I want to display a polyline underground in cesium.js. But I have no idea about this.
It seems that cesium has not provided official underground function for the reason that cesium cameral can not be placed undergroud,but the underground effect can be gained by an alternative way--translucent terrain.
According How to display underground entity? in Cesium-dev google group,I have achieved a barely satisfactory approach to showing the entity(including gltf models) underground.The displaying effect is as what the GIF file shows.This appoach contains mainly 3 steps.
For gif, see here.
1.change only one line code in cesium source code;get the cesium source code,then find the file named GlobeSurfaceTileProvider.js,change
command.pass = Pass.GLOBE;
to
command.pass = Pass.TRANSLUCENT;
2.generate the cesium release code with gulp tool;use your CLI to execute gulp release. PS： You may need set your node environment and install the dependency node modules and install gulp tool.
3.Implemention code.PS: note the following snippet can run only if you have changed the cesium source code which is illustrated in step one.
<!DOCTYPE html>
<html lang="en">
<head>
<!-- Use correct character set. -->
<meta charset="utf-8">
<!-- Tell IE to use the latest, best version. -->
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<!-- Make the application on mobile take up the full browser screen and disable user scaling. -->
<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, minimum-scale=1, user-scalable=no">
<title>Hello World!</title>
<script src="../Build/Cesium/Cesium.js"></script>
<style>
#import url(../Build/Cesium/Widgets/widgets.css);
html,
body,
#cesiumContainer {
width: 100%;
height: 100%;
margin: 0;
padding: 0;
overflow: hidden;
position: relative;
}
.tools {
position: absolute;
top: 20px;
left: 20px;
width: 100px;
}
</style>
</head>
<body>
<div class="container">
<div id="cesiumContainer">
</div>
<div class="tools">
Opacity: <input id="btnImageryAlpha" type="range" min="0" max="10" value="10" oninput="change()" />
</div>
</div>
<script>
function change() {
var value = document.getElementById("btnImageryAlpha").value;
if (viewer.imageryLayers) {
for (var i = 0; i < viewer.imageryLayers.length; i++) {
viewer.imageryLayers.get(i).alpha = value / 10;
}
}
console.log(value);
}
var terrainProvider = new Cesium.CesiumTerrainProvider({
url: 'https://assets.agi.com/stk-terrain/v1/tilesets/world/tiles',
requestVertexNormals: true
});
var viewer = new Cesium.Viewer('cesiumContainer', {
//skyAtmosphere: false,
//orderIndependentTranslucency: false,
baseLayerPicker: false,
terrainProvider: terrainProvider
});
//viewer.scene.globe.depthTestAgainstTerrain = false;
//change the ugly blue color to black
viewer.scene.globe.baseColor = new Cesium.Color(0, 0, 0, 0);
//default is 1
//viewer.scene.globe.imageryLayers.get(0).alpha = 0.5;
var blueBox = viewer.entities.add({
name: 'Blue box',
position: Cesium.Cartesian3.fromDegrees(-114.0, 40.0, 5),
box: {
dimensions: new Cesium.Cartesian3(400000.0, 300000.0, 500000.0),
material: Cesium.Color.BLUE
}
});
viewer.zoomTo(blueBox);
</script>
</body>
</html>
Yes, this is supported in cesium. It can be hard to see sometimes since the camera cannot go bellow the ellipsoid.
var viewer = new Cesium.Viewer('cesiumContainer');
var purpleArrow = viewer.entities.add({
name : 'Purple straight arrow at height',
polyline : {
positions : Cesium.Cartesian3.fromDegreesArrayHeights([-75, 43, -200000,
-90, 43, -200000]),
width : 10,
followSurface : false,
material : new Cesium.PolylineArrowMaterialProperty(Cesium.Color.PURPLE)
}
});
viewer.zoomTo(viewer.entities);
Live
Related
I want to have a PNG sequence that displays 68 frames of animation and then loops the final 20 frames x number of times.
I based my code on the suggestion from 'r3mainer' on your page:
[https://stackoverflow.com/questions/43595504/play-one-part-of-gif-first-then-loop-a-certain-section-indefinitely]
But I can not get it to work.
I created the vertical PNG 'film strip', a CSS file with the appropriate background style info, and a JS file referenced in an HTML.
With the PNG, the JS, the HTML, and the CSS uploaded all I get for an image on the page is the first 'frame' of the PNG strip. There are no error messages.
I think there's something I don't understand about how the JS code should be deployed.
Here's my HTML file:
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Strip Test</title>
<script src="film_strip_script.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<link rel="stylesheet" href="draw.css">
</head>
<body>
<div id="draw"></div>
</body>
The CSS:
#draw {
width: 279px;
height: 202px;
margin: 0 auto;
background: url(basquiat_strip.png) top center;
}
JavaScript file:
$(function() {
var ani = {
frame_height: 202,
num_frames: 68,
loop_frame: 30,
frame_duration: 1,
cur_frame: 0
};
window.setInterval(
function() {
$('#draw').css( 'background-position-y',
(-ani.frame_height * ani.cur_frame ) + 'px'
);
ani.cur_frame = (ani.cur_frame + 1) % ani.num_frames;
if (ani.cur_frame == 0) ani.cur_frame = ani.loop_frame;
},
ani.frame_duration
);
});
I need a direction, 'cause I don't know how to look for it, or basically how to do that.
Every time a user presses a locate button it will locate his position (already done this part)
And then, I want to give certain details about his city (in my case, I want to give corona details of people amount that are infected in the city area)
for example: so lets say the user lives in new york, and then he clicks on locate position, it gives him the amount of sick people in his area.
i used this website for my code:
https://developers.arcgis.com/javascript/3/jssamples/widget_locate.html
my code:
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<meta name="viewport" content="initial-scale=1, maximum-scale=1,user-scalable=no" />
<title>OpenStreetMap</title>
<link rel="stylesheet" href="https://js.arcgis.com/3.35/esri/css/esri.css">
<style>
html, body, #esri-map-container {
padding: 0px;
margin: 0px;
height: 100%;
width: 800px;
height: 500px;
}
#LocateButton {
position: absolute;
top: 95px;
left: 20px;
z-index: 50;
}
</style>
<script src="https://js.arcgis.com/3.35/"></script>
<script>
var map;
require([
"esri/map",
"esri/dijit/LocateButton",
"dojo/domReady!"
], function(Map, LocateButton)
{
map = new Map("map", {
center: [-56.049, 38.485],
zoom: 3,
basemap: "streets"
});
geoLocate = new LocateButton({
map: map
}, "LocateButton");
geoLocate.startup();
});
</script>
</head>
<body>
<div id="map" class="map">
<div id="LocateButton"></div>
</body>
</html>
So yeah, I don't know where to search really, if you can direct me or help me out figuring how am I supposed to do that.
You can get some information data about the location detected by using the 'locate' event.
In there you will find the coordinates of the location and much more. I personally tried to convert coordinates to address but there is not much ArcGIS support right now. If you find a way through Google's API maybe you will be able to finally get the city through the coordinates ArcGIS gives you.
geoLocate.on('locate', (data) => {
console.log(data);
});
You will find a working example of the event I mentioned above here.
I'm trying to learn how to use pdfMake. I'm trying to use open and print to generate or print the information respectively. But, when I click on the button which fires the event, a new tab opens for a second and vanishes.
The page which opens is displayed in history as blob:http://localhost:9999/93c1600e-3c64-42fe-8b44-fe6eeb995b5e
I'm not able to figure out the error. I'm following the official documentation of pdfMake.
Please help.
function print(){
window.event.preventDefault()
// this is just a simulation of the open event, replacing it with print produces the same result
var docDefinition = { content: {text:'This is an sample PDF printed with pdfMake',fontSize:15} };
pdfMake.createPdf(docDefinition).open();
}
<!DOCTYPE HMTL>
<html>
<head>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width,initial-scale=1.0" />
<script src='https://cdnjs.cloudflare.com/ajax/libs/pdfmake/0.1.27/pdfmake.min.js'></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/pdfmake/0.1.27/vfs_fonts.js"></script>
<script src="js/print.js"></script>
</head>
<body>
<main>
<button onclick="print()">Print Card</button>
</main>
</body>
</html>
Please check that any type of ad blocker in your browser is turned off and try again.
I found solution for printing in same window.
In your .html file put iframe
<iframe id="printPdf" name="printPdf"></iframe>
iframe needs style to hide himself for example (I do not know why, but if I define width and height on iframe, printing will not work):
#printPdf { position: fixed; top: 0px; left: 0px; display: block;
padding: 0px;border: 0px;margin: 0px;
visibility: hidden; opacity: 0;
}
Finally, just call:
if ('safari') {
pdfMake.createPdf(content).open({}, window.frames['printPdf']);
setTimeout(function() {
window.frames['printPdf'].focus();
window.frames['printPdf'].print();
}, 2000)
} else {
pdfMake.createPdf(content).print({}, window.frames['printPdf']);
}
Tested on Chrome v72, Firefox v65, Edge v18, Safari v12
for the open() it's not working even without ad blocker so i converted it to base64 then blob then fileURL
var docDefinition = getRWABELPDF(data);
var createPdf = pdfMake.createPdf(docDefinition);
var base64data = null;
createPdf.getBase64(function(encodedString) {
base64data = encodedString;
console.log(base64data );
var byteCharacters = atob(base64data);
var byteNumbers = new Array(byteCharacters.length);
for (var i = 0; i < byteCharacters.length; i++) {
byteNumbers[i] = byteCharacters.charCodeAt(i);
}
var byteArray = new Uint8Array(byteNumbers);
var file = new Blob([byteArray], { type: 'application/pdf;base64' });
var fileURL = URL.createObjectURL(file);
window.open(fileURL);
PDFMake has an open issue for this problem.
PDFMake creates URLs starting with blob: to print/open a generated PDF. The problem is that this pattern of URL is used by many sites to show undesired popups to users. Then EasyList listed this URL pattern and ad blockers started blocking it.
Therefore, as steffanjj suggested, disable your ad blocker and you should be able to print/open the generated PDF. I just wanted to explain in little more detail why this is happening.
This helped me for viewing directly in browser.
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>PDF Make</title>
<script src='js/pdfmake.min.js'></script>
<script src='js/vfs_fonts.js'></script>
<style>
#viewPdf { position: fixed; top: 0px; left: 0px; display: block; padding: 0px; border: 0px; margin: 0px; width: 100%; height: 100%; }
</style>
</head>
<body>
<iframe id="viewPdf" name="viewPdf"></iframe>
<script>
const docDefinition = {
pageMargins: [ 0, 0, 0, 0 ],
content: 'This is an sample PDF printed with pdfMake'
};
pdfMake.createPdf(docDefinition).open(window.frames['viewPdf']);
</script>
</body>
</html>
I am new to Javacript (very, very new) and I need to place a loading spinner on a site. We currently have a screensaver and once you tap the screen it takes a awhile to get to the necessary url. So, we wanted to place a spinner to make sure users would not continue to tap the screen.
I am using spin.js abd I am pretty sure I am doing something wrong as it is not showing up when I do a test.
Here is the code I am using:
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<meta name="viewport" content="user-scalable=no, width=device-width" />
<meta name="apple-mobile-web-app-capable" content="yes" />
<meta name="apple-mobile-web-app-status-bar-style" content="black" />
<title>THE TITLE</title>
<style type="text/css">
body {
background-color: #000;
margin-left: 0px;
margin-top: 0px;
margin-right: 0px;
margin-bottom: 0px;
width: 1024px;
overflow: hidden;
overflow-x: hidden;
overflow-y: hidden;
-webkit-user-select: none;
-webkit-text-size-adjust: none;
}
a,img,map,area {
-webkit-tap-highlight-color: rgba(0,0,0,0);
}
</style>
<script type="text/javascript" src="spin.js"></script>
<script type="text/javascript">
$(document).ready(function () {
var opts = {
lines: 13, // The number of lines to draw
length: 20, // The length of each line
width: 10, // The line thickness
radius: 30, // The radius of the inner circle
corners: 1, // Corner roundness (0..1)
rotate: 0, // The rotation offset
direction: 1, // 1: clockwise, -1: counterclockwise
color: '#000', // #rgb or #rrggbb or array of colors
speed: 1, // Rounds per second
trail: 60, // Afterglow percentage
shadow: false, // Whether to render a shadow
hwaccel: false, // Whether to use hardware acceleration
className: 'spinner', // The CSS class to assign to the spinner
zIndex: 2e9, // The z-index (defaults to 2000000000)
top: '50%', // Top position relative to parent
left: '50%' // Left position relative to parent
};
var target = document.getElementById('foo');
var spinner = new Spinner(opts).spin(target);
</script>
</script>
</head>
<body onLoad="timeout(7,goto,'screen3.html');">
<img src="screen2.jpg" width="1024" height="768" border="0">
<div id="spinner">
</div>
</body>
</html>
Any advice will be appreciated.
A few things are wrong with your code:
you have 2 closing <script/> tags after eachother (right before ), so that's a syntax error.
you have another syntax error. You're not closing jqueries document.ready function properly.
You're using a jQuery method but you're not including the jQuery library in your code.
You say color:'#000' in the spinner options, which means the spinner will be black (same as your background color so you will never see it).
The spinner works in its most simple form. See working example:
http://jsfiddle.net/wLkganhm/
If you're very new to javascript I suggest reading up on how to use the debugger so you can find the syntax errors for yourself :)
You have a few issues with your code as already pointed out.
I've put up a cleaned up version here http://jsbin.com/payuzeyopa.
Things to improve on/fix:
Try using a site like JSFiddle or JSBin to share/prototype your code with others
Keep your HTML, CSS and JavaScript files separate
Spot errors early by using tools built into the browser. For example, see http://discover-devtools.codeschool.com/ for an excellent starter.
Finally, read up on JavaScript and HTML :)
Good luck!
I'm creating a map in TileMill which shows the age of various buildings by color. I have 4 data layers (each with 50 years of building construction, so it can be toggled on/off) and a base layer.
Within TileMill I can see tooltips when I hover over the shapefiles. I've customized them so it shows the age of construction of the building the cursor is hovering over. However when I export to MBTiles to upload to MapBox for integration on my website, the hover functionality is gone, and there is no legend.
I have searched for hours for help on MapBox's website and API. I am not using Markers so I cannot use that as a solution (there are over 800,000 buildings). Is there any way to do this?
var map = L.mapbox.map('map', 'jacobs74.xoonovka', {
legendControl: {
// any of the valid control positions:
// http://leafletjs.com/reference.html#control-positions
position: 'bottomleft'
}, zoomControl: false
})
.setView([41.8928, -87.6491], 14),
markerLayer = L.mapbox.markerLayer().addTo(map);
map.gridControl.options.follow = true;
new L.Control.Zoom({ position: 'topright' }).addTo(map);
var gridLayer = L.mapbox.gridLayer('jacobs74.xoonovka');
map.addLayer(gridLayer);
map.addControl(L.mapbox.gridControl(gridLayer, {follow: true}));
L.control.layers({
}, {
'Thru 1899': L.mapbox.tileLayer('jacobs74.s37bpdgq'),
'1900-1949': L.mapbox.tileLayer('jacobs74.fi084ush'),
'1950-1999': L.mapbox.tileLayer('jacobs74.yh8prbfi'),
'2000-Now': L.mapbox.tileLayer('jacobs74.awsw2ji1')
}).addTo(map);
It's a bit unclear where your issue is. Please include a copy of your code. As for creating a tooltip for tile as well as marker layers. Just set the follow option to true map.gridControl
<!DOCTYPE html>
<html>
<head>
<meta charset=utf-8 />
<title>Movetip</title>
<meta name='viewport' content='width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no' />
<script src='//api.tiles.mapbox.com/mapbox.js/v1.5.2/mapbox.js'></script>
<link href='//api.tiles.mapbox.com/mapbox.js/v1.5.2/mapbox.css' rel='stylesheet' />
<style>
body { margin:0; padding:0; }
#map { position:absolute; top:0; bottom:0; width:100%; }
</style>
</head>
<body>
<div id='map'></div>
<script>
var map = L.mapbox.map('map', 'examples.map-8ced9urs');
map.gridControl.options.follow = true;
</script>
</body>
</html>