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import * as THREE from 'three/build/three.module';
import STLLoaderClass from 'three-stl-loader';
import OrbitControlsClass from 'three-orbit-controls';
import MeshObject from './mesh_object';
const STLLoader = STLLoaderClass(THREE);
const OrbitControls = OrbitControlsClass(THREE);
export default class Renderer {
constructor(container) {
this.renderWrapper = this.render.bind(this);
this.objects = [];
this.container = container;
this.width = this.container.offsetWidth;
this.height = 500;
this.loader = new STLLoader();
this.fov = 45;
this.camera = new THREE.PerspectiveCamera(
this.fov,
this.width / this.height,
1,
1000,
);
this.scene = new THREE.Scene();
this.scene.add(this.camera);
// Set up the viewer
this.setupRenderer();
this.setupGrid();
this.setupLight();
// Set up OrbitControls
this.controls = new OrbitControls(
this.camera,
this.renderer.domElement,
);
this.controls.minDistance = 5;
this.controls.maxDistance = 30;
this.controls.enableKeys = false;
this.loadFile();
}
setupRenderer() {
this.renderer = new THREE.WebGLRenderer({
antialias: true,
});
this.renderer.setClearColor(0xFFFFFF);
this.renderer.setPixelRatio(window.devicePixelRatio);
this.renderer.setSize(
this.width,
this.height,
);
}
setupLight() {
// Point light illuminates the object
const pointLight = new THREE.PointLight(
0xFFFFFF,
2,
0,
);
pointLight.castShadow = true;
this.camera.add(pointLight);
// Ambient light illuminates the scene
const ambientLight = new THREE.AmbientLight(
0xFFFFFF,
1,
);
this.scene.add(ambientLight);
}
setupGrid() {
this.grid = new THREE.GridHelper(
20,
20,
0x000000,
0x000000,
);
this.scene.add(this.grid);
}
loadFile() {
this.loader.load(this.container.dataset.endpoint, (geo) => {
const obj = new MeshObject(geo);
this.objects.push(obj);
this.scene.add(obj);
this.start();
this.setDefaultCameraPosition();
});
}
start() {
// Empty the container first
this.container.innerHTML = '';
// Add to DOM
this.container.appendChild(this.renderer.domElement);
// Make controls visible
this.container.parentNode.classList.remove('is-stl-loading');
this.render();
}
render() {
this.renderer.render(
this.scene,
this.camera,
);
requestAnimationFrame(this.renderWrapper);
}
changeObjectMaterials(type) {
this.objects.forEach((obj) => {
obj.changeMaterial(type);
});
}
setDefaultCameraPosition() {
const obj = this.objects[0];
const radius = (obj.geometry.boundingSphere.radius / 1.5);
const dist = radius / (Math.sin((this.fov * (Math.PI / 180)) / 2));
this.camera.position.set(
0,
dist + 1,
dist,
);
this.camera.lookAt(this.grid);
this.controls.update();
}
}
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