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/*
* Copyright © 2011 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.micropeak;
import java.io.*;
import org.altusmetrum.AltosLib.*;
import org.altusmetrum.altosuilib.*;
public class MicroStats {
double coast_height;
double coast_time;
double apogee_height;
double apogee_time;
double landed_height;
double landed_time;
double max_speed;
double max_accel;
MicroData data;
void find_landing() {
landed_height = 0;
int t = 0;
for (double height : data.heights()) {
landed_height = height;
t++;
}
landed_time = data.time(t);
t = 0;
boolean above = false;
for (double height : data.heights()) {
if (height > landed_height + 10) {
above = true;
} else {
if (above && height < landed_height + 2) {
above = false;
landed_time = data.time(t);
}
}
t++;
}
}
void find_apogee() {
apogee_height = 0;
apogee_time = 0;
int t = 0;
for (double height : data.heights()) {
if (height > apogee_height) {
apogee_height = height;
apogee_time = data.time(t);
}
t++;
}
}
void find_coast() {
coast_height = 0;
coast_time = 0;
int t = 0;
for (double accel : data.accels()) {
if (accel < -9.8)
break;
t++;
}
coast_time = data.time(t);
int coast_t = t;
t = 0;
for (double height : data.heights()) {
if (t >= coast_t) {
coast_height = height;
break;
}
t++;
}
}
void find_max_speed() {
max_speed = 0;
int t = 0;
for (double speed : data.speeds()) {
if (data.time(t) > apogee_time)
break;
if (speed > max_speed)
max_speed = speed;
t++;
}
}
void find_max_accel() {
max_accel = 0;
int t = 0;
for (double accel : data.accels()) {
if (data.time(t) > apogee_time)
break;
if (accel > max_accel)
max_accel = accel;
t++;
}
}
double boost_duration() {
return coast_time;
}
double boost_height() {
return coast_height;
}
double boost_speed() {
return coast_height / coast_time;
}
double boost_accel() {
return boost_speed() / boost_duration();
}
double coast_duration() {
return apogee_time - coast_time;
}
double coast_height() {
return apogee_height - coast_height;
}
double coast_speed() {
return coast_height() / coast_duration();
}
double coast_accel() {
return coast_speed() / coast_duration();
}
double descent_duration() {
return landed_time - apogee_time;
}
double descent_height() {
return apogee_height - landed_height;
}
double descent_speed() {
return descent_height() / descent_duration();
}
public MicroStats(MicroData data) {
this.data = data;
find_coast();
find_apogee();
find_landing();
find_max_speed();
find_max_accel();
}
public MicroStats() {
this(new MicroData());
}
}
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