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SoGetPrimitiveCountAction.3coin2

NAME

SoGetPrimitiveCountAction -

The SoGetPrimitiveCountAction class counts the primitives in a scene.

Apply this action to a scene if you need to know the number of primitives present in a scenegraph, or parts of a scenegraph.

SYNOPSIS

#include <Inventor/actions/SoGetPrimitiveCountAction.h>

Inherits SoAction.

Public Member Functions

SoGetPrimitiveCountAction (void)

virtual ~SoGetPrimitiveCountAction ()

int getTriangleCount (void) const

int getLineCount (void) const

int getPointCount (void) const

int getTextCount (void) const

int getImageCount (void) const

SbBool containsNoPrimitives (void)

SbBool containsNonTriangleShapes (void)

SbBool is3DTextCountedAsTriangles (void)

void setCount3DTextAsTriangles (const SbBool flag)

SbBool canApproximateCount (void)

void setCanApproximate (const SbBool flag)

void setDecimationValue (SoDecimationTypeElement::Type type, float percentage=1.0)

SoDecimationTypeElement::Type getDecimationType (void)

float getDecimationPercentage (void)

void addNumTriangles (const int num)

void addNumLines (const int num)

void addNumPoints (const int num)

void addNumText (const int num)

void addNumImage (const int num)

void incNumTriangles (void)

void incNumLines (void)

void incNumPoints (void)

void incNumText (void)

void incNumImage (void)

Static Public Member Functions

static void initClass (void)

Protected Member Functions

virtual void beginTraversal (SoNode *node)

Detailed Description

The SoGetPrimitiveCountAction class counts the primitives in a scene.

Apply this action to a scene if you need to know the number of primitives present in a scenegraph, or parts of a scenegraph.

One common mistake to make when using this action is to think that it traverses just the parts currently in view, like SoGLRenderAction does. (SoGLRenderAction culls away the scenegraph parts outside the camera view volume and does not traverse those.) Like most other action classes, SoGetPrimitiveCountAction actually traverses the complete scenegraph, not just the parts currently in view.

Since:

Coin 1.0
TGS Inventor 2.5

Constructor & Destructor Documentation

SoGetPrimitiveCountAction::SoGetPrimitiveCountAction (void)Constructor.

SoGetPrimitiveCountAction::~SoGetPrimitiveCountAction () [virtual]The destructor.

Member Function Documentation

void SoGetPrimitiveCountAction::initClass (void) [static]Initializes the run-time type system for this class, and sets up the enabled elements and action method list.

Reimplemented from SoAction.

int SoGetPrimitiveCountAction::getTriangleCount (void) constReturns number of triangles in graph.

Referenced by SoIntersectionDetectionAction::apply().

int SoGetPrimitiveCountAction::getLineCount (void) constReturns number of lines in graph.

int SoGetPrimitiveCountAction::getPointCount (void) constReturns number of points in graph.

Note that by 'point', it is meant an actual point primitive (for rendering), such as in the SoPointSet shape node, not a polygon vertice. For counting the total number of polygon vertices in a scene (sub) graph, use instead the SoCallbackAction with the appropriate callback.

int SoGetPrimitiveCountAction::getTextCount (void) constReturns number of texts in the graph.

int SoGetPrimitiveCountAction::getImageCount (void) constReturns the number of images in the graph.

SbBool SoGetPrimitiveCountAction::containsNoPrimitives (void)Returns whether there are any primitives in graph or not.

SbBool SoGetPrimitiveCountAction::containsNonTriangleShapes (void)Returns whether there are non-triangular primitives in graph.

SbBool SoGetPrimitiveCountAction::is3DTextCountedAsTriangles (void)Returns whether SoText3 nodes is counted as triangles or text.

See also:

is3DTextCountedAsTriangles()

Referenced by SoText3::getPrimitiveCount(), and SoAsciiText::getPrimitiveCount().

void SoGetPrimitiveCountAction::setCount3DTextAsTriangles (const SbBool flag)Sets whether SoText3 nodes are counted as the triangles of the fonts in the text strings or the text itself. The default is to count as triangles.

See also:

is3DTextCountedAsTriangles()

SbBool SoGetPrimitiveCountAction::canApproximateCount (void)Returns whether shapes can use an approximate value when counting primitives. This is faster than doing an accurate count. The default is to not approximate.

See also:

setCanApproximate()

Referenced by SoTriangleStripSet::getPrimitiveCount(), SoLineSet::getPrimitiveCount(), SoIndexedTriangleStripSet::getPrimitiveCount(), SoIndexedLineSet::getPrimitiveCount(), SoIndexedFaceSet::getPrimitiveCount(), and SoFaceSet::getPrimitiveCount().

void SoGetPrimitiveCountAction::setCanApproximate (const SbBool flag)Sets whether shapes can do an approximate count.

See also:

canApproximateCount()

void SoGetPrimitiveCountAction::setDecimationValue (SoDecimationTypeElement::Type type, float percentage = 1.0)Set up the decimation parameters for the traversal.

On-the-fly decimation is supported in Coin yet, so this call will not have any effect until this feature has been implemented.

SoDecimationTypeElement::Type SoGetPrimitiveCountAction::getDecimationType (void)Returns decimation type used during the traversal count.

float SoGetPrimitiveCountAction::getDecimationPercentage (void)Returns decimation percentage used during the traversal count.

void SoGetPrimitiveCountAction::addNumTriangles (const int num)Adds num triangles to total count. Used by node instances in the scene graph during traversal.

Referenced by SoTriangleStripSet::getPrimitiveCount(), SoSphere::getPrimitiveCount(), SoQuadMesh::getPrimitiveCount(), SoIndexedTriangleStripSet::getPrimitiveCount(), SoIndexedFaceSet::getPrimitiveCount(), SoFaceSet::getPrimitiveCount(), SoCylinder::getPrimitiveCount(), SoCube::getPrimitiveCount(), SoCone::getPrimitiveCount(), and SoAsciiText::getPrimitiveCount().

void SoGetPrimitiveCountAction::addNumLines (const int num)Adds num lines to total count. Used by node instances in the scene graph during traversal.

Referenced by SoLineSet::getPrimitiveCount(), and SoIndexedLineSet::getPrimitiveCount().

void SoGetPrimitiveCountAction::addNumPoints (const int num)Adds num points to total count. Used by node instances in the scene graph during traversal.

Referenced by SoPointSet::getPrimitiveCount().

void SoGetPrimitiveCountAction::addNumText (const int num)Adds num texts to total count. Used by node instances in the scene graph during traversal.

Referenced by SoText3::getPrimitiveCount(), SoText2::getPrimitiveCount(), and SoAsciiText::getPrimitiveCount().

void SoGetPrimitiveCountAction::addNumImage (const int num)Adds num texture image maps to total count. Used by node instances in the scene graph during traversal.

Referenced by SoMarkerSet::getPrimitiveCount().

void SoGetPrimitiveCountAction::incNumTriangles (void)Adds a single triangle to the total count. Used by node instances in the scene graph during traversal.

Referenced by SoShape::invokeTriangleCallbacks().

void SoGetPrimitiveCountAction::incNumLines (void)Adds a single line to the total count. Used by node instances in the scene graph during traversal.

Referenced by SoShape::invokeLineSegmentCallbacks().

void SoGetPrimitiveCountAction::incNumPoints (void)Adds a single point to the total count. Used by node instances in the scene graph during traversal.

Referenced by SoShape::invokePointCallbacks().

void SoGetPrimitiveCountAction::incNumText (void)Adds a single text to the total count. Used by node instances in the scene graph during traversal.

void SoGetPrimitiveCountAction::incNumImage (void)Adds a single texture image map to the total count. Used by node instances in the scene graph during traversal.

Referenced by SoImage::getPrimitiveCount().

void SoGetPrimitiveCountAction::beginTraversal (SoNode * node) [protected, virtual]This virtual method is called from SoAction::apply(), and is the entry point for the actual scenegraph traversal.

It can be overridden to initialize the action at traversal start, for specific initializations in the action subclasses inheriting SoAction.

Default method just calls traverse(), which any overridden implementation of the method must do too (or call SoAction::beginTraversal()) to trigger the scenegraph traversal.

Reimplemented from SoAction.

References SoAction::traverse().

Author

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