git.gag.com Git - fw/altos/blob - altoslib/AltosDistance.java

   1 /*
   2  * Copyright © 2012 Keith Packard <keithp@keithp.com>
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; version 2 of the License.
   7  *
   8  * This program is distributed in the hope that it will be useful, but
   9  * WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  11  * General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU General Public License along
  14  * with this program; if not, write to the Free Software Foundation, Inc.,
  15  * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
  16  */
  17
  18 package org.altusmetrum.altoslib_11;
  19
  20 public class AltosDistance extends AltosUnits {
  21
  22         public double value(double v, boolean imperial_units) {
  23                 if (imperial_units)
  24                         return AltosConvert.meters_to_miles(v);
  25                 return v;
  26         }
  27
  28         public double inverse(double v, boolean imperial_units) {
  29                 if (imperial_units)
  30                         return AltosConvert.miles_to_meters(v);
  31                 return v;
  32         }
  33
  34         public String show_units(boolean imperial_units) {
  35                 if (imperial_units)
  36                         return "miles";
  37                 return "m";
  38         }
  39
  40         public String say_units(boolean imperial_units) {
  41                 if (imperial_units)
  42                         return "miles";
  43                 return "meters";
  44         }
  45
  46         public int show_fraction(int width, boolean imperial_units) {
  47                 if (imperial_units)
  48                         return width / 3;
  49                 return width / 9;
  50         }
  51
  52         public int say_fraction(boolean imperial_units) {
  53                 if (imperial_units)
  54                         return 1;
  55                 return 0;
  56         }
  57
  58         public AltosDistance() {
  59                 range_metric = new AltosUnitsRange[2];
  60
  61                 range_metric[0] = new AltosUnitsRange(0, "m", "meters") {
  62                                 double value(double v) {
  63                                         return v;
  64                                 }
  65                                 int show_fraction(int width) {
  66                                         return width / 9;
  67                                 }
  68                                 int say_fraction() {
  69                                         return 0;
  70                                 }
  71                         };
  72                 range_metric[1] = new AltosUnitsRange(2000, "km", "kilometers") {
  73                                 double value(double v) {
  74                                         return v / 1000;
  75                                 }
  76                                 int show_fraction(int width) {
  77                                         return width / 5;
  78                                 }
  79                                 int say_fraction() {
  80                                         return 1;
  81                                 }
  82                         };
  83
  84                 range_imperial = new AltosUnitsRange[2];
  85
  86                 range_imperial[0] = new AltosUnitsRange(0, "ft", "feet") {
  87                                 double value(double v) {
  88                                         return AltosConvert.meters_to_feet(v);
  89                                 }
  90                                 int show_fraction(int width) {
  91                                         return width / 9;
  92                                 }
  93                                 int say_fraction() {
  94                                         return 0;
  95                                 }
  96                         };
  97
  98                 range_imperial[1] = new AltosUnitsRange(AltosConvert.feet_to_meters(1000),
  99                                                         "mi", "miles") {
 100                                 double value(double v) {
 101                                         return AltosConvert.meters_to_miles(v);
 102                                 }
 103                                 int show_fraction(int width) {
 104                                         return width / 5;
 105                                 }
 106                                 int say_fraction() {
 107                                         return 1;
 108                                 }
 109                         };
 110         }
 111 }