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/* ==================================================================== */
/* Author :Priyanka Hiranandani NIT Surat */
/* ==================================================================== */
/* Syntax : output_curve=approxpolyDP(input_curve,double epsilon, bool closed)*/
/* ==================================================================== */
#include <numeric>
#include "opencv2/core/core.hpp"
#include "opencv2/highgui/highgui.hpp"
#include "opencv2/opencv.hpp"
#include <iostream>
#include <sciprint.h>
using namespace cv;
using namespace std;
extern "C"
{
#include "api_scilab.h"
#include "Scierror.h"
#include "BOOL.h"
#include <localization.h>
#include "../common.h"
int approxpolyDP(char *fname, unsigned long fname_len)
{
// Error management variable
SciErr sciErr;
//variable info
int iRows = 0;
int iCols = 0;
int piRows = 0;
int piCols = 0;
int* piAddr = NULL;
int* piAddr2 = NULL;
int* piAddr3 = NULL;
int* piAddr4 = NULL;
int* piAddr5 = NULL;
int* piAddr6 = NULL;
int* piAddrNew = NULL;
int* piLen = NULL;
double *pstData = NULL;
char **pstData2 = NULL;
double *rrows;
double *rcols;
int noofitem;
double res;
double epsilon;
int error;
//checking input argument
CheckInputArgument(pvApiCtx,3,3);
//checking output argument
CheckOutputArgument(pvApiCtx, 1, 1);
//for first argument
// get Address of first input
sciErr =getVarAddressFromPosition(pvApiCtx,1,&piAddr);
//check for any error
if(sciErr.iErr)
{
printError(&sciErr, 0);
return 0;
}
//retrieve input array
//SciErr getMatrixOfDouble(void* _pvCtx, int* _piAddress, int* _piRows, int* _piCols, double** _pdblReal)
sciErr = getMatrixOfDouble(pvApiCtx, piAddr, &iRows, &iCols,&pstData);
if(sciErr.iErr)
{
printError(&sciErr, 0);
return 0;
}
int k=0;
vector<Point> contours;
for(int i=0;i<iCols;i++)
{
contours.push_back(Point2f(pstData[i],pstData[i+1])) ;
i++;
}
//retrieving second argument
sciErr = getVarAddressFromPosition(pvApiCtx,2,&piAddr2);
if (sciErr.iErr)
{
printError(&sciErr, 0);
return 0;
}
//this function will fetch value of sixth argument
error=getScalarDouble(pvApiCtx,piAddr2,&epsilon) ;
if(error!=0)
{
sciprint("error in retrieving second argument");
}
//retriving 3rd argument
sciErr = getVarAddressFromPosition(pvApiCtx,3,&piAddr3);
sciErr = getMatrixOfString(pvApiCtx, piAddr3, &iRows, &iCols, NULL, NULL);
if(sciErr.iErr)
{
printError(&sciErr, 0);
return 0;
}
piLen = (int*)malloc(sizeof(int) * iRows * iCols);
//second call to retrieve length of each string of first argument
sciErr = getMatrixOfString(pvApiCtx, piAddr3, &iRows, &iCols, piLen, NULL);
if(sciErr.iErr)
{
printError(&sciErr, 0);
return 0;
}
pstData2 = (char**)malloc(sizeof(char*) * iRows * iCols);
for(int i = 0 ; i < iRows * iCols ; i++)
{
pstData2[i] = (char*)malloc(sizeof(char) * (piLen[i] + 1));//+ 1 for null termination
}
//third call to retrieve data of each string of first argument
sciErr = getMatrixOfString(pvApiCtx, piAddr3, &iRows, &iCols, piLen, pstData2);
if(sciErr.iErr)
{
printError(&sciErr, 0);
return 0;
}
vector<Point> approx;
if(!strcmp("True",pstData2[0]))
{
approxPolyDP(contours, approx,epsilon, true);
}
else if(!strcmp("False",pstData2[0]))
{
approxPolyDP(contours, approx,epsilon, false);
}
double *m=(double *)malloc(2*(approx.size())*sizeof(double));
Point a1;
int j=0;
for(int i=0;i<approx.size();i++)
{
a1=approx[i];
m[j++]=a1.x; //basic concept of classes and constructor
m[j++]=a1.y;
}
//SciErr createMatrixOfUnsignedInteger8(void* _pvCtx, int _iVar, int _iRows, int _iCols, const unsigned char* _pucData8)
sciErr = createMatrixOfDouble(pvApiCtx, nbInputArgument(pvApiCtx) + 1,1,2*approx.size(),m);
if (sciErr.iErr)
{
printError(&sciErr, 0);
return 0;
}
////////// Return the output arguments to the Scilab engine //////////
AssignOutputVariable(pvApiCtx, 1) = nbInputArgument(pvApiCtx) + 1;
ReturnArguments(pvApiCtx);
return 0;
}
}
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