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MapLibre GL JS - Modified Three.js model example (add-3d-model) with Shadow
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| <!DOCTYPE html> | |
| <html lang="en"> | |
| <head> | |
| <title>Add a 3D model with three.js</title> | |
| <meta property="og:description" content="Use a custom style layer with three.js to add a 3D model to the map." /> | |
| <meta charset='utf-8'> | |
| <meta name="viewport" content="width=device-width, initial-scale=1"> | |
| <link rel='stylesheet' href='../../dist/maplibre-gl.css' /> | |
| <script src='../../dist/maplibre-gl-dev.js'></script> | |
| <style> | |
| body { | |
| margin: 0; | |
| padding: 0; | |
| } | |
| html, | |
| body, | |
| #map { | |
| height: 100%; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <script src="https://unpkg.com/[email protected]/build/three.min.js"></script> | |
| <script src="https://unpkg.com/[email protected]/examples/js/loaders/GLTFLoader.js"></script> | |
| <div id="map"></div> | |
| <script> | |
| const map = (window.map = new maplibregl.Map({ | |
| container: 'map', | |
| style: | |
| 'https://api.maptiler.com/maps/basic/style.json?key=get_your_own_OpIi9ZULNHzrESv6T2vL', | |
| zoom: 18, | |
| center: [148.9819, -35.3981], | |
| pitch: 60, | |
| antialias: true | |
| })); | |
| const modelOrigin = [148.9819, -35.39847]; | |
| const modelAltitude = 0; | |
| const modelRotate = [Math.PI / 2, 0, 0]; | |
| const modelAsMercatorCoordinate = maplibregl.MercatorCoordinate.fromLngLat( | |
| modelOrigin, | |
| modelAltitude | |
| ); | |
| const modelTransform = { | |
| translateX: modelAsMercatorCoordinate.x, | |
| translateY: modelAsMercatorCoordinate.y, | |
| translateZ: modelAsMercatorCoordinate.z, | |
| rotateX: modelRotate[0], | |
| rotateY: modelRotate[1], | |
| rotateZ: modelRotate[2], | |
| scale: modelAsMercatorCoordinate.meterInMercatorCoordinateUnits() | |
| }; | |
| const THREE = window.THREE; | |
| const customLayer = { | |
| id: '3d-model', | |
| type: 'custom', | |
| renderingMode: '3d', | |
| onAdd(map, gl) { | |
| this.camera = new THREE.Camera(); | |
| this.scene = new THREE.Scene(); | |
| const directionalLight = new THREE.DirectionalLight(0xffffff, 1); | |
| directionalLight.position.set(100, 100, 100); | |
| directionalLight.castShadow = true; | |
| this.scene.add(directionalLight); | |
| const directionalLight2 = new THREE.DirectionalLight(0xffffff, 1); | |
| directionalLight2.position.set(-100, 100, 100); | |
| directionalLight2.castShadow = true; | |
| this.scene.add(directionalLight2); | |
| directionalLight.shadow.camera.near = 0.1; | |
| directionalLight.shadow.camera.far = 2000; | |
| directionalLight.shadow.camera.left = -500; | |
| directionalLight.shadow.camera.right = 500; | |
| directionalLight.shadow.camera.top = 500; | |
| directionalLight.shadow.camera.bottom = -500; | |
| directionalLight2.shadow.camera.near = 0.1; | |
| directionalLight2.shadow.camera.far = 2000; | |
| directionalLight2.shadow.camera.left = -500; | |
| directionalLight2.shadow.camera.right = 500; | |
| directionalLight2.shadow.camera.top = 500; | |
| directionalLight2.shadow.camera.bottom = -500; | |
| directionalLight.shadow.mapSize.width = 4096; | |
| directionalLight.shadow.mapSize.height = 4096; | |
| directionalLight2.shadow.mapSize.width = 4096; | |
| directionalLight2.shadow.mapSize.height = 4096; | |
| const groundGeometry = new THREE.PlaneGeometry(1000, 1000); | |
| const groundMaterial = new THREE.ShadowMaterial({ opacity: 0.5 }); | |
| const ground = new THREE.Mesh(groundGeometry, groundMaterial); | |
| ground.rotation.x = -Math.PI / 2; | |
| ground.position.y = modelAsMercatorCoordinate.z; | |
| ground.receiveShadow = true; | |
| this.scene.add(ground); | |
| const loader = new THREE.GLTFLoader(); | |
| loader.load( | |
| 'https://maplibre.org/maplibre-gl-js/docs/assets/34M_17/34M_17.gltf', | |
| (gltf) => { | |
| gltf.scene.traverse(function (node) { | |
| if (node.isMesh || node.isLight) { | |
| node.castShadow = true; | |
| node.receiveShadow = true; | |
| } | |
| }); | |
| this.scene.add(gltf.scene); | |
| } | |
| ); | |
| this.map = map; | |
| this.renderer = new THREE.WebGLRenderer({ | |
| canvas: map.getCanvas(), | |
| context: gl, | |
| antialias: true | |
| }); | |
| this.renderer.shadowMap.enabled = true; | |
| this.renderer.shadowMap.type = THREE.PCFSoftShadowMap; | |
| this.renderer.autoClear = false; | |
| }, | |
| render(gl, args) { | |
| const rotationX = new THREE.Matrix4().makeRotationAxis( | |
| new THREE.Vector3(1, 0, 0), | |
| modelTransform.rotateX | |
| ); | |
| const rotationY = new THREE.Matrix4().makeRotationAxis( | |
| new THREE.Vector3(0, 1, 0), | |
| modelTransform.rotateY | |
| ); | |
| const rotationZ = new THREE.Matrix4().makeRotationAxis( | |
| new THREE.Vector3(0, 0, 1), | |
| modelTransform.rotateZ | |
| ); | |
| const m = new THREE.Matrix4().fromArray(args.defaultProjectionData.mainMatrix); | |
| const l = new THREE.Matrix4() | |
| .makeTranslation( | |
| modelTransform.translateX, | |
| modelTransform.translateY, | |
| modelTransform.translateZ | |
| ) | |
| .scale( | |
| new THREE.Vector3( | |
| modelTransform.scale, | |
| -modelTransform.scale, | |
| modelTransform.scale | |
| ) | |
| ) | |
| .multiply(rotationX) | |
| .multiply(rotationY) | |
| .multiply(rotationZ); | |
| this.camera.projectionMatrix = m.multiply(l); | |
| this.renderer.resetState(); | |
| this.renderer.render(this.scene, this.camera); | |
| this.map.triggerRepaint(); | |
| } | |
| }; | |
| map.on('style.load', () => { | |
| map.addLayer(customLayer); | |
| }); | |
| </script> | |
| </body> | |
| </html> |
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