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SoNonIndexedShape

NAME

SoNonIndexedShape -

SYNOPSIS

#include <Inventor/nodes/SoNonIndexedShape.h>

Inherits SoVertexShape.

Inherited by SoFaceSet, SoLineSet, SoPointSet, SoQuadMesh, and SoTriangleStripSet.

Detailed Description

The SoNonIndexedShape class is the superclass for all non-indexed vertex based shapes.

It contains the (now obsoleted) startIndex field and a convenience method for calculating the bounding box.

Public Member Functions

virtual SoType getTypeId (void) const

Static Public Member Functions

static SoType getClassTypeId (void)

static void initClass (void)

Public Attributes

SoSFInt32 startIndex

Protected Member Functions

virtual const SoFieldData * getFieldData (void) const

SoNonIndexedShape (void)

virtual ~SoNonIndexedShape ()

void computeCoordBBox (SoAction *action, int numVertices, SbBox3f &box, SbVec3f &center)

void fixNumVerticesPointers (SoState *state, const int32_t *&start, const int32_t *&end, int32_t *dummyarray) const

Static Protected Member Functions

static const SoFieldData ** getFieldDataPtr (void)

Constructor & Destructor Documentation

SoNonIndexedShape::SoNonIndexedShape (void) [protected]

Constructor.

References startIndex.

SoNonIndexedShape::~SoNonIndexedShape () [protected, virtual]

Destructor.

Member Function Documentation

SoType SoNonIndexedShape::getClassTypeId (void) [static]

This static method returns the SoType object associated with objects of this class.

Reimplemented from SoVertexShape.

Reimplemented in SoFaceSet, SoLineSet, SoMarkerSet, SoPointSet, SoQuadMesh, and SoTriangleStripSet.

SoType SoNonIndexedShape::getTypeId (void) const [virtual]

Returns the type identification of an object derived from a class inheriting SoBase. This is used for run-time type checking and 'downward' casting.

Usage example:

   void foo(SoNode * node)
   {
     if (node->getTypeId() == SoFile::getClassTypeId()) {
       SoFile * filenode = (SoFile *)node;  // safe downward cast, knows the type
     }
     else if (node->getTypeId().isOfType(SoGroup::getClassTypeId())) {
       SoGroup * group = (SoGroup *)node;  // safe downward cast, knows the type
     }
   }
 

For application programmers wanting to extend the library with new nodes, engines, nodekits, draggers or others: this method needs to be overridden in all subclasses. This is typically done as part of setting up the full type system for extension classes, which is usually accomplished by using the pre-defined macros available through for instance Inventor/nodes/SoSubNode.h (SO_NODE_INIT_CLASS and SO_NODE_CONSTRUCTOR for node classes), Inventor/engines/SoSubEngine.h (for engine classes) and so on.

For more information on writing Coin extensions, see the class documentation of the toplevel superclasses for the various class groups.

Reimplemented from SoVertexShape.

Reimplemented in SoFaceSet, SoLineSet, SoMarkerSet, SoPointSet, SoQuadMesh, and SoTriangleStripSet.

const SoFieldData ** SoNonIndexedShape::getFieldDataPtr (void) [static, protected]

This API member is considered internal to the library, as it is not likely to be of interest to the application programmer.

Reimplemented from SoVertexShape.

Reimplemented in SoFaceSet, SoLineSet, SoMarkerSet, SoPointSet, SoQuadMesh, and SoTriangleStripSet.

const SoFieldData * SoNonIndexedShape::getFieldData (void) const [protected, virtual]

Returns a pointer to the class-wide field data storage object for this instance. If no fields are present, returns NULL.

Reimplemented from SoVertexShape.

Reimplemented in SoFaceSet, SoLineSet, SoMarkerSet, SoPointSet, SoQuadMesh, and SoTriangleStripSet.

void SoNonIndexedShape::initClass (void) [static]

Sets up initialization for data common to all instances of this class, like submitting necessary information to the Coin type system.

Reimplemented from SoVertexShape.

Reimplemented in SoFaceSet, SoLineSet, SoMarkerSet, SoPointSet, SoQuadMesh, and SoTriangleStripSet.

Referenced by SoNode::initClasses().

void SoNonIndexedShape::computeCoordBBox (SoAction * action, int numVertices, SbBox3f & box, SbVec3f & center) [protected]

This method is provided as a convenient means for the subclasses of this class to find their bounding box and center value.

The returned bounding box will enclose all vertices from startIndex up to startIndex + numVertices. If numVertices is less than zero, all vertices in the current coordinate element or vertex property node will be used in the calculation.

The center point will be calculated as the average of all the vertices in the bounding box.

Referenced by SoPointSet::initClass(), SoLineSet::~SoLineSet(), and SoQuadMesh::~SoQuadMesh().

void SoNonIndexedShape::fixNumVerticesPointers (SoState * state, const int32_t *& start, const int32_t *& end, int32_t * dummyarray) const [protected]

Convenience method that might adjust start and end pointers, which should point at the start and end of the numVertices array when calling this method. This takes care of the case where numVertices contains a single -1, and all coordinates in the state (or in the vertexProperty field) should be rendered as one primitive.

dummyarray should be a temporary array, with room for one integer.

Not part of the OIV API.

Referenced by SoTriangleStripSet::generateDefaultNormals(), SoFaceSet::generateDefaultNormals(), SoTriangleStripSet::generatePrimitives(), SoLineSet::generatePrimitives(), SoFaceSet::generatePrimitives(), SoTriangleStripSet::getPrimitiveCount(), SoLineSet::getPrimitiveCount(), SoFaceSet::getPrimitiveCount(), SoTriangleStripSet::GLRender(), SoLineSet::GLRender(), and SoFaceSet::GLRender().

Member Data Documentation

SoSFInt32 SoNonIndexedShape::startIndex

Coordinates are fetched from this index on. This field is now obsoleted, and is provided only for backward compatibility.

Referenced by SoTriangleStripSet::generateDefaultNormals(), SoQuadMesh::generateDefaultNormals(), SoFaceSet::generateDefaultNormals(), SoTriangleStripSet::generatePrimitives(), SoQuadMesh::generatePrimitives(), SoLineSet::generatePrimitives(), SoFaceSet::generatePrimitives(), SoPointSet::getPrimitiveCount(), SoTriangleStripSet::GLRender(), SoQuadMesh::GLRender(), SoLineSet::GLRender(), SoFaceSet::GLRender(), and SoNonIndexedShape().

Author

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