diff Framework/Scene2D/Internals/OpenGLBasicPolylineRenderer.cpp @ 593:6bf8f881fcb5

OpenGLBasicPolylineRenderer
author Sebastien Jodogne <s.jodogne@gmail.com>
date Fri, 26 Apr 2019 13:04:56 +0200
parents
children 1e26bb5f2a02
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Framework/Scene2D/Internals/OpenGLBasicPolylineRenderer.cpp	Fri Apr 26 13:04:56 2019 +0200
@@ -0,0 +1,86 @@
+/**
+ * Stone of Orthanc
+ * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
+ * Department, University Hospital of Liege, Belgium
+ * Copyright (C) 2017-2019 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 "OpenGLBasicPolylineRenderer.h"
+
+#include "../../OpenGL/OpenGLIncludes.h"
+
+namespace OrthancStone
+{
+  namespace Internals
+  {
+    OpenGLBasicPolylineRenderer::OpenGLBasicPolylineRenderer(OpenGL::IOpenGLContext& context,
+                                                             const PolylineSceneLayer& layer) :
+      context_(context)
+    {
+      layer_.Copy(layer);
+    }
+
+    
+    void OpenGLBasicPolylineRenderer::Render(const AffineTransform2D& transform)
+    {
+      AffineTransform2D t = AffineTransform2D::Combine(
+        AffineTransform2D::CreateOpenGLClipspace(context_.GetCanvasWidth(), context_.GetCanvasHeight()),
+        transform);
+
+      glUseProgram(0);
+      glColor3ub(layer_.GetRed(), layer_.GetGreen(), layer_.GetBlue());
+
+      glBegin(GL_LINES);
+
+      for (size_t i = 0; i < layer_.GetChainsCount(); i++)
+      {
+        const PolylineSceneLayer::Chain& chain = layer_.GetChain(i);
+
+        if (chain.size() > 1)
+        {
+          ScenePoint2D previous = chain[0].Apply(t);
+
+          for (size_t j = 1; j < chain.size(); j++)
+          {
+            ScenePoint2D p = chain[j].Apply(t);
+
+            glVertex2f(previous.GetX(), previous.GetY());
+            glVertex2f(p.GetX(), p.GetY());
+
+            previous = p;
+          }
+
+          if (layer_.IsClosedChain(i))
+          {
+            ScenePoint2D p = chain[0].Apply(t);
+
+            glVertex2f(previous.GetX(), previous.GetY());
+            glVertex2f(p.GetX(), p.GetY());
+          }
+        }
+      }
+
+      glEnd();
+    }
+
+    
+    void OpenGLBasicPolylineRenderer::Update(const ISceneLayer& layer)
+    {
+      layer_.Copy(dynamic_cast<const PolylineSceneLayer&>(layer));
+    }
+  }
+}