nodejs-voxelearth/visualizer.html at main · voxelearth/nodejs-voxelearth · GitHub

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<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Voxel Visualizer - Luanti Earth</title>
    <style>
        body {
            margin: 0;
            overflow: hidden;
            background-color: #1a1a1a;
            color: white;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }

        #info {
            position: absolute;
            top: 10px;
            left: 10px;
            z-index: 100;
            background: rgba(0, 0, 0, 0.85);
            padding: 15px;
            border-radius: 8px;
            max-width: 400px;
        }

        #controls {
            margin-top: 15px;
        }

        textarea {
            width: 100%;
            height: 150px;
            background: #222;
            color: #0f0;
            border: 1px solid #555;
            font-family: monospace;
            font-size: 12px;
            padding: 5px;
        }

        button {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            border: none;
            padding: 8px 16px;
            cursor: pointer;
            border-radius: 4px;
            margin: 5px 0;
            font-weight: bold;
        }

        button:hover {
            transform: translateY(-2px);
            box-shadow: 0 4px 8px rgba(102, 126, 234, 0.4);
        }

        #status {
            display: block;
            margin-top: 10px;
            padding: 5px;
            background: #333;
            border-radius: 4px;
        }

        h3 {
            margin: 0 0 10px 0;
            color: #667eea;
        }

        .hint {
            font-size: 11px;
            color: #999;
            margin-top: 5px;
        }
    </style>
    <script type="importmap">
        {
            "imports": {
                "three": "https://unpkg.com/three@0.160.0/build/three.module.js",
                "three/addons/": "https://unpkg.com/three@0.160.0/examples/jsm/"
            }
        }
    </script>
</head>

<body>
    <div id="info">
        <h3>🌍 Voxel Visualizer</h3>
        <p>Paste <code>voxels.json</code> content below:</p>
        <textarea id="jsonInput" placeholder='Paste JSON here...'></textarea>
        <div id="controls">
            <button onclick="loadBlocks()">✨ Visualize</button>
            <button onclick="resetCamera()">📷 Reset Camera</button>
            <button onclick="toggleWireframe()">🔲 Toggle Wireframe</button>
            <span id="status">Ready</span>
            <div class="hint">💡 Use mouse to orbit, scroll to zoom</div>
        </div>
    </div>
    <script type="module">
        import * as THREE from 'three';
        import { OrbitControls } from 'three/addons/controls/OrbitControls.js';

        let scene, camera, renderer, controls, instancedMesh;
        let wireframe = false;

        init();
        animate();

        function init() {
            scene = new THREE.Scene();
            scene.background = new THREE.Color(0x0a0a0a);
            scene.fog = new THREE.Fog(0x0a0a0a, 50, 200);

            camera = new THREE.PerspectiveCamera(60, window.innerWidth / window.innerHeight, 0.1, 1000);
            camera.position.set(50, 30, 50);

            renderer = new THREE.WebGLRenderer({ antialias: true });
            renderer.setSize(window.innerWidth, window.innerHeight);
            renderer.setPixelRatio(window.devicePixelRatio);
            document.body.appendChild(renderer.domElement);

            controls = new OrbitControls(camera, renderer.domElement);
            controls.enableDamping = true;
            controls.dampingFactor = 0.05;
            controls.minDistance = 5;
            controls.maxDistance = 500;

            // Lights
            const ambientLight = new THREE.AmbientLight(0x404040, 0.5);
            scene.add(ambientLight);

            const dirLight1 = new THREE.DirectionalLight(0xffffff, 0.8);
            dirLight1.position.set(10, 20, 10);
            scene.add(dirLight1);

            const dirLight2 = new THREE.DirectionalLight(0x6699ff, 0.4);
            dirLight2.position.set(-10, 10, -10);
            scene.add(dirLight2);

            // Grid
            const gridHelper = new THREE.GridHelper(200, 40, 0x444444, 0x222222);
            scene.add(gridHelper);

            // Axes
            const axesHelper = new THREE.AxesHelper(10);
            scene.add(axesHelper);

            window.addEventListener('resize', onWindowResize);
        }

        window.loadBlocks = function () {
            const input = document.getElementById('jsonInput').value.trim();
            const status = document.getElementById('status');

            if (!input) {
                status.innerText = "⚠️ Please paste JSON data first";
                status.style.background = "#662200";
                return;
            }

            try {
                const data = JSON.parse(input);

                // Support both formats: array of blocks or voxel data object
                let blocks = [];
                if (Array.isArray(data)) {
                    blocks = data;
                } else if (data.voxels) {
                    blocks = data.voxels;
                } else {
                    throw new Error("Invalid format: expected array or object with 'voxels' property");
                }

                status.innerText = `✅ Loaded ${blocks.length} voxels`;
                status.style.background = "#004400";
                renderBlocks(blocks);
            } catch (e) {
                status.innerText = `❌ Error: ${e.message}`;
                status.style.background = "#660000";
            }
        };

        function renderBlocks(blocks) {
            if (instancedMesh) {
                scene.remove(instancedMesh);
                instancedMesh.geometry.dispose();
                instancedMesh.material.dispose();
            }

            const geometry = new THREE.BoxGeometry(1, 1, 1);
            const material = new THREE.MeshLambertMaterial({
                vertexColors: true,
                wireframe: wireframe
            });

            instancedMesh = new THREE.InstancedMesh(geometry, material, blocks.length);
            instancedMesh.instanceMatrix.setUsage(THREE.DynamicDrawUsage);

            const dummy = new THREE.Object3D();
            const color = new THREE.Color();

            // Calculate center
            let minX = Infinity, minY = Infinity, minZ = Infinity;
            let maxX = -Infinity, maxY = -Infinity, maxZ = -Infinity;

            for (let i = 0; i < blocks.length; i++) {
                const b = blocks[i];
                const x = b.x !== undefined ? b.x : (b.wx || 0);
                const y = b.y !== undefined ? b.y : (b.wy || 0);
                const z = b.z !== undefined ? b.z : (b.wz || 0);

                if (x < minX) minX = x;
                if (y < minY) minY = y;
                if (z < minZ) minZ = z;
                if (x > maxX) maxX = x;
                if (y > maxY) maxY = y;
                if (z > maxZ) maxZ = z;

                dummy.position.set(x, y, z);
                dummy.updateMatrix();
                instancedMesh.setMatrixAt(i, dummy.matrix);

                // Set color from voxel data
                if (b.r !== undefined && b.g !== undefined && b.b !== undefined) {
                    color.setRGB(b.r / 255, b.g / 255, b.b / 255);
                } else {
                    color.setHex(0x44ff44); // Default green
                }
                instancedMesh.setColorAt(i, color);
            }

            instancedMesh.instanceMatrix.needsUpdate = true;
            if (instancedMesh.instanceColor) {
                instancedMesh.instanceColor.needsUpdate = true;
            }

            scene.add(instancedMesh);

            // Center camera on the model
            const cx = (minX + maxX) / 2;
            const cy = (minY + maxY) / 2;
            const cz = (minZ + maxZ) / 2;

            const size = Math.max(maxX - minX, maxY - minY, maxZ - minZ);
            const distance = size * 1.5;

            controls.target.set(cx, cy, cz);
            camera.position.set(cx + distance, cy + distance * 0.6, cz + distance);
        }

        window.resetCamera = function () {
            if (instancedMesh) {
                controls.reset();
            }
        };

        window.toggleWireframe = function () {
            wireframe = !wireframe;
            if (instancedMesh) {
                instancedMesh.material.wireframe = wireframe;
            }
        };

        function onWindowResize() {
            camera.aspect = window.innerWidth / window.innerHeight;
            camera.updateProjectionMatrix();
            renderer.setSize(window.innerWidth, window.innerHeight);
        }

        function animate() {
            requestAnimationFrame(animate);
            controls.update();
            renderer.render(scene, camera);
        }
    </script>
</body>

</html>