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300 lines
7.6 KiB
300 lines
7.6 KiB
function init() {
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const container = document.getElementById('globe')
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const canvas = container.getElementsByTagName('canvas')[0]
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const width = 1000
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const height = 800
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const globeRadius = 200
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const globeSegments = 64
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const globeWidth = 4098 / 2
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const globeHeight = 1968 / 2
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const traceSteps = 10;
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const groups = {
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globe: null,
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globePoints: null,
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tracePoints: null,
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traceLines: null,
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}
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let data, scene, renderer, globe
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const camera = {
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object: null,
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orbitControls: null,
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angles: {
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current: {
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azimuthal: null,
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polar: null,
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},
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target: {
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azimuthal: null,
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polar: null,
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},
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},
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transition: {
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current: 0,
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target: 30,
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},
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}
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function setup() {
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scene = new THREE.Scene()
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camera.object = new THREE.PerspectiveCamera(45, width / height, 1, 4000)
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camera.object.position.z = -400
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renderer = new THREE.WebGLRenderer({
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canvas: canvas,
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antialias: true,
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opacity: 1,
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})
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renderer.setSize(width, height)
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setupGlobe()
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setupOrbitControls()
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render()
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}
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setup()
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function setupGlobe() {
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const canvasSize = 128
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const textureCanvas = document.createElement('canvas')
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textureCanvas.width = canvasSize
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textureCanvas.height = canvasSize
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const canvasContext = textureCanvas.getContext('2d')
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canvasContext.rect(0, 0, canvasSize, canvasSize)
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const texture = new THREE.Texture(textureCanvas)
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const geometry = new THREE.SphereGeometry(
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globeRadius,
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globeSegments,
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globeSegments
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)
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const material = new THREE.MeshBasicMaterial({
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map: texture,
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transparent: true,
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opacity: 0.5,
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})
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globe = new THREE.Mesh(geometry, material)
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groups.globe = globe
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groups.globe.name = 'Globe'
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scene.add(groups.globe)
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addPoints()
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}
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function addPoints() {
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const mergedGeometry = new THREE.Geometry()
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const pingGeometry = new THREE.SphereGeometry(0.5, 5, 5)
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const material = new THREE.MeshBasicMaterial({
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color: '#626177',
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})
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for (let point of pointdata.points) {
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const pos = convertFlatCoordsToSphereCoords(point.x, point.y)
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if (pos.x && pos.y && pos.z) {
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pingGeometry.translate(pos.x, pos.y, pos.z)
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mergedGeometry.merge(pingGeometry)
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pingGeometry.translate(-pos.x, -pos.y, -pos.z)
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}
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}
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const total = new THREE.Mesh(mergedGeometry, material)
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groups.globePoints = total
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groups.globePoints.name = 'Globe Points'
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scene.add(groups.globePoints)
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}
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function addTracePoints(tracepoints) {
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console.log(tracepoints);
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const mergedGeometry = new THREE.Geometry()
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const pingGeometry = new THREE.SphereGeometry(1.9, 5, 5)
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const material = new THREE.MeshBasicMaterial({
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color: '#FF0000',
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})
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for (let point of tracepoints.points) {
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const pos = convertLatLngToSphereCoords(point.x, point.y)
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if (pos.x && pos.y && pos.z) {
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pingGeometry.translate(pos.x, pos.y, pos.z)
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mergedGeometry.merge(pingGeometry)
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pingGeometry.translate(-pos.x, -pos.y, -pos.z)
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}
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}
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const total = new THREE.Mesh(mergedGeometry, material)
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groups.tracePoints = total
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groups.tracePoints.name = 'Trace Points'
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scene.add(groups.tracePoints)
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groups.tracePoints.rotation.y = groups.globePoints.rotation.y - 0.05
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//drawTraceLines(tracepoints);
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}
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/*
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function calculateLine(a, b) {
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var line = [];
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if (a < b) {
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var step = (a - b) / (traceSteps - 1);
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} else {
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var step = (b - a) / (traceSteps - 1);
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}
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var k;
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for (k = 0; k < traceSteps ; k++) {
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line.push(a + (step * k));
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}
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return line;
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}
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function drawTraceLines(tracepoints) {
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const mergedGeometry = new THREE.Geometry()
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const pingGeometry = new THREE.SphereGeometry(1.9, 5, 5)
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const material = new THREE.MeshBasicMaterial({
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color: '#FF4c4c',
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})
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var i;
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for (i = 0; i < tracepoints.points.length; i++) {
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if (typeof tracepoints.points[i+1] === 'undefined') {
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break;
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}
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var x1 = tracepoints.points[i].x;
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var x2 = tracepoints.points[i+1].x;
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xarray = calculateLine(x1, x2);
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var y1 = tracepoints.points[i].y;
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var y2 = tracepoints.points[i+1].y;
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yarray = calculateLine(y1, y2);
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var j;
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for (j = 0; j < xarray.length; j++) {
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const pos = convertLatLngToSphereCoords(xarray[j], yarray[j])
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if (pos.x && pos.y && pos.z) {
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pingGeometry.translate(pos.x, pos.y, pos.z)
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mergedGeometry.merge(pingGeometry)
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pingGeometry.translate(-pos.x, -pos.y, -pos.z)
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}
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}
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}
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const total = new THREE.Mesh(mergedGeometry, material)
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groups.traceLines = total
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groups.traceLines.name = 'Trace Lines'
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scene.add(groups.traceLines)
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groups.traceLines.rotation.y = groups.globePoints.rotation.y - 0.05
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}
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*/
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init.addTracePoints = addTracePoints;
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function convertLatLngToSphereCoords(latitude, longitude) {
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const phi = (latitude * Math.PI) / 180
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const theta = ((longitude - 180) * Math.PI) / 180
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const x = -(globeRadius + -1) * Math.cos(phi) * Math.cos(theta)
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const y = (globeRadius + -1) * Math.sin(phi)
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const z = (globeRadius + -1) * Math.cos(phi) * Math.sin(theta)
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return new THREE.Vector3(x, y, z)
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}
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function convertFlatCoordsToSphereCoords(x, y) {
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let latitude = ((x - globeWidth) / globeWidth) * -180
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let longitude = ((y - globeHeight) / globeHeight) * -90
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latitude = (latitude * Math.PI) / 180 //(latitude / 180) * Math.PI
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longitude = (longitude * Math.PI) / 180 //(longitude / 180) * Math.PI
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const radius = Math.cos(longitude) * globeRadius
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const targetX = Math.cos(latitude) * radius
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const targetY = Math.sin(longitude) * globeRadius
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const targetZ = Math.sin(latitude) * radius
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return {
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x: targetX,
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y: targetY,
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z: targetZ,
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}
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}
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function convertLatLngToFlatCoords(latitude, longitude) {
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const x = Math.round((longitude + 180) * (globeWidth / 360)) * 2
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const y = Math.round((-1 * latitude + 90) * (globeHeight / 180)) * 2
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return { x, y }
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}
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function getProjectedPosition(
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width,
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height,
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position,
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contentWidth,
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contentHeight
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) {
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position = position.clone()
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var projected = position.project(camera.object)
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return {
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x: projected.x * width + width - contentWidth / 2,
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y: -(projected.y * height) + height - contentHeight - 10, // -10 for a small offset
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}
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}
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function returnCameraAngles(x, y) {
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let targetAzimuthalAngle = ((x - globeWidth) / globeWidth) * Math.PI
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targetAzimuthalAngle = targetAzimuthalAngle + Math.PI / 2
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targetAzimuthalAngle += 0.3
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let targetPolarAngle = (y / (globeHeight * 2)) * Math.PI
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targetPolarAngle += 0.1 // Add a small vertical offset
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return {
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azimuthal: targetAzimuthalAngle,
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polar: targetPolarAngle,
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}
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}
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function convertLatLngToSphereCoords(latitude, longitude) {
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const phi = (latitude * Math.PI) / 180
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const theta = ((longitude - 180) * Math.PI) / 180
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const x = -(globeRadius + -1) * Math.cos(phi) * Math.cos(theta)
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const y = (globeRadius + -1) * Math.sin(phi)
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const z = (globeRadius + -1) * Math.cos(phi) * Math.sin(theta)
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return new THREE.Vector3(x, y, z)
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}
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function easeInOutCubic(t) {
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return t < 0.5 ? 4 * t * t * t : (t - 1) * (2 * t - 2) * (2 * t - 2) + 1
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}
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function getRandomNumberBetween(min, max) {
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return Math.floor(Math.random() * (max - min + 1) + min)
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}
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function setupOrbitControls() {
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camera.orbitControls = new THREE.OrbitControls(camera.object, canvas)
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camera.orbitControls.enableKeys = false
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camera.orbitControls.enablePan = false
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camera.orbitControls.enableZoom = false
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camera.orbitControls.enableDamping = false
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camera.orbitControls.enableRotate = false
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camera.object.position.z = -550
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camera.orbitControls.update()
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}
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function render() {
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renderer.render(scene, camera.object)
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requestAnimationFrame(render)
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//animate()
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groups.globePoints.rotation.y += 0.01
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if (groups.tracePoints !== null) {
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groups.tracePoints.rotation.y += 0.01
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}
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/*
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if (groups.traceLines !== null) {
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groups.traceLines.rotation.y += 0.01
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}
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*/
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}
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}
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