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updatealtitude-terrain.html
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updatealtitude-terrain.html
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<!DOCTYPE html>
<html>
<head>
<title>geometry update altitude by terrain</title>
<style type="text/css">
html,
body {
width: 100%;
height: 100%;
margin: 0px;
}
.container {
width: 100%;
height: 100%;
}
</style>
<link rel="stylesheet" href="https://maptalks.com/api/maptalks.css" />
<script type='text/javascript' src='https://maptalks.com/api/maptalks.min.js'></script>
<script type="text/javascript" src="https://maptalks.com/api/maptalks-gl-layers.js"></script>
<script type="text/javascript" src="https://maptalks.com/api/lil-gui.min.js"></script>
<script type='text/javascript' src='./../assets/lib/three.min.js'></script>
<script type='text/javascript' src='./../assets/lib/maptalks.three.min.js'></script>
</head>
<body>
<div id="map" class="container"></div>
<script>
const map = new maptalks.Map("map", {
center: [119.40307165, 30.37671886, 436],
zoom: 11,
pitch: 60,
// cameraInfiniteFar: true,
heightFactor: 1.2,
zoomControl: true
});
map.on('click', e => {
console.log(e.coordinate.toArray());
// const result = group.queryTerrain(e.coordinate);
// console.log(result);
// e.coordinate.z = result[0];
// const point = new maptalks.Marker(e.coordinate).addTo(layer);
});
const coordinates = [
[119.26945017383241, 30.376871910976178]
, [119.41899273004572, 30.377746042120833]
, [119.51608471650138, 30.37726503747328]
, [119.46354801648795, 30.31694687527127]
, [119.60562937352347, 30.37820924055947]
, [119.59045825643739, 30.430436461050107]
, [119.584406756833, 30.487931288984754]
, [119.51453485707066, 30.49039516064832]
, [119.45440953161744, 30.48646614394201]
, [119.69247157405653, 30.486815730590678]
, [119.80953084691987, 30.472457196921]
, [119.89535951684763, 30.47496435491533]
, [119.84708685095575, 30.36586547405281]
, [119.67054883716764, 30.303609976340255]
, [119.65234867735501, 30.363784873871822]
, [119.54423459602981, 30.480024325865287]
, [119.47395594040563, 30.56338903320065]
, [119.39707374359091, 30.53546677150925]
, [119.57396685725621, 30.574315977713553]
, [119.6401686202828, 30.569305689523247]
];
const data = coordinates.map(c => {
return {
id: maptalks.Util.GUID(),
coordinates: c
}
});
const sceneConfig = {
postProcess: {
enable: true,
antialias: {
enable: true,
},
},
};
// the ThreeLayer to draw buildings
var threeLayer = new maptalks.ThreeLayer('t', {
identifyCountOnEvent: 1,
// forceRenderOnMoving: true,
// forceRenderOnRotating: true
});
threeLayer.prepareToDraw = function (gl, scene, camera) {
var light = new THREE.DirectionalLight(0xffffff);
light.position.set(0, -10, 10).normalize();
scene.add(light);
scene.add(new THREE.AmbientLight('#fff', 0.3));
addBars();
threeLayer.inited = true;
};
const barHeight = 1000;
function addBars() {
const material = new THREE.MeshLambertMaterial({ color: 'red' });
const bars = data.map(d => {
const bar = threeLayer.toBar(d.coordinates, { height: barHeight, radius: 100, topColor: '#fff' }, material);
bar.setId(d.id);
return bar;
})
threeLayer.addMesh(bars);
}
function findBar(id) {
const bars = threeLayer.getBaseObjects();
for (let i = 0, len = bars.length; i < len; i++) {
const bar = bars[i];
if (bar.getId() === id) {
return bar;
}
}
}
const pointLayer = new maptalks.VectorLayer('layer1', {
enableAltitude: true,
zIndex: 1
}).addTo(map);
const points = data.map(d => {
const { id, coordinates } = d;
const point = new maptalks.Marker(coordinates, {
});
point.setId(id);
return point;
});
pointLayer.addGeometry(points);
const skinLayers = [
// baseLayer,
threeLayer,
// lineLayer,
// pointLayer
];
const token = 'xxxxxxxxxxxxx';
const terrain = {
type: 'mapbox',
tileSize: 256,
// maxAvailableZoom: 14,
// zoomOffset: -1,
// spatialReference: 'preset-vt-3857',
requireSkuToken: false,
urlTemplate: `https://{s}.tiles.mapbox.com/v4/mapbox.terrain-rgb/{z}/{x}/{y}.pngraw?access_token=${token}`,
subdomains: ['a', 'b', 'c', 'd'],
shader: "lit",
material: {
baseColorFactor: [1, 1, 1, 1],
outputSRGB: 1,
roughnessFactor: 0.69,
metallicFactor: 0
}
};
const group = new maptalks.GroupGLLayer('group', skinLayers, {
terrain
});
group.addTo(map);
let needUpdateGeos = [];
group.getTerrainLayer().on('tileload', e => {
const zoom = map.getZoom();
if (zoom < 10) {
return;
}
//计算当前的瓦片内的点，加入到更新队列
const { res, extent2d } = e.tile;
const points = pointLayer.getGeometries();
points.forEach(point => {
const coordinate = point.getCoordinates();
const glpoint = map.coordinateToPointAtRes(coordinate, res);
if (extent2d.contains(glpoint)) {
const height = group.queryTerrain(coordinate);
if (height && Array.isArray(height)) {
needUpdateGeos.push({
geometry: point,
height: height[0]
})
}
}
});
})
const cache = new Map();
function animtion() {
// layer animation support Skipping frames
threeLayer._needsUpdate = !threeLayer._needsUpdate;
if (threeLayer._needsUpdate) {
threeLayer.redraw();
}
if (needUpdateGeos.length && threeLayer.inited) {
for (let len = needUpdateGeos.length, i = len - 1; i >= 0; i--) {
const data = needUpdateGeos[i];
const { geometry, height } = data;
if (cache.has(geometry)) {
continue;
}
const altitude = height;
geometry.setAltitude(altitude + barHeight);
const id = geometry.getId();
const bar = findBar(id);
if (bar) {
bar.setAltitude(altitude);
}
cache.set(geometry, 1);
}
cache.clear();
needUpdateGeos = [];
}
requestAnimationFrame(animtion);
}
animtion();
</script>
</body>
</html>