1 files changed, 130 insertions, 0 deletions
diff --git a/sci_gateway/cpp/opencv_imcrop.cpp b/sci_gateway/cpp/opencv_imcrop.cpp
new file mode 100644
index 0000000..d180c0a
--- /dev/null
+++ b/sci_gateway/cpp/opencv_imcrop.cpp
@@ -0,0 +1,130 @@
+/********************************************************
+Author: Sukul Bagai
+********************************************************/
+
+#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_imcrop(char *fname, unsigned long fname_len)
+  {
+
+    SciErr sciErr;
+    int intErr = 0;
+    int iRows=0,iCols=0;
+    int *piAddr = NULL;
+    int *piAddrNew = NULL;
+    int *piAddr2  = NULL;
+    int *piAddr3  = NULL;
+    int *piAddr4  = NULL;
+    int *piAddr5  = NULL;
+    int i,j,k;
+    double x, y, width, height;
+
+    //checking input argument
+    CheckInputArgument(pvApiCtx, 5, 5);
+    CheckOutputArgument(pvApiCtx, 1, 1) ;
+
+    Mat image;
+    retrieveImage(image, 1);
+
+    //for value of top-left x-coordinate
+    sciErr = getVarAddressFromPosition(pvApiCtx,2,&piAddr2);
+    if (sciErr.iErr)
+    {
+        printError(&sciErr, 0);
+        return 0;
+    }
+    intErr = getScalarDouble(pvApiCtx, piAddr2, &x);
+    if(intErr)
+    {
+        return intErr;
+    }   
+
+    //for value top-left y-coordinate
+    sciErr = getVarAddressFromPosition(pvApiCtx,3,&piAddr3);
+    if (sciErr.iErr)
+    {
+        printError(&sciErr, 0);
+        return 0;
+    }
+    intErr = getScalarDouble(pvApiCtx, piAddr3, &y);
+    if(intErr)
+    {
+        return intErr;
+    }
+
+    //for value of width
+    sciErr = getVarAddressFromPosition(pvApiCtx,4,&piAddr4);
+    if (sciErr.iErr)
+    {
+        printError(&sciErr, 0);
+        return 0;
+    }
+    intErr = getScalarDouble(pvApiCtx, piAddr4, &width);
+    if(intErr)
+    {
+        return intErr;
+    }   
+
+    //for value of height
+    sciErr = getVarAddressFromPosition(pvApiCtx,5,&piAddr5);
+    if (sciErr.iErr)
+    {
+        printError(&sciErr, 0);
+        return 0;
+    }
+    intErr = getScalarDouble(pvApiCtx, piAddr5, &height);
+    if(intErr)
+    {
+        return intErr;
+    }   
+
+    if(x>=image.cols || y>=image.rows || x<0 || y<0)
+    {
+        sciprint("Invalid x or y value\n");
+        return 0;
+    }
+    if(width<=0 || height<=0 || x+width > image.cols || y+height > image.rows)
+    {
+        sciprint("Invalid width or height value\n");
+        return 0;
+    }
+    //defining a temporary rectangle, that denotes the area that has to be cropped into the new image
+    Rect myROI(x, y, width, height);
+
+    // Crop the full image to that image contained by the rectangle myROI
+    // Note that this doesn't copy the data
+    Mat croppedRef(image, myROI);
+
+    Mat cropped;
+    // Copy the data into new matrix
+    croppedRef.copyTo(cropped);
+
+    string tempstring = type2str(cropped.type());
+    char *checker;
+    checker = (char *)malloc(tempstring.size() + 1);
+    memcpy(checker, tempstring.c_str(), tempstring.size() + 1);
+    returnImage(checker,cropped,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;
+
+  }
+/* ==================================================================== */
+}