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| import Feature from 'ol/Feature.js';
import Map from 'ol/Map.js';
import Point from 'ol/geom/Point.js';
import TileJSON from 'ol/source/TileJSON.js';
import VectorSource from 'ol/source/Vector.js';
import View from 'ol/View.js';
import {Circle, Fill, Icon, Stroke, Style, Text} from 'ol/style.js';
import {Tile as TileLayer, Vector as VectorLayer} from 'ol/layer.js';
const iconFeature = new Feature({
geometry: new Point([0, 0]),
});
const iconStyle = new Style({
image: new Icon({
anchor: [0.5, 1],
src: 'data/world.png',
}),
text: new Text({
text: 'World\nText',
font: 'bold 30px Calibri,sans-serif',
fill: new Fill({
color: 'black',
}),
stroke: new Stroke({
color: 'white',
width: 2,
}),
}),
});
const pointStyle = new Style({
image: new Circle({
radius: 7,
fill: new Fill({
color: 'black',
}),
stroke: new Stroke({
color: 'white',
width: 2,
}),
}),
});
iconFeature.setStyle([pointStyle, iconStyle]);
const vectorSource = new VectorSource({
features: [iconFeature],
});
const vectorLayer = new VectorLayer({
source: vectorSource,
});
const rasterLayer = new TileLayer({
source: new TileJSON({
url: 'https://a.tiles.mapbox.com/v3/aj.1x1-degrees.json?secure=1',
crossOrigin: '',
}),
});
const map = new Map({
layers: [rasterLayer, vectorLayer],
target: 'map',
view: new View({
center: [0, 0],
zoom: 3,
}),
});
const textAlignments = ['left', 'center', 'right'];
const textBaselines = ['top', 'middle', 'bottom'];
const controls = {};
const controlIds = [
'rotation',
'rotateWithView',
'scaleX',
'scaleY',
'anchorX',
'anchorY',
'displacementX',
'displacementY',
'textRotation',
'textRotateWithView',
'textScaleX',
'textScaleY',
'textAlign',
'textBaseline',
'textOffsetX',
'textOffsetY',
];
controlIds.forEach(function (id) {
const control = document.getElementById(id);
const output = document.getElementById(id + 'Out');
function setOutput() {
const value = parseFloat(control.value);
if (control.type === 'checkbox') {
output.innerText = control.checked;
} else if (id === 'textAlign') {
output.innerText = textAlignments[value];
} else if (id === 'textBaseline') {
output.innerText = textBaselines[value];
} else {
output.innerText = control.step.startsWith('0.')
? value.toFixed(2)
: value;
}
}
control.addEventListener('input', function () {
setOutput();
updateStyle();
});
setOutput();
controls[id] = control;
});
function updateStyle() {
iconStyle
.getImage()
.setRotation(parseFloat(controls['rotation'].value) * Math.PI);
iconStyle.getImage().setRotateWithView(controls['rotateWithView'].checked);
iconStyle
.getImage()
.setScale([
parseFloat(controls['scaleX'].value),
parseFloat(controls['scaleY'].value),
]);
iconStyle
.getImage()
.setAnchor([
parseFloat(controls['anchorX'].value),
parseFloat(controls['anchorY'].value),
]);
iconStyle
.getImage()
.setDisplacement([
parseFloat(controls['displacementX'].value),
parseFloat(controls['displacementY'].value),
]);
iconStyle
.getText()
.setRotation(parseFloat(controls['textRotation'].value) * Math.PI);
iconStyle.getText().setRotateWithView(controls['textRotateWithView'].checked);
iconStyle
.getText()
.setScale([
parseFloat(controls['textScaleX'].value),
parseFloat(controls['textScaleY'].value),
]);
iconStyle
.getText()
.setTextAlign(textAlignments[parseFloat(controls['textAlign'].value)]);
iconStyle
.getText()
.setTextBaseline(textBaselines[parseFloat(controls['textBaseline'].value)]);
iconStyle.getText().setOffsetX(parseFloat(controls['textOffsetX'].value));
iconStyle.getText().setOffsetY(parseFloat(controls['textOffsetY'].value));
iconFeature.changed();
}
updateStyle();
map.on('pointermove', function (e) {
const hit = map.hasFeatureAtPixel(e.pixel);
map.getTargetElement().style.cursor = hit ? 'pointer' : '';
});
|
)
