44 lines
1.0 KiB
JavaScript
44 lines
1.0 KiB
JavaScript
goog.require('ol.Map');
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goog.require('ol.RendererHints');
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goog.require('ol.View2D');
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goog.require('ol.layer.Tile');
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goog.require('ol.source.OSM');
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var osm = new ol.layer.Tile({
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source: new ol.source.OSM()
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});
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var map = new ol.Map({
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layers: [osm],
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renderer: ol.RendererHint.CANVAS,
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target: 'map',
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view: new ol.View2D({
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center: [0, 0],
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zoom: 2
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})
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});
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osm.on('precompose', function(event) {
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var ctx = event.getContext();
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var size = event.getFrameState().size;
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ctx.save();
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ctx.translate(size[0] / 2, size[1] / 2);
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ctx.scale(3, 3);
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ctx.translate(-75, -80);
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ctx.beginPath();
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ctx.moveTo(75, 40);
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ctx.bezierCurveTo(75, 37, 70, 25, 50, 25);
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ctx.bezierCurveTo(20, 25, 20, 62.5, 20, 62.5);
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ctx.bezierCurveTo(20, 80, 40, 102, 75, 120);
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ctx.bezierCurveTo(110, 102, 130, 80, 130, 62.5);
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ctx.bezierCurveTo(130, 62.5, 130, 25, 100, 25);
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ctx.bezierCurveTo(85, 25, 75, 37, 75, 40);
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ctx.clip();
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ctx.setTransform(1, 0, 0, 1, 0, 0);
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});
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osm.on('postcompose', function(event) {
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var ctx = event.getContext();
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ctx.restore();
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});
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