Remove ancient trunk folder from svn repository

[synfig.git] / synfig-studio / src / synfigapp / blineconvert.h

diff --git a/synfig-studio/src/synfigapp/blineconvert.h b/synfig-studio/src/synfigapp/blineconvert.h
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+/* === S Y N F I G ========================================================= */
+/*!    \file blineconvert.h
+**     \brief Template Header
+**
+**     $Id$
+**
+**     \legal
+**     Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
+**
+**     This package 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 package 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.
+**     \endlegal
+*/
+/* ========================================================================= */
+
+/* === S T A R T =========================================================== */
+
+#ifndef __SYNFIG_BLINE_CONVERT_H
+#define __SYNFIG_BLINE_CONVERT_H
+
+/* === H E A D E R S ======================================================= */
+
+#include <synfig/general.h>
+#include <synfig/blinepoint.h>
+#include <list>
+#include <vector>
+
+/* === M A C R O S ========================================================= */
+
+/* === T Y P E D E F S ===================================================== */
+
+/* === C L A S S E S & S T R U C T S ======================================= */
+
+namespace synfigapp {
+
+class BLineConverter
+{
+public:
+       struct cpindex
+       {
+               int             curind;
+               synfig::Real    tangentscale;
+               synfig::Real    error;  //negative error will indicate invalid;
+
+               cpindex(int ci, synfig::Real s=0, synfig::Real e=-1)
+               :curind(ci), tangentscale(s), error(e)
+               {}
+
+               cpindex(const cpindex & o)
+               :curind(o.curind), tangentscale(o.tangentscale), error(o.error)
+               {}
+
+               const cpindex & operator=(const cpindex & rhs)
+               {
+                       curind = rhs.curind;
+                       tangentscale = rhs.tangentscale;
+                       error = rhs.error;
+                       return *this;
+               }
+
+               bool operator<(const cpindex &rhs) const
+               {
+                       return curind < rhs.curind;
+               }
+
+               //point is obviously in[curind]
+               //tangent scale will get reset to the smallest (or something else depending on experimentation)
+       };
+
+private:
+       //cached data
+       std::vector<synfig::Point>      point_cache;    //the preprocessed input cache
+       std::vector<synfig::Real>       width_cache;
+
+       //temporary point storage for vector calc
+       std::vector<synfig::Point>      ftemp;
+
+       std::vector<synfig::Vector>     deriv; //the derivative cache
+       std::vector<synfig::Real>       curvature; //the curvature cache
+
+       std::vector<int>                        break_tangents; //the break point cache
+
+       std::vector<synfig::Real>       cum_dist,       //cumulative distance
+                                                               this_dist; //distance between adjacent segments
+
+       std::vector<synfig::Point>      work; //the working point cache for the entire curve
+       std::vector<cpindex>            curind;
+
+       //function parameters
+       void clear();
+
+public:
+       synfig::Real width;
+
+       //Converter properties
+       synfig::Real pixelwidth;
+       synfig::Real smoothness; //actual error will be smoothness*pixelwidth (for global set pixelwidth = 1)
+
+       BLineConverter();
+
+       static void EnforceMinWidth(std::list<synfig::BLinePoint> &bline, synfig::Real min_pressure);
+       void operator()(std::list<synfig::BLinePoint> &out, const std::list<synfig::Point> &in,const std::list<synfig::Real> &in_w);
+};
+
+}; // END of namespace synfigapp
+
+/* === E N D =============================================================== */
+
+#endif