec3 &testpoint) const
virtual bool outside (const osg::Vec3 &testpoint) const
void handleOverlaps (void)
- Public Member Functions inherited from osg::Geometry
 Geometry ()
 Geometry (const Geometry &geometry, const CopyOp &copyop=CopyOp::SHALLOW_COPY)
virtual ObjectcloneType () const
virtual Objectclone (const CopyOp &copyop) const
virtual bool isSameKindAs (const Object *obj) const
virtual const char * libraryName () const
virtual const char * className () const
virtual GeometryasGeometry ()
virtual const GeometryasGeometry () const
bool empty () const
void setVertexArray (Array *array)
ArraygetVertexArray ()
const ArraygetVertexArray () const
void setVertexData (const ArrayData &arrayData)
ArrayDatagetVertexData ()
const ArrayDatagetVertexData () const
void setNormalBinding (AttributeBinding ab)
AttributeBinding getNormalBinding () const
void setNormalArray (Array *array)
ArraygetNormalArray ()
const ArraygetNormalArray () const
void setNormalData (const ArrayData &arrayData)
ArrayDatagetNormalData ()
const ArrayDatagetNormalData () const
void setColorBinding (AttributeBinding ab)
AttributeBinding getColorBinding () const
void setColorArray (Array *array)
ArraygetColorArray ()
const ArraygetColorArray () const
void setColorData (const ArrayData &arrayData)
ArrayDatagetColorData ()
const ArrayDatagetColorData () const
void setSecondaryColorBinding (AttributeBinding ab)
AttributeBinding getSecondaryColorBinding () const
void setSecondaryColorArray (Array *array)
ArraygetSecondaryColorArray ()
const ArraygetSecondaryColorArray () const
void setSecondaryColorData (const ArrayData &arrayData)
ArrayDatagetSecondaryColorData ()
const ArrayDatagetSecondaryColorData () const
void setFogCoordBinding (AttributeBinding ab)
AttributeBinding getFogCoordBinding () const
void setFogCoordArray (Array *array)
ArraygetFogCoordArray ()
const ArraygetFogCoordArray () const
void setFogCoordData (const ArrayData &arrayData)
ArrayDatagetFogCoordData ()
const ArrayDatagetFogCoordData () const
void setTexCoordArray (unsigned int unit, Array *)
ArraygetTexCoordArray (unsigned int unit)
const ArraygetTexCoordArray (unsigned int unit) const
void setTexCoordData (unsigned int index, const ArrayData &arrayData)
ArrayDatagetTexCoordData (unsigned int index)
const ArrayDatagetTexCoordData (unsigned int index) const
unsigned int getNumTexCoordArrays () const
ArrayDataListgetTexCoordArrayList ()
const ArrayDataListgetTexCoordArrayList () const
void setVertexAttribArray (unsigned int index, Array *array)
ArraygetVertexAttribArray (unsigned int index)
const ArraygetVertexAttribArray (unsigned int index) const
void setVertexAttribBinding (unsigned int index, AttributeBinding ab)
AttributeBinding getVertexAttribBinding (unsigned int index) const
void setVertexAttribNormalize (unsigned int index, GLboolean norm)
GLboolean getVertexAttribNormalize (unsigned int index) const
void setVertexAttribData (unsigned int index, const ArrayData &arrayData)
ArrayDatagetVertexAttribData (unsigned int index)
const ArrayDatagetVertexAttribData (unsigned int index) const
unsigned int getNumVertexAttribArrays () const
ArrayDataListgetVertexAttribArrayList ()
const ArrayDataListgetVertexAttribArrayList () const
void setPrimitiveSetList (const PrimitiveSetList &primitives)
PrimitiveSetListgetPrimitiveSetList ()
const PrimitiveSetListgetPrimitiveSetList () const
unsigned int getNumPrimitiveSets () const
PrimitiveSetgetPrimitiveSet (unsigned int pos)
const PrimitiveSetgetPrimitiveSet (unsigned int pos) const
bool addPrimitiveSet (PrimitiveSet *primitiveset)
bool setPrimitiveSet (unsigned int i, PrimitiveSet *primitiveset)
bool insertPrimitiveSet (unsigned int i, PrimitiveSet *primitiveset)
bool removePrimitiveSet (unsigned int i, unsigned int numElementsToRemove=1)
unsigned int getPrimitiveSetIndex (const PrimitiveSet *primitiveset) const
void setVertexIndices (IndexArray *array)
IndexArraygetVertexIndices ()
const IndexArraygetVertexIndices () const
void setNormalIndices (IndexArray *array)
IndexArraygetNormalIndices ()
const IndexArraygetNormalIndices () const
void setColorIndices (IndexArray *array)
IndexArraygetColorIndices ()
const IndexArraygetColorIndices () const
void setSecondaryColorIndices (IndexArray *array)
IndexArraygetSecondaryColorIndices ()
const IndexArraygetSecondaryColorIndices () const
void setFogCoordIndices (IndexArray *array)
IndexArraygetFogCoordIndices ()
const IndexArraygetFogCoordIndices () const
void setTexCoordIndices (unsigned int unit, IndexArray *)
IndexArraygetTexCoordIndices (unsigned int unit)
const IndexArraygetTexCoordIndices (unsigned int unit) const
void setVertexAttribIndices (unsigned int index, IndexArray *array)
IndexArraygetVertexAttribIndices (unsigned int index)
const IndexArraygetVertexAttribIndices (unsigned int index) const
virtual void setUseVertexBufferObjects (bool flag)
virtual void dirtyDisplayList ()
virtual void resizeGLObjectBuffers (unsigned int maxSize)
virtual void releaseGLObjects (State *state=0) const
bool getArrayList (ArrayList &arrayList) const
bool getDrawElementsList (DrawElementsList &drawElementsList) const
osg::VertexBufferObjectgetOrCreateVertexBufferObject ()
osg::ElementBufferObjectgetOrCreateElementBufferObject ()
void setFastPathHint (bool on)
bool getFastPathHint () const
bool areFastPathsUsed () const
bool computeFastPathsUsed ()
bool verifyBindings () const
void computeCorrectBindingsAndArraySizes ()
bool verifyArrays (std::ostream &out) const
bool suitableForOptimization () const
void copyToAndOptimize (Geometry &target)
bool containsSharedArrays () const
void duplicateSharedArrays ()
void computeInternalOptimizedGeometry ()
void removeInternalOptimizedGeometry ()
void setInternalOptimizedGeometry (osg::Geometry *geometry)
osg::GeometrygetInternalOptimizedGeometry ()
const osg::GeometrygetInternalOptimizedGeometry () const
virtual unsigned int getGLObjectSizeHint () const
virtual void compileGLObjects (RenderInfo &renderInfo) const
virtual void drawImplementation (RenderInfo &renderInfo) const
virtual bool supports (const Drawable::AttributeFunctor &) const
virtual void accept (Drawable::AttributeFunctor &af)
virtual bool supports (const Drawable::ConstAttributeFunctor &) const
virtual void accept (Drawable::ConstAttributeFunctor &af) const
virtual bool supports (const PrimitiveFunctor &) const
virtual void accept (PrimitiveFunctor &pf) const
virtual bool supports (const PrimitiveIndexFunctor &) const
virtual void accept (PrimitiveIndexFunctor &pf) const
- Public Member Functions inherited from osg::Drawable
 Drawable ()
 Drawable (const Drawable &drawable, const CopyOp &copyop=CopyOp::SHALLOW_COPY)
virtual void computeDataVariance ()
const ParentListgetParents () const
ParentList getParents ()
NodegetParent (unsigned int i)
const NodegetParent (unsigned int i) const
unsigned int getNumParents () const
MatrixList getWorldMatrices (const osg::Node *haltTraversalAtNode=0) const
void setStateSet (StateSet *stateset)
StateSetgetStateSet ()
const StateSetgetStateSet () const
StateSetgetOrCreateStateSet ()
void setInitialBound (const osg::BoundingBox &bbox)
const BoundingBoxgetInitialBound () const
void dirtyBound ()
const BoundingBoxgetBound () const
virtual BoundingBox computeBound () const
void setComputeBoundingBoxCallback (ComputeBoundingBoxCallback *callback)
ComputeBoundingBoxCallbackgetComputeBoundingBoxCallback ()
const ComputeBoundingBoxCallbackgetComputeBoundingBoxCallback () const
void setShape (Shape *shape)
ShapegetShape ()
const ShapegetShape () const
void setSupportsDisplayList (bool flag)
bool getSupportsDisplayList () const
void setUseDisplayList (bool flag)
bool getUseDisplayList () const
GLuint & getDisplayList (unsigned int contextID) const
bool getUseVertexBufferObjects () const
void draw (RenderInfo &renderInfo) const
virtual void setThreadSafeRefUnref (bool threadSafe)
virtual void setUpdateCallback (UpdateCallback *ac)
UpdateCallbackgetUpdateCallback ()
const UpdateCallbackgetUpdateCallback () const
bool requiresUpdateTraversal () const
virtual void setEventCallback (EventCallback *ac)
EventCallbackgetEventCallback ()
const EventCallbackgetEventCallback () const
bool requiresEventTraversal () const
virtual void setCullCallback (CullCallback *cc)
CullCallbackgetCullCallback ()
const CullCallbackgetCullCallback () const
virtual void setDrawCallback (DrawCallback *dc)
DrawCallbackgetDrawCallback ()
const DrawCallbackgetDrawCallback () const
- Public Member Functions inherited from osg::Object
 Object ()
 Object (bool threadSafeRefUnref)
 Object (const Object &, const CopyOp &copyop=CopyOp::SHALLOW_COPY)
virtual void setName (const std::string &name)
void setName (const char *name)
const std::string & getName () const
void setDataVariance (DataVariance dv)
DataVariance getDataVariance () const
void setUserDataContainer (osg::UserDataContainer *udc)
osg::UserDataContainergetUserDataContainer ()
const osg::UserDataContainergetUserDataContainer () const
osg::UserDataContainergetOrCreateUserDataContainer ()
virtual void setUserData (Referenced *obj)
virtual ReferencedgetUserData ()
virtual const ReferencedgetUserData () const
template<typename T >
bool getUserValue (const std::string &name, T &value) const
template<typename T >
void setUserValue (const std::string &name, const T &value)
- Public Member Functions inherited from osg::Referenced
 Referenced ()
 Referenced (bool threadSafeRefUnref)
 Referenced (const Referenced &)
Referencedoperator= (const Referenced &)
bool getThreadSafeRefUnref () const
OpenThreads::MutexgetRefMutex () const
int ref () const
int unref () const
int unref_nodelete () const
int referenceCount () const
ObserverSetgetObserverSet () const
ObserverSetgetOrCreateObserverSet () const
void addObserver (Observer *observer) const
void removeObserver (Observer *observer) const

Protected Types

typedef std::vector< int * > trilist

Protected Member Functions

virtual ~DelaunayConstraint ()
- Protected Member Functions inherited from osg::Geometry
Geometryoperator= (const Geometry &)
virtual ~Geometry ()
bool verifyBindings (const ArrayData &arrayData) const
bool verifyBindings (const Vec3ArrayData &arrayData) const
void computeCorrectBindingsAndArraySizes (ArrayData &arrayData, const char *arrayName)
void computeCorrectBindingsAndArraySizes (Vec3ArrayData &arrayData, const char *arrayName)
void addVertexBufferObjectIfRequired (osg::Array *array)
void addElementBufferObjectIfRequired (osg::PrimitiveSet *primitiveSet)
- Protected Member Functions inherited from osg::Drawable
Drawableoperator= (const Drawable &)
virtual ~Drawable ()
void setBound (const BoundingBox &bb) const
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 ()
- 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
ArrayData _vertexData
ArrayData _normalData
ArrayData _colorData
ArrayData _secondaryColorData
ArrayData _fogCoordData
ArrayDataList _texCoordList
ArrayDataList _vertexAttribList
bool _fastPath
bool _fastPathHint
ref_ptr< Geometry_internalOptimizedGeometry
- 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, BIND_PER_PRIMITIVE_SET, BIND_PER_PRIMITIVE,
  BIND_PER_VERTEX
}
typedef std::vector< ArrayDataArrayDataList
typedef std::vector< ref_ptr
< PrimitiveSet > > 
PrimitiveSetList
typedef std::vector< osg::Array * > ArrayList
typedef std::vector
< osg::DrawElements * > 
DrawElementsList
- Static Public Member Functions inherited from osg::Drawable
static GLuint generateDisplayList (unsigned int contextID, unsigned int sizeHint=0)
static void setMinimumNumberOfDisplayListsToRetainInCache (unsigned int minimum)
static unsigned int getMinimumNumberOfDisplayListsToRetainInCache ()
static void deleteDisplayList (unsigned int contextID, GLuint globj, unsigned int sizeHint=0)
static void flushAllDeletedDisplayLists (unsigned int contextID)
static void discardAllDeletedDisplayLists (unsigned int contextID)
static void flushDeletedDisplayLists (unsigned int contextID, double &availableTime)
static ExtensionsgetExtensions (unsigned int contextID, bool createIfNotInitalized)
static void setExtensions (unsigned int contextID, Extensions *extensions)
- Static Public Attributes inherited from osg::Geometry
static const ArrayData s_InvalidArrayData

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 ( )
inlineprotectedvirtual

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: