+++ /dev/null
-/*
- * 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; either version 2 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.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
- */
-
-package org.altusmetrum.micropeak;
-
-import java.io.*;
-import org.altusmetrum.altoslib_11.*;
-import org.altusmetrum.altosuilib_11.*;
-
-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;
-
- for (MicroDataPoint point : data.points()) {
- landed_height = point.height;
- landed_time = point.time;
- }
-
- boolean above = false;
- for (MicroDataPoint point : data.points()) {
- if (point.height > landed_height + 10) {
- above = true;
- } else {
- if (above && point.height < landed_height + 2) {
- above = false;
- landed_time = point.time;
- }
- }
- }
- }
-
- void find_apogee() {
- apogee_height = data.apogee_height();
- double searched_apogee = 0;
- apogee_time = 0;
-
- /* This just finds the apogee time -- we've recorded the
- * peak altitude separately in eeprom, and that could
- * have occurred after the eeprom was full.
- */
- for (MicroDataPoint point : data.points()) {
- if (point.height > searched_apogee) {
- searched_apogee = point.height;
- apogee_time = point.time;
- }
- }
- }
-
- void find_coast() {
- coast_height = 0;
- coast_time = 0;
-
- for (MicroDataPoint point : data.points()) {
- if (point.accel < -9.8)
- break;
- coast_time = point.time;
- coast_height = point.height;
- }
- }
-
- void find_max_speed() {
- max_speed = 0;
- for (MicroDataPoint point : data.points()) {
- if (point.time > apogee_time)
- break;
- if (point.speed > max_speed)
- max_speed = point.speed;
- }
- }
-
- void find_max_accel() {
- max_accel = 0;
- for (MicroDataPoint point : data.points()) {
- if (point.time > apogee_time)
- break;
- if (point.accel > max_accel)
- max_accel = point.accel;
- }
- }
-
- 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 static final int state_startup = -1;
- public static final int state_pad = 0;
- public static final int state_boost = 1;
- public static final int state_coast = 2;
- public static final int state_descent = 3;
- public static final int state_landed = 4;
-
- static final String state_names[] = {
- "pad",
- "boost",
- "coast",
- "descent",
- "landed"
- };
-
- public int state(double t) {
- if (t >= landed_time)
- return state_landed;
- if (t >= apogee_time)
- return state_descent;
- if (t >= coast_time)
- return state_coast;
- if (t >= 0)
- return state_boost;
- return state_pad;
- }
-
- public static String state_name(int state) {
- if (state < 0 || state > state_landed)
- return "unknown";
- return state_names[state];
- }
-
- public String state_name(double t) {
- return state_name(state(t));
- }
-
- public MicroStats(MicroData data) {
-
- this.data = data;
-
- find_coast();
- find_apogee();
- find_landing();
- find_max_speed();
- find_max_accel();
- }
-
- public MicroStats() {
- this(new MicroData());
- }
-}
projects / fw / altos / blobdiff