view.addLayer refresh the map #1082
Comments
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Having this issue only with ColorLayer. |
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Here is an example base on the globe_vector.html example to show the effect i'm talking about. When you add/remove a layer, the whole texture freeze before being rerendered. <html>
<head>
<title>Itowns - Test add/remove layer</title>
<style type="text/css">
.buttons {
background-image: linear-gradient(rgba(80, 80, 80,0.95), rgba(60, 60, 60,0.95));
box-shadow: -1px 2px 5px 1px rgba(0, 0, 0, 0.5);
margin-top: 20px;
margin-left: 20px;
padding: 10px;
right: 0;
position: absolute;
z-index: 1000;
color: #CECECE;
font-family: 'Open Sans', sans-serif;
font-size: 14px;
line-height: 18px;
text-align: left;
}
</style>
<meta charset="UTF-8">
<link rel="stylesheet" type="text/css" href="css/example.css">
<link rel="stylesheet" type="text/css" href="css/loading_screen.css">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<script src="js/GUI/dat.gui/dat.gui.min.js"></script>
</head>
<body>
<div class="buttons">
<button onclick="addLayer()">add Layer</button><button onclick="removeLayer()">remove layer</button>
</div>
<div id="viewerDiv" class="viewer"></div>
<script src="../dist/itowns.js"></script>
<script type="text/javascript">
// # Simple Globe viewer
/* global itowns, setupLoadingScreen, GuiTools, ToolTip */
// Define initial camera position
var positionOnGlobe = { longitude: 1, latitude: 43, altitude: 150000 };
// `viewerDiv` will contain iTowns' rendering area (`<canvas>`)
var viewerDiv = document.getElementById('viewerDiv');
// Instanciate iTowns GlobeView*
var view = new itowns.GlobeView(viewerDiv, positionOnGlobe);
// Add one imagery layer to the scene
// This layer is defined in a json file but it could be defined as a plain js
// object. See Layer* for more info.
itowns.Fetcher.json('./layers/JSONLayers/Ortho.json').then(function _(config) {
config.source = new itowns.WMTSSource(config.source);
var layer = new itowns.ColorLayer('Ortho', config);
view.addLayer(layer).then(function _() {
itowns.ColorLayersOrdering.moveLayerToIndex(view, 'Ortho', 0);
});
});
// Add two elevation layers.
// These will deform iTowns globe geometry to represent terrain elevation.
function addElevationLayerFromConfig(config) {
config.source = new itowns.WMTSSource(config.source);
var layer = new itowns.ElevationLayer(config.id, config);
view.addLayer(layer);
}
itowns.Fetcher.json('./layers/JSONLayers/WORLD_DTM.json').then(addElevationLayerFromConfig);
itowns.Fetcher.json('./layers/JSONLayers/IGN_MNT_HIGHRES.json').then(addElevationLayerFromConfig);
var promises = [];
var ariegeSource = null;
// Convert by iTowns
promises.push(itowns.Fetcher.json('https://raw.githubusercontent.com/gregoiredavid/france-geojson/master/departements/09-ariege/departement-09-ariege.geojson')
.then(function _(geojson) {
return itowns.GeoJsonParser.parse(geojson, {
buildExtent: true,
crsIn: 'EPSG:4326',
crsOut: view.tileLayer.extent.crs(),
mergeFeatures: true,
withNormal: false,
withAltitude: false,
});
}).then(function _(parsedData) {
ariegeSource = new itowns.FileSource({
parsedData,
});
addLayer();
}));
function addLayer(){
var ariegeLayer = new itowns.ColorLayer('ariege', {
name: 'ariege',
transparent: true,
style: {
fill: 'orange',
fillOpacity: 0.5,
stroke: 'white',
},
source: ariegeSource,
});
view.addLayer(ariegeLayer);
}
function removeLayer(){
view.removeLayer('ariege')
}
</script>
</body>
</html>
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Hello, I suspect that this only happens when using a |
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Hello, thank you for answering. Yes I spotted this bug only using a |
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Hello @moutz, thanks for your feedback on iTowns.
does the behaviour you describe is the one shown bellow ?
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@zarov I also have this issue with colorlayer adding filesource causing all tiles to refresh. Have you resolved it？ |
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Duplicated in #2190. |
Hello,
I have some button in an app that launch multiple "addLayer" and "removeLayer". But each time I use this function, it looks like the whole map is being rerendered, is it a normal behavior ?
I think I have a similar problem on init, I wait for the event GLOBE_VIEW_EVENTS.GLOBE_INITIALIZED, then I call a view.addLayer(....) function, but the layer is not showing. If i do an action on the map (zoom or moving using mouse), this will rerendered the map and the layer is showing.
Can you tell me what is the best pratice to add/remove layer without rerendered the whole view ?
Thank you in advance.
Mz
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