--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/OrthancStone/Sources/Scene2D/ArrowSceneLayer.cpp	Fri Oct 30 16:26:39 2020 +0100
@@ -0,0 +1,86 @@
+/**
+ * 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 Lesser 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this program. If not, see
+ * <http://www.gnu.org/licenses/>.
+ **/
+
+
+#include "ArrowSceneLayer.h"
+
+#include <boost/math/constants/constants.hpp>
+
+namespace OrthancStone
+{
+  ArrowSceneLayer::ArrowSceneLayer(const ScenePoint2D& a,
+                                   const ScenePoint2D& b) :
+    a_(a),
+    b_(b),
+    thickness_(1.0),
+    revision_(0),
+    arrowLength_(10),  // 10 pixels
+    arrowAngle_(boost::math::constants::pi<double>() / 12.0)  // 15 degrees
+  {
+  }
+
+
+  ISceneLayer* ArrowSceneLayer::Clone() const
+  {
+    std::unique_ptr<ArrowSceneLayer> copy(new ArrowSceneLayer(a_, b_));
+    copy->color_ = color_;
+    copy->thickness_ = thickness_;
+    copy->arrowLength_ = arrowLength_;
+    copy->arrowAngle_ = arrowAngle_;
+    return copy.release();
+  }
+    
+
+  void ArrowSceneLayer::SetThickness(double thickness)
+  {
+    thickness_ = thickness;
+    revision_ += 1;
+  }
+
+
+  void ArrowSceneLayer::SetColor(const Color& color)
+  {
+    color_ = color;
+    revision_ += 1;
+  }
+    
+
+  void ArrowSceneLayer::SetArrowLength(double length)
+  {
+    arrowLength_ = length;
+    revision_ += 1;
+  }
+
+
+  void ArrowSceneLayer::SetArrowAngle(double angle)
+  {
+    arrowAngle_ = angle;
+    revision_ += 1;
+  }
+    
+
+  void ArrowSceneLayer::GetBoundingBox(Extent2D& target) const
+  {
+    target.Clear();
+    target.AddPoint(a_.GetX(), a_.GetY());
+    target.AddPoint(b_.GetX(), b_.GetY());
+  }
+}