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/*
* pst.cc -- ePiX's pstricks output format
*
* This file is part of ePiX, a C++ library for creating high-quality
* figures in LaTeX
*
* Version 1.1.20
* Last Change: September 19, 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.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <list>
#include <string>
#include <sstream>
#include <set>
#include "constants.h"
#include "functions.h"
#include "pairs.h"
#include "edge_data.h"
#include "Color.h"
#include "path_style.h"
#include "pen_data.h"
#include "format.h"
#include "pst.h"
namespace ePiX {
pst::pst()
: m_fill(Neutral()), m_line(Black()), m_base(Neutral()),
m_lwidth(PLAIN_WIDTH), m_bwidth("0pt") { }
pst* pst::clone() const
{
return new pst(*this);
}
std::string pst::print_fill(const std::list<edge2d>& edges,
const pair& offset,
const Color& fc,
const pen_data& line,
const std::string& len) const
{
std::stringstream obuf;
// compute attribute string
std::string attribs("[fillstyle=");
if (fc.is_unset())
attribs += "none";
else
attribs += "solid";
attribs += "]";
obuf << set_fill_state(fc) << set_pen_state(line); // side effects
obuf << print_paths(edges, offset, attribs, len);
return obuf.str();
}
std::string pst::print_line(const std::list<edge2d>& edges,
const pair& offset,
const pen_data& line,
const pen_data& base,
const path_state& style,
const std::string& len) const
{
std::stringstream value, obuf;
obuf << set_pen_state(line);
// update base
m_base = base.color();
m_bwidth = base.width();
std::string attribs;
// Generate string to pass as third argument to print_paths if need border
if (m_lwidth < m_bwidth && !m_base.is_unset())
{
length tmp_b(m_bwidth), tmp_l(m_lwidth);
tmp_b += (tmp_l *= -1);
tmp_b *= 0.5;
std::stringstream bordbuf;
bordbuf << "[border=" << print(tmp_b)
<< ",bordercolor=" << m_base.name() << "]";
attribs = bordbuf.str();
}
if (style.is_solid())
obuf << print_paths(edges, offset, attribs, len);
else // not solid
{
// Use base to draw solid underlayer, line to draw top layer.
// Attempt to adjust PST pen alignment; m_bwidth too large.
if (m_lwidth < m_bwidth && !base.color().is_unset())
obuf << set_pen_state(pen_data(base.color(),
0.5*(m_bwidth + m_lwidth)))
<< print_paths(edges, offset, attribs, len);
obuf << format::print_line(edges, offset, line, style, "", len);
}
return obuf.str();
}
std::string pst::print_color(const std::string& model,
const std::string& name,
double d1, double d2,
double d3) const
{
// PSTricks declaration
std::stringstream obuf;
obuf << "\\new" << model;
if (model == "cmy")
obuf << "k";
obuf << "color{" << name << "}";
if (model == "cmy")
{
double bk(min(min(d1,d2),d3));
obuf << "{"
<< d1-bk << " " << d2-bk << " " << d3-bk << " " << bk
<< "}%" << std::endl;
}
else
obuf << "{"
<< d1 << " " << d2 << " " << d3
<< "}%" << std::endl;
return obuf.str();
}
std::string pst::print_color(const std::string& model,
const std::string& name,
double d1, double d2,
double d3, double d4) const
{
// model presumably "cmyk"
std::stringstream obuf;
obuf << "\\newcmykcolor{" << name << "}{"
<< d1 << " " << d2 << " " << d3 << " " << d4 << "}%"
<< std::endl;
return obuf.str();
}
std::string pst::print_comment(const std::string& msg) const
{
std::stringstream obuf;
obuf << "%% " << msg << std::endl;
return obuf.str();
}
// verbatim text, %-protected newline
std::string pst::print_verbatim(const std::string& msg) const
{
std::stringstream obuf;
obuf << msg << "%" << std::endl;
return obuf.str();
}
void pst::reset_state() const
{
m_fill = Neutral();
m_line = Neutral();
m_base = Neutral();
m_lwidth = length(0);
m_bwidth = length(0);
}
//// private member functions ////
std::string pst::start_picture(const pair& sz, const pair& offset) const
{
std::stringstream obuf;
obuf << "\\begin{pspicture}"
<< format::print(sz) << format::print(-offset) << "%" << std::endl;
return obuf.str();
}
std::string pst::end_picture() const
{
std::stringstream obuf;
obuf << "\\end{pspicture}%" << std::endl;
return obuf.str();
}
std::string pst::set_unitlength(const std::string& len) const
{
std::stringstream obuf;
obuf << "\\psset{unit=1" << len
<< ",linewidth=" << print(length(PLAIN_WIDTH)) << "}%"
<< std::endl;
return obuf.str();
}
std::string pst::usepackages() const
{
return "usepackages pstricks";
}
std::string pst::start_open_path(const std::string& attribs) const
{
return "\\psline" + attribs;
}
std::string pst::end_open_path(const std::string& attribs) const
{
std::stringstream obuf;
obuf << std::endl;
return obuf.str();
}
std::string pst::start_closed_path(const std::string& attribs) const
{
return "\\pspolygon" + attribs;
}
std::string pst::end_closed_path(const std::string& attribs) const
{
std::stringstream obuf;
obuf << std::endl;
return obuf.str();
}
std::string pst::set_fill_state(const Color& col) const
{
if (m_fill == col)
return "";
// else
m_fill = col;
std::stringstream obuf;
obuf << "\\psset{";
// filled paths set fillstyle
if (m_fill.is_unset())
obuf << "fillstyle=none";
else
obuf << "fillcolor=" << m_fill.name();
obuf << "}%" << std::endl;
return obuf.str();
}
std::string pst::set_pen_state(const pen_data& pen) const
{
std::stringstream obuf;
if (pen.color().is_unset())
{
m_lwidth=length(0);
return "\\psset{linewidth=0pt}";
}
// else
bool change_width(m_lwidth != pen.width());
bool change_color(m_line != pen.color());
if (change_width || change_color)
{
obuf << "\\psset{";
if (change_width)
{
m_lwidth = pen.width();
obuf << "linewidth=" << m_lwidth.name();
if (change_color) // both true, need separator
obuf << ",";
}
if (change_color)
{
m_line = pen.color();
obuf << "linecolor=" << m_line.name();
}
obuf << "}%" << std::endl;
}
return obuf.str();
}
// place a LaTeX box of width zero (containing string) at location (pair)
std::string pst::put_box(const pair& loc, const std::string& msg) const
{
std::stringstream obuf;
obuf << "\\rput" << print(loc) << "{" << msg << "}" << std::endl;
return obuf.str();
}
std::string pst::print_circle_marker(const pair& here, double diam,
bool fill, const Color& color,
const std::string& len) const
{
std::stringstream obuf;
obuf << "\\pscircle";
if (fill)
obuf << "*";
obuf << "[linecolor=" << print(color) << "]" << print(here)
<< "{" << 0.5*diam << "}%" << std::endl;
return obuf.str();
}
} // end of namespace
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