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flightgear/Tools/Stripe_u/free.c

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1998-04-09 01:58:04 +00:00
/********************************************************************/
/* STRIPE: converting a polygonal model to triangle strips
Francine Evans, 1996.
SUNY @ Stony Brook
Advisors: Steven Skiena and Amitabh Varshney
*/
/********************************************************************/
/*---------------------------------------------------------------------*/
/* STRIPE: free.c
This file contains the code used to free the data structures.
*/
/*---------------------------------------------------------------------*/
#include <stdio.h>
#include <stdlib.h>
#include "polverts.h"
void ParseAndFreeList( ListHead *pListHead )
{
PLISTINFO value;
register int c,num;
/* Freeing a linked list */
num = NumOnList(pListHead);
for (c = 0; c< num; c++)
value = RemHead(pListHead);
}
void FreePolygonNode( PF_VERTS pfVerts)
{
/* Free a vertex node */
if ( pfVerts->pPolygon )
free( pfVerts->pPolygon );
free( pfVerts );
}
void Free_Strips()
{
P_STRIPS temp = NULL;
/* Free strips data structure */
if (strips[0] == NULL)
return;
else
ParseAndFreeList(strips[0]);
}
void FreeFaceNode( PF_FACES pfFaces)
{
/* Free face node */
if ( pfFaces->pPolygon )
free( pfFaces->pPolygon );
free( pfFaces );
}
void FreeFaceTable(int nSize)
{
register int nIndex;
for ( nIndex=0; nIndex < nSize; nIndex++ )
{
if ( PolFaces[nIndex] != NULL )
ParseAndFreeList( PolFaces[nIndex] );
}
free( PolFaces );
}
void FreeEdgeTable(int nSize)
{
register int nIndex;
for ( nIndex=0; nIndex < nSize; nIndex++ )
{
if ( PolEdges[nIndex] != NULL )
ParseAndFreeList( PolEdges[nIndex] );
}
free( PolEdges );
}
void Free_All_Strips()
{
ListHead *pListHead;
register int y;
for (y =0; ; y++)
{
pListHead = all_strips[y];
if (pListHead == NULL)
return;
else
ParseAndFreeList(all_strips[y]);
}
}
void End_Face_Struct(int numfaces)
{
FreeFaceTable(numfaces);
}
void End_Edge_Struct(int numverts)
{
FreeEdgeTable(numverts);
}