<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Three.js Lighting and Camera Control</title>
    <style>
        /* Basic styling for the body, including margin, font, background color, and preventing overflow */
        body {
            margin: 0;
            font-family: Arial, sans-serif;
            background-color: #222;
            color: white;
            overflow: hidden;
        }

/* Styling for the modal to center the canvas on the screen */
        .modal {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0, 0, 0, 0.9);
            display: flex;
            justify-content: center;
            align-items: center;
        }

/* Make the canvas fill the entire window */
        #threeCanvas {
            width: 100%;
            height: 100%;
        }

/* Styling for the sliders container at the bottom */
        .slider-container {
            position: absolute;
            bottom: 10px;
            width: 100%;
            display: flex;
            justify-content: center;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap; /* Allow wrapping of sliders if necessary */
            padding: 0 20px;
        }

/* Reduced width for sliders */
        .slider {
            width: 160px; /* Reduced width of the sliders */
            margin: 5px;
        }

/* Label styling for sliders */
        label {
            color: white;
        }

/* Media query for smaller screens */
        @media (max-width: 600px) {
            /* Further reduce slider size on smaller screens */
            .slider {
                width: 120px; 
            }
            /* Reduce the gap between sliders */
            .slider-container {
                gap: 5px;
            }
        }
    </style>
</head>
<body>
    
    <div class="modal">
        <div id="threeCanvas"></div>
    </div>

<div class="slider-container">
        
        <div>
            <label for="intensitySlider">Light Intensity</label>
            <input type="range" id="intensitySlider" class="slider" min="0" max="2" step="0.01" value="0.8">
        </div>
        <div>
            <label for="directionSliderX">Light Direction X</label>
            <input type="range" id="directionSliderX" class="slider" min="-5" max="5" step="0.1" value="5">
        </div>
        <div>
            <label for="directionSliderY">Light Direction Y</label>
            <input type="range" id="directionSliderY" class="slider" min="-5" max="5" step="0.1" value="5">
        </div>
        <div>
            <label for="directionSliderZ">Light Direction Z</label>
            <input type="range" id="directionSliderZ" class="slider" min="-5" max="5" step="0.1" value="5">
        </div>
        
        <div>
            <label for="cameraPosX">Camera Position X</label>
            <input type="range" id="cameraPosX" class="slider" min="-10" max="10" step="0.1" value="5">
        </div>
        <div>
            <label for="cameraPosY">Camera Position Y</label>
            <input type="range" id="cameraPosY" class="slider" min="-10" max="10" step="0.1" value="5">
        </div>
        <div>
            <label for="cameraPosZ">Camera Position Z</label>
            <input type="range" id="cameraPosZ" class="slider" min="1" max="20" step="0.1" value="5">
        </div>
        <div>
            <label for="cameraRotX">Camera Rotation X</label>
            <input type="range" id="cameraRotX" class="slider" min="-1" max="1" step="0.01" value="0">
        </div>
        <div>
            <label for="cameraRotY">Camera Rotation Y</label>
            <input type="range" id="cameraRotY" class="slider" min="-1" max="1" step="0.01" value="0">
        </div>
        <div>
            <label for="cameraRotZ">Camera Rotation Z</label>
            <input type="range" id="cameraRotZ" class="slider" min="-1" max="1" step="0.01" value="0">
        </div>
    </div>

<script src="https://cdnjs.cloudflare.com/ajax/libs/three.js/r128/three.min.js"></script>
    <script>
        // Create a container for the canvas
        const canvasContainer = document.getElementById('threeCanvas');

// Create the scene in Three.js
        const scene = new THREE.Scene();

// Set up the camera for the scene
        const camera = new THREE.PerspectiveCamera(
            75, // Field of view (FOV)
            window.innerWidth / window.innerHeight, // Aspect ratio
            0.1, // Near plane
            1000 // Far plane
        );
        camera.position.set(0, 0, 5);

// Set up the WebGL renderer
        const renderer = new THREE.WebGLRenderer();
        renderer.setSize(window.innerWidth, window.innerHeight);
        canvasContainer.appendChild(renderer.domElement);

// Add ambient light to the scene
        const ambientLight = new THREE.AmbientLight(0xffffff, 0.3);
        scene.add(ambientLight);

// Add directional light to the scene
        const directionalLight = new THREE.DirectionalLight(0xffffff, 0.8);
        directionalLight.position.set(5, 5, 5); // Initial light position
        directionalLight.castShadow = true; // Enable shadow for the light
        scene.add(directionalLight);

// Create a sphere geometry and material for visualization
        const geometry = new THREE.SphereGeometry(1, 64, 64);
        const material = new THREE.MeshStandardMaterial({
            color: 0xadd8e6, // Light blue color
            wireframe: false // Do not display in wireframe
        });
        const sphere = new THREE.Mesh(geometry, material);
        scene.add(sphere);

sphere.position.set(0, 0, 0); // Set the sphere to the center of the scene

// Animation function to rotate the sphere and render the scene
        function animate() {
            requestAnimationFrame(animate);
            sphere.rotation.x += 0.02;
            sphere.rotation.y += 0.01;
            renderer.render(scene, camera);
        }

// Start the animation loop
        animate();

// Handle window resizing to adjust canvas size and camera aspect ratio
        window.addEventListener('resize', () => {
            const width = window.innerWidth;
            const height = window.innerHeight;
            renderer.setSize(width, height);
            camera.aspect = width / height;
            camera.updateProjectionMatrix();
        });

// Calculate initial slider values based on the position of the sphere and camera
        const shapePosition = sphere.position;
        const cameraPosition = camera.position;

const calculateSliderValue = (position, cameraPos) => {
            return cameraPos - position;
        };

// Initialize slider elements
        const intensitySlider = document.getElementById('intensitySlider');
        const directionSliderX = document.getElementById('directionSliderX');
        const directionSliderY = document.getElementById('directionSliderY');
        const directionSliderZ = document.getElementById('directionSliderZ');
        const cameraPosX = document.getElementById('cameraPosX');
        const cameraPosY = document.getElementById('cameraPosY');
        const cameraPosZ = document.getElementById('cameraPosZ');
        const cameraRotX = document.getElementById('cameraRotX');
        const cameraRotY = document.getElementById('cameraRotY');
        const cameraRotZ = document.getElementById('cameraRotZ');

// Set initial slider values based on sphere and camera position
        cameraPosX.value = calculateSliderValue(shapePosition.x, cameraPosition.x);
        cameraPosY.value = calculateSliderValue(shapePosition.y, cameraPosition.y);
        cameraPosZ.value = calculateSliderValue(shapePosition.z, cameraPosition.z);

// Add event listeners for slider changes to adjust light and camera properties
        intensitySlider.addEventListener('input', (event) => {
            directionalLight.intensity = event.target.value;
        });

directionSliderX.addEventListener('input', (event) => {
            directionalLight.position.x = event.target.value;
        });

directionSliderY.addEventListener('input', (event) => {
            directionalLight.position.y = event.target.value;
        });

directionSliderZ.addEventListener('input', (event) => {
            directionalLight.position.z = event.target.value;
        });

cameraPosX.addEventListener('input', (event) => {
            camera.position.x = event.target.value;
        });

cameraPosY.addEventListener('input', (event) => {
            camera.position.y = event.target.value;
        });

cameraPosZ.addEventListener('input', (event) => {
            camera.position.z = event.target.value;
        });

cameraRotX.addEventListener('input', (event) => {
            camera.rotation.x = event.target.value;
        });

cameraRotY.addEventListener('input', (event) => {
            camera.rotation.y = event.target.value;
        });

cameraRotZ.addEventListener('input', (event) => {
            camera.rotation.z = event.target.value;
        });
    </script>
</body>
</html>

About THIS CODE (CANVASOR.NET):