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Diffstat (limited to 'source/blender/freestyle/src/geometry/FitCurve.h')
-rwxr-xr-x | source/blender/freestyle/src/geometry/FitCurve.h | 101 |
1 files changed, 101 insertions, 0 deletions
diff --git a/source/blender/freestyle/src/geometry/FitCurve.h b/source/blender/freestyle/src/geometry/FitCurve.h new file mode 100755 index 00000000000..ed7cbe34780 --- /dev/null +++ b/source/blender/freestyle/src/geometry/FitCurve.h @@ -0,0 +1,101 @@ +// +// Filename : FitCurve.h +// Author(s) : Stephane Grabli +// Purpose : An Algorithm for Automatically Fitting Digitized Curves +// by Philip J. Schneider +// from "Graphics Gems", Academic Press, 1990 +// Date of creation : 06/06/2003 +// +/////////////////////////////////////////////////////////////////////////////// + + +// +// 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 FITCURVE_H +# define FITCURVE_H + +#include <vector> +#include "../system/FreestyleConfig.h" +#include "Geom.h" + +using namespace Geometry; + +typedef struct Point2Struct { /* 2d point */ + double coordinates[2]; + Point2Struct() {coordinates[0]=0;coordinates[1]=0;} + inline double operator[](const int i) const + { + return coordinates[i]; + } + inline double& operator[](const int i) + { + return coordinates[i]; + } + inline double x() const {return coordinates[0];} + inline double y() const {return coordinates[1];} + } Point2; + +typedef Point2 Vector2; + + + +class LIB_GEOMETRY_EXPORT FitCurveWrapper +{ +private: + std::vector<Vector2> _vertices; + +public: + FitCurveWrapper(); + ~FitCurveWrapper(); + + /*! Fits a set of 2D data points to a set of Bezier Curve segments + * data + * Input data points + * oCurve + * Control points of the sets of bezier curve segments. + * Each segment is made of 4 points (polynomial degree of curve = 3) + * error + * max error tolerance between resulting curve and input data + */ + void FitCurve(std::vector<Vec2d>& data, std::vector<Vec2d>& oCurve, double error); +protected: + /* Vec2d *d; Array of digitized points */ + /* int nPts; Number of digitized points */ + /* double error; User-defined error squared */ + void FitCurve(Vector2 *d, int nPts, double error); + + /*! Draws a Bezier curve segment + * n + * degree of curve (=3) + * curve + * bezier segments control points + */ + void DrawBezierCurve(int n, Vector2 *curve); + + /* Vec2d *d; Array of digitized points */ + /* int first, last; Indices of first and last pts in region */ + /* Vec2d tHat1, tHat2; Unit tangent vectors at endpoints */ + /* double error; User-defined error squared */ + void FitCubic(Vector2 *d, int first, int last, Vector2 tHat1, Vector2 tHat2, double error); + +}; + +#endif // FITCURVE_H |