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/********************************************************
Author: Abhilasha Sancheti & Sukul Bagai
*********************************************************
hull = convexhull ( contour(vector<point>), clockwise(1/0) , returnpoints(1/0) )
********************************************************/
#include <numeric>
#include "opencv2/core/core.hpp"
#include "opencv2/highgui/highgui.hpp"
#include "opencv2/opencv.hpp"
#include <iostream>
using namespace cv;
using namespace std;
extern "C"
{
#include "api_scilab.h"
#include "Scierror.h"
#include "BOOL.h"
#include <localization.h>
#include <sciprint.h>
#include "../common.h"
int opencv_convexhull(char *fname, unsigned long fname_len)
{
SciErr sciErr;
int intErr=0;
int iRows=0,iCols=0;
int *piAddr1 = NULL;
int *piAddrNew = NULL;
int *piAddr2 = NULL;
int *piAddr3 = NULL;
double *pstData = NULL;
int i,j,k ;
double clkwise;
double returnpoints;
//checking input argument
CheckInputArgument(pvApiCtx, 3, 3);
CheckOutputArgument(pvApiCtx, 1, 1) ;
//retreive the contour parameter
sciErr = getVarAddressFromPosition(pvApiCtx,1,&piAddr1);
if (sciErr.iErr)
{
printError(&sciErr, 0);
return 0;
}
sciErr = getMatrixOfDouble(pvApiCtx, piAddr1, &iRows, &iCols,&pstData);
if(sciErr.iErr)
{
printError(&sciErr, 0);
return 0;
}
//cout<<*(pstData + 0*2 + 0)<<" "<<*(pstData + 0*2 + 1)<<endl;
//cout<<*(pstData + 1*2 + 2)<<" "<<*(pstData + 1*2 + 3);
///// store values in a contour
int rows = iRows;
vector<Point> cont1;
for ( i = 0 ; i < iRows ; i++)
{
Point pt(*(pstData + 0*iRows + i),*(pstData + 1*iRows + i));
cont1.push_back(pt);
}
sciErr = getVarAddressFromPosition(pvApiCtx,2,&piAddr2);
if (sciErr.iErr)
{
printError(&sciErr, 0);
return 0;
}
intErr = getScalarDouble(pvApiCtx, piAddr2 ,&clkwise);
if(intErr)
return intErr;
//// to retreive the value of returnpoint
sciErr = getVarAddressFromPosition(pvApiCtx,3,&piAddr3);
if (sciErr.iErr)
{
printError(&sciErr, 0);
return 0;
}
intErr = getScalarDouble(pvApiCtx, piAddr3,&returnpoints);
if(intErr)
return intErr;
bool clkWise, returnPoint;
/// setting clkwise parameter of function
if ( clkwise ==1)
clkWise = true;
else if (clkwise == 0)
clkWise = false;
else
{
clkWise = false;
sciprint("only 0/1 acceptable , taking 0 instead");
}
///// setting returnpoint parameter of function
if ( returnpoints ==1)
returnPoint = true;
else if (returnpoints == 0)
returnPoint = false;
else
{
returnPoint = true;
sciprint("only 0/1 acceptable , taking 1 instead");
}
vector<Point> hull;
convexHull(Mat(cont1), hull , clkWise , returnPoint);
int row = hull.size();
double *cor = (double *)malloc(row*2*sizeof(double));
for (int i=0;i<row;i++)
{
*(cor + i*2 +0)=hull[i].x;
cout<<hull[i].x<<" "<<hull[i].y;
*(cor + i*2 +1)=hull[i].y;
}
sciErr = createMatrixOfDouble(pvApiCtx, nbInputArgument(pvApiCtx) + 1, row, 2, cor);
if(sciErr.iErr)
{
printError(&sciErr, 0);
return 0;
}
//Assigning the list as the Output Variable
AssignOutputVariable(pvApiCtx, 1) = nbInputArgument(pvApiCtx) + 1;
//Returning the Output Variables as arguments to the Scilab environment
ReturnArguments(pvApiCtx);
return 0;
}
}
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