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/*
* axis.h -- Decorable coordinate axis class
*
* This file is part of ePiX, a C++ library for creating high-quality
* figures in LaTeX
*
* Version 1.1.13
* Last Change: August 23, 2007
*/
/*
* Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
* Andrew D. Hwang <ahwang -at- holycross -dot- edu>
* 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
*/
#ifndef EPIX_AXIS
#define EPIX_AXIS
#include <string>
#include <set>
#include "enums.h"
#include "triples.h"
namespace ePiX {
class axis {
public:
axis(const P&, const P&, unsigned int n,
const P& offset = P(0,0), epix_label_posn POSN=none);
// attribute-setting
axis& dec(); // default
axis& frac(); // fractional labels
axis& trig(); // fractions times pi
axis& sci(); // scientific notation
// f(x, precision, base) returns a string representing x
axis& label_rep(std::string f(double, unsigned int, unsigned int));
// unmark selected location (non-log labels only)
axis& unmark(double arg=0);
// add or remove logarithmic tags ("sublabels")
axis& log(unsigned int base=10); // log ticks and labels
axis& tag(double); // put label at arg in log mode
axis& tag235(); // tags at 2, 3, 5 in log10 mode
axis& tags(); // tags at 2, ..., b-1 in logb mode
axis& untag(); // remove all log tags
axis& untag(double); // remove selected tag
axis& align_labels(epix_label_posn);
axis& align(epix_label_posn); // align tick marks
// number of minor ticks per segment
axis& subdivide(unsigned int);
// set length of minor ticks
axis& tick_ratio(double);
// set precision for axis labels
axis& precision(unsigned int digits=0); // 0: reset to default
void draw_ticks() const;
void draw_labels() const;
void draw() const;
private:
P m_tail;
P m_head;
unsigned int m_major_segs;
unsigned int m_minor_segs;
double m_tick_ratio;
epix_label_posn m_align_ticks;
P m_offset;
epix_label_posn m_align_labels;
unsigned int m_log_base;
bool m_log;
unsigned int m_precision;
double (*m_coord)(const P&); // value to place at arg
// represent arg as string
std::string (*m_rep)(double arg, unsigned int prec, unsigned int base);
std::set<double> m_omitted;
std::set<double> m_log_tags;
}; // end of axis class
// axes along sides of bounding box, ticks automatically aligned
axis top_axis(unsigned int n, const P& offset=P(0,0),
epix_label_posn POSN=t);
axis bottom_axis(unsigned int n, const P& offset=P(0,0),
epix_label_posn POSN=b);
axis left_axis(unsigned int n, const P& offset=P(0,0),
epix_label_posn POSN=l);
axis right_axis(unsigned int n, const P& offset=P(0,0),
epix_label_posn POSN=r);
// Global functions from Version 1.0
void h_axis_labels(const P& tail, const P& head, unsigned int n,
const P& offset, epix_label_posn POSN=none);
void v_axis_labels(const P& tail, const P& head, unsigned int n,
const P& offset, epix_label_posn POSN=none);
void h_axis_masklabels(const P& tail, const P& head, unsigned int n,
const P& offset, epix_label_posn POSN=none);
void v_axis_masklabels(const P& tail, const P& head, unsigned int n,
const P& offset, epix_label_posn POSN=none);
// Axis labels with default endpoints
void h_axis_labels(unsigned int n, const P& offset,
epix_label_posn POSN=none);
void h_axis_masklabels(unsigned int n, const P& offset,
epix_label_posn POSN=none);
void v_axis_labels(unsigned int n, const P& offset,
epix_label_posn POSN=none);
void v_axis_masklabels(unsigned int n, const P& offset,
epix_label_posn POSN=none);
//// logarithmic labels ////
// labels written $k x base^i$ at i + log_b(k)
void h_axis_log_labels(const P& tail, const P& head, unsigned int n,
const P& offset, epix_label_posn POSN=none,
unsigned int base=10);
void v_axis_log_labels(const P& tail, const P& head, unsigned int n,
const P& offset, epix_label_posn POSN=none,
unsigned int base=10);
// labels written $base^i$ at coord i
void h_axis_log_labels(const P& tail, const P& head,
const P& offset, epix_label_posn POSN=none,
unsigned int base=10);
void v_axis_log_labels(const P& tail, const P& head,
const P& offset, epix_label_posn POSN=none,
unsigned int base=10);
void h_axis_log_masklabels(const P& tail, const P& head, unsigned int n,
const P& offset, epix_label_posn POSN=none,
unsigned int base=10);
void v_axis_log_masklabels(const P& tail, const P& head, unsigned int n,
const P& offset, epix_label_posn POSN=none,
unsigned int base=10);
void h_axis_log_masklabels(const P& tail, const P& head,
const P& offset, epix_label_posn POSN=none,
unsigned int base=10);
void v_axis_log_masklabels(const P& tail, const P& head,
const P& offset, epix_label_posn POSN=none,
unsigned int base=10);
// Coordinate axes, specified by initial and final points, number of
// tick marks. h/v_axis are identical except for style of tick marks.
// n subintervals
void h_axis(const P& tail, const P& head, unsigned int n,
epix_label_posn align=c);
void v_axis(const P& tail, const P& head, unsigned int n,
epix_label_posn align=c);
// Default endpoints (xmin(), 0), xmax(), 0), etc.
void h_axis(unsigned int n = xsize(), epix_label_posn align=c);
void v_axis(unsigned int n = ysize(), epix_label_posn align=c);
void h_log_axis(const P& tail, const P& head, unsigned int segs,
epix_label_posn align=c, unsigned int base=10);
void v_log_axis(const P& tail, const P& head, unsigned int segs,
epix_label_posn align=c, unsigned int base=10);
} // end of namespace
#endif /* EPIX_AXIS */
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