Count Number of PfTypes in a Vega Object

How to count the number of pfNodes in a vgObject

Vega Code Example

This example function illustrates how to count the number of pfNode types with in vgObject and its sub-tree..

How to get the root pfNode from a vgObject
How to test if a pfNode is of a specific pfIsOfType using
How to get the number of pfGeoSets in a pfGeode
How to get the number of children for a pfNode using pfGetNumChildren
Show how to traverse a pfNode tree using recursion
How to test if a pfNode is a pfGeode node type
How to test if a pfNode is a pfGroup node type
How to test if a pfNode is a pfDCS node type
How to test if a pfNode is a pfSCS node type
How to test if a pfNode is a pfSeq node type
How to test if a pfNode is a pfLod node type
How to test if a pfNode is a pfBoard node type

#include "vg.h"          // Required for the standard Vega classes
#include "vgperf.h"      // Required for the vgGetXXXPfNode functions
#include "pf.h"          // Required for the standard Performer classes
#include "vgutil.h"
#include "pfutil.h"      // Required for pfFindNode

void

getpfNodeCountsinVegaObject( vgObject *obj ) {

// ########################################################

// #

// # Public Function

// #

// # Example funcion to show how to get the number of

// # of different pfNode types

// #

// ########################################################

// Sanity check we need an object

if( obj == NULL )

return;

// Retrieve the Objects root pfNode

pfNode *node = vgGetObjPfNode( obj );

if( node == NULL )

return;

int numNodes = 0;

numNodes = getNumberPfNodeTypes( node, pfGetNodeClassType(), numNodes );

int numGeodes = 0;

numGeodes = getNumberPfNodeTypes( node, pfGetGeodeClassType(), numGeodes );

int numGroups = 0;

numGroups = getNumberPfNodeTypes( node, pfGetGroupClassType(), numGroups );

int numDCS = 0;

numDCS = getNumberPfNodeTypes( node, pfGetDCSClassType(), numDCS );

int numSCS = 0;

numSCS = getNumberPfNodeTypes( node, pfGetSCSClassType(), numSCS );

int numSeq = 0;

numSeq = getNumberPfNodeTypes( node, pfGetSeqClassType(), numSeq );

int numLods = 0;

numLods = getNumberPfNodeTypes( node, pfGetLODClassType(), numLods );

int numBboard = 0;

numBboard = getNumberPfNodeTypes( node, pfGetBboardClassType(), numBboard );

} // getpfNodeCountsinVegaObject

int

getNumberPfNodeTypes( pfNode *node, pfType *nodeType, int nodeTotal ) {

// ##################################################################

// #

// # Public Function

// #

// # A simple Recursive function that will traverse the given

// # nodes tree and count all the pfNodeTypes requested

// #

// # Note this does not supported pfGeoSet see specic example

// # counting pfGeoSets

// #

// ##################################################################

// Sanity check we need a Node

if( node == NULL )

return nodeTotal;

if( pfIsOfType( node, nodeType )) {

nodeTotal++;

}

// Cycle through the children for this node

int numChildren = 0;

// Need to catch pfGeodes as they have no children and

// will cause a crash if pfGetNumChildren is called

if( !pfIsOfType( node, pfGetGeodeClassType()) )

numChildren = pfGetNumChildren ( node );

for ( int idx = 0; idx < numChildren; idx++ ) {

// Get the child node and recurse in to them

pfNode* childNode = pfGetChild( node, idx );

nodeTotal = getNumberPfNodeTypes( childNode,nodeType, nodeTotal );

}

return nodeTotal;

} // getNumberPfNodeType

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