From a6df67e8bcd5159cde27556f4f6a315f8dc2215f Mon Sep 17 00:00:00 2001
From: shamikam
Date: Mon, 16 Jan 2017 02:56:17 +0530
Subject: First Commit

---
 sci_gateway/cpp/opencv_convexhull.cpp | 140 ++++++++++++++++++++++++++++++++++
 1 file changed, 140 insertions(+)
 create mode 100644 sci_gateway/cpp/opencv_convexhull.cpp

(limited to 'sci_gateway/cpp/opencv_convexhull.cpp')

diff --git a/sci_gateway/cpp/opencv_convexhull.cpp b/sci_gateway/cpp/opencv_convexhull.cpp
new file mode 100644
index 0000000..934fa20
--- /dev/null
+++ b/sci_gateway/cpp/opencv_convexhull.cpp
@@ -0,0 +1,140 @@
+/********************************************************
+    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;
+
+
+ }
+
+}
-- 
cgit