--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/OrthancStone/Sources/Scene2D/Internals/CairoPolylineRenderer.cpp	Tue Jul 07 16:21:02 2020 +0200
@@ -0,0 +1,76 @@
+/**
+ * Stone of Orthanc
+ * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
+ * Department, University Hospital of Liege, Belgium
+ * Copyright (C) 2017-2020 Osimis S.A., Belgium
+ *
+ * This program is free software: you can redistribute it and/or
+ * modify it under the terms of the GNU Affero General Public License
+ * as published by the Free Software Foundation, either version 3 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Affero General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ **/
+
+
+#include "CairoPolylineRenderer.h"
+
+#include "../PolylineSceneLayer.h"
+
+namespace OrthancStone
+{
+  namespace Internals
+  {
+    void CairoPolylineRenderer::Render(const AffineTransform2D& transform,
+                                       unsigned int canvasWidth,
+                                       unsigned int canvasHeight)
+    {
+      const PolylineSceneLayer& layer = GetLayer<PolylineSceneLayer>();
+      
+      cairo_t* cr = GetCairoContext();
+
+      cairo_set_line_width(cr, layer.GetThickness());
+      
+      for (size_t i = 0; i < layer.GetChainsCount(); i++)
+      {
+        const Color& color = layer.GetColor(i);
+        cairo_set_source_rgb(cr, color.GetRedAsFloat(),
+                             color.GetGreenAsFloat(),
+                             color.GetBlueAsFloat());
+
+        const PolylineSceneLayer::Chain& chain = layer.GetChain(i);
+
+        if (!chain.empty())
+        {
+          for (size_t j = 0; j < chain.size(); j++)
+          {
+            ScenePoint2D p = chain[j].Apply(transform);
+
+            if (j == 0)
+            {
+              cairo_move_to(cr, p.GetX(), p.GetY());
+            }
+            else
+            {
+              cairo_line_to(cr, p.GetX(), p.GetY());
+            }
+          }
+
+          if (layer.IsClosedChain(i))
+          {
+            ScenePoint2D p = chain[0].Apply(transform);
+            cairo_line_to(cr, p.GetX(), p.GetY());
+          }
+        }
+
+        cairo_stroke(cr);
+      }
+    }
+  }
+}