/* units.h * * Copyright (C) 2009, 2010 Francesco Abbate * * 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 3 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ #ifndef AGGPLOT_UNITS_H #define AGGPLOT_UNITS_H class units { private: int m_major; int order; double dmajor; // equal to (m_major * 10^order) int m_inf, m_sup; // expressed in the base of (m_major * 10^order) int nb_decimals; void init(double min, double max, double spacefact); public: units(): m_major(1), order(0), dmajor(1), m_inf(0), m_sup(1), nb_decimals(0) {}; units (double min, double max, double spacefact = 4.0) { init(min, max, spacefact); }; int begin() const { return m_inf; }; int end() const { return m_sup; }; void limits(int &start, int &fin, double &step) { start = m_inf; fin = m_sup; step = dmajor; }; void mark_label (char *label, unsigned size, int mark) const; double mark_value (int mark) const { return dmajor * mark; }; double mark_scale(double x); }; #endif