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authorNorbert Preining <norbert@preining.info>2019-09-02 13:46:59 +0900
committerNorbert Preining <norbert@preining.info>2019-09-02 13:46:59 +0900
commite0c6872cf40896c7be36b11dcc744620f10adf1d (patch)
tree60335e10d2f4354b0674ec22d7b53f0f8abee672 /graphics/epix/path.h
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+/*
+ * path.h -- ePiX user class for polygons and paths
+ *
+ * This file is part of ePiX, a C++ library for creating high-quality
+ * figures in LaTeX
+ *
+ * Version 1.1.3
+ * Last Change: March 04, 2007
+ */
+
+/*
+ * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
+ * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh>
+ * Department of Mathematics and Computer Science
+ * College of the Holy Cross
+ * Worcester, MA, 01610-2395, USA
+ */
+
+/*
+ * ePiX 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.
+ *
+ * ePiX 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 ePiX; if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+#ifndef EPIX_PATHS
+#define EPIX_PATHS
+
+#include <vector>
+
+namespace ePiX {
+
+ class Camera;
+ class Color;
+ class P;
+ class path_data;
+ class pen_data;
+ class screen;
+ class Sphere;
+
+ class path {
+ friend class facet;
+ public:
+
+ // path was visible to users, but is now implemented as a p_impl.
+ path(const path&);
+ path& operator= (const path&);
+ ~path();
+
+ // Interface dictated by backward compatibility
+ path(const std::vector<P>& data, bool closed, bool filled);
+ path();
+
+ // line constructors
+ path(const P& tail, const P& head, double expand=0);
+ path(const P&, const P&, double expand, unsigned int num_pts);
+
+
+ // Constructors that specify the number of points have two prototypes
+ // rather than accepting a default argument. This hides the global
+ // (but user-inaccessible) default number of points (see constants.h).
+
+ // ellipse
+ path(const P& center, const P& axis1, const P& axis2,
+ double t_min, double t_max,
+ unsigned int num_pts);
+
+ path(const P& center, const P& axis1, const P& axis2,
+ double t_min, double t_max);
+
+
+ // spline
+ path(const P& p1, const P& p2, const P& p3, unsigned int n);
+ path(const P& p1, const P& p2, const P& p3);
+
+ path(const P& p1, const P& p2, const P& p3, const P& p4, unsigned int n);
+ path(const P& p1, const P& p2, const P& p3, const P& p4);
+
+
+ // parametric path
+ path(P f(double), double t_min, double t_max, unsigned int num_pts);
+ path(P f(double), double t_min, double t_max);
+
+ // function graph
+ path(double f(double), double t_min, double t_max, unsigned int num_pts);
+ path(double f(double), double t_min, double t_max);
+
+ // append a point
+ path& pt(double, double, double=0);
+ path& pt(const P&);
+
+ // concatenate path segments
+ path& operator+= (const path&);
+ // concatenate, reversing second sequence
+ path& operator-= (const path&);
+
+ bool is_closed() const;
+ bool is_filled() const;
+
+ // set attributes
+ path& close();
+ path& fill(const bool arg=true);
+
+
+ void clip();
+
+ // assumes path lies on sphere
+ void clip_to(const Sphere&, const P& viewpt, bool back=false);
+
+ void draw() const;
+ void draw(const Color&, const pen_data&) const;
+
+ private:
+ path_data* m_segments;
+
+ }; // end of class path
+
+ /*
+ Slated for removal
+ // polygon/polyline with variable number of vertices
+ path polygon(unsigned int num_pts ...);
+ path polyline(unsigned int num_pts ...);
+ */
+
+} // end of namespace
+
+#endif /* EPIX_PATHS */