OrderSegments.cpp File Reference

#include "./triangle.h"

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Functions
int	OrderSegments (int **psegments, int nseg, int *index, int nel)

Function Documentation

OrderSegments()

int OrderSegments	(	int **	psegments,
		int	nseg,
		int *	index,
		int	nel
	)

Definition at line 7 of file OrderSegments.cpp.

                                                              {
 
   /*vertex indices: */
   int A,B;
 
   /*element index*/
   int el;
 
   /*Recover segments: */
   int* segments=*psegments;
 
   for(int i=0;i<nseg;i++){
      A=segments[3*i+0];
      B=segments[3*i+1];
      el=segments[3*i+2]-1; //after AssociateSegmentToElement, el was a matlab index, we need the c index now.
 
      if (index[3*el+0]==A){
         if (index[3*el+2]==B){
            segments[3*i+0]=B;
            segments[3*i+1]=A;
         }
      }
      else if (index[3*el+1]==A){
         if (index[3*el+0]==B){
            segments[3*i+0]=B;
            segments[3*i+1]=A;
         }
      }
      else{
         if (index[3*el+1]==B){
            segments[3*i+0]=B;
            segments[3*i+1]=A;
         }
      }
   }
 
   /*Assign output pointers: */
   *psegments=segments;
   return 1;
}