js/threejs-renderer.js

/**
 * 🌿 Ivy's Creative Studio
 * Tab 6: Three.js 3D Renderer
 *
 * Interactive 3D scenes with Three.js
 * Now with 8 scenes, 8 palettes, 6 materials, and effects!
 */

class ThreeJSRenderer {
    constructor() {
        this.scene = null;
        this.camera = null;
        this.renderer = null;
        this.controls = null;
        this.objects = [];
        this.animationId = null;
        this.isActive = false;
        this.clock = new THREE.Clock();

        // Parameters
        this.params = {
            sceneType: "cubes",
            materialType: "standard",
            palette: "rainbow",
            objectCount: 50,
            speed: 1.0,
            scale: 1.0,
            wireframe: false,
            autoRotate: true,
            shadows: false,
            bloom: false
        };
    }

    init(canvas) {
        this.canvas = canvas;

        // Create scene
        this.scene = new THREE.Scene();
        this.scene.background = new THREE.Color(0x0a0a0f);
        this.scene.fog = new THREE.Fog(0x0a0a0f, 10, 50);

        // Use fallback dimensions if canvas is hidden (will be resized properly on start())
        const width = canvas.clientWidth || 800;
        const height = canvas.clientHeight || 500;

        // Create camera
        this.camera = new THREE.PerspectiveCamera(75, width / height, 0.1, 1000);
        this.camera.position.set(0, 5, 15);

        // Create renderer
        this.renderer = new THREE.WebGLRenderer({
            canvas: canvas,
            antialias: true,
            alpha: true
        });
        this.renderer.setSize(width, height);
        this.renderer.setPixelRatio(Math.min(window.devicePixelRatio, 2));

        // Add lights
        this.setupLights();

        // Add controls
        this.controls = new THREE.OrbitControls(this.camera, canvas);
        this.controls.enableDamping = true;
        this.controls.dampingFactor = 0.05;
        this.controls.autoRotate = this.params.autoRotate;
        this.controls.autoRotateSpeed = 0.5;

        // Create initial scene
        this.createScene();

        // Handle resize
        this.handleResize = this.handleResize.bind(this);
        window.addEventListener("resize", this.handleResize);
    }

    setupLights() {
        // Ambient light
        const ambient = new THREE.AmbientLight(0x404040, 0.5);
        this.scene.add(ambient);

        // Directional light
        const directional = new THREE.DirectionalLight(0xffffff, 1);
        directional.position.set(5, 10, 7);
        this.scene.add(directional);

        // Point lights for color
        const pointLight1 = new THREE.PointLight(0x6366f1, 1, 50);
        pointLight1.position.set(-10, 5, 0);
        this.scene.add(pointLight1);

        const pointLight2 = new THREE.PointLight(0x8b5cf6, 1, 50);
        pointLight2.position.set(10, 5, 0);
        this.scene.add(pointLight2);

        this.lights = { ambient, directional, pointLight1, pointLight2 };
    }

    clearScene() {
        // Remove all objects except lights and camera
        for (const obj of this.objects) {
            this.scene.remove(obj);
            if (obj.geometry) obj.geometry.dispose();
            if (obj.material) {
                if (Array.isArray(obj.material)) {
                    obj.material.forEach(m => m.dispose());
                } else {
                    obj.material.dispose();
                }
            }
        }
        this.objects = [];
    }

    createScene() {
        this.clearScene();

        switch (this.params.sceneType) {
            case "cubes":
                this.createCubesScene();
                break;
            case "particles":
                this.createParticlesScene();
                break;
            case "terrain":
                this.createTerrainScene();
                break;
            case "galaxy":
                this.createGalaxyScene();
                break;
            case "ivy":
                this.createIvyScene();
                break;
            case "torus":
                this.createTorusScene();
                break;
            case "crystals":
                this.createCrystalsScene();
                break;
            case "ocean":
                this.createOceanScene();
                break;
        }
    }

    getColor(index, total) {
        const t = index / total;

        switch (this.params.palette) {
            case "ivy":
                return new THREE.Color().setHSL(0.35 + t * 0.1, 0.7, 0.4 + t * 0.2);
            case "rainbow":
                return new THREE.Color().setHSL(t, 0.8, 0.5);
            case "neon":
                const neonHues = [0.85, 0.15, 0.55, 0.75];
                return new THREE.Color().setHSL(neonHues[index % 4], 1.0, 0.5);
            case "fire":
                return new THREE.Color().setHSL(0.05 + t * 0.08, 1.0, 0.4 + t * 0.2);
            case "ocean":
                return new THREE.Color().setHSL(0.55 + t * 0.1, 0.7, 0.4 + t * 0.3);
            case "pastel":
                return new THREE.Color().setHSL(t, 0.5, 0.75);
            case "cosmic":
                return new THREE.Color().setHSL(0.7 + t * 0.2, 0.8, 0.3 + t * 0.4);
            case "monochrome":
                return new THREE.Color().setHSL(0.7, 0.0, 0.3 + t * 0.5);
            default:
                return new THREE.Color().setHSL(t, 0.8, 0.5);
        }
    }

    createMaterial(color) {
        const baseProps = {
            color: color,
            wireframe: this.params.wireframe
        };

        switch (this.params.materialType) {
            case "standard":
                return new THREE.MeshStandardMaterial({
                    ...baseProps,
                    metalness: 0.3,
                    roughness: 0.6
                });
            case "phong":
                return new THREE.MeshPhongMaterial({
                    ...baseProps,
                    shininess: 100,
                    specular: 0x444444
                });
            case "toon":
                return new THREE.MeshToonMaterial(baseProps);
            case "glass":
                return new THREE.MeshPhysicalMaterial({
                    ...baseProps,
                    metalness: 0.0,
                    roughness: 0.0,
                    transmission: 0.9,
                    thickness: 0.5,
                    transparent: true,
                    opacity: 0.8
                });
            case "metal":
                return new THREE.MeshStandardMaterial({
                    ...baseProps,
                    metalness: 1.0,
                    roughness: 0.2
                });
            case "emissive":
                return new THREE.MeshStandardMaterial({
                    ...baseProps,
                    metalness: 0.0,
                    roughness: 0.5,
                    emissive: color,
                    emissiveIntensity: 0.5
                });
            default:
                return new THREE.MeshStandardMaterial(baseProps);
        }
    }

    createCubesScene() {
        const count = this.params.objectCount;
        const scale = this.params.scale;

        for (let i = 0; i < count; i++) {
            const size = (Math.random() * 1 + 0.5) * scale;
            const geometry = new THREE.BoxGeometry(size, size, size);
            const material = this.createMaterial(this.getColor(i, count));

            const cube = new THREE.Mesh(geometry, material);

            // Random position in sphere
            const radius = 8 + Math.random() * 8;
            const theta = Math.random() * Math.PI * 2;
            const phi = Math.random() * Math.PI;

            cube.position.set(radius * Math.sin(phi) * Math.cos(theta), radius * Math.cos(phi) - 2, radius * Math.sin(phi) * Math.sin(theta));

            cube.rotation.set(Math.random() * Math.PI, Math.random() * Math.PI, Math.random() * Math.PI);

            // Store animation data
            cube.userData = {
                rotationSpeed: {
                    x: (Math.random() - 0.5) * 0.02,
                    y: (Math.random() - 0.5) * 0.02,
                    z: (Math.random() - 0.5) * 0.02
                },
                floatOffset: Math.random() * Math.PI * 2,
                floatSpeed: Math.random() * 0.5 + 0.5,
                originalY: cube.position.y
            };

            if (this.params.shadows) {
                cube.castShadow = true;
                cube.receiveShadow = true;
            }

            this.scene.add(cube);
            this.objects.push(cube);
        }
    }

    createParticlesScene() {
        const count = this.params.objectCount * 100;
        const geometry = new THREE.BufferGeometry();

        const positions = new Float32Array(count * 3);
        const colors = new Float32Array(count * 3);

        for (let i = 0; i < count; i++) {
            const i3 = i * 3;

            // Spherical distribution
            const radius = 5 + Math.random() * 10;
            const theta = Math.random() * Math.PI * 2;
            const phi = Math.random() * Math.PI;

            positions[i3] = radius * Math.sin(phi) * Math.cos(theta);
            positions[i3 + 1] = radius * Math.cos(phi);
            positions[i3 + 2] = radius * Math.sin(phi) * Math.sin(theta);

            const color = this.getColor(i, count);
            colors[i3] = color.r;
            colors[i3 + 1] = color.g;
            colors[i3 + 2] = color.b;
        }

        geometry.setAttribute("position", new THREE.BufferAttribute(positions, 3));
        geometry.setAttribute("color", new THREE.BufferAttribute(colors, 3));

        const material = new THREE.PointsMaterial({
            size: 0.1,
            vertexColors: true,
            transparent: true,
            opacity: 0.8,
            blending: THREE.AdditiveBlending
        });

        const particles = new THREE.Points(geometry, material);
        particles.userData = { isParticles: true };

        this.scene.add(particles);
        this.objects.push(particles);
    }

    createTerrainScene() {
        const size = 30;
        const segments = this.params.objectCount;

        const geometry = new THREE.PlaneGeometry(size, size, segments, segments);
        const positions = geometry.attributes.position;

        // Generate terrain heights using noise
        for (let i = 0; i < positions.count; i++) {
            const x = positions.getX(i);
            const y = positions.getY(i);

            // Simple noise-like height
            let height = 0;
            height += Math.sin(x * 0.5) * Math.cos(y * 0.5) * 2;
            height += Math.sin(x * 0.2 + y * 0.3) * 1.5;
            height += Math.random() * 0.2;

            positions.setZ(i, height);
        }

        geometry.computeVertexNormals();

        const material = new THREE.MeshStandardMaterial({
            color: this.getColor(0, 1),
            wireframe: this.params.wireframe,
            side: THREE.DoubleSide,
            flatShading: true
        });

        const terrain = new THREE.Mesh(geometry, material);
        terrain.rotation.x = -Math.PI / 2;
        terrain.position.y = -3;
        terrain.userData = { isTerrain: true };

        this.scene.add(terrain);
        this.objects.push(terrain);

        // Add water plane
        const waterGeometry = new THREE.PlaneGeometry(size, size);
        const waterMaterial = new THREE.MeshStandardMaterial({
            color: 0x1e90ff,
            transparent: true,
            opacity: 0.6,
            metalness: 0.8,
            roughness: 0.2
        });

        const water = new THREE.Mesh(waterGeometry, waterMaterial);
        water.rotation.x = -Math.PI / 2;
        water.position.y = -2;
        water.userData = { isWater: true };

        this.scene.add(water);
        this.objects.push(water);
    }

    createGalaxyScene() {
        const count = this.params.objectCount * 200;
        const branches = 5;
        const spin = 2;
        const radius = 15;

        const geometry = new THREE.BufferGeometry();
        const positions = new Float32Array(count * 3);
        const colors = new Float32Array(count * 3);

        for (let i = 0; i < count; i++) {
            const i3 = i * 3;

            const r = Math.random() * radius;
            const branchAngle = ((i % branches) / branches) * Math.PI * 2;
            const spinAngle = r * spin;

            // Add randomness
            const randomX = (Math.random() - 0.5) * (radius - r) * 0.3;
            const randomY = (Math.random() - 0.5) * (radius - r) * 0.1;
            const randomZ = (Math.random() - 0.5) * (radius - r) * 0.3;

            positions[i3] = Math.cos(branchAngle + spinAngle) * r + randomX;
            positions[i3 + 1] = randomY;
            positions[i3 + 2] = Math.sin(branchAngle + spinAngle) * r + randomZ;

            // Color gradient from center (white) to edge (colored)
            const mixRatio = r / radius;
            const branchColor = this.getColor(i % branches, branches);

            colors[i3] = 1 - mixRatio * (1 - branchColor.r);
            colors[i3 + 1] = 1 - mixRatio * (1 - branchColor.g);
            colors[i3 + 2] = 1 - mixRatio * (1 - branchColor.b);
        }

        geometry.setAttribute("position", new THREE.BufferAttribute(positions, 3));
        geometry.setAttribute("color", new THREE.BufferAttribute(colors, 3));

        const material = new THREE.PointsMaterial({
            size: 0.05,
            vertexColors: true,
            transparent: true,
            blending: THREE.AdditiveBlending,
            depthWrite: false
        });

        const galaxy = new THREE.Points(geometry, material);
        galaxy.userData = { isGalaxy: true };

        this.scene.add(galaxy);
        this.objects.push(galaxy);

        // Center glow
        const glowGeometry = new THREE.SphereGeometry(0.5, 32, 32);
        const glowMaterial = new THREE.MeshBasicMaterial({
            color: 0xffffff,
            transparent: true,
            opacity: 0.8
        });
        const glow = new THREE.Mesh(glowGeometry, glowMaterial);
        this.scene.add(glow);
        this.objects.push(glow);
    }

    // 🌿 IVY SCENE - Organic vines in 3D!
    createIvyScene() {
        const ivyGreen = new THREE.Color(0x22c55e);
        const darkGreen = new THREE.Color(0x166534);
        const leafGreen = new THREE.Color(0x4ade80);

        // Create multiple vine spirals
        const numVines = Math.min(this.params.objectCount, 8);

        for (let v = 0; v < numVines; v++) {
            const vineAngle = (v / numVines) * Math.PI * 2;
            const vineRadius = 3 + Math.random() * 2;

            // Vine stem - spiral tube
            const curve = new THREE.CatmullRomCurve3([]);
            const segments = 50;

            for (let i = 0; i < segments; i++) {
                const t = i / segments;
                const y = t * 15 - 7;
                const spiralAngle = vineAngle + t * Math.PI * 4;
                const r = vineRadius * (1 - t * 0.3);

                curve.points.push(new THREE.Vector3(Math.cos(spiralAngle) * r, y, Math.sin(spiralAngle) * r));
            }

            const tubeGeometry = new THREE.TubeGeometry(curve, 64, 0.1, 8, false);
            const tubeMaterial = new THREE.MeshStandardMaterial({
                color: darkGreen,
                roughness: 0.8,
                metalness: 0.1
            });
            const vine = new THREE.Mesh(tubeGeometry, tubeMaterial);
            vine.userData = { isVine: true, vineIndex: v };
            this.scene.add(vine);
            this.objects.push(vine);

            // Add leaves along the vine
            const numLeaves = 15 + Math.floor(Math.random() * 10);
            for (let l = 0; l < numLeaves; l++) {
                const t = (l / numLeaves) * 0.9 + 0.05;
                const point = curve.getPoint(t);

                // Leaf shape (heart-like)
                const leafShape = new THREE.Shape();
                const leafSize = 0.3 + Math.random() * 0.2;

                leafShape.moveTo(0, 0);
                leafShape.bezierCurveTo(leafSize * 0.5, leafSize * 0.3, leafSize * 0.8, leafSize * 0.8, 0, leafSize * 1.2);
                leafShape.bezierCurveTo(-leafSize * 0.8, leafSize * 0.8, -leafSize * 0.5, leafSize * 0.3, 0, 0);

                const leafGeometry = new THREE.ShapeGeometry(leafShape);
                const leafMaterial = new THREE.MeshStandardMaterial({
                    color: leafGreen.clone().lerp(ivyGreen, Math.random()),
                    side: THREE.DoubleSide,
                    roughness: 0.6,
                    metalness: 0.0
                });

                const leaf = new THREE.Mesh(leafGeometry, leafMaterial);
                leaf.position.copy(point);

                // Random rotation
                leaf.rotation.x = Math.random() * Math.PI;
                leaf.rotation.y = Math.random() * Math.PI * 2;
                leaf.rotation.z = Math.random() * 0.5;

                leaf.userData = { isLeaf: true, initialRotation: leaf.rotation.clone() };
                this.scene.add(leaf);
                this.objects.push(leaf);
            }
        }

        // Add some floating particles (pollen/sparkles)
        const particleCount = 500;
        const particleGeometry = new THREE.BufferGeometry();
        const positions = new Float32Array(particleCount * 3);

        for (let i = 0; i < particleCount; i++) {
            positions[i * 3] = (Math.random() - 0.5) * 20;
            positions[i * 3 + 1] = (Math.random() - 0.5) * 20;
            positions[i * 3 + 2] = (Math.random() - 0.5) * 20;
        }

        particleGeometry.setAttribute("position", new THREE.BufferAttribute(positions, 3));

        const particleMaterial = new THREE.PointsMaterial({
            size: 0.05,
            color: 0xffffff,
            transparent: true,
            opacity: 0.6,
            blending: THREE.AdditiveBlending
        });

        const particles = new THREE.Points(particleGeometry, particleMaterial);
        particles.userData = { isParticles: true };
        this.scene.add(particles);
        this.objects.push(particles);
    }

    start() {
        this.isActive = true;
        this.canvas.classList.remove("hidden");

        // Wait for the canvas to be visible and have dimensions before resizing
        // Double RAF ensures the browser has completed layout calculations
        requestAnimationFrame(() => {
            requestAnimationFrame(() => {
                this.handleResize();
                this.animate();
            });
        });
    }

    stop() {
        this.isActive = false;
        this.canvas.classList.add("hidden");
        if (this.animationId) {
            cancelAnimationFrame(this.animationId);
            this.animationId = null;
        }
    }

    reset() {
        this.camera.position.set(0, 5, 15);
        this.camera.lookAt(0, 0, 0);
        this.controls.reset();
    }

    setSceneType(type) {
        this.params.sceneType = type;
        this.createScene();
    }

    setMaterialType(type) {
        this.params.materialType = type;
        this.createScene();
    }

    setPalette(palette) {
        this.params.palette = palette;
        this.createScene();
    }

    setObjectCount(count) {
        this.params.objectCount = count;
        this.createScene();
    }

    setSpeed(speed) {
        this.params.speed = speed;
    }

    setScale(scale) {
        this.params.scale = scale;
        this.createScene();
    }

    setWireframe(enabled) {
        this.params.wireframe = enabled;
        for (const obj of this.objects) {
            if (obj.material && !obj.userData.isParticles && !obj.userData.isGalaxy) {
                obj.material.wireframe = enabled;
            }
        }
    }

    setAutoRotate(enabled) {
        this.params.autoRotate = enabled;
        if (this.controls) {
            this.controls.autoRotate = enabled;
        }
    }

    setShadows(enabled) {
        this.params.shadows = enabled;
        this.renderer.shadowMap.enabled = enabled;
        if (this.lights && this.lights.directional) {
            this.lights.directional.castShadow = enabled;
        }
        this.createScene();
    }

    setBloom(enabled) {
        this.params.bloom = enabled;
        // Note: Full bloom requires post-processing pass
        // For now we enhance emissive materials
        if (enabled) {
            this.scene.background = new THREE.Color(0x050508);
        } else {
            this.scene.background = new THREE.Color(0x0a0a0f);
        }
    }

    // === NEW SCENES ===

    createTorusScene() {
        const count = Math.floor(this.params.objectCount / 5);
        const scale = this.params.scale;

        for (let i = 0; i < count; i++) {
            const radius = (1 + Math.random() * 0.5) * scale;
            const tube = (0.3 + Math.random() * 0.2) * scale;
            const geometry = new THREE.TorusKnotGeometry(radius, tube, 100, 16, 2 + (i % 5), 3 + (i % 7));
            const material = this.createMaterial(this.getColor(i, count));

            const torus = new THREE.Mesh(geometry, material);

            const angle = (i / count) * Math.PI * 2;
            const distance = 5 + Math.random() * 5;
            torus.position.set(Math.cos(angle) * distance, (Math.random() - 0.5) * 6, Math.sin(angle) * distance);

            torus.userData = {
                rotationSpeed: {
                    x: (Math.random() - 0.5) * 0.01,
                    y: (Math.random() - 0.5) * 0.02,
                    z: (Math.random() - 0.5) * 0.01
                }
            };

            this.scene.add(torus);
            this.objects.push(torus);
        }
    }

    createCrystalsScene() {
        const count = this.params.objectCount;
        const scale = this.params.scale;

        for (let i = 0; i < count; i++) {
            // Create crystal-like geometry (octahedron or icosahedron)
            const geometryType =
                Math.random() > 0.5
                    ? new THREE.OctahedronGeometry((0.5 + Math.random()) * scale, 0)
                    : new THREE.IcosahedronGeometry((0.4 + Math.random() * 0.6) * scale, 0);

            const material = this.createMaterial(this.getColor(i, count));
            if (material.transparent === undefined) {
                material.transparent = true;
                material.opacity = 0.7 + Math.random() * 0.3;
            }

            const crystal = new THREE.Mesh(geometryType, material);

            // Cluster formation
            const cluster = Math.floor(i / 10);
            const clusterAngle = cluster * 0.8;
            const clusterRadius = 3 + cluster * 0.5;

            crystal.position.set(
                Math.cos(clusterAngle) * clusterRadius + (Math.random() - 0.5) * 3,
                (Math.random() - 0.5) * 8 - 2,
                Math.sin(clusterAngle) * clusterRadius + (Math.random() - 0.5) * 3
            );

            crystal.rotation.set(Math.random() * Math.PI, Math.random() * Math.PI, Math.random() * Math.PI);

            crystal.userData = {
                rotationSpeed: {
                    x: (Math.random() - 0.5) * 0.005,
                    y: (Math.random() - 0.5) * 0.01,
                    z: (Math.random() - 0.5) * 0.005
                },
                floatOffset: Math.random() * Math.PI * 2,
                floatSpeed: Math.random() * 0.3 + 0.2,
                originalY: crystal.position.y
            };

            this.scene.add(crystal);
            this.objects.push(crystal);
        }
    }

    createOceanScene() {
        const scale = this.params.scale;

        // Create water plane
        const waterGeometry = new THREE.PlaneGeometry(40 * scale, 40 * scale, 128, 128);
        const waterMaterial = new THREE.MeshPhongMaterial({
            color: this.getColor(0, 1),
            shininess: 100,
            transparent: true,
            opacity: 0.8,
            side: THREE.DoubleSide
        });

        const water = new THREE.Mesh(waterGeometry, waterMaterial);
        water.rotation.x = -Math.PI / 2;
        water.position.y = -2;
        water.userData = { isWater: true, geometry: waterGeometry };

        this.scene.add(water);
        this.objects.push(water);

        // Add floating objects
        const floatCount = Math.floor(this.params.objectCount / 3);
        for (let i = 0; i < floatCount; i++) {
            const size = (0.3 + Math.random() * 0.5) * scale;
            const geometry = new THREE.SphereGeometry(size, 16, 16);
            const material = this.createMaterial(this.getColor(i, floatCount));

            const sphere = new THREE.Mesh(geometry, material);
            sphere.position.set((Math.random() - 0.5) * 30, -1.5 + Math.random() * 0.5, (Math.random() - 0.5) * 30);

            sphere.userData = {
                floatOffset: Math.random() * Math.PI * 2,
                floatSpeed: Math.random() * 0.5 + 0.3,
                originalY: sphere.position.y,
                waveX: sphere.position.x,
                waveZ: sphere.position.z
            };

            this.scene.add(sphere);
            this.objects.push(sphere);
        }
    }

    handleResize() {
        if (!this.canvas || !this.isActive) return;

        // Get dimensions from parent container for proper sizing
        const container = this.canvas.parentElement;
        const width = container?.clientWidth || this.canvas.clientWidth || window.innerWidth;
        const height = container?.clientHeight || this.canvas.clientHeight || window.innerHeight;

        // Skip if dimensions are still zero
        if (width === 0 || height === 0) return;

        this.camera.aspect = width / height;
        this.camera.updateProjectionMatrix();

        // Set renderer size (this sets canvas width/height attributes)
        this.renderer.setSize(width, height, false);

        // Force canvas to fill container via CSS (Three.js setSize overrides this)
        this.canvas.style.width = "100%";
        this.canvas.style.height = "100%";
    }

    animate() {
        if (!this.isActive) return;

        this.animationId = requestAnimationFrame(() => this.animate());

        const delta = this.clock.getDelta();
        const elapsed = this.clock.getElapsedTime();
        const speed = this.params.speed;

        // Update controls
        this.controls.update();

        // Animate objects
        for (const obj of this.objects) {
            if (obj.userData.rotationSpeed) {
                obj.rotation.x += obj.userData.rotationSpeed.x * speed;
                obj.rotation.y += obj.userData.rotationSpeed.y * speed;
                obj.rotation.z += obj.userData.rotationSpeed.z * speed;

                // Float animation
                if (obj.userData.floatOffset !== undefined) {
                    obj.position.y = obj.userData.originalY + Math.sin(elapsed * obj.userData.floatSpeed * speed + obj.userData.floatOffset) * 0.5;
                }
            }

            if (obj.userData.isParticles || obj.userData.isGalaxy) {
                obj.rotation.y += 0.001 * speed;
            }

            if (obj.userData.isWater && obj.userData.geometry) {
                // Animate water waves
                const positions = obj.userData.geometry.attributes.position;
                for (let i = 0; i < positions.count; i++) {
                    const x = positions.getX(i);
                    const y = positions.getY(i);
                    const wave = Math.sin(x * 0.5 + elapsed * speed) * 0.3 + Math.sin(y * 0.3 + elapsed * speed * 0.7) * 0.2;
                    positions.setZ(i, wave);
                }
                positions.needsUpdate = true;
                obj.userData.geometry.computeVertexNormals();
            }

            // Floating objects on water
            if (obj.userData.waveX !== undefined) {
                const wx = obj.userData.waveX;
                const wz = obj.userData.waveZ;
                const wave = Math.sin(wx * 0.5 + elapsed * speed) * 0.3 + Math.sin(wz * 0.3 + elapsed * speed * 0.7) * 0.2;
                obj.position.y = obj.userData.originalY + wave;
                obj.rotation.x = Math.sin(elapsed * speed + obj.userData.floatOffset) * 0.1;
                obj.rotation.z = Math.cos(elapsed * speed * 0.7 + obj.userData.floatOffset) * 0.1;
            }

            // 🌿 Ivy leaf animation
            if (obj.userData.isLeaf) {
                const init = obj.userData.initialRotation;
                obj.rotation.x = init.x + Math.sin(elapsed * 0.5 * speed + obj.position.y) * 0.1;
                obj.rotation.y = init.y + Math.sin(elapsed * 0.3 * speed + obj.position.x) * 0.15;
                obj.rotation.z = init.z + Math.cos(elapsed * 0.4 * speed) * 0.1;
            }
        }

        // Animate point lights
        if (this.lights) {
            this.lights.pointLight1.position.x = Math.sin(elapsed * 0.5) * 10;
            this.lights.pointLight2.position.x = Math.cos(elapsed * 0.5) * 10;
        }

        this.renderer.render(this.scene, this.camera);
    }

    dispose() {
        this.stop();
        this.clearScene();

        if (this.renderer) {
            this.renderer.dispose();
        }

        window.removeEventListener("resize", this.handleResize);
    }
}

// Export
window.ThreeJSRenderer = ThreeJSRenderer;