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<!doctype html>
<html>
<head>
<title>CV Loader</title>
<style>
body {
margin: 0;
}
canvas {
position: absolute;
top: 0;
bottom: 0;
left: 0;
right: 0;
outline: none;
}
</style>
</head>
<body>
<script src="./pako.js"></script>
<script src="./pako_inflate.js"></script>
<script type=module>
import * as THREE from 'https://lib.webaverse.com/three.js';
import {GLTFLoader} from 'https://lib.webaverse.com/GLTFLoader.js';
import {VOXLoader} from 'https://lib.webaverse.com/VOXLoader.js';
import {OrbitControls} from 'https://lib.webaverse.com/OrbitControls.js';
// import {getBasisTransform, axesToAsciiImage, stringToAxes} from './basis.js';
// const inversionMatrix = new THREE.Matrix4();
// const unityTransform = getBasisTransform('-X+Y+Z', '+X+Y+Z', inversionMatrix);
function convertDataURIToBinary(base64) {
var raw = window.atob(base64);
var rawLength = raw.length;
var array = new Uint8Array(new ArrayBuffer(rawLength));
for (let i = 0; i < rawLength; i++) {
array[i] = raw.charCodeAt(i);
}
return array;
}
const _getParcel = (x, z, parcels) => parcels.find(parcel => {
return x >= parcel.x1 && x < parcel.x2 && z >= parcel.z1 && z < parcel.z2;
});
const _getContent = async (id, hash) => {
const res = await fetch(`https://https-js-cryptovoxels-com.proxy.exokit.org/grid/parcels/${id}/at/${hash}`);
const j = await res.json();
const {parcel} = j;
return parcel;
};
const _getTextureMaterial = u => {
const img = new Image();
img.onload = () => {
texture.needsUpdate = true;
};
img.onerror = err => {
console.warn(err);
};
img.crossOrigin = 'Anonymous';
img.src = u;
const texture = new THREE.Texture(img);
const material = new THREE.MeshBasicMaterial({
map: texture,
side: THREE.DoubleSide,
// transparent: true,
});
material.polygonOffset = true;
material.polygonOffsetFactor = -1.0;
material.polygonOffsetUnits = -4.0;
return material;
};
const _getTextureMaterialCached = (() => {
const cache = {};
return u => {
let entry = cache[u];
if (!entry) {
entry = _getTextureMaterial(u);
cache[u] = entry;
}
return entry;
};
})();
const zoom = 8;
const tileRange = 4;
const centerTile = 128;
const tilePixelWidth = 256;
const numTiles = tileRange*2;
const mapSize = 1000*2*(1 + 1/numTiles);
// const tileVoxelWidth = mapSize/4/numTiles;
const _loadVox = async u => {
let o = await new Promise((accept, reject) => {
new VOXLoader().load(u, accept, function onprogress() {}, reject);
});
const {geometry} = o;
const positions = geometry.attributes.position.array;
const normals = geometry.attributes.normal.array;
// const indices = geometry.index.array;
for (let i = 0; i < positions.length; i += 3) {
positions[i] = -positions[i];
normals[i] *= -1;
normals[i+1] *= -1;
normals[i+2] *= -1;
}
const indices = new Uint32Array(positions.length/3);
for (let i = 0; i < indices.length; i += 3) {
indices[i] = i;
indices[i+1] = i+2;
indices[i+2] = i+1;
}
geometry.setIndex(new THREE.BufferAttribute(indices, 1));
return o;
};
const _loadVoxCached = (() => {
const cache = {};
return async u => {
let entry = cache[u];
if (!entry) {
entry = await _loadVox(u);
cache[u] = entry;
}
return entry.clone();
};
})();
function GetVoxel(field, width, height, depth, x, y, z) {
if (x < 0 || y < 0 || z < 0 || x >= width * 2 || y >= height * 2 || z >= depth * 2)
{
return 0;
}
else
{
const index = z + y*(depth*2) + x*(depth*2)*(height*2);
return field[index];
}
}
function AddUvs(index, transparent, uvs, uvIndex)
{
if (transparent)
{
uvs[uvIndex++] = 0;
uvs[uvIndex++] = 0;
uvs[uvIndex++] = 1;
uvs[uvIndex++] = 0;
uvs[uvIndex++] = 0;
uvs[uvIndex++] = 1;
uvs[uvIndex++] = 1;
uvs[uvIndex++] = 1;
return uvIndex;
}
const s = 1.0 / 16 / 128 * 128;
// long textureIndex = index - (1 << 15);
const textureIndex = index % 16;
// const textureIndex = index & 15;
// if (textureIndex >= 32) {
// // inverted
// textureIndex = (textureIndex % 32) * 2 + 1
// } else {
// textureIndex = (textureIndex % 32) * 2
// }
let x = 1.0 / 4 * ((textureIndex % 4) + 0.5);
let y = 1.0 / 4 * (Math.floor(textureIndex / 4.0) + 0.5);
y = 1.0 - y;
uvs[uvIndex++] = x - s;
uvs[uvIndex++] = y - s;
uvs[uvIndex++] = x + s;
uvs[uvIndex++] = y - s;
uvs[uvIndex++] = x - s;
uvs[uvIndex++] = y + s;
uvs[uvIndex++] = x + s;
uvs[uvIndex++] = y + s;
return uvIndex;
}
const _colorTable = [
new THREE.Color(0xffffff),
new THREE.Color(0x888888),
new THREE.Color(0x000000),
new THREE.Color(0xff71ce),
new THREE.Color(0x01cdfe),
new THREE.Color(0x05ffa1),
new THREE.Color(0xb967ff),
new THREE.Color(0xfffb96),
];
const white = new THREE.Color(0xFFFFFF);
const red = new THREE.Color(0xFF0000);
function UIntToColor(color)
{
//string binary = Convert.ToString(color, 2);
//binary = binary.Remove(binary.Length - 2 - 1, 2);
//uint newValue = Convert.ToUInt32(binary, 2);
//uint c = color;// - (byte) color;// (byte)(color & ~(1 << 4));
// string debug = "";
if (color >= 32768)
{
color -= 32768;
// debug += "big ";
}
if (color === 0)
{
return white;
}
if (color > 32)
{
//uint colorIndex = (uint)Mathf.Floor(color / 32.0f);
//Debug.Log(color-32);
const index = Math.floor(color / 32);
if (index >= _colorTable.length) {
return red;
}
return _colorTable[index];
}
return white;
}
function IsTransparent(index) {
return index <= 2;
}
function IsGeometry(index, transparent) {
return transparent ? index == 2 : index > 2;
}
function GenerateField(field, width, height, depth, transparent) {
const newVertices = new Float32Array(1024 * 1024);
const newUV = new Float32Array(1024 * 1024);
const indices = new Uint32Array(1024 * 1024);
const newColor = new Float32Array(1024 * 1024);
let vertexIndex = 0;
let uvIndex = 0;
let indexIndex = 0;
let colorIndex = 0;
for (let x = -1; x < width * 2; x++)
{
for (let y = -1; y < height * 2; y++)
{
for (let z = -1; z < depth * 2; z++)
{
const i = GetVoxel(field, width, height, depth, x, y, z);
const nX = GetVoxel(field, width, height, depth, x + 1, y, z);
const nY = GetVoxel(field, width, height, depth, x, y + 1, z);
const nZ = GetVoxel(field, width, height, depth, x, y, z + 1);
if (IsGeometry(i, transparent) !== IsGeometry(nX, transparent))
{
const v = vertexIndex/3;
/* newVertices.Add(new Vector3(x + 1, y + 1, z));
newVertices.Add(new Vector3(x + 1, y + 1, z + 1));
newVertices.Add(new Vector3(x + 1, y, z));
newVertices.Add(new Vector3(x + 1, y, z + 1)); */
newVertices[vertexIndex++] = x + 1;
newVertices[vertexIndex++] = y + 1;
newVertices[vertexIndex++] = z;
newVertices[vertexIndex++] = x + 1;
newVertices[vertexIndex++] = y + 1;
newVertices[vertexIndex++] = z + 1;
newVertices[vertexIndex++] = x + 1;
newVertices[vertexIndex++] = y;
newVertices[vertexIndex++] = z;
newVertices[vertexIndex++] = x + 1;
newVertices[vertexIndex++] = y;
newVertices[vertexIndex++] = z + 1;
if (i > nX)
{
indices[indexIndex++] = v + 0;
indices[indexIndex++] = v + 1;
indices[indexIndex++] = v + 2;
indices[indexIndex++] = v + 1;
indices[indexIndex++] = v + 3;
indices[indexIndex++] = v + 2;
uvIndex = AddUvs(i, transparent, newUV, uvIndex);
const c = UIntToColor(i);
c.toArray(newColor, colorIndex);
colorIndex += 3;
c.toArray(newColor, colorIndex);
colorIndex += 3;
c.toArray(newColor, colorIndex);
colorIndex += 3;
c.toArray(newColor, colorIndex);
colorIndex += 3;
}
else
{
indices[indexIndex++] = v + 2;
indices[indexIndex++] = v + 1;
indices[indexIndex++] = v + 0;
indices[indexIndex++] = v + 2;
indices[indexIndex++] = v + 3;
indices[indexIndex++] = v + 1;
uvIndex = AddUvs(nX, transparent, newUV, uvIndex);
const c = UIntToColor(nX);
c.toArray(newColor, colorIndex);
colorIndex += 3;
c.toArray(newColor, colorIndex);
colorIndex += 3;
c.toArray(newColor, colorIndex);
colorIndex += 3;
c.toArray(newColor, colorIndex);
colorIndex += 3;
}
}
if (IsGeometry(i, transparent) !== IsGeometry(nY, transparent))
{
const v = vertexIndex/3;
/* newVertices.Add(new Vector3(x, y + 1, z));
newVertices.Add(new Vector3(x + 1, y + 1, z));
newVertices.Add(new Vector3(x, y + 1, z + 1));
newVertices.Add(new Vector3(x + 1, y + 1, z + 1)); */
newVertices[vertexIndex++] = x;
newVertices[vertexIndex++] = y + 1;
newVertices[vertexIndex++] = z;
newVertices[vertexIndex++] = x + 1;
newVertices[vertexIndex++] = y + 1;
newVertices[vertexIndex++] = z;
newVertices[vertexIndex++] = x;
newVertices[vertexIndex++] = y + 1;
newVertices[vertexIndex++] = z + 1;
newVertices[vertexIndex++] = x + 1;
newVertices[vertexIndex++] = y + 1;
newVertices[vertexIndex++] = z + 1;
if (i < nY)
{
indices[indexIndex++] = v + 0;
indices[indexIndex++] = v + 1;
indices[indexIndex++] = v + 2;
indices[indexIndex++] = v + 1;
indices[indexIndex++] = v + 3;
indices[indexIndex++] = v + 2;
uvIndex = AddUvs(nY, transparent, newUV, uvIndex);
const c = UIntToColor(nY);
c.toArray(newColor, colorIndex);
colorIndex += 3;
c.toArray(newColor, colorIndex);
colorIndex += 3;
c.toArray(newColor, colorIndex);
colorIndex += 3;
c.toArray(newColor, colorIndex);
colorIndex += 3;
}
else
{
indices[indexIndex++] = v + 2;
indices[indexIndex++] = v + 1;
indices[indexIndex++] = v + 0;
indices[indexIndex++] = v + 2;
indices[indexIndex++] = v + 3;
indices[indexIndex++] = v + 1;
uvIndex = AddUvs(i, transparent, newUV, uvIndex);
const c = UIntToColor(i);
c.toArray(newColor, colorIndex);
colorIndex += 3;
c.toArray(newColor, colorIndex);
colorIndex += 3;
c.toArray(newColor, colorIndex);
colorIndex += 3;
c.toArray(newColor, colorIndex);
colorIndex += 3;
}
}
if (IsGeometry(i, transparent) !== IsGeometry(nZ, transparent))
{
const v = vertexIndex/3;
/* newVertices.Add(new Vector3(x, y, z + 1));
newVertices.Add(new Vector3(x + 1, y, z + 1));
newVertices.Add(new Vector3(x, y + 1, z + 1));
newVertices.Add(new Vector3(x + 1, y + 1, z + 1)); */
newVertices[vertexIndex++] = x;
newVertices[vertexIndex++] = y;
newVertices[vertexIndex++] = z + 1;
newVertices[vertexIndex++] = x + 1;
newVertices[vertexIndex++] = y;
newVertices[vertexIndex++] = z + 1;
newVertices[vertexIndex++] = x;
newVertices[vertexIndex++] = y + 1;
newVertices[vertexIndex++] = z + 1;
newVertices[vertexIndex++] = x + 1;
newVertices[vertexIndex++] = y + 1;
newVertices[vertexIndex++] = z + 1;
if (i > nZ)
{
indices[indexIndex++] = v + 0;
indices[indexIndex++] = v + 1;
indices[indexIndex++] = v + 2;
indices[indexIndex++] = v + 1;
indices[indexIndex++] = v + 3;
indices[indexIndex++] = v + 2;
uvIndex = AddUvs(i, transparent, newUV, uvIndex);
const c = UIntToColor(i);
c.toArray(newColor, colorIndex);
colorIndex += 3;
c.toArray(newColor, colorIndex);
colorIndex += 3;
c.toArray(newColor, colorIndex);
colorIndex += 3;
c.toArray(newColor, colorIndex);
colorIndex += 3;
}
else
{
indices[indexIndex++] = v + 2;
indices[indexIndex++] = v + 1;
indices[indexIndex++] = v + 0;
indices[indexIndex++] = v + 2;
indices[indexIndex++] = v + 3;
indices[indexIndex++] = v + 1;
uvIndex = AddUvs(nZ, transparent, newUV, uvIndex);
const c = UIntToColor(nZ);
c.toArray(newColor, colorIndex);
colorIndex += 3;
c.toArray(newColor, colorIndex);
colorIndex += 3;
c.toArray(newColor, colorIndex);
colorIndex += 3;
c.toArray(newColor, colorIndex);
colorIndex += 3;
}
}
}
}
}
for (let i = 0; i < vertexIndex; i += 3) {
newVertices[i] = -newVertices[i];
}
for (let i = 0; i < indexIndex; i += 3) {
const a = indices[i+1];
indices[i+1] = indices[i];
indices[i] = a;
}
const geometry = new THREE.BufferGeometry();
geometry.setAttribute('position', new THREE.BufferAttribute(newVertices.subarray(0, vertexIndex), 3));
geometry.setAttribute('uv', new THREE.BufferAttribute(newUV.subarray(0, uvIndex), 2));
geometry.setAttribute('color', new THREE.BufferAttribute(newColor.subarray(0, colorIndex), 3));
geometry.setIndex(new THREE.BufferAttribute(indices.subarray(0, indexIndex), 1));
return geometry;
}
const _getCoord = (x, z) => parcels.find(parcel);
(async () => {
const parcels = await (async () => {
const nonce = 30*Math.floor(Date.now()/1e3/30);
console.log('got nonce', `https://https-js-cryptovoxels-com.proxy.exokit.org/cache/${nonce}/parcels.json`);
const res = await fetch(`https://https-js-cryptovoxels-com.proxy.exokit.org/cache/${nonce}/parcels.json`);
const j = await res.json();
const {parcels} = j;
return parcels;
})();
const renderer = new THREE.WebGLRenderer({
antialias: true,
alpha: true,
});
renderer.setSize(window.innerWidth, window.innerHeight);
renderer.setPixelRatio(window.devicePixelRatio);
document.body.appendChild(renderer.domElement);
window.addEventListener('resize', e => {
renderer.setSize(window.innerWidth, window.innerHeight);
camera.aspect = window.innerWidth/window.innerHeight;
camera.updateProjectionMatrix();
});
const scene = new THREE.Scene();
window.scene = scene;
const x = -3;
const z = -3;
const camera = new THREE.PerspectiveCamera(90, window.innerWidth/window.innerHeight, 0.1, 300);
camera.position.set(x*2, 10, z*2 + 10);
camera.lookAt(new THREE.Vector3());
const ambientLight = new THREE.AmbientLight(0x808080);
scene.add(ambientLight);
const directionalLight = new THREE.DirectionalLight(0xFFFFFF, 1);
directionalLight.position.set(1, 2, 3);
scene.add(directionalLight);
const orbitControls = new OrbitControls(camera, renderer.domElement);
orbitControls.screenSpacePanning = true;
orbitControls.enableMiddleZoom = false;
// orbitControls.target.copy(camera.position).add(new THREE.Vector3(0, camera.position.y, -3).applyQuaternion(camera.quaternion));
orbitControls.target.set(x*2, 0, z*2);
orbitControls.update();
const floorMesh = (() => {
const geometry = new THREE.PlaneBufferGeometry(mapSize, mapSize)
.applyMatrix4(new THREE.Matrix4().makeRotationFromQuaternion(new THREE.Quaternion().setFromAxisAngle(new THREE.Vector3(1, 0, 0), -Math.PI/2)));
const canvas = document.createElement('canvas');
canvas.width = numTiles*tilePixelWidth;
canvas.height = numTiles*tilePixelWidth;
(async () => {
const ctx = canvas.getContext('2d');
for (let dx = -tileRange; dx < tileRange; dx++) {
for (let dz = -tileRange; dz < tileRange; dz++) {
const x = centerTile + dx;
const z = centerTile + dz;
const img = await new Promise((accept, reject) => {
const img = new Image();
img.src = `https://map.cryptovoxels.com/tile/?z=${zoom}&x=${x}&y=${z}`;
img.crossOrigin = 'Anonymous';
img.onload = () => {
accept(img);
};
img.onerror = reject;
});
ctx.drawImage(img, (dx+tileRange)*tilePixelWidth, (dz+tileRange)*tilePixelWidth);
// document.body.appendChild(img);
// console.log('append', img, img.src, (dx+tileRange)*tilePixelWidth, (dz+tileRange)*tilePixelWidth);
texture.needsUpdate = true;
}
}
})().catch(err => {
console.warn(err);
});
const texture = new THREE.Texture(canvas);
const material = new THREE.MeshBasicMaterial({
map: texture,
});
const mesh = new THREE.Mesh(geometry, material);
// mesh.position.x = -tileVoxelWidth/2;
// mesh.position.z = -tileVoxelWidth/2;
mesh.position.y = -0.1;
mesh.frustumCulled = false;
return mesh;
})();
scene.add(floorMesh);
const cubeMesh = (() => {
const geometry = new THREE.BoxBufferGeometry(1, 1);
const material = new THREE.MeshBasicMaterial({
color: 0xFF0000,
});
const mesh = new THREE.Mesh(geometry, material);
mesh.frustumCulled = false;
return mesh;
})();
// cubeMesh.position.x = 10;
// cubeMesh.position.z = 10;
scene.add(cubeMesh);
/* const cubeMesh2 = (() => {
const geometry = new THREE.BoxBufferGeometry(1, 1);
const material = new THREE.MeshBasicMaterial({
color: 0xFF0000,
});
const mesh = new THREE.Mesh(geometry, material);
mesh.frustumCulled = false;
return mesh;
})();
cubeMesh2.position.x = 20;
cubeMesh2.position.z = 20;
scene.add(cubeMesh2); */
const imageGeometry = new THREE.PlaneBufferGeometry(2, 2)
.applyMatrix4(new THREE.Matrix4().makeScale(-1, 1, 1));
for (let i = 0; i < imageGeometry.index.array.length; i += 3) {
const a = imageGeometry.index.array[i+1];
imageGeometry.index.array[i+1] = imageGeometry.index.array[i];
imageGeometry.index.array[i] = a;
}
const tileMaterial = new THREE.MeshBasicMaterial({
color: 0x0000FF,
transparent: true,
opacity: 0.5,
side: THREE.DoubleSide,
});
const _loadCoord = (x, z, parcel) => {
console.log('load coord', parcel);
const object = new THREE.Object3D();
let live = true;
const promise = parcel ? (async() => {
const {id, hash} = parcel;
const content = await _getContent(id, hash);
if (!live) return;
let {voxels, palette, tileset, features, x1, x2, y1, y2, z1, z2} = content;
if (tileset) {
tileset = `https://https-cdn-cryptovoxels-com.proxy.exokit.org${tileset}`;
} else {
tileset = `https://https-www-cryptovoxels-com.proxy.exokit.org/textures/atlas-ao.png`;
}
const w = x2 - x1;
const h = y2 - y1;
const d = z2 - z1;
const field = new Uint16Array(pako.inflate(convertDataURIToBinary(voxels)).buffer);
object.position.x = x1*2;
object.position.z = -z1*2;
object.rotation.order = 'YXZ';
object.rotation.y = Math.PI;
console.log('got content', content, w, h, d, w*h*d);
const solidGeometry = GenerateField(field, w, h, d, false);
const transparentGeometry = GenerateField(field, w, h, d, true);
console.log('got geometries', {solidGeometry, transparentGeometry});
const img = new Image();
img.crossOrigin = 'Anonymous';
img.src = tileset;
img.onload = () => {
texture.needsUpdate = true;
};
img.onerror = err => {
console.warn(err.stack);
};
const texture = new THREE.Texture(img);
{
solidGeometry.computeVertexNormals();
const material = new THREE.MeshPhongMaterial({
// color: 0xFF0000,
map: texture,
vertexColors: true,
});
const mesh = new THREE.Mesh(solidGeometry, material);
mesh.frustumCulled = false;
object.add(mesh);
}
{
transparentGeometry.computeVertexNormals();
const material = new THREE.MeshPhongMaterial({
// map: texture,
// color: 0xFFFFFF,
vertexColors: true,
transparent: true,
opacity: 0.5,
});
const mesh = new THREE.Mesh(transparentGeometry, material);
mesh.frustumCulled = false;
object.add(mesh);
}
for (const feature of features) {
if (!live) return;
try {
const {type} = feature;
switch (type) {
case 'image': {
const {url, position, rotation, scale} = feature;
const u = new URL(url);
u.host = u.protocol.replace(/:/g, '-') + u.host.replace(/\./g, '-') + '.proxy.exokit.org';
// console.log('got u', u.href);
const geometry = imageGeometry;
const material = _getTextureMaterialCached(u.href);
const mesh = new THREE.Mesh(geometry, material);
mesh.frustumCulled = false;
mesh.position.fromArray(position);
mesh.position.x *= -1;
mesh.position.multiplyScalar(2);
mesh.position.x -= w - 0.5;
mesh.position.y += 0.5;
mesh.position.z += d - 0.5;
// console.log('pos x 1', url, position, mesh);
mesh.rotation.order = 'YXZ';
mesh.rotation.fromArray(rotation);
mesh.rotation.y *= -1;
mesh.rotation.z *= -1;
mesh.scale.fromArray(scale);
object.add(mesh);
break;
}
case 'nft-image': {
const {url, position, rotation, scale} = feature;
const match = url.match(/https:\/\/opensea\.io\/assets\/([^\/]+)\/([0-9]+)$/);
if (match) {
const contract = match[1];
const token = match[2];
const u = `https://https-img-cryptovoxels-com.proxy.exokit.org/node/opensea?contract=${contract}&token=${token}&force_update=0`;
const res = await fetch(u);
const j = await res.json();
const {image_url} = j;
const geometry = imageGeometry;
const material = _getTextureMaterialCached(image_url);
const mesh = new THREE.Mesh(geometry, material);
mesh.frustumCulled = false;
mesh.position.fromArray(position);
mesh.position.x *= -1;
mesh.position.multiplyScalar(2);
mesh.position.x -= w - 0.5;
mesh.position.y += 0.5;
mesh.position.z += d - 0.5;
// console.log('pos x 2', url, position, mesh);
mesh.rotation.order = 'YXZ';
mesh.rotation.fromArray(rotation);
mesh.rotation.y *= -1;
mesh.rotation.z *= -1;
mesh.scale.fromArray(scale);
object.add(mesh);
}
break;
}
case 'vox-model': {
const {url, position, rotation, scale, flipX} = feature;
// const u = new URL(url);
// u.host = u.protocol.replace(/:/g, '-') + u.host.replace(/\./g, '-') + '.proxy.exokit.org';
// const model = await _loadVoxCached(u.href);
const u = `https://https-cdn-cryptovoxels-com.proxy.exokit.org/node/vox?url=${encodeURI(url)}`;
const model = await _loadVoxCached(u);
console.log('got u', u.href, model, {w, h, d, position, rotation, scale});
model.position.fromArray(position);
model.position.x *= -1;
model.position.multiplyScalar(2);
model.position.x -= w - 0.5;
model.position.y += 0.5;
model.position.z += d - 0.5;
model.rotation.order = 'YXZ';
model.rotation.fromArray(rotation);
// model.rotation.x *= -1;
model.rotation.y *= -1;
model.rotation.z *= -1;
model.scale.fromArray(scale).multiplyScalar(0.04);
// model.scale.z *= -1;
model.frustumCulled = false;
object.add(model);
break;
}
}
} catch (err) {
console.warn(err);
}
}
console.log('done');
})() : Promise.resolve();
const cancel = () => {
live = false;
console.log('cancel');
};
return {
object,
promise,
cancel,
};
};
class Tracker {
constructor() {
this.lastCoord = new THREE.Vector2(NaN, NaN);
this.lastScene = '';
this.meshes = [];
this.rootMesh = null;
this.running = false;
this.queue = null;
this.cancel = null;
}
async update(position) {
const currentCoord = new THREE.Vector2(Math.floor(position.x/2), Math.floor(position.z/2));
const {lastCoord} = this;
this.lastCoord = currentCoord;
if (!currentCoord.equals(lastCoord)) {
const coord = _getParcel(currentCoord.x, -currentCoord.y, parcels);
console.log('got coord', coord && coord.name);
for (const mesh of this.meshes) {
scene.remove(mesh);
}
this.meshes.length = 0;
if (coord) {
const {x1, x2, z1, z2} = coord;
const w = (x2 - x1)*2;
const d = (z2 - z1)*2;
const geometry = new THREE.PlaneBufferGeometry(w, d)
.applyMatrix4(new THREE.Matrix4().makeTranslation(w/2, d/2, 0))
.applyMatrix4(new THREE.Matrix4().makeRotationFromQuaternion(new THREE.Quaternion().setFromAxisAngle(new THREE.Vector3(1, 0, 0), -Math.PI/2)));
const mesh = new THREE.Mesh(geometry, tileMaterial);
mesh.position.x = x1*2;
mesh.position.y = 0.1;
mesh.position.z = -z1*2;
mesh.frustumCulled = false;
scene.add(mesh);
this.meshes.push(mesh);
}
let currentScene;
if (coord) {
currentScene = coord.id;
} else {
currentScene = '';
}
const {lastScene} = this;
this.lastScene = currentScene;
if (currentScene !== lastScene) {
this.load(currentCoord.x, -currentCoord.y, coord);
}
}
}
async load(x, z, coord) {
if (!this.running) {
this.running = true;
const o = _loadCoord(x, z, coord);
if (this.rootMesh) {
scene.remove(this.rootMesh);
this.rootMesh = null;
}
scene.add(o.object);
this.rootMesh = o.object;
// window.rootMesh = this.rootMesh;
this.cancel = () => {
o.cancel();
};
await o.promise;
// console.log('stop running');
this.running = false;
if (this.queue) {
// console.log('re-queue');
const {x, z, coord} = this.queue;
this.queue = null
this.load(x, z, coord);
}
} else {
this.queue = {
x,
z,
coord,
};
if (this.cancel) {
this.cancel();
this.cancel = null;
}
}
}
}
const tracker = new Tracker();
renderer.setAnimationLoop(() => {
orbitControls.update();
cubeMesh.position.copy(orbitControls.target);
tracker.update(orbitControls.target);
renderer.render(scene, camera);
});
})();
</script>
</body>
</html>