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Diffstat (limited to 'source/blender/freestyle/intern/view_map/SteerableViewMap.h')
| -rwxr-xr-x | source/blender/freestyle/intern/view_map/SteerableViewMap.h | 153 |
1 files changed, 153 insertions, 0 deletions
diff --git a/source/blender/freestyle/intern/view_map/SteerableViewMap.h b/source/blender/freestyle/intern/view_map/SteerableViewMap.h new file mode 100755 index 00000000000..fe7c2493752 --- /dev/null +++ b/source/blender/freestyle/intern/view_map/SteerableViewMap.h @@ -0,0 +1,153 @@ +// +// Filename : SteerbaleViewMap.h +// Author(s) : Stephane Grabli +// Purpose : Convenient access to the steerable ViewMap +// to which any element of the ViewMap belongs to. +// Date of creation : 01/07/2003 +// +/////////////////////////////////////////////////////////////////////////////// + + +// +// 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 STEERABLEVIEWMAP_H +# define STEERABLEVIEWMAP_H + +#include <map> +#include "../system/FreestyleConfig.h" +#include "../geometry/Geom.h" +using namespace Geometry; + +using namespace std; + +class FEdge; +class ImagePyramid; +class GrayImage; +/*! This class checks for every FEdge in which steerable + * it belongs and stores the mapping allowing to retrieve + * this information from the FEdge Id + */ +class LIB_VIEW_MAP_EXPORT SteerableViewMap{ +protected: + map<unsigned int, double* > _mapping; // for each vector the list of nbOrientations weigths corresponding to its contributions to the nbOrientations directional maps + unsigned _nbOrientations; + ImagePyramid **_imagesPyramids; // the pyramids of images storing the different SVM + + // internal + double _bound; // cos(Pi/N) + vector<Vec2d> _directions; + +public: + SteerableViewMap(unsigned int nbOrientations = 4); + SteerableViewMap(const SteerableViewMap& iBrother); + virtual ~SteerableViewMap(); + + /*! Resets everything */ + virtual void Reset(); + + /*! Adds a FEdge to steerable VM. + * Returns the nbOrientations weigths corresponding to + * the FEdge contributions to the nbOrientations directional maps. + */ + double* AddFEdge(FEdge *iFEdge); + + /*! Compute the weight of direction dir for orientation iNOrientation */ + double ComputeWeight(const Vec2d& dir, unsigned iNOrientation); + + /*! Returns the number of the SVM to which a direction belongs + * to. + * \param dir + * The direction + */ + unsigned getSVMNumber(const Vec2f& dir); + + /*! Returns the number of the SVM to which a FEdge belongs + * most. + * \param id + * The First element of the Id struct of the FEdge + * we're intersted in. + */ + unsigned getSVMNumber(unsigned id); + + /*! Builds _nbOrientations+1 pyramids of images from the _nbOrientations+1 base images + * of the steerable viewmap. + * \param steerableBases + * The _nbOrientations+1 images constituing the basis for the steerable + * pyramid. + * \param copy + * If false, the data is not duplicated, and Canvas deals + * with the memory management of these _nbOrientations+1 images. If true, data + * is copied, and it's up to the caller to delete the images. + * \params iNbLevels + * The number of levels desired for each pyramid. + * If iNbLevels == 0, the complete pyramid is built. + * \param iSigma + * The sigma that will be used for the gaussian blur + */ + void buildImagesPyramids(GrayImage **steerableBases, bool copy = false, unsigned iNbLevels=4, float iSigma = 1.f); + + /*! Reads a pixel value in one of the VewMap density steerable pyramids. + * Returns a value between 0 and 1. + * \param iOrientation + * the number telling which orientation we need to check. + * There are _nbOrientations+1 oriented ViewMaps: + * 0 -> the ViewMap containing every horizontal lines + * 1 -> the ViewMap containing every lines whose orientation is around PI/4 + * 2 -> the ViewMap containing every vertical lines + * 3 -> the ViewMap containing every lines whose orientation is around 3PI/4 + * 4 -> the complete ViewMap + * \param iLevel + * The level of the pyramid we want to read + * \param x + * The abscissa of the desired pixel specified in level0 coordinate + * system. The origin is the lower left corner. + * \param y + * The ordinate of the desired pixel specified in level0 coordinate + * system. The origin is the lower left corner. + */ + float readSteerableViewMapPixel(unsigned iOrientation, int iLevel, int x, int y); + + /*! Reads a pixel in the one of the level of the + * pyramid containing the images of the complete + * ViewMap. + * Returns a value between 0 and 1. + * Equivalent to : readSteerableViewMapPixel(nbOrientations, x,y) + */ + float readCompleteViewMapPixel(int iLevel, int x, int y); + + /*! Returns the number of levels in the pyramids */ + unsigned int getNumberOfPyramidLevels() const; + + /*! Returns the number of orientations */ + unsigned int getNumberOfOrientations() const{ + return _nbOrientations; + } + + /*! for debug purposes */ + void saveSteerableViewMap() const ; + +protected: + void Clear(); + void Build(); + + +}; + +#endif // STEERABLEVIEWMAP_H |