altoslib: Add imperial units conversion support

"Redneck" mode support

Signed-off-by: Keith Packard <keithp@keithp.com>

8 files changed, 286 insertions, 1 deletions

diff --git a/altoslib/AltosAccel.java b/altoslib/AltosAccel.java
new file mode 100644
index 00000000..d14764a2
--- /dev/null
+++ b/altoslib/AltosAccel.java
@@ -0,0 +1,43 @@
+/*
+ * Copyright © 2012 Keith Packard <keithp@keithp.com>
+ *
+ * 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; version 2 of the License.
+ *
+ * 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.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ */
+
+package org.altusmetrum.AltosLib;
+
+public class AltosAccel extends AltosUnits {
+
+	public double value(double v) {
+		if (AltosConvert.imperial_units)
+			return AltosConvert.meters_to_feet(v);
+		return v;
+	}
+
+	public String show_units() {
+		if (AltosConvert.imperial_units)
+			return "ft/s²";
+		return "m/s²";
+	}
+
+	public String say_units() {
+		if (AltosConvert.imperial_units)
+			return "feet per second squared";
+		return "meters per second squared";
+	}
+
+	int show_fraction(int width) {
+		return width / 9;
+	}
+}
\ No newline at end of file
diff --git a/altoslib/AltosConvert.java b/altoslib/AltosConvert.java
index 3527b575..acd6c5f4 100644
--- a/altoslib/AltosConvert.java
+++ b/altoslib/AltosConvert.java
@@ -242,6 +242,14 @@ public class AltosConvert {
 		return meters * (100 / (2.54 * 12));
 	}
 
+	public static double meters_to_miles(double meters) {
+		return meters_to_feet(meters) / 5280;
+	}
+
+	public static double meters_to_mph(double mps) {
+		return meters_to_miles(mps) * 3600;
+ 	}
+
 	public static double meters_to_mach(double meters) {
 		return meters / 343;		/* something close to mach at usual rocket sites */
 	}
@@ -250,6 +258,26 @@ public class AltosConvert {
 		return meters / 9.80665;
 	}
 
+	public static boolean imperial_units = false;
+
+	public static AltosDistance distance = new AltosDistance();
+
+	public static AltosHeight height = new AltosHeight();
+
+	public static AltosSpeed speed = new AltosSpeed();
+
+	public static AltosAccel accel = new AltosAccel();
+
+	public static String show_gs(String format, double a) {
+		a = meters_to_g(a);
+		format = format.concat(" g");
+		return String.format(format, a);
+	}
+
+	public static String say_gs(double a) {
+		return String.format("%6.0 gees", meters_to_g(a));
+	}
+
 	public static int checksum(int[] data, int start, int length) {
 		int	csum = 0x5a;
 		for (int i = 0; i < length; i++)
diff --git a/altoslib/AltosDistance.java b/altoslib/AltosDistance.java
new file mode 100644
index 00000000..a5e7331c
--- /dev/null
+++ b/altoslib/AltosDistance.java
@@ -0,0 +1,49 @@
+/*
+ * Copyright © 2012 Keith Packard <keithp@keithp.com>
+ *
+ * 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; version 2 of the License.
+ *
+ * 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.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ */
+
+package org.altusmetrum.AltosLib;
+
+public class AltosDistance extends AltosUnits {
+
+	public double value(double v) {
+		if (AltosConvert.imperial_units)
+			return AltosConvert.meters_to_miles(v);
+		return v;
+	}
+
+	public String show_units() {
+		if (AltosConvert.imperial_units)
+			return "miles";
+		return "m";
+	}
+
+	public String say_units() {
+		if (AltosConvert.imperial_units)
+			return "miles";
+		return "meters";
+	}
+
+	int show_fraction(int width) {
+		if (AltosConvert.imperial_units)
+			return width / 3;
+		return width / 9;
+	}
+
+	int say_fraction() {
+		return 1;
+	}
+}
\ No newline at end of file
diff --git a/altoslib/AltosHeight.java b/altoslib/AltosHeight.java
new file mode 100644
index 00000000..da7ffdae
--- /dev/null
+++ b/altoslib/AltosHeight.java
@@ -0,0 +1,43 @@
+/*
+ * Copyright © 2012 Keith Packard <keithp@keithp.com>
+ *
+ * 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; version 2 of the License.
+ *
+ * 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.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ */
+
+package org.altusmetrum.AltosLib;
+
+public class AltosHeight extends AltosUnits {
+
+	public double value(double v) {
+		if (AltosConvert.imperial_units)
+			return AltosConvert.meters_to_feet(v);
+		return v;
+	}
+
+	public String show_units() {
+		if (AltosConvert.imperial_units)
+			return "ft";
+		return "m";
+	}
+
+	public String say_units() {
+		if (AltosConvert.imperial_units)
+			return "feet";
+		return "meters";
+	}
+
+	int show_fraction(int width) {
+		return width / 9;
+	}
+}
\ No newline at end of file
diff --git a/altoslib/AltosPreferences.java b/altoslib/AltosPreferences.java
index 13fee46d..065b6e99 100644
--- a/altoslib/AltosPreferences.java
+++ b/altoslib/AltosPreferences.java
@@ -93,6 +93,10 @@ public class AltosPreferences {
 	public final static String	frequency_format = "FREQUENCY-%d";
 	public final static String	description_format = "DESCRIPTION-%d";
 
+	/* Units preference */
+
+	public final static String	unitsPreference = "IMPERIAL-UNITS";
+
 	public static AltosFrequency[] load_common_frequencies() {
 		AltosFrequency[] frequencies = null;
 		boolean	existing = false;
@@ -176,6 +180,7 @@ public class AltosPreferences {
 
 		common_frequencies = load_common_frequencies();
 
+		AltosConvert.imperial_units = preferences.getBoolean(unitsPreference, false);
 	}
 
 	static { init(); }
@@ -356,4 +361,16 @@ public class AltosPreferences {
 			new_frequencies[i+1] = common_frequencies[i];
 		set_common_frequencies(new_frequencies);
 	}
+
+	public static boolean imperial_units() {
+		return AltosConvert.imperial_units;
+	}
+
+	public static void set_imperial_units(boolean imperial_units) {
+		AltosConvert.imperial_units = imperial_units;
+		synchronized (preferences) {
+			preferences.putBoolean(unitsPreference, imperial_units);
+			flush_preferences();
+		}
+	}
 }
diff --git a/altoslib/AltosSpeed.java b/altoslib/AltosSpeed.java
new file mode 100644
index 00000000..4e2daf5a
--- /dev/null
+++ b/altoslib/AltosSpeed.java
@@ -0,0 +1,43 @@
+/*
+ * Copyright © 2012 Keith Packard <keithp@keithp.com>
+ *
+ * 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; version 2 of the License.
+ *
+ * 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.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ */
+
+package org.altusmetrum.AltosLib;
+
+public class AltosSpeed extends AltosUnits {
+
+	public double value(double v) {
+		if (AltosConvert.imperial_units)
+			return AltosConvert.meters_to_mph(v);
+		return v;
+	}
+
+	public String show_units() {
+		if (AltosConvert.imperial_units)
+			return "mph";
+		return "m/s";
+	}
+
+	public String say_units() {
+		if (AltosConvert.imperial_units)
+			return "miles per hour";
+		return "meters per second";
+	}
+
+	int show_fraction(int width) {
+		return width / 9;
+	}
+}
\ No newline at end of file
diff --git a/altoslib/AltosUnits.java b/altoslib/AltosUnits.java
new file mode 100644
index 00000000..47540c61
--- /dev/null
+++ b/altoslib/AltosUnits.java
@@ -0,0 +1,57 @@
+/*
+ * Copyright © 2012 Keith Packard <keithp@keithp.com>
+ *
+ * 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; version 2 of the License.
+ *
+ * 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.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ */
+
+package org.altusmetrum.AltosLib;
+
+public abstract class AltosUnits {
+
+	public abstract double value(double v);
+
+	public abstract String show_units();
+
+	public abstract String say_units();
+
+	abstract int show_fraction(int width);
+
+	int say_fraction() {
+		return 0;
+	}
+
+	private String show_format(int width) {
+		return String.format("%%%d.%df %s", width, show_fraction(width), show_units());
+	}
+
+	private String say_format() {
+		return String.format("%%1.%df", say_fraction());
+	}
+
+	private String say_units_format() {
+		return String.format("%%1.%df %s", say_fraction(), say_units());
+	}
+
+	public String show(int width, double v) {
+		return String.format(show_format(width), value(v));
+	}
+
+	public String say(double v) {
+		return String.format(say_format(), value(v));
+	}
+
+	public String say_units(double v) {
+		return String.format(say_units_format(), value(v));
+	}
+}
\ No newline at end of file
diff --git a/altoslib/Makefile.am b/altoslib/Makefile.am
index 39b43f3d..a9f810f9 100644
--- a/altoslib/Makefile.am
+++ b/altoslib/Makefile.am
@@ -68,7 +68,12 @@ AltosLib_JAVA = \
 	$(SRC)/AltosTelemetryRecordMegaData.java \
 	$(SRC)/AltosMs5607.java \
 	$(SRC)/AltosIMU.java \
-	$(SRC)/AltosMag.java
+	$(SRC)/AltosMag.java \
+	$(SRC)/AltosUnits.java \
+	$(SRC)/AltosDistance.java \
+	$(SRC)/AltosHeight.java \
+	$(SRC)/AltosSpeed.java \
+	$(SRC)/AltosAccel.java
 
 JAR=AltosLib.jar