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const.html
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const.html
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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" content="chrome=1, IE=edge" http-equiv="X-UA-Compatible" />
<title>WWT Web Client Click Event</title>
<script src="http://www.worldwidetelescope.org/scripts/wwtsdk.aspx"></script>
<script>
// Create the WorldWide telescope object variable
var wwt;
// Create variables to hold the changeable settings
var bShowCrosshairs = true;
var bShowUI = true;
var bShowFigures = true;
var bDraw = true;
var bShowAlerts = false;
//Create variables to keep last RA and DEC
var lastRA=0;
var lastDEC=0;
var firstClick; //to know when to start a new line
var lastLine; //to be able to delete a line
// This function initializes the wwt object and registers the wwtReady event
// once the initialization is done the wwtReady event will be fired
function initialize() {
wwt = wwtlib.WWTControl.initControl("WWTCanvas");
wwt.add_ready(wwtReady);
wwt.add_clicked(wwtClick);
// // Prevent mouse wheel from scrolling page up-down:
// window.onwheel = function(){ stopWheel(); } /* IE7, IE8 */
// if(window.addEventListener){ /* Chrome, Safari, Firefox */
// window.addEventListener('DOMMouseScroll', stopWheel, false);
// }
}
// A simple function to toggle the settings
// This function is called from the checkbox entries setup in the html table
function toggleSetting(text) {
switch (text) {
case 'ShowUI':
bShowUI = !bShowUI;
wwt.hideUI(!bShowUI);
break;
case 'ShowCrosshairs':
bShowCrosshairs = !bShowCrosshairs;
wwt.settings.set_showCrosshairs(bShowCrosshairs);
break;
case 'ShowFigures':
bShowFigures = !bShowFigures;
wwt.settings.set_showConstellationFigures(bShowFigures);
break;
case 'Draw':
bDraw = !bDraw;
break;
}
}
//create polyline
function createWWTPolyLine(lineColor, lineWidth, opacity, points) {
var polyLine = wwt.createPolyLine();
polyLine.set_lineColor(lineColor);
polyLine.set_lineWidth(lineWidth);
polyLine.set_opacity(opacity);
for(var i in points) {
polyLine.addPoint(points[i][0], points[i][1]);
}
return polyLine;
}
//function for mouse click
function wwtClick(obj, eventArgs) {
//if first click: store RA,DEC; don't draw
if (firstClick) {
firstClick=false;
lastRA=eventArgs.get_RA();
lastDEC=eventArgs.get_dec();
}
//else: store new RA,DEC; draw
else {
var myPolyline = createWWTPolyLine("red", 2, 1.0, [[lastRA, lastDEC], [eventArgs.get_RA(), eventArgs.get_dec()]]);
wwt.addAnnotation(myPolyline);
lastRA=eventArgs.get_RA();
lastDEC=eventArgs.get_dec();
}
lastLine= myPolyline
}
// The wwtReady function is called by the WWT Web Control software
// This function sets up the wwt object, and the initial defaults
function wwtReady() {
wwt.settings.set_showCrosshairs(bShowCrosshairs);
wwt.settings.set_showConstellationFigures(bShowFigures);
wwt.hideUI(!bShowUI);
wwt.settings.set_showConstellationBoundries(false);
firstClick=true;
}
// Simple function to clear all the annotations from the view
function clearAnnotations() {
if (confirm("Are you sure you want to clear all your constellations?") == true) {
wwt.clearAnnotations();
firstClick=true;
} else { ;}
}
//function for pressing any key
function anyKey() {
firstClick=true;
}
//undo function
function undo() {
firstClick=true;
wwt.removeAnnotation(lastLine);
}
</script>
</head>
<body onload="initialize()" onkeypress="anyKey()">
<!-- The body section creates a table with two columns. The first contains the -->
<!-- canvas object that the WWT web client uses as the render target. And the second a table within-->
<!-- the table, containing some buttons and checkboxes.-->
<table border="2" bgcolor="black">
<tr><td>
<div id="WorldWideTelescopeControlHost">
<div id="WWTCanvas" style="width: 1000px; height: 650px; border-style: none; border-width: 0px;" ondblclick="dblclick()" >
</div>
</div>
</td><td>
<table border="0" cellspacing="4" cellpadding="4" bgcolor="D3D3D3">
<tr>
<th colspan="2"><h2 style="font-family:lucida grande">Draw your own constellations!</h2></th>
</tr>
<tr>
<th colspan="2"><h5 style="font-family:lucida grande">Re-invent the constellations! Click to select a starting object and connect stars in the sky to create your own constellations.</h5></th>
</tr>
<tr>
<th colspan = "2">
<input type="button" id="Sagittarius" value="Goto Sagittarius" onclick="GotoConstellation('Sagittarius')"/>
<input type="button" id="Aquarius" value="Goto Aquarius" onclick="GotoConstellation('Aquarius')"/></th>
</tr>
<tr>
<th style="font-family:lucida grande" colspan = "2">Settings</th>
</tr>
<!-- <tr>
<td> Show UI </td>
<td> <input id="UI" type="checkbox" checked="checked" onclick="toggleSetting('ShowUI');"/></td>
</tr>-->
<tr>
<td style="font-family:lucida grande"> Show Crosshairs</td>
<td> <input id="Crosshairs" type="checkbox" checked="checked" onclick="toggleSetting('ShowCrosshairs');"/></td>
</tr>
<tr>
<td style="font-family:lucida grande"> Show Figures </td>
<td> <input id="Figures" type="checkbox" checked="checked" onclick="toggleSetting('ShowFigures');"/></td>
</tr>
<!-- <tr>
<th colspan = "2">On Click</th>
</tr> -->
<!-- <tr>
<td> Draw Constellations </td>
<td> <input id="Draw" type="checkbox" onclick="toggleSetting('Draw');"/></td>
</tr>
<tr>
<td> Show Alerts </td>
<td> <input id="alerts" type="checkbox" onclick="toggleSetting('ShowAlerts');"/></td>
</tr> -->
<tr>
<td style="font-family:lucida grande"> Clear all the current constellations</td>
<td> <input id="clear" type="button" value="Clear" onclick="clearAnnotations();"/>
<input id="undo" type="button" value="Undo" onclick="undo();"/> </td>
</tr>
</table>
</td>
</tr>
</table>
</body>
</html>