directedLine.h File Reference

#include "sampledLine.h"

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Classes
class	directedLine

Enumerations
enum	{ INCREASING , DECREASING }

Functions
directedLine *	readAllPolygons (char *filename)
Int	compV2InY (Real A[2], Real B[2])
Int	compV2InX (Real A[2], Real B[2])

Enumeration Type Documentation

anonymous enum

anonymous enum

Enumerator
INCREASING
DECREASING

Definition at line 39 of file directedLine.h.

{INCREASING, DECREASING};

Function Documentation

compV2InX()

Int compV2InX	(	Real	A[2],
		Real	B[2]
	)

Definition at line 407 of file directedLine.cc.

{
  if(A[0] < B[0]) return -1;
  if(A[0] == B[0] && A[1] < B[1]) return -1;
  if(A[0] == B[0] && A[1] == B[1]) return 0;
  return 1;
}

Referenced by DBG_is_U_monotone(), findDiagonal_singleCuspX(), is_u_maximal(), is_u_minimal(), isCuspX(), monoTriangulationOpt(), monoTriangulationRecGenOpt(), and sampleMonoPoly().

compV2InY()

Int compV2InY	(	Real	A[2],
		Real	B[2]
	)

Definition at line 399 of file directedLine.cc.

{
  if(A[1] < B[1]) return -1;
  if(A[1] == B[1] && A[0] < B[0]) return -1;
  if(A[1] == B[1] && A[0] == B[0]) return 0;
  return 1;
}

Referenced by compChainHeadInY(), findTopAndBot(), monoPolyPart(), monoTriangulation(), monoTriangulationOpt(), monoTriangulationRec(), monoTriangulationRecGen(), sampleMonoPoly(), Slicer::slice_new(), and triangulateConvexPoly().

readAllPolygons()

directedLine * readAllPolygons

(

char *

filename

)

Definition at line 792 of file directedLine.cc.

{
  Int i,j;
  FILE* fp = fopen(filename, "r");
  Int nPolygons;
  int result;
 
  assert(fp);
  result = fscanf(fp, "%i", &nPolygons);
  assert(result != EOF);
  directedLine *ret = NULL;
 
  for(i=0; i<nPolygons; i++)
    {
      Int nEdges;
      result = fscanf(fp, "%i", &nEdges);
      assert(result != EOF);
      Real vert[2][2] = { { 0 } };
      Real VV[2][2];
      /*the first two vertices*/
      result = fscanf(fp, "%f", &(vert[0][0]));
      assert(result != EOF);
      result = fscanf(fp, "%f", &(vert[0][1]));
      assert(result != EOF);
      result = fscanf(fp, "%f", &(vert[1][0]));
      assert(result != EOF);
      result = fscanf(fp, "%f", &(vert[1][1]));
      assert(result != EOF);
      VV[1][0] = vert[0][0];
      VV[1][1] = vert[0][1];
      sampledLine *sLine = new sampledLine(2, vert);
      directedLine *thisPoly = new directedLine(INCREASING, sLine);
thisPoly->rootLinkSet(NULL);
 
      directedLine *dLine;
      for(j=2; j<nEdges; j++)
    {
      vert[0][0]=vert[1][0];
      vert[0][1]=vert[1][1];
      result = fscanf(fp, "%f", &(vert[1][0]));
      assert(result != EOF);
      result = fscanf(fp, "%f", &(vert[1][1]));
      assert(result != EOF);
      sLine = new sampledLine(2,vert);
      dLine = new directedLine(INCREASING, sLine);
dLine->rootLinkSet(thisPoly);
      thisPoly->insert(dLine);
    }
 
      VV[0][0]=vert[1][0];
      VV[0][1]=vert[1][1];
      sLine = new sampledLine(2,VV);
      dLine = new directedLine(INCREASING, sLine);
dLine->rootLinkSet(thisPoly);
      thisPoly->insert(dLine);
 
      ret = thisPoly->insertPolygon(ret);
    }
  fclose(fp);
  return ret;
}