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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/arrow_style.cc
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+/*
+ * arrow_atyle.cc -- ePiX's arrowhead parameters
+ *
+ * This file is part of ePiX, a C++ library for creating high-quality
+ * figures in LaTeX
+ *
+ * Version 1.1.15
+ * Last Change: September 08, 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
+ */
+
+/*
+ * The class in this file implements backend for user-level global
+ * functions defined in state.h. This header is not part of epix.h.
+ */
+#include <cmath>
+
+#include "constants.h"
+#include "functions.h" // for snip_to
+#include "arrow_style.h"
+
+namespace ePiX {
+
+ arrowhead_state::arrowhead_state()
+ : m_width(0.5*AVG_AWIDTH), m_ratio(AVG_ARATIO),
+ m_inset(AVG_INSET), m_fill(false) { }
+
+ // set
+ arrowhead_state& arrowhead_state::width(double w)
+ {
+ m_width = fabs(0.5*snip_to(w, MIN_AWIDTH, MAX_AWIDTH));
+ return *this;
+ }
+
+ arrowhead_state& arrowhead_state::ratio(double r)
+ {
+ m_ratio = fabs(snip_to(r, MIN_ARATIO, MAX_ARATIO));
+ return *this;
+ }
+
+ arrowhead_state& arrowhead_state::inset(double arg)
+ {
+ m_inset = snip_to(arg, MIN_INSET, MAX_INSET);
+ return *this;
+ }
+
+ arrowhead_state& arrowhead_state::fill(bool fill)
+ {
+ m_fill = fill;
+ return *this;
+ }
+
+
+ // get
+ double arrowhead_state::width() const
+ {
+ return m_width;
+ }
+
+ double arrowhead_state::ratio() const
+ {
+ return m_ratio;
+ }
+
+ double arrowhead_state::inset() const
+ {
+ return m_inset;
+ }
+
+ bool arrowhead_state::fill() const
+ {
+ return m_fill;
+ }
+
+ arrowhead_state& the_arrowhead_style()
+ {
+ static arrowhead_state* the_arrowhead_state(new arrowhead_state());
+ return *the_arrowhead_state;
+ }
+} // end of namespace