From 74c8f4e347ec8bc70bab95bbbde769c212594792 Mon Sep 17 00:00:00 2001
From: Ollie Relph <ollie@relph.me>
Date: Tue, 25 Oct 2016 11:36:07 +0100
Subject: [PATCH] Use the contour hierarchy that's been passed

---
 src/Matrix.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Matrix.cc b/src/Matrix.cc
index 3d5db2d..170c913 100755
--- a/src/Matrix.cc
+++ b/src/Matrix.cc
@@ -1495,7 +1495,7 @@ NAN_METHOD(Matrix::DrawContour) {
     offset = cv::Point(_offset->Get(0)->ToNumber()->Value(), _offset->Get(1)->ToNumber()->Value());
   }
 
-  cv::drawContours(self->mat, cont->contours, pos, color, thickness, lineType, cv::noArray(), maxLevel, offset);
+  cv::drawContours(self->mat, cont->contours, pos, color, thickness, lineType, cont->hierarchy, maxLevel, offset);
 
   return;
 }