Merge pull request #22153 from vrabaud:opencv_drawing

modules/imgproc/src/drawing.cpp

@@ -1159,7 +1159,7 @@ FillConvexPoly( Mat& img, const Point2l* v, int npts, const void* color, int lin
     edge[0].x = edge[1].x = -XY_ONE;
     edge[0].dx = edge[1].dx = 0;
 
-    ptr += img.step*y;
+    ptr += (int64_t)img.step*y;
 
     do
     {
@@ -1188,7 +1188,7 @@ FillConvexPoly( Mat& img, const Point2l* v, int npts, const void* color, int lin
                             }
 
                             edge[i].ye = ty;
-                            edge[i].dx = ((xe - xs)*2 + (ty - y)) / (2 * (ty - y));
+                            edge[i].dx = ((xe - xs)*2 + ((int64_t)ty - y)) / (2 * ((int64_t)ty - y));
                             edge[i].x = xs;
                             edge[i].idx = idx;
                             break;
@@ -1461,7 +1461,7 @@ Circle( Mat& img, Point center, int radius, const void* color, int fill )
     size_t step = img.step;
     int pix_size = (int)img.elemSize();
     uchar* ptr = img.ptr();
-    int err = 0, dx = radius, dy = 0, plus = 1, minus = (radius << 1) - 1;
+    int64_t err = 0, dx = radius, dy = 0, plus = 1, minus = (radius << 1) - 1;
     int inside = center.x >= radius && center.x < size.width - radius &&
         center.y >= radius && center.y < size.height - radius;
 
@@ -1471,8 +1471,8 @@ Circle( Mat& img, Point center, int radius, const void* color, int fill )
     while( dx >= dy )
     {
         int mask;
-        int y11 = center.y - dy, y12 = center.y + dy, y21 = center.y - dx, y22 = center.y + dx;
-        int x11 = center.x - dx, x12 = center.x + dx, x21 = center.x - dy, x22 = center.x + dy;
+        int64_t y11 = center.y - dy, y12 = center.y + dy, y21 = center.y - dx, y22 = center.y + dx;
+        int64_t x11 = center.x - dx, x12 = center.x + dx, x21 = center.x - dy, x22 = center.x + dy;
 
         if( inside )
         {
@@ -1512,7 +1512,7 @@ Circle( Mat& img, Point center, int radius, const void* color, int fill )
         {
             if( fill )
             {
-                x11 = std::max( x11, 0 );
+                x11 = std::max( x11, (int64_t)0 );
                 x12 = MIN( x12, size.width - 1 );
             }
 
@@ -1550,7 +1550,7 @@ Circle( Mat& img, Point center, int radius, const void* color, int fill )
             {
                 if( fill )
                 {
-                    x21 = std::max( x21, 0 );
+                    x21 = std::max( x21, (int64_t)0 );
                     x22 = MIN( x22, size.width - 1 );
                 }
 
@@ -1848,6 +1848,11 @@ void rectangle( Mat& img, Rect rec,
     CV_INSTRUMENT_REGION();
 
     CV_Assert( 0 <= shift && shift <= XY_SHIFT );
+
+    // Crop the rectangle to right around the mat.
+    rec &= Rect(-(1 << shift), -(1 << shift), ((img.cols + 2) << shift),
+                ((img.rows + 2) << shift));
+
     if( !rec.empty() )
         rectangle( img, rec.tl(), rec.br() - Point(1<<shift,1<<shift),
                    color, thickness, lineType, shift );