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May 10, 2019 16:47
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test case showing threebox rendering a tube
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mapboxgl.accessToken = 'pk.eyJ1IjoiYmVubmxpY2giLCJhIjoieUxHOHQyNCJ9.VLDDBTTdzeHKJvR5ABYaLA' | |
let tubeMesh; | |
let tubeMaterial; | |
let origin = [-122.2639955060099, 37.7994199370347, 1000]; | |
let map = new mapboxgl.Map({ | |
container: 'map', | |
style: 'mapbox://styles/mapbox/light-v9', | |
center: origin, | |
zoom: 12, | |
pitch: 50, | |
bearing: 350, | |
}); | |
map.on('style.load', function() { | |
console.log("adding layer"); | |
map.addLayer({ | |
id: 'tube_layer', | |
type: 'custom', | |
onAdd: async function(map, mbxContext){ | |
window.threebox = new Threebox(map, mbxContext); | |
const VERT_SHADER=` | |
varying vec2 texcoord; | |
void main() { | |
texcoord = vec2(uv); | |
gl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 ); | |
}`; | |
const FRAG_SHADER=` | |
precision highp float; | |
varying vec2 texcoord; | |
uniform float time; | |
void main() { | |
float timeOffset = time * 0.1 / 200.0; | |
float repeatVal = mod(texcoord.x + timeOffset, 0.1) * 10.0; | |
gl_FragColor = vec4(0.0, repeatVal, 0.5, 1); | |
}`; | |
const curve = new THREE.CurvePath(); | |
let coords = [ | |
[[0, 0, 0], [2000, 2000, 0]], | |
[[2000, 2000, 0], [2000, 3000, 1000]] | |
]; | |
for (let coordPair of coords) { | |
let [start, end] = coordPair; | |
curve.add(new THREE.LineCurve3( | |
new THREE.Vector3(start[0], start[1], start[2]), | |
new THREE.Vector3(end[0], end[1], end[2]) | |
)); | |
} | |
let geom = new THREE.TubeBufferGeometry(curve, 512, 500, 8, false); | |
tubeMaterial = new THREE.ShaderMaterial({ | |
uniforms: { | |
time: { value: 0 }, | |
}, | |
vertexShader: VERT_SHADER, | |
fragmentShader: FRAG_SHADER, | |
side: THREE.DoubleSide, | |
}); | |
tubeMesh = new THREE.Mesh(geom, tubeMaterial); | |
threebox.addAtCoordinate(tubeMesh, origin); | |
}, | |
render: function(gl, matrix){ | |
threebox.update(true); | |
} | |
}); | |
}); |
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