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+/*
+ * ***** BEGIN GPL LICENSE BLOCK *****
+ *
+ * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ * The Original Code is Copyright (C) 2010 Blender Foundation.
+ * All rights reserved.
+ *
+ * The Original Code is: all of this file.
+ *
+ * Contributor(s): none yet.
+ *
+ * ***** END GPL LICENSE BLOCK *****
+ */
+
+#ifndef __FREESTYLE_CONTEXT_FUNCTIONS_H__
+#define __FREESTYLE_CONTEXT_FUNCTIONS_H__
+
+/** \file blender/freestyle/intern/stroke/ContextFunctions.h
+ *  \ingroup freestyle
+ *  \brief Functions related to context queries
+ *  \brief Interface to access the context related information.
+ *  \author Stephane Grabli
+ *  \date 20/12/2003
+ */
+
+#include "Canvas.h"
+
+#include "../image/GaussianFilter.h"
+#include "../image/Image.h"
+
+//
+// Context Functions definitions
+//
+///////////////////////////////////////////////////////////
+/*! namespace containing all the Context related functions */
+namespace ContextFunctions {
+
+// GetTimeStamp
+/*! Returns the system time stamp */
+LIB_STROKE_EXPORT
+unsigned GetTimeStampCF();
+
+// GetCanvasWidth
+/*! Returns the canvas width */
+LIB_STROKE_EXPORT
+unsigned GetCanvasWidthCF();
+
+// GetCanvasHeight
+/*! Returns the canvas width */
+LIB_STROKE_EXPORT 
+unsigned GetCanvasHeightCF();
+
+// Load map
+/*! Loads an image map for further reading */
+LIB_STROKE_EXPORT 
+void LoadMapCF(const char *iFileName, const char *iMapName, unsigned iNbLevels = 4, float iSigma = 1.0f);
+
+// ReadMapPixel
+/*! Reads a pixel in a user-defined map 
+ *  \return the floating value stored for that pixel
+ *  \param iMapName
+ *    The name of the map
+ *  \param level
+ *    The level of the pyramid in which we wish to read the pixel
+ *  \param x
+ *    The x-coordinate of the pixel we wish to read. The origin is in the lower-left corner.
+ *  \param y
+ *    The y-coordinate of the pixel we wish to read. The origin is in the lower-left corner.
+ */
+LIB_STROKE_EXPORT 
+float ReadMapPixelCF(const char *iMapName, int level, unsigned x, unsigned y);
+
+// ReadCompleteViewMapPixel
+/*! Reads a pixel in the complete view map
+ *  \return the floating value stored for that pixel
+ *  \param level
+ *    The level of the pyramid in which we wish to read the pixel
+ *  \param x
+ *    The x-coordinate of the pixel we wish to read. The origin is in the lower-left corner.
+ *  \param y
+ *    The y-coordinate of the pixel we wish to read. The origin is in the lower-left corner.
+ */
+LIB_STROKE_EXPORT 
+float ReadCompleteViewMapPixelCF(int level, unsigned x, unsigned y);
+
+// ReadOrientedViewMapPixel
+/*! Reads a pixel in one of the oriented view map images
+ *  \return the floating value stored for that pixel
+ *  \param iOrientation
+ *    The number telling which orientation we want to check
+ *  \param level
+ *    The level of the pyramid in which we wish to read the pixel
+ *  \param x
+ *    The x-coordinate of the pixel we wish to read. The origin is in the lower-left corner.
+ *  \param y
+ *    The y-coordinate of the pixel we wish to read. The origin is in the lower-left corner.
+ */
+LIB_STROKE_EXPORT 
+float ReadDirectionalViewMapPixelCF(int iOrientation, int level, unsigned x, unsigned y);
+
+// DEBUG
+LIB_STROKE_EXPORT 
+FEdge *GetSelectedFEdgeCF();
+
+} // end of namespace ContextFunctions
+
+#endif // __FREESTYLE_CONTEXT_FUNCTIONS_H__