1 files changed, 110 insertions, 0 deletions
diff --git a/sci_gateway/cpp/opencv_imrect.cpp b/sci_gateway/cpp/opencv_imrect.cpp
new file mode 100644
index 0000000..d19f58e
--- /dev/null
+++ b/sci_gateway/cpp/opencv_imrect.cpp
@@ -0,0 +1,110 @@
+/********************************************************
+Author: Dhruti Shah
+********************************************************
+Usage: return_image = imrect(input_image, x_list, y_list)
+Example:
+  im = imrect(image, [x1 x2], [y1 y2])
+********************************************************/
+
+#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_imrect(char *fname, unsigned long fname_len)
+  {
+
+    SciErr sciErr;
+    int intErr = 0;
+    int iRowsR=0,iColsR=0,iColsC=0,iRowsC=0;
+    int *piAddr = NULL;
+    int *piAddr2  = NULL;
+    double *pstDataY = NULL;
+    double *pstDataX = NULL;
+    
+    //checking input argument
+    CheckInputArgument(pvApiCtx, 3, 3);
+    CheckOutputArgument(pvApiCtx, 1, 1) ;
+
+    // Get the input image from the Scilab environment
+    Mat image;
+    retrieveImage(image, 1);
+
+    // Get the address of 2nd argument, the x-coordinate list
+    sciErr = getVarAddressFromPosition(pvApiCtx, 2, &piAddr);
+    if (sciErr.iErr)
+    {
+        printError(&sciErr, 0);
+        return 0;
+    }
+
+    // Get the address of the 3rd agument, the y-coordinate list
+    sciErr = getVarAddressFromPosition(pvApiCtx, 3, &piAddr2);
+    if (sciErr.iErr)
+    {
+        printError(&sciErr, 0);
+        return 0;
+    }
+
+    // Get the x-coordinate list in the form of a matrix 
+    // No. of columns = 2
+    // No. of rows = 1
+    sciErr = getMatrixOfDouble(pvApiCtx, piAddr, &iRowsC, &iColsC, &pstDataX);
+    if(sciErr.iErr)
+    {
+        printError(&sciErr, 0);
+        return 0;
+    }
+
+    // Get the y-coordinate list in the form of a matrix
+    // No. of columns = 2
+    // No. of rows = 1
+    sciErr = getMatrixOfDouble(pvApiCtx, piAddr2, &iRowsR, &iColsR, &pstDataY);
+    if(sciErr.iErr)
+    {
+        printError(&sciErr, 0);
+        return 0;
+    }
+  
+    Point points[1][2];
+    
+    for (int i = 0; i < 2 ; i++)
+    {
+        if (pstDataY[i] < 0 || pstDataX[i] < 0)
+        {
+            sciprint("Coordinates cannot be negative.\n");
+            return 0;
+        }
+        else
+            points[0][i] = Point(pstDataX[i], pstDataY[i]);
+    }
+
+    rectangle(image,points[0][0],points[0][1],Scalar(0,0,0),2);
+
+    string tempstring = type2str(image.type());
+    char *checker;
+    checker = (char *)malloc(tempstring.size() + 1);
+    memcpy(checker, tempstring.c_str(), tempstring.size() + 1);
+    returnImage(checker, image, 1);
+    free(checker);
+
+    //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;
+
+  }
+/* ==================================================================== */
+}
+\ No newline at end of file