File size: 18,189 Bytes
6ea2eb4 4f867c3 6ea2eb4 4f867c3 ec2be1b 6ea2eb4 1a55305 ec2be1b 1a55305 6ea2eb4 4f867c3 6ea2eb4 1a55305 6ea2eb4 1a55305 6ea2eb4 1a55305 6ea2eb4 4f867c3 6ea2eb4 8ac7a4d 6ea2eb4 1a55305 6ea2eb4 1a55305 8ac7a4d 6ea2eb4 1a55305 8ac7a4d 1a55305 6ea2eb4 1a55305 8ac7a4d 1a55305 8ac7a4d 1a55305 8ac7a4d 1a55305 8ac7a4d 1a55305 8ac7a4d 1a55305 8ac7a4d 1a55305 6ea2eb4 1a55305 8ac7a4d 6ea2eb4 8ac7a4d 6ea2eb4 8ac7a4d ec2be1b 4f867c3 1a55305 6ea2eb4 1a55305 ec2be1b 8ac7a4d 1a55305 8ac7a4d 1a55305 8ac7a4d ec2be1b 8ac7a4d 1a55305 6ea2eb4 8ac7a4d 6ea2eb4 8ac7a4d 6ea2eb4 1a55305 8ac7a4d 1a55305 8ac7a4d 1a55305 8ac7a4d ec2be1b 4f867c3 8ac7a4d 1a55305 8ac7a4d 1a55305 8ac7a4d 1a55305 8ac7a4d 1a55305 6ea2eb4 1a55305 8ac7a4d 1a55305 8ac7a4d 1a55305 8ac7a4d 1a55305 4f867c3 1a55305 8ac7a4d 1a55305 8ac7a4d ec2be1b 1a55305 8ac7a4d 1a55305 ec2be1b 1a55305 ec2be1b 1a55305 8ac7a4d ec2be1b 8ac7a4d 1a55305 8ac7a4d 1a55305 8ac7a4d 1a55305 8ac7a4d 1a55305 8ac7a4d 1a55305 8ac7a4d 1a55305 8ac7a4d 6ea2eb4 1a55305 6ea2eb4 1a55305 4f867c3 1a55305 4f867c3 1a55305 4f867c3 6ea2eb4 1a55305 6ea2eb4 4f867c3 1a55305 ec2be1b 6ea2eb4 4f867c3 6ea2eb4 ec2be1b 6ea2eb4 ec2be1b 8ac7a4d ec2be1b 8ac7a4d 4f867c3 8ac7a4d 1a55305 4f867c3 1a55305 8ac7a4d 4f867c3 ec2be1b 8ac7a4d 1a55305 8ac7a4d 4f867c3 8ac7a4d 1a55305 4f867c3 ec2be1b 4f867c3 8ac7a4d ec2be1b 6ea2eb4 85e35de 6ea2eb4 4f867c3 ec2be1b 8ac7a4d 6ea2eb4 4f867c3 6ea2eb4 1a55305 6ea2eb4 1a55305 6ea2eb4 1a55305 6ea2eb4 1a55305 6ea2eb4 8ac7a4d 1a55305 6ea2eb4 1a55305 6ea2eb4 1a55305 6ea2eb4 4f867c3 6ea2eb4 1a55305 6ea2eb4 4f867c3 6ea2eb4 ec2be1b 6ea2eb4 8ac7a4d 6ea2eb4 8ac7a4d 1a55305 8ac7a4d 1a55305 ec2be1b 6ea2eb4 |
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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 |
import streamlit as st
import streamlit.components.v1 as components
st.set_page_config(page_title="3D City Evolution Simulator", layout="wide")
st.title("3D City Evolution Simulator")
st.write("Watch a 3D city grow with roads, vegetation, and dynamic weather")
# Sliders for container size with initial 3:4 aspect ratio
max_width = min(1200, st.session_state.get('window_width', 1200))
max_height = min(1600, st.session_state.get('window_height', 1600))
col1, col2 = st.columns(2)
with col1:
container_width = st.slider("Container Width (px)", 300, max_width, 768, step=50)
with col2:
container_height = st.slider("Container Height (px)", 400, max_height, 1024, step=50)
html_code = f"""
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>3D City Evolution Simulator</title>
<style>
body {{ margin: 0; overflow: hidden; }}
#container {{ width: {container_width}px; height: {container_height}px; margin: 0 auto; }}
canvas {{ width: 100%; height: 100%; display: block; }}
.ui-panel {{
position: absolute;
top: 10px;
right: 10px;
background: rgba(0,0,0,0.7);
padding: 15px;
border-radius: 5px;
color: white;
font-family: Arial, sans-serif;
z-index: 1000;
}}
.ui-panel button {{
margin: 5px 0;
padding: 5px 10px;
width: 100%;
background: #4CAF50;
color: white;
border: none;
border-radius: 3px;
cursor: pointer;
}}
.ui-panel button:hover {{ background: #45a049; }}
</style>
</head>
<body>
<div id="container"></div>
<div class="ui-panel">
<h3>City Controls</h3>
<button id="evolve">Evolve City</button>
<button id="reset">Reset View</button>
<div id="stats">
<p>Buildings: <span id="building-count">0</span></p>
<p>Blocks: <span id="block-count">0</span></p>
<p>Generation: <span id="generation">0</span></p>
</div>
</div>
<script src="https://cdnjs.cloudflare.com/ajax/libs/three.js/r134/three.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/[email protected]/examples/js/controls/OrbitControls.js"></script>
<script>
class BuildingLSystem {{
constructor() {{
this.axiom = "F";
this.rules = {{
"F": ["F[+F]", "F[-F]", "FF", "F"],
"+": ["+"],
"-": ["-"],
"[": ["["],
"]": ["]"]
}};
this.angle = Math.PI / 6;
}}
generate() {{
let result = this.axiom;
for (let i = 0; i < 2; i++) {{
let newString = "";
for (let char of result) {{
if (this.rules[char]) {{
const possible = this.rules[char];
newString += possible[Math.floor(Math.random() * possible.length)];
}} else {{
newString += char;
}}
}}
result = newString;
}}
return result;
}}
build(scene, basePos, maxHeight) {{
let height = 0;
const stack = [];
let position = basePos.clone();
let direction = new THREE.Vector3(0, 1, 0);
const structure = new THREE.Group();
let baseWidth = 1.5;
// Add small attached buildings horizontally
const attachCount = Math.floor(Math.random() * 3); // 0-2 attachments
for (let i = 0; i < attachCount; i++) {{
const attachWidth = baseWidth * 0.6;
const attachHeight = 1 + Math.random() * 2;
const geo = new THREE.BoxGeometry(attachWidth, attachHeight, attachWidth);
const mat = new THREE.MeshPhongMaterial({{
color: new THREE.Color(0.5 + Math.random() * 0.5,
0.5 + Math.random() * 0.5,
0.5 + Math.random() * 0.5)
}});
const attach = new THREE.Mesh(geo, mat);
const offsetX = (i + 1) * (baseWidth + attachWidth) * (Math.random() > 0.5 ? 1 : -1);
attach.position.set(position.x + offsetX, attachHeight / 2, position.z);
attach.castShadow = true;
structure.add(attach);
}}
for (let char of this.generate()) {{
switch(char) {{
case 'F':
if (height < maxHeight) {{
const width = baseWidth * (1 - height / maxHeight);
const floorHeight = 2 + Math.random() * 2;
const geo = new THREE.BoxGeometry(width, floorHeight, width);
const mat = new THREE.MeshPhongMaterial({{
color: new THREE.Color(0.5 + Math.random() * 0.5,
0.5 + Math.random() * 0.5,
0.5 + Math.random() * 0.5)
}});
const floor = new THREE.Mesh(geo, mat);
floor.position.copy(position).add(new THREE.Vector3(0, floorHeight/2, 0));
floor.castShadow = true;
structure.add(floor);
position.y += floorHeight;
height += floorHeight;
}}
break;
case '+':
direction.applyAxisAngle(new THREE.Vector3(0, 0, 1), this.angle);
break;
case '-':
direction.applyAxisAngle(new THREE.Vector3(0, 0, 1), -this.angle);
break;
case '[':
stack.push(position.clone());
break;
case ']':
if (stack.length > 0) position = stack.pop();
break;
}}
}}
return structure;
}}
}}
class CitySimulator {{
constructor() {{
this.blocks = [];
this.roads = [];
this.blockSize = 10;
this.maxBuildingsPerBlock = 5;
this.generation = 0;
this.lakeCenters = [
new THREE.Vector2(20, 20),
new THREE.Vector2(-30, 10)
];
}}
addBlock(scene, x, z) {{
const block = {{
position: new THREE.Vector2(x, z),
buildings: [],
maxHeight: this.isWaterfront(x, z) ? 20 : 12
}};
this.blocks.push(block);
this.evolveBlock(scene, block, true);
}}
isWaterfront(x, z) {{
const pos = new THREE.Vector2(x, z);
return this.lakeCenters.some(center =>
pos.distanceTo(center) < 15 && pos.distanceTo(center) > 5);
}}
evolveBlock(scene, block, initial = false) {{
if (block.buildings.length < this.maxBuildingsPerBlock) {{
const lsystem = new BuildingLSystem();
const gridX = Math.floor(Math.random() * 3) - 1;
const gridZ = Math.floor(Math.random() * 3) - 1;
const basePos = new THREE.Vector3(
block.position.x + gridX * 2,
this.getTerrainHeight(block.position.x, block.position.y),
block.position.y + gridZ * 2
);
const building = lsystem.build(scene, basePos, block.maxHeight);
if (this.isWaterfront(block.position.x, block.position.y)) {{
building.scale.set(1.5, 2, 1.5);
}}
scene.add(building);
block.buildings.push(building);
}}
}}
addRoad(scene, start, end) {{
const distance = start.distanceTo(end);
const roadGeo = new THREE.PlaneGeometry(2, distance);
const roadMat = new THREE.MeshPhongMaterial({{ color: 0x555555 }});
const road = new THREE.Mesh(roadGeo, roadMat);
road.rotation.x = -Math.PI / 2;
const midPoint = start.clone().add(end).multiplyScalar(0.5);
road.position.set(midPoint.x, 0.02, midPoint.y);
road.lookAt(new THREE.Vector3(end.x, 0, end.y));
road.receiveShadow = true;
scene.add(road);
this.roads.push(road);
}}
addVegetation(scene) {{
const treeGeo = new THREE.ConeGeometry(1, 3, 8);
const treeMat = new THREE.MeshPhongMaterial({{ color: 0x228B22 }});
const shrubGeo = new THREE.SphereGeometry(0.5, 8, 8);
const shrubMat = new THREE.MeshPhongMaterial({{ color: 0x32CD32 }});
for (let i = 0; i < 10; i++) {{
const x = (Math.random() - 0.5) * 90;
const z = (Math.random() - 0.5) * 120;
if (!this.isInLake(x, z)) {{
const tree = new THREE.Mesh(treeGeo, treeMat);
tree.position.set(x, this.getTerrainHeight(x, z) + 1.5, z);
tree.castShadow = true;
scene.add(tree);
const shrub = new THREE.Mesh(shrubGeo, shrubMat);
shrub.position.set(x + 1, this.getTerrainHeight(x, z) + 0.5, z + 1);
shrub.castShadow = true;
scene.add(shrub);
}}
}}
}}
evolve(scene) {{
this.generation++;
if (this.blocks.length < 20) {{
const x = (Math.random() - 0.5) * 90;
const z = (Math.random() - 0.5) * 120;
if (!this.isInLake(x, z)) {{
this.addBlock(scene, x, z);
if (this.blocks.length > 1) {{
const lastBlock = this.blocks[this.blocks.length - 2];
this.addRoad(scene, lastBlock.position, this.blocks[this.blocks.length - 1].position);
}}
}}
}}
this.blocks.forEach(block => this.evolveBlock(scene, block));
this.addVegetation(scene);
this.updateStats();
}}
getTerrainHeight(x, z) {{
return Math.sin(x * 0.05) * Math.cos(z * 0.05) * 5;
}}
isInLake(x, z) {{
const pos = new THREE.Vector2(x, z);
return this.lakeCenters.some(center => pos.distanceTo(center) < 10);
}}
updateStats() {{
const totalBuildings = this.blocks.reduce((sum, block) => sum + block.buildings.length, 0);
document.getElementById('building-count').textContent = totalBuildings;
document.getElementById('block-count').textContent = this.blocks.length;
document.getElementById('generation').textContent = this.generation;
}}
}}
let scene, camera, renderer, controls;
function init() {{
const container = document.getElementById('container');
if (!container) {{
console.error('Container not found');
return;
}}
// Scene
scene = new THREE.Scene();
scene.background = new THREE.Color(0x87CEEB);
// Camera with 3:4 aspect ratio
camera = new THREE.PerspectiveCamera(75, 3 / 4, 0.1, 1000);
camera.position.set(0, 50, 60);
// Renderer
renderer = new THREE.WebGLRenderer({{ antialias: true }});
renderer.setSize({container_width}, {container_height});
renderer.shadowMap.enabled = true;
renderer.shadowMap.type = THREE.PCFSoftShadowMap;
container.appendChild(renderer.domElement);
// Lights
const ambientLight = new THREE.AmbientLight(0x404040);
scene.add(ambientLight);
const sun = new THREE.DirectionalLight(0xffffff, 0.8);
sun.position.set(50, 50, 50);
sun.castShadow = true;
sun.shadow.mapSize.width = 1024;
sun.shadow.mapSize.height = 1024;
sun.shadow.camera.near = 0.5;
sun.shadow.camera.far = 500;
scene.add(sun);
// Ground with bump mapping
const groundGeo = new THREE.PlaneGeometry(1000, 1000, 32, 32); // Extended to horizon
const groundMat = new THREE.MeshPhongMaterial({{
color: 0x4a7043,
bumpScale: 0.5,
shininess: 10
}});
const ground = new THREE.Mesh(groundGeo, groundMat);
ground.rotation.x = -Math.PI / 2;
ground.position.y = -0.1;
ground.receiveShadow = true;
// Simple bump map (noise)
const canvas = document.createElement('canvas');
canvas.width = 256;
canvas.height = 256;
const ctx = canvas.getContext('2d');
for (let x = 0; x < 256; x++) {{
for (let y = 0; y < 256; y++) {{
const value = Math.random() * 255;
ctx.fillStyle = `rgb(${value},${value},${value})`;
ctx.fillRect(x, y, 1, 1);
}}
}}
const bumpTexture = new THREE.Texture(canvas);
bumpTexture.needsUpdate = true;
groundMat.bumpMap = bumpTexture;
scene.add(ground);
// Lakes
const lakeGeo = new THREE.CircleGeometry(10, 32);
const lakeMat = new THREE.MeshPhongMaterial({{ color: 0x4682b4 }});
const lakeCenters = [new THREE.Vector2(20, 20), new THREE.Vector2(-30, 10)];
lakeCenters.forEach(center => {{
const lake = new THREE.Mesh(lakeGeo, lakeMat);
lake.rotation.x = -Math.PI / 2;
lake.position.set(center.x, 0.01, center.y);
lake.receiveShadow = true;
scene.add(lake);
}});
// Bridge
const bridgeGeo = new THREE.BoxGeometry(5, 0.2, 15);
const bridgeMat = new THREE.MeshPhongMaterial({{ color: 0x808080 }});
const bridge = new THREE.Mesh(bridgeGeo, bridgeMat);
bridge.position.set(15, 0.2, 20);
bridge.castShadow = true;
bridge.receiveShadow = true;
scene.add(bridge);
// Clouds
const cloudGeo = new THREE.SphereGeometry(5, 8, 8);
const cloudMat = new THREE.MeshPhongMaterial({{ color: 0xFFFFFF, opacity: 0.8, transparent: true }});
for (let i = 0; i < 5; i++) {{
const cloud = new THREE.Mesh(cloudGeo, cloudMat);
cloud.position.set(
(Math.random() - 0.5) * 200,
50 + Math.random() * 20,
(Math.random() - 0.5) * 200
);
cloud.castShadow = true;
scene.add(cloud);
}}
// Controls
controls = new THREE.OrbitControls(camera, renderer.domElement);
controls.enableDamping = true;
controls.target.set(0, 0, 0);
// City
const city = new CitySimulator();
city.addBlock(scene, 0, 0);
// Events
window.addEventListener('resize', onWindowResize);
document.getElementById('evolve').addEventListener('click', () => city.evolve(scene));
document.getElementById('reset').addEventListener('click', resetView);
animate();
}}
function resetView() {{
camera.position.set(0, 50, 60);
controls.target.set(0, 0, 0);
controls.update();
}}
function onWindowResize() {{
const width = {container_width};
const height = {container_height};
camera.aspect = 3 / 4;
camera.updateProjectionMatrix();
renderer.setSize(width, height);
}}
function animate() {{
requestAnimationFrame(animate);
controls.update();
renderer.render(scene, camera);
}}
window.onload = init;
</script>
</body>
</html>
"""
# Render the HTML component with dynamic size
components.html(html_code, width=container_width, height=container_height)
st.sidebar.title("3D City Evolution Simulator")
st.sidebar.write("""
## How to Play
Watch a 3D city evolve with roads, vegetation, and dynamic weather.
### Controls:
- **Evolve City**: Grow the city
- **Reset View**: Return to default view
- **Left-click + drag**: Rotate
- **Right-click + drag**: Pan
- **Scroll**: Zoom
- **Sliders**: Adjust play area size
### Features:
- 3:4 initial play area (768x1024)
- Roads connect blocks
- Trees and shrubs added each evolution
- Extended green ground with bump mapping
- Clouds and sunlight with shadows
- Buildings with horizontal attachments
""") |