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//
// Filename : AdvancedFunctions0D.h
// Author(s) : Stephane Grabli
// Purpose : Functions related to context queries
// Date of creation : 20/12/2003
//
///////////////////////////////////////////////////////////////////////////////
//
// 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.
//
///////////////////////////////////////////////////////////////////////////////
#ifndef CONTEXT_FUNCTIONS_HPP
# define CONTEXT_FUNCTIONS_HPP
# include "Canvas.h"
# include "../image/Image.h"
# include "../image/GaussianFilter.h"
/*! \file ContextFunctions.h
* Interface to access the context related
* information.
*/
//
// Context Functions definitions
//
///////////////////////////////////////////////////////////
/*! namespace containing all the Context related functions */
namespace ContextFunctions {
// GetTimeStamp
LIB_STROKE_EXPORT
/*! Returns the system time stamp */
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.f);
// 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 // CONTEXT_FUNCTIONS_HPP
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