convex hull converted to C++; other 2 functions in convhull.cpp are yet to be finished.

modules/imgproc/src/contours.cpp

@@ -1813,77 +1813,6 @@ double cv::matchShapes( InputArray _contour1,
 }
 
 
-void cv::convexHull( InputArray _points, OutputArray _hull, bool clockwise, bool returnPoints )
-{
-    Mat points = _points.getMat();
-    int nelems = points.checkVector(2), depth = points.depth();
-    CV_Assert(nelems >= 0 && (depth == CV_32F || depth == CV_32S));
-
-    if( nelems == 0 )
-    {
-        _hull.release();
-        return;
-    }
-
-    returnPoints = !_hull.fixedType() ? returnPoints : _hull.type() != CV_32S;
-    Mat hull(nelems, 1, returnPoints ? CV_MAKETYPE(depth, 2) : CV_32S);
-    CvMat _cpoints = points, _chull = hull;
-    cvConvexHull2(&_cpoints, &_chull, clockwise ? CV_CLOCKWISE : CV_COUNTER_CLOCKWISE, returnPoints);
-    _hull.create(_chull.rows, 1, hull.type(), -1, true);
-    Mat dhull = _hull.getMat(), shull(dhull.size(), dhull.type(), hull.data);
-    shull.copyTo(dhull);
-}
-
-
-void cv::convexityDefects( InputArray _points, InputArray _hull, OutputArray _defects )
-{
-    Mat points = _points.getMat();
-    int ptnum = points.checkVector(2, CV_32S);
-    CV_Assert( ptnum > 3 );
-    Mat hull = _hull.getMat();
-    CV_Assert( hull.checkVector(1, CV_32S) > 2 );
-    Ptr<CvMemStorage> storage = cvCreateMemStorage();
-
-    CvMat c_points = points, c_hull = hull;
-    CvSeq* seq = cvConvexityDefects(&c_points, &c_hull, storage);
-    int i, n = seq->total;
-
-    if( n == 0 )
-    {
-        _defects.release();
-        return;
-    }
-
-    _defects.create(n, 1, CV_32SC4);
-    Mat defects = _defects.getMat();
-
-    SeqIterator<CvConvexityDefect> it = Seq<CvConvexityDefect>(seq).begin();
-    CvPoint* ptorg = (CvPoint*)points.data;
-
-    for( i = 0; i < n; i++, ++it )
-    {
-        CvConvexityDefect& d = *it;
-        int idx0 = (int)(d.start - ptorg);
-        int idx1 = (int)(d.end - ptorg);
-        int idx2 = (int)(d.depth_point - ptorg);
-        CV_Assert( 0 <= idx0 && idx0 < ptnum );
-        CV_Assert( 0 <= idx1 && idx1 < ptnum );
-        CV_Assert( 0 <= idx2 && idx2 < ptnum );
-        CV_Assert( d.depth >= 0 );
-        int idepth = cvRound(d.depth*256);
-        defects.at<Vec4i>(i) = Vec4i(idx0, idx1, idx2, idepth);
-    }
-}
-
-
-bool cv::isContourConvex( InputArray _contour )
-{
-    Mat contour = _contour.getMat();
-    CV_Assert(contour.checkVector(2) >= 0 &&
-              (contour.depth() == CV_32F || contour.depth() == CV_32S));
-    CvMat c = Mat(contour);
-    return cvCheckContourConvexity(&c) > 0;
-}
 
 cv::RotatedRect cv::fitEllipse( InputArray _points )
 {