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Runtime error
File size: 5,589 Bytes
c43e1bf | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 | <!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width,initial-scale=1">
<title>3DGS Viewer</title>
<style>
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html, body { width: 100%; height: 100%; overflow: hidden;
background: radial-gradient(ellipse at 50% 60%, #1a2035 0%, #080b12 100%); }
canvas { display: block; }
#hud {
position: fixed; top: 12px; left: 16px;
color: #94a3b8; font: 12px/1.5 system-ui, sans-serif;
pointer-events: none; user-select: none;
}
#loading {
position: fixed; inset: 0;
display: flex; flex-direction: column;
align-items: center; justify-content: center;
color: #94a3b8; font: 14px system-ui, sans-serif;
gap: 12px;
}
#spinner {
width: 36px; height: 36px;
border: 3px solid #334155;
border-top-color: #60a5fa;
border-radius: 50%;
animation: spin 0.9s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
#error {
display: none;
position: fixed; inset: 0;
align-items: center; justify-content: center;
color: #f87171; font: 13px system-ui, sans-serif;
padding: 32px; text-align: center; white-space: pre-wrap;
}
</style>
</head>
<body>
<div id="loading">
<div id="spinner"></div>
<div id="loading-label">Loading splat…</div>
</div>
<div id="error"></div>
<div id="hud">drag to orbit · scroll to zoom · right-drag to pan</div>
<script type="importmap">
{
"imports": {
"three": "https://cdnjs.cloudflare.com/ajax/libs/three.js/0.180.0/three.module.js",
"three/addons/": "https://unpkg.com/three@0.180.0/examples/jsm/",
"@sparkjsdev/spark": "https://unpkg.com/@sparkjsdev/spark@2.0.0/dist/spark.module.js"
}
}
</script>
<script type="module">
import * as THREE from "three";
import { OrbitControls } from "three/addons/controls/OrbitControls.js";
import { SparkRenderer, SplatMesh } from "@sparkjsdev/spark";
const params = new URLSearchParams(location.search);
const plyURL = params.get("ply");
const loadingEl = document.getElementById("loading");
const loadLabel = document.getElementById("loading-label");
const errorEl = document.getElementById("error");
function showError(msg) {
loadingEl.style.display = "none";
errorEl.style.display = "flex";
errorEl.textContent = msg;
}
if (!plyURL) {
showError("No ?ply= parameter provided.");
} else {
init(plyURL);
}
function init(url) {
const scene = new THREE.Scene();
const camera = new THREE.PerspectiveCamera(45, window.innerWidth / window.innerHeight, 0.01, 1000);
camera.position.set(0, 0.3, 1.8);
const renderer = new THREE.WebGLRenderer({ antialias: false });
renderer.setPixelRatio(window.devicePixelRatio);
renderer.setSize(window.innerWidth, window.innerHeight);
document.body.appendChild(renderer.domElement);
const spark = new SparkRenderer({ renderer });
scene.add(spark);
const controls = new OrbitControls(camera, renderer.domElement);
controls.enableDamping = true;
controls.dampingFactor = 0.07;
controls.minDistance = 0.2;
controls.maxDistance = 50;
controls.target.set(0, 0, 0);
const splat = new SplatMesh({ url });
// DEG saves PLYs with -Y up and the front of the object facing roughly
// along the horizontal axis. Re-orient for Three.js (+Y up, camera on
// +Z looking toward -Z): a Group lets us apply a yaw first (to bring the
// front-facing side to +Z) and then flip 180° around X to put up on +Y.
const splatRoot = new THREE.Group();
splatRoot.add(splat);
splat.rotation.y = Math.PI / 2; // yaw the model so its front faces the camera
splatRoot.rotation.x = Math.PI; // flip Y/Z so it stands upright
scene.add(splatRoot);
let framed = false;
function tryFrame() {
if (framed) return;
const box = new THREE.Box3().setFromObject(splatRoot);
if (box.isEmpty() || !isFinite(box.min.x)) return;
framed = true;
// const center = new THREE.Vector3();
// const size = new THREE.Vector3();
// box.getCenter(center);
// box.getSize(size);
// console.log(size);
// const maxDim = Math.max(size.x, size.y, size.z);
// // With a 45° FOV, half-fov tan ≈ 0.414, so the minimum distance to fit
// // a sphere of diameter `maxDim` in view is maxDim / (2*0.414) ≈ 1.21*maxDim.
// // Use a small margin (1.15) so the object nearly fills the viewport.
// const dist = maxDim * 1.15;
// camera.position.copy(center).add(new THREE.Vector3(0, maxDim * 0.15, dist));
// controls.target.copy(center);
// controls.update();
loadingEl.style.display = "none";
}
fetch(url, { method: "HEAD" }).then(r => {
if (!r.ok) throw new Error(`HTTP ${r.status} ${r.statusText}`);
const len = r.headers.get("content-length");
if (len) loadLabel.textContent = `Loading splat (${(len / 1024 / 1024).toFixed(1)} MB)…`;
}).catch(e => showError("Fetch failed: " + e.message));
let checkFrames = 0;
function checkLoaded() {
checkFrames++;
if (checkFrames < 5) return;
tryFrame();
}
window.addEventListener("resize", () => {
camera.aspect = window.innerWidth / window.innerHeight;
camera.updateProjectionMatrix();
renderer.setSize(window.innerWidth, window.innerHeight);
});
renderer.setAnimationLoop(() => {
controls.update();
renderer.render(scene, camera);
checkLoaded();
});
// Fallback: hide loading after 4s regardless of bbox-readiness.
setTimeout(() => { loadingEl.style.display = "none"; }, 4000);
}
</script>
</body>
</html>
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