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diff --git a/source/blender/freestyle/intern/stroke/AdvancedFunctions0D.cpp b/source/blender/freestyle/intern/stroke/AdvancedFunctions0D.cpp
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+++ b/source/blender/freestyle/intern/stroke/AdvancedFunctions0D.cpp
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+
+//
+//  Copyright (C) : Please refer to the COPYRIGHT file distributed 
+//   with this source distribution. 
+//
+//  This program is free software; you can redistribute it and/or
+//  modify it under the terms of the GNU General Public License
+//  as published by the Free Software Foundation; either version 2
+//  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 General Public License for more details.
+//
+//  You should have received a copy of the GNU General Public License
+//  along with this program; if not, write to the Free Software
+//  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+# include "../view_map/Functions0D.h"
+# include "AdvancedFunctions0D.h"
+# include "../view_map/SteerableViewMap.h"
+# include "Canvas.h"
+
+namespace Functions0D {
+
+  int DensityF0D::operator()(Interface0DIterator& iter) {
+    Canvas* canvas = Canvas::getInstance();
+    int bound = _filter.getBound();
+    if( (iter->getProjectedX()-bound < 0) || (iter->getProjectedX()+bound>canvas->width())
+	 || (iter->getProjectedY()-bound < 0) || (iter->getProjectedY()+bound>canvas->height())) {
+      result = 0.0;
+	  return 0;
+	}
+    RGBImage image;
+    canvas->readColorPixels((int)iter->getProjectedX() - bound,
+			    (int)iter->getProjectedY() - bound,
+			    _filter.maskSize(),
+			    _filter.maskSize(),
+			    image);
+    result = _filter.getSmoothedPixel<RGBImage>(&image, (int)iter->getProjectedX(),
+					(int)iter->getProjectedY());
+	return 0;
+  }
+
+
+  int LocalAverageDepthF0D::operator()(Interface0DIterator& iter) {
+    Canvas * iViewer = Canvas::getInstance();
+    int bound = _filter.getBound();
+    
+    if( (iter->getProjectedX()-bound < 0) || (iter->getProjectedX()+bound>iViewer->width())
+	 || (iter->getProjectedY()-bound < 0) || (iter->getProjectedY()+bound>iViewer->height())) {
+      result = 0.0;
+	  return 0;
+	}
+    GrayImage image ;
+    iViewer->readDepthPixels((int)iter->getProjectedX()-bound,(int)iter->getProjectedY()-bound,_filter.maskSize(),_filter.maskSize(),image);
+    result = _filter.getSmoothedPixel(&image, (int)iter->getProjectedX(), (int)iter->getProjectedY());
+	return 0;
+  }
+
+  int ReadMapPixelF0D::operator()(Interface0DIterator& iter) {
+    Canvas * canvas = Canvas::getInstance();
+    result = canvas->readMapPixel(_mapName, _level, (int)iter->getProjectedX(), (int)iter->getProjectedY());
+	return 0;
+  }
+
+  int ReadSteerableViewMapPixelF0D::operator()(Interface0DIterator& iter) {
+    SteerableViewMap *svm = Canvas::getInstance()->getSteerableViewMap();
+    result = svm->readSteerableViewMapPixel(_orientation, _level,(int)iter->getProjectedX(), (int)iter->getProjectedY());
+    return 0;
+  }
+
+  int ReadCompleteViewMapPixelF0D::operator()(Interface0DIterator& iter) {
+    SteerableViewMap *svm = Canvas::getInstance()->getSteerableViewMap();
+    result = svm->readCompleteViewMapPixel(_level,(int)iter->getProjectedX(), (int)iter->getProjectedY());
+    return 0;
+  }
+
+  int GetViewMapGradientNormF0D::operator()(Interface0DIterator& iter){
+    SteerableViewMap *svm = Canvas::getInstance()->getSteerableViewMap();
+    float pxy = svm->readCompleteViewMapPixel(_level,(int)iter->getProjectedX(), (int)iter->getProjectedY());
+    float gx = svm->readCompleteViewMapPixel(_level,(int)iter->getProjectedX()+_step, (int)iter->getProjectedY())
+      - pxy;
+    float gy = svm->readCompleteViewMapPixel(_level,(int)iter->getProjectedX(), (int)iter->getProjectedY()+_step)
+      - pxy;
+	result = Vec2f(gx,gy).norm();
+    return 0;
+  }
+} // end of namespace Functions0D