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astrohopper.html
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<!DOCTYPE>
<html>
<head>
<title>AstroHopper - Web Application for Sky Navigation</title>
<link rel="manifest" href="manifest.json">
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no" />
</head>
<style>
body, td { margin:3mm 0 0 0; font-size: 5mm ; color:red ; font-family: sans; background-color:black }
a:link {color: red;}
a:visited { color: red; }
a:active { color:red; }
a:hover { color:red; }
button { border-radius:2mm; height:10mm; font-size:5mm ; text-align:center; vertical-align: middle; background-color:black; color:red; border: 2px solid red }
.comp_but, .incdec_but { width: 10mm ; height:10mm; font-size:5mm ; padding: 0 }
.comp_but { float:right }
.only_tiny { display : none }
.only_tiny_tr { display : none }
.only_full { display : inline }
.only_tiny_b { display : none }
#search_field_main_ok {
position:absolute;
top:31mm;
right:10%;
height:10mm;
border:0px;
margin-left:1mm;
display:none;
background-color: transparent;
}
#main_search_button {
position:absolute;
right:27mm;
margin:0;
top:3mm;
}
#search_field_main {
position:absolute;
right:12mm;
top:3mm;
margin:0;
border-radius:2mm;
width:15mm;
padding-left:1mm;
font-size:66%;
}
#search_field_main:focus {
position:absolute;
right:10%;
left:10%;
top:31mm;
padding:0;
width:80%;
font-size:100%;
}
.first_line_controls {
padding:0;
margin:1mm 1mm 1mm 1mm;
}
.manual_background {
background: url(manual-blk.png) no-repeat center center;
background-size: 10mm 10mm;
}
.compass_background {
background: url(compass-blk.png) no-repeat center center;
background-size: 10mm 10mm;
}
.wiki_background {
background: url(wiki.png) no-repeat center center;
background-size: 10mm 10mm;
}
.search_background {
background: url(search.png) no-repeat center center;
background-size: 10mm 10mm;
}
.nocompass_background {
background: url(nocompass-blk.png) no-repeat center center;
background-size: 10mm 10mm;
}
.settings_background {
background: url(settings-blk.png) no-repeat center center;
background-size: 10mm 10mm;
}
input[type=text], input[type=text]:focus, textarea, input[type=submit]{
border: 2px solid red;
color:red;
background-color:black;
}
input[type=text], input[type=text]:focus, input[type=submit] {
height:10mm;
font-size:5mm;
padding: 0;
vertical-align: middle; background-color:black;
}
input[type=submit] { width:10mm;}
</style>
<body>
<canvas style="position:absolute; left:0; top:0; z-index:-1" id="myCanvas" width="640" height="480"> </canvas>
<div class="only_full">
<input id="search_field_main" class="search_field" autocomplete="off" type="text" value="search" onkeyup="mainSearchDoneCheck(event);" oninput="mainSearchFindTarget(this.value);" onfocus="mainSearchFocus();" onclick="mainSearchFocus();" onfocusout="mainSearchOnFocusChange(false);" onfocusin="mainSearchOnFocusChange(true)" />
<button class="incdec_but search_background" id="main_search_button" style="display:none; margin-right:1mm;" onclick="reShearchMain();"> </button>
<button id="search_field_main_ok" ></button>
</div>
<p class="first_line_controls" >
<span class="only_full"><button class="ui_but" onclick="align();">Align</button></span>
<span class="only_tiny"><button class="incdec_but" onclick="align();">◎</button></span>
<span id="countdown"></span>
<span class="only_tiny" id="alignment_tiny"></span><span class="only_full" id="alignment"></span>
<button class="comp_but nocompass_background" id="nocompass_button" style="display:none"> </button>
<button class="comp_but manual_background" id="hand_button" style="display:none;" onclick="manualMode();"> </button>
<button class="comp_but compass_background" id="compass_button" style="display:none" onclick="compassMode();"> </button>
</p>
<p class="first_line_controls only_full_b">
<button class="incdec_but" onclick="incFOV();">-</button>
<button class="incdec_but" onclick="decFOV();">+</button>
∠<span class="fov_val">60°</span>
<button style="display:inline" class="comp_but settings_background" onclick="showConfig('inline');"> </button>
</p>
<p class="only_tiny_b first_line_controls"><button class="comp_but settings_background" onclick="showConfig('inline');"> </button>
</p>
<p class="first_line_controls" style="display:none" id="wl_ctl"><button class="incdec_but" onclick="watchListItemUpdate(-1);"><</button> <button class="incdec_but" onclick="watchListItemUpdate(1);">></button><br/><i><span id="wl_target_name"></span></i></p>
<p class="first_line_controls" style="display:none" id="show_info">
<button class="incdec_but wiki_background" onclick="showObjectInfo();" > </button>
</p>
<p class="first_line_controls" id="gps">No Geolocation</p>
<div id="object_log" style="display:none">
<p>Sirius:<span id="Sirius_alt"></span>, <span id="Sirius_az"></span></p>
<p>Mars:<span id="Mars_alt"></span>, <span id="Mars_az"></span></p>
<p>Rigel:<span id="Rigel_alt"></span>, <span id="Rigel_az"></span></p>
<p>Jupiter:<span id="Jupiter_alt"></span>, <span id="Jupiter_az"></span></p>
</div>
<p class="first_line_controls" id="orient"></p>
<p class="first_line_controls" id="status"></p>
<div class="config_div" id="quick_start" style="display:none; position:absolute; left:10%; top:10%; z-index:4 ; padding: 1% 1% 1% 1%; width: 78%; background:black; border: 1px solid red ; text-align:left ">
<span style="position:absolute; right:1mm; top:1mm">
<button class="incdec_but" onclick="qsHide()">X</button>
</span>
<h3>Quick Start Guide</h3>
<p><input class="dso_selector" id="qs_hide_1" type="checkbox" onchange="showOnStartup(!this.checked,1)" /><label for="qs_hide_1" >Don't show on startup</label></p>
<div id="qs_1">
<p>
<button class="ui_but" disabled style="color:#800">< Prev</button>
<button class="ui_but" onclick="qsShowHide(2,1)">Next ></button>
</p>
<img style="float:right" width="50%" src="images/qs_1_1.png" alt="Setup" />
<p>Connect the smartphone to the optical tube such that its top points to the viewing direction and it lies flat on the tube.</p>
<hr style="border-color:red">
<p><i><a href="https://stories.bringthemhomenow.net/">We want you back.</a></i></p>
<p><b>Stand with Israel against terror!</b></p>
</div>
<div id="qs_2" style="display:none;">
<p>
<button class="ui_but" onclick="qsShowHide(1,2)">< Prev</button>
<button class="ui_but" onclick="qsShowHide(3,2)">Next ></button>
</p>
<img style="float:right" width="50%" src="images/qs_2_1.png" alt="Setup" />
<p>Point the telescope to an easily identifiable star or planet <strong>nearby</strong> an object you want to find. For example in order to find M41 or M47, point the telescope to Sirius — this is going to be the <em>alignment star</em>.</p>
<p>When the telescope is pointing to the alignment star tap <button class="ui_but">Align</button> button and tap on the alignment star on the map. Once the application is aligned, it tracks the telescope movement using smartphone's sensors.</p>
</div>
<div id="qs_3" style="display:none;">
<p>
<button class="ui_but" onclick="qsShowHide(2,3)">< Prev</button>
<button class="ui_but" onclick="qsShowHide(4,3)">Next ></button>
</p>
<p>If you can't see the alignment star on the map, there may be a common compass accuracy problem.</p>
<p>In such a case tap on <button class="incdec_but manual_background"> </button> to switch to manual mode and scroll the map left
or right till you see the alignment star.</p>
<p>Then tap <button class="ui_but">Align</button> and tap on the alignment star on the map as usual.</p>
</div>
<div id="qs_4" style="display:none;">
<p>
<button class="ui_but" onclick="qsShowHide(3,4)">< Prev</button>
<button class="ui_but" disabled style="color:#800">Next ></button>
</p>
<img style="float:right" width="50%" src="images/qs_3_1.png" alt="Setup" />
<p>Once aligned, tap on the object you want to find (for example M41, M47) and follow the direction line on the map till you reach the target. Now you can observe the object you selected.</p>
<p>It is recommended to repeat alignment for each new target you want to find</p>
<p>For detailed instruction and troubleshooting please refer to the <a href="https://youtu.be/AtArqBLWWJ8">[Video Tutorial]</a>
and to the integrated manual via:
<button class="incdec_but settings_background"> </button> → <button class="incdec_but">?</button>
</p>
</div>
</div>
<div class="config_div" id="wiki_info" style="display:none; position:absolute; left:5%; top:5%; right:5%; bottom:5%; z-index:3; padding: 1% 1% 1% 1%; background:black; border: 1px solid red ">
<span style="position:absolute; right:1mm; top:1mm">
<button class="incdec_but" onclick="hideWiki();">X</button>
</span>
<iframe id="wiki_iframe" style="width:100%; height:100%"></iframe>
</div>
<div class="config_div" id="allow_orientation" style="display:none; position:absolute; left:10%; top:10%; z-index:3 ; padding: 1% 1% 1% 1%; width: 78%; background:black; border: 1px solid red ; text-align:center ">
<button class="ui_but" style="height:30mm" onclick="iOSOrientation();">Enable Device Orientation</button>
</div>
<div class="config_div" id="config" style="display:none; position:absolute; left:5%; top:5%; z-index:2 ; padding: 1% 1% 1% 1%; width: 88%; background:black; border: 1px solid red ">
<span style="position:absolute; right:1mm; top:1mm">
<button class="incdec_but" onclick="showManual(true)">?</button>
<button class="incdec_but" onclick="showConfig('none');">X</button>
</span>
<p><b>Settings (version)</b></p>
<p>
<button class="ui_but" onclick="resetAll();">↻</button>
<input class="dso_selector" id="small_screen" type="checkbox" /><label for="small_screen" >Small UI</label>
<input class="dso_selector" id="NM_checked" type="checkbox" /><label for="NM_checked" >Night</label>
<input class="dso_selector" id="FS_checked" type="checkbox" onchange="toggleFS(this.checked)" /><label for="FS_checked" >Full S.</label>
</p>
<table>
<tr class="only_tiny_tr">
<td>FOV</td>
<td>
<button class="incdec_but" onclick="incFOV();">-</button> <button class="incdec_but" onclick="decFOV();">+</button>
</td>
<td>
∠<span class="fov_val">60°</span>
</td>
<td> </td>
</tr>
<tr>
<td>Stars</td>
<td>
<button class="incdec_but" onclick="starMagUpdate(-1);">-</button> <button class="incdec_but" onclick="starMagUpdate(1);">+</button>
</td>
<td>
<i>m≤</i><span id="mag_val">4</span>
</td>
<td> </td>
</tr>
<tr>
<td>DSO</td>
<td>
<button class="incdec_but" onclick="dsoMagUpdate(-1);">-</button> <button class="incdec_but" onclick="dsoMagUpdate(1)">+</button>
</td>
<td>
<i>m≤</i><span id="dso_level_val">5</span>
</td>
<td> </td>
</tr>
<tr>
<td>List</td>
<td>
<button class="incdec_but" onclick="prevWatchList();"><</button> <button class="incdec_but" onclick="nextWatchList()">></button>
</td>
<td id="wl_sel">None</td>
<td>
<a id="list_edit_toggle" href="javascript:toggleEditWL()">[edit]</a>
</td>
</tr>
<tr>
<td>Font</td>
<td>
<button class="incdec_but" onclick="incDecLF(-1);">-</button> <button class="incdec_but" onclick="incDecLF(1)">+</button>
</td>
<td>
<i>+</i><span id="lf_val">0</span><i>mm</i>
</td>
<td> </td>
</tr>
</table>
<div id="wl_edit" style="display:none;">
<p>name: dso1, dso2, dso3, …</p>
<p>
<textarea id="user_wl" style="width:80%" rows="5"></textarea>
</p>
<p><button class="ui_but" onclick="saveWL();" >Save</button> <button class="ui_but" onclick="discardWL();" >Discard</button></p>
<p id="wl_errors"></p>
</div>
<form onsubmit="return hideSettingIfSelectionOk()" >
<p> <input id="search_field" type="text" oninput="findTargetByName(this.value)" onclick="this.value='';" onfocus="findTargetByName(this.value)" style="width:30%" /> <input type="submit" value="⌕"/> <b><span style="float:right" id="find_status"><span></b></p>
</form>
<table style="width:100%">
<tr>
<td>
<input class="dso_selector" id="align_dso_checked" type="checkbox" /><label for="align_dso_checked" >Align on DSO</label>
</td>
<td>
<input class="dso_selector" id="show_star_names_checked" type="checkbox" checked="checked" onchange="global_show_star_names = this.checked;" /><label for="show_star_names_checked" >Star Names</label>
</td>
</tr>
<tr>
<td>
<input class="dso_selector" id="Oc_checked" type="checkbox" checked="checked" /><label for="Oc_checked">Open Clusters</label>
</td>
<td>
<input class="dso_selector" id="Gc_checked" type="checkbox" checked="checked" /><label for="Gc_checked">Glob. Clusters</label>
</td>
</tr>
<tr>
<td>
<input class="dso_selector" id="Ne_checked" type="checkbox" checked="checked" /><label for="Ne_checked">Nebulae</label>
</td>
<td>
<input class="dso_selector" id="Ga_checked" type="checkbox" checked="checked" /><label for="Ga_checked">Galaxies</label>
</td>
</tr>
<tr>
<td>
<input class="dso_selector" id="P_checked" type="checkbox" checked="checked" /><label for="P_checked" >Planets</label>
</td>
<td>
<input class="dso_selector" id="Ca_checked" type="checkbox" checked="checked" /><label for="Ca_checked">Constellations</label>
</td>
</tr>
<tr>
<td>
<input class="dso_selector" id="qs_hide_2" type="checkbox" checked="checked" onchange="showOnStartup(this.checked,2);" /><label for="qs_hide_2">Show Tutorial</label>
</td>
<td>
<input class="dso_selector" id="pinch_zoom" type="checkbox" checked="checked" /><label for="pinch_zoom">Pinch Zoom</label>
</td>
</tr>
<tr>
<td>
</td>
<td>
Wiki:
<select id="wiki_info_opt" onchange="wikiInfoConfig()">
<option value="no">Never</option>
<option selected value="day">Day Only</option>
<option value="always">Always</option>
</select>
</td>
</tr>
</table>
<p><input class="dso_selector" id="U_checked" type="checkbox" checked="checked" /><label for="U_checked">User Objects</label> <a id="edit_user_dso" href="javascript:toggleEditDSO();">[edit]</a></p>
<div id="dso_edit" style="display:none;">
<p>Name,RA(hh:mm:ss),DE(±dd:mm:ss)</p>
<p>
<textarea id="user_dso" style="width:80%" rows="5"></textarea>
</p>
<p><button class="ui_but" onclick="saveUserDSO();" >Save</button> <button class="ui_but" onclick="discardUserDSO();" >Discard</button></p>
<p id="dso_errors"></p>
</div>
<hr>
<p><button class="incdec_but" onclick="requestGeolocation();">↻</button> GPS: <span id="lat">Unknown</span>, <span id="lon">Unknown</span></p>
<p>α=<span id="ang_a"></span> β=<span id="ang_b"></span> γ=<span id="ang_g"></span> C=<span id="ang_c"></span> UTC=<span id="utc_time"></span></p>
</div>
<div style="position:absolute; left:0; top:0; z-index:5; width:100%; background:black; display:none;" id="manual">
<span style="float:right; margin-right: 2mm; margin-top:2mm">
<button class="incdec_but" onclick="showManual(false);">X</button>
</span>
MANUAL
</div>
<script src="vsop87a_combined.js"></script>
<script src="vsop87-multilang/Languages/JavaScript/CelestialProgrammingReduce.js"></script>
<script>
vsop87a_full = vsop87a_xsmall;
vsop87a_full_velocities = vsop87a_milli_velocities;
</script>
<script src="jsdb.js"></script>
<script>
var global_day_style = {
cross : 'blue',
constelations : 'yellow',
bearing : 'green',
star : 'white',
altaz : 'red',
target : 'cyan',
align : 'magenta'
};
var global_show_obj = {
'S': true,
'Oc': true,
'Gc': true,
'Ca': true,
'Ga':true,
'Ne':true,
'P': true,
'U': true
};
var global_night_style = {
cross : 'red',
constelations : '#880000',
bearing : 'red',
star : 'red',
altaz : 'red',
target : 'red',
align : '#AA0000'
};
var global_style = global_day_style;
var global_align_on_dso=false;
var global_show_star_names=true;
var global_targets_list = [];
var global_prev_xy=null;
var global_start_zoom_size = null;
var global_start_zoom = null;
var global_allow_pinch_zoom = true;
var global_toch_start_time = null;
var global_target_index = -1;
var global_align_index = -1;
var global_expecting_select = null;
var global_camera_projection = true;
var global_expected_frame_rate_ms = 66;
var global_use_compass = false;
var global_dso_mag = parseInt(document.getElementById('dso_level_val').innerHTML);
var global_large_font = 0;
var global_fov_values = [7,15,30,60,90,120,150]
var global_fov = 60;
var global_mag = 4;
var gdata = {
"lat" : 31.9,
"lon" : 34.8,
"compass_alpha" : 0,
"alpha" : 0,
"alpha_user_offset" : 0,
"alpha_gyro" : 0,
"alpha_diff" : 0,
"beta" : 0,
"gamma" : 0,
"time" : Date.now(), //1614716453109
}
var global_align_matrix = [1,0,0,0,1,0,0,0,1];
var global_use_gyro = false;
var global_full_screen = false;
var global_status = "";
var global_watchlist = null;
function showManual(v)
{
document.getElementById('manual').style.display = v ? 'inline' : 'none';
}
function qsHide()
{
document.getElementById('quick_start').style.display = 'none';
}
function qsShowHide(show_id,hide_id)
{
document.getElementById('qs_' + hide_id).style.display = 'none';
document.getElementById('qs_' + show_id).style.display = 'inline';
}
function setDisplayByClass(cls,value)
{
var el = document.getElementsByClassName(cls);
for(var i=0;i<el.length;i++) {
el[i].style.display = value;
}
}
function smallScreen(v)
{
var tiny = v ? 'inline' : 'none';
var tiny_tr = v ? 'table-row' : 'none';
var tiny_b = v ? 'block' : 'none';
var full = v ? 'none' : 'inline';
var full_b = v ? 'none' : 'block';
setDisplayByClass('only_tiny_tr',tiny_tr);
setDisplayByClass('only_tiny',tiny);
setDisplayByClass('only_tiny_b',tiny_b);
setDisplayByClass('only_full',full);
setDisplayByClass('only_full_b',full_b);
}
function showStatus(v)
{
global_status += v+"<br/>"
document.getElementById('status').innerHTML = global_status;
}
function showConfig(v)
{
document.getElementById('config').style.display = v;
}
function largeF(n,s)
{
return (s+global_large_font) + "mm " +n;
}
function toggleFS(fs)
{
if(fs) {
document.documentElement.requestFullscreen({navigationUI:'hide'});
}
else {
document.exitFullscreen();
}
}
function hideSettingIfSelectionOk()
{
var value = document.getElementById("search_field").value;
if(findTargetByName(value)) {
showConfig('none')
}
return false;
}
function normalizeName(name)
{
name = name.toUpperCase()
const re=/^(.*)(([A-Z]+)[ 0]+)([^0].*)$/;
var match = name.match(re);
if(match) {
return normalizeName(match[1]+match[3]+match[4]);
}
return name;
}
function reShearchMain()
{
findTargetByName(document.getElementById('search_field_main').value);
}
function mainSearchOnFocusChange(val)
{
if(!val) {
var isOk = document.getElementById('search_field_main_ok');
isOk.style.display = 'none';
var el = document.getElementById('search_field_main');
var content = el.value;
reShearchMain();
if(content.trim()=='') {
el.value='search';
}
}
var but = document.getElementById('main_search_button');
if(!val && global_target_index >= 0) {
but.style.display='inline';
}
else {
but.style.display='none';
}
}
function mainSearchOnSubmit()
{
document.getElementById('search_field_main').blur();
return false;
}
function mainSearchDoneCheck(e)
{
if(e.key == "Enter") {
mainSearchOnSubmit();
}
}
function mainSearchFindTarget(name)
{
findTargetByName(name.trim());
var el = document.getElementById('search_field_main');
var isOk = document.getElementById('search_field_main_ok');
isOk.style.display = 'inline';
isOk.innerHTML= (global_target_index>=0) ? "✓" : "✗";;
}
function mainSearchFocus()
{
document.getElementById('search_field_main').value="";
event.stopPropagation();
}
function findTargetByName(name ='')
{
var found = document.getElementById('find_status')
var name = normalizeName(name);
var N=allstars_index_name.names.length;
var found_index = -1;
if(name != '') {
for(var i=0;i<N;i++) {
let candidate = allstars_index_name.names[i];
if(candidate == name) {
found_index = i;
break;
}
else if(found_index != -2 && candidate.startsWith(name)) {
if(found_index == -1) {
found_index = i;
}
else {
found_index = -2;
}
}
}
}
if(found_index >= 0) {
global_target_index = allstars_index_name.index[found_index];
found.innerHTML = allstars[global_target_index].name;
showHideInfoIcon();
return true;
}
else {
global_target_index = -1;
found.innerHTML = '';
showHideInfoIcon();
return false;
}
}
function starMagUpdate(offset)
{
global_mag += offset;
global_mag = Math.max(1,Math.min(6,global_mag));
updateMAG()
}
function updateMAG()
{
document.getElementById("mag_val").innerHTML = global_mag + "";
saveMagVal(global_mag,"mag_val");
}
function incFOV()
{
var N = global_fov_values.length;
for(var i=0;i<N-1;i++) {
if(global_fov == global_fov_values[i]
|| (global_fov_values[i] < global_fov && global_fov < global_fov_values[i+1]))
{
global_fov = global_fov_values[i+1];
break;
}
}
updateFOV()
}
function decFOV()
{
var N = global_fov_values.length;
for(var i=N-1;i>0;i--) {
if(global_fov == global_fov_values[i]
|| (global_fov_values[i-1] < global_fov && global_fov < global_fov_values[i]))
{
global_fov = global_fov_values[i-1];
break;
}
}
updateFOV();
}
function updateFOV()
{
var vals = document.getElementsByClassName("fov_val");
for(var i=0;i<vals.length;i++) {
vals[i].innerHTML = global_fov + "°";
}
}
function setUseGyro(val,message=null,message_tiny=null)
{
global_use_gyro = val;
if(message) {
var status = message;
}
else {
var status= global_use_gyro ? "Aligned" : "Not Aligned";
}
if(message_tiny) {
var status_t = message_tiny;
}
else {
var status_t = global_use_gyro ? "✓" : "✗";
}
document.getElementById("alignment").innerHTML = status;
document.getElementById("alignment_tiny").innerHTML = status_t;
}
function resetAll()
{
global_expecting_select = selectTarget;
findTargetByName();
global_target_index = -1;
showHideInfoIcon();
document.getElementById('find_status').innerHTML = '';
global_align_index = -1;
setUseGyro(false);
}
function align()
{
if(global_expecting_select == doNothing)
return;
/// realign in manual mode
if(global_use_gyro && !global_use_compass) {
// keep bearing
gdata.alpha_user_offset = gdata.alpha_gyro + gdata.alpha_diff - gdata.alpha;
}
setUseGyro(false,"Select Star","?");
global_align_index = -1;
global_expecting_select = selectAlignWithTimer;
}
function normV(v)
{
var len = Math.sqrt(v[0]*v[0]+v[1]*v[1]+v[2]*v[2]);
return [v[0]/len,v[1]/len,v[2]/len];
}
function matMul(A,B)
{
var v1 = mvec(A,[B[0],B[3],B[6]]);
var v2 = mvec(A,[B[1],B[4],B[7]]);
var v3 = mvec(A,[B[2],B[5],B[8]]);
return [v1[0],v2[0],v3[0],
v1[1],v2[1],v3[1],
v1[2],v2[2],v3[2]];
}
function matAdd(A,alpha,B,beta)
{
var res = [];
for(var i=0;i<9;i++) {
res.push(A[i]*alpha + B[i]*beta);
}
return res;
}
function matEye()
{
return [1,0,0, 0,1,0, 0,0,1];
}
function doNothing(index)
{
}
function selectAlignWithTimer(index,start_val=3)
{
var cd = document.getElementById("countdown");
global_align_index = index;
global_expecting_select = doNothing;
if(start_val <= 0) {
cd.innerHTML="";
selectAlign(index);
}
else {
document.getElementById("alignment").innerHTML = '';
document.getElementById("alignment_tiny").innerHTML = '';
cd.innerHTML = start_val.toFixed(1) + "s";
setTimeout(function() {
selectAlignWithTimer(index,start_val - 0.1);
},100);
}
}
function selectAlign(index)
{
var camRays = getCameraRays();
var st = allstars[index];
var tr = rayFromPos(st.RA,st.DE);
var fw = camRays[2];
var left = camRays[1];
var dAZ = Math.asin(crossProd(normV([tr[0],tr[1],0]),normV([fw[0],fw[1],0]))[2]);
var dAlt = Math.asin(tr[2]) - Math.asin(fw[2]);
// rotate around AZ axis
var daz_mat = [ Math.cos(dAZ), Math.sin(dAZ), 0,
-Math.sin(dAZ), Math.cos(dAZ), 0,
0, 0, 1];
// rotate around up/dwn - axis of the camera
var u0 = left[0];
var u1 = left[1];
var u2 = left[2];
var W = [ 0, -u2, u1, u2, 0, -u0, -u1, u0, 0 ]
var dalt_mat = matAdd(matEye(),1,W,Math.sin(-dAlt));
dalt_mat = matAdd(dalt_mat,1,matMul(W,W),2*Math.sin(-dAlt/2)*Math.sin(-dAlt/2));
//global_align_matrix = daz_mat;
global_align_matrix = matMul(daz_mat,dalt_mat);
setUseGyro(true);
gdata.alpha_diff = (gdata.alpha + gdata.alpha_user_offset) - gdata.alpha_gyro;
global_align_index = index;
global_expecting_select = selectTarget;
}
/// rotation matrix is
/// taken from https://www.w3.org/TR/2016/CR-orientation-event-20160818/#worked-example-2
var degtorad = Math.PI / 180; // Degree-to-Radian conversion
function getRotationMatrix( alpha, beta, gamma ) {
var _x = beta ? beta * degtorad : 0; // beta value
var _y = gamma ? gamma * degtorad : 0; // gamma value
var _z = alpha ? alpha * degtorad : 0; // alpha value
var cX = Math.cos( _x );
var cY = Math.cos( _y );
var cZ = Math.cos( _z );
var sX = Math.sin( _x );
var sY = Math.sin( _y );
var sZ = Math.sin( _z );
//
// ZXY rotation matrix construction.
//
var m11 = cZ * cY - sZ * sX * sY;
var m12 = - cX * sZ;
var m13 = cY * sZ * sX + cZ * sY;
var m21 = cY * sZ + cZ * sX * sY;
var m22 = cZ * cX;
var m23 = sZ * sY - cZ * cY * sX;
var m31 = - cX * sY;
var m32 = sX;
var m33 = cX * cY;
return [
m11, m12, m13,
m21, m22, m23,
m31, m32, m33
];
};
function mvec(m,v)
{
return [ m[0] * v[0] + m[1] * v[1] + m[2] * v[2],
m[3] * v[0] + m[4] * v[1] + m[5] * v[2],
m[6] * v[0] + m[7] * v[1] + m[8] * v[2] ];
}
function crossProd(a,b)
{
return [ a[1]*b[2] - a[2]*b[1],
a[2]*b[0] - a[0]*b[2],
a[0]*b[1] - a[1]*b[0] ];
}
function getCameraRays()
{
// zxy
// after Mul comonents are [S,E,D]
var alpha = global_use_gyro ? gdata.alpha_gyro + gdata.alpha_diff : gdata.alpha + gdata.alpha_user_offset;
var M = getRotationMatrix(alpha,gdata.beta,gdata.gamma);
//var top = mvec(M,[1,0,0]);
//var lft = mvec(M,[0,1,0]);
//var fwd = mvec(M,[0,0,-1]);
var fwd = mvec(M,[0,1,0]);
// make sure left is horizontal
var fwd_hlen = Math.sqrt(fwd[0]*fwd[0] + fwd[1]*fwd[1])
var fwd_hor = [fwd[0]/fwd_hlen,fwd[1]/fwd_hlen,0.0];
var lft = [-fwd_hor[1],fwd_hor[0],0.0]
var top = crossProd(fwd,lft);
if(global_use_gyro) {
return [
mvec(global_align_matrix,top),
mvec(global_align_matrix,lft),
mvec(global_align_matrix,fwd)
];
}
else {
return [top,lft,fwd];
}
}
function rayFromPos(RAd,DEd)
{
var deg2rad = Math.PI / 180;
RA = RAd * deg2rad;
DE = DEd * deg2rad;
var jd = gdata.time * 1e-3 / 86400.0 + 2440587.5;
var tu = jd - 2451545.0;
var angle = Math.PI * 2 * (0.7790572732640+1.00273781191135448 * tu);
var q = angle + gdata.lon*deg2rad;
var H = q - RA;
var f = deg2rad * gdata.lat;
var az_y = Math.sin(H);
var az_x = (Math.cos(H) * Math.sin(f) - Math.tan(DE) * Math.cos(f));
var az = Math.atan2(az_y,az_x)
var sinH = Math.sin(f) * Math.sin(DE) + Math.cos(f) * Math.cos(DE) * Math.cos(H);
var hz = Math.asin(sinH)
var ray_n = -Math.cos(az) * Math.cos(hz);
var ray_e = -Math.sin(az) * Math.cos(hz);
var ray_u = Math.sin(hz);
return [ ray_e, ray_n, ray_u ];
}
function sprod(v1,v2)
{
return v1[0]*v2[0] + v1[1]*v2[1] + v1[2]*v2[2];
}
function cameraBearing(RAd,DEd,cameraRays)
{
var ray = rayFromPos(RAd,DEd);
var top = cameraRays[0];
var lft = cameraRays[1];
var fwd = cameraRays[2];
var x = -sprod(lft,ray);
var y = sprod(top,ray);
var z = sprod(fwd,ray);
return {"x":x,"y":y,"z":z};
}
function getFOV()
{
var ratio = canvas.width / canvas.height;
var fov_td,fov_lr;
if(ratio < 1) {
fov_td = global_fov;
fov_lr = fov_td * ratio;
}
else {
fov_lr = global_fov;
fov_td = fov_lr / ratio;
}
return {"lr":fov_lr,"td":fov_td};
}
function xyzTo2d(xyz,in_fov=true)
{
var deg2rad = Math.PI / 180;
var fov = getFOV();
var fov_td = fov.td * deg2rad / 2;
var fov_lr = fov.lr * deg2rad / 2;
var x=xyz.x; var y=xyz.y; var z=xyz.z;
if(z<=0)
return null;
if(global_camera_projection) {
var lim_x = Math.sin(fov_lr);
var lim_y = Math.sin(fov_td);
}
else {
x = Math.asin(x);
y = Math.asin(y)
var lim_x = fov_lr;
var lim_y = fov_td;
}
if(in_fov) {
if(x < -lim_x || x > lim_x)
return null;
if(y < -lim_y || y > lim_y)
return null;
}
return { x:(x + lim_x) / (lim_x*2), y: 1 - (y + lim_y) / (lim_y * 2) };
}
function projectToCamera(RAd,DEd,cameraRays,in_fov=true)
{
var xyz = cameraBearing(RAd,DEd,cameraRays)
return xyzTo2d(xyz,in_fov);
}
function formatSize(arcmin)
{
var res = '';
const lim_factor = 3;
if(arcmin >= 60) {
var deg = Math.floor(arcmin / 60);
res += deg + "°";
var m = Math.floor(arcmin - deg * 60);
if(arcmin < 60 * lim_factor && m != 0) {
res += m + "′";
}
}
else if(arcmin >= 1) {
var m = Math.floor(arcmin);
res += m + "′";
var s = Math.floor((arcmin - m)*60)
if(arcmin < 1 * lim_factor && s != 0) {