three-stdlib
Version:
stand-alone library of threejs examples
287 lines (286 loc) • 10.9 kB
JavaScript
"use strict";
Object.defineProperty(exports, Symbol.toStringTag, { value: "Module" });
const THREE = require("three");
const fflate = require("fflate");
const LoaderUtils = require("../_polyfill/LoaderUtils.cjs");
class AMFLoader extends THREE.Loader {
constructor(manager) {
super(manager);
}
load(url, onLoad, onProgress, onError) {
const scope = this;
const loader = new THREE.FileLoader(scope.manager);
loader.setPath(scope.path);
loader.setResponseType("arraybuffer");
loader.setRequestHeader(scope.requestHeader);
loader.setWithCredentials(scope.withCredentials);
loader.load(
url,
function(text) {
try {
onLoad(scope.parse(text));
} catch (e) {
if (onError) {
onError(e);
} else {
console.error(e);
}
scope.manager.itemError(url);
}
},
onProgress,
onError
);
}
parse(data) {
function loadDocument(data2) {
let view = new DataView(data2);
const magic = String.fromCharCode(view.getUint8(0), view.getUint8(1));
if (magic === "PK") {
let zip = null;
let file = null;
console.log("THREE.AMFLoader: Loading Zip");
try {
zip = fflate.unzipSync(new Uint8Array(data2));
} catch (e) {
if (e instanceof ReferenceError) {
console.log("THREE.AMFLoader: fflate missing and file is compressed.");
return null;
}
}
for (file in zip) {
if (file.toLowerCase().substr(-4) === ".amf") {
break;
}
}
console.log("THREE.AMFLoader: Trying to load file asset: " + file);
view = new DataView(zip[file].buffer);
}
const fileText = LoaderUtils.decodeText(view);
const xmlData2 = new DOMParser().parseFromString(fileText, "application/xml");
if (xmlData2.documentElement.nodeName.toLowerCase() !== "amf") {
console.log("THREE.AMFLoader: Error loading AMF - no AMF document found.");
return null;
}
return xmlData2;
}
function loadDocumentScale(node) {
let scale = 1;
let unit = "millimeter";
if (node.documentElement.attributes.unit !== void 0) {
unit = node.documentElement.attributes.unit.value.toLowerCase();
}
const scaleUnits = {
millimeter: 1,
inch: 25.4,
feet: 304.8,
meter: 1e3,
micron: 1e-3
};
if (scaleUnits[unit] !== void 0) {
scale = scaleUnits[unit];
}
console.log("THREE.AMFLoader: Unit scale: " + scale);
return scale;
}
function loadMaterials(node) {
let matName = "AMF Material";
const matId = node.attributes.id.textContent;
let color = { r: 1, g: 1, b: 1, a: 1 };
let loadedMaterial = null;
for (let i2 = 0; i2 < node.childNodes.length; i2++) {
const matChildEl = node.childNodes[i2];
if (matChildEl.nodeName === "metadata" && matChildEl.attributes.type !== void 0) {
if (matChildEl.attributes.type.value === "name") {
matName = matChildEl.textContent;
}
} else if (matChildEl.nodeName === "color") {
color = loadColor(matChildEl);
}
}
loadedMaterial = new THREE.MeshPhongMaterial({
flatShading: true,
color: new THREE.Color(color.r, color.g, color.b),
name: matName
});
if (color.a !== 1) {
loadedMaterial.transparent = true;
loadedMaterial.opacity = color.a;
}
return { id: matId, material: loadedMaterial };
}
function loadColor(node) {
const color = { r: 1, g: 1, b: 1, a: 1 };
for (let i2 = 0; i2 < node.childNodes.length; i2++) {
const matColor = node.childNodes[i2];
if (matColor.nodeName === "r") {
color.r = matColor.textContent;
} else if (matColor.nodeName === "g") {
color.g = matColor.textContent;
} else if (matColor.nodeName === "b") {
color.b = matColor.textContent;
} else if (matColor.nodeName === "a") {
color.a = matColor.textContent;
}
}
return color;
}
function loadMeshVolume(node) {
const volume = { name: "", triangles: [], materialid: null };
let currVolumeNode = node.firstElementChild;
if (node.attributes.materialid !== void 0) {
volume.materialId = node.attributes.materialid.nodeValue;
}
while (currVolumeNode) {
if (currVolumeNode.nodeName === "metadata") {
if (currVolumeNode.attributes.type !== void 0) {
if (currVolumeNode.attributes.type.value === "name") {
volume.name = currVolumeNode.textContent;
}
}
} else if (currVolumeNode.nodeName === "triangle") {
const v1 = currVolumeNode.getElementsByTagName("v1")[0].textContent;
const v2 = currVolumeNode.getElementsByTagName("v2")[0].textContent;
const v3 = currVolumeNode.getElementsByTagName("v3")[0].textContent;
volume.triangles.push(v1, v2, v3);
}
currVolumeNode = currVolumeNode.nextElementSibling;
}
return volume;
}
function loadMeshVertices(node) {
const vertArray = [];
const normalArray = [];
let currVerticesNode = node.firstElementChild;
while (currVerticesNode) {
if (currVerticesNode.nodeName === "vertex") {
let vNode = currVerticesNode.firstElementChild;
while (vNode) {
if (vNode.nodeName === "coordinates") {
const x = vNode.getElementsByTagName("x")[0].textContent;
const y = vNode.getElementsByTagName("y")[0].textContent;
const z = vNode.getElementsByTagName("z")[0].textContent;
vertArray.push(x, y, z);
} else if (vNode.nodeName === "normal") {
const nx = vNode.getElementsByTagName("nx")[0].textContent;
const ny = vNode.getElementsByTagName("ny")[0].textContent;
const nz = vNode.getElementsByTagName("nz")[0].textContent;
normalArray.push(nx, ny, nz);
}
vNode = vNode.nextElementSibling;
}
}
currVerticesNode = currVerticesNode.nextElementSibling;
}
return { vertices: vertArray, normals: normalArray };
}
function loadObject(node) {
const objId = node.attributes.id.textContent;
const loadedObject = { name: "amfobject", meshes: [] };
let currColor = null;
let currObjNode = node.firstElementChild;
while (currObjNode) {
if (currObjNode.nodeName === "metadata") {
if (currObjNode.attributes.type !== void 0) {
if (currObjNode.attributes.type.value === "name") {
loadedObject.name = currObjNode.textContent;
}
}
} else if (currObjNode.nodeName === "color") {
currColor = loadColor(currObjNode);
} else if (currObjNode.nodeName === "mesh") {
let currMeshNode = currObjNode.firstElementChild;
const mesh = { vertices: [], normals: [], volumes: [], color: currColor };
while (currMeshNode) {
if (currMeshNode.nodeName === "vertices") {
const loadedVertices = loadMeshVertices(currMeshNode);
mesh.normals = mesh.normals.concat(loadedVertices.normals);
mesh.vertices = mesh.vertices.concat(loadedVertices.vertices);
} else if (currMeshNode.nodeName === "volume") {
mesh.volumes.push(loadMeshVolume(currMeshNode));
}
currMeshNode = currMeshNode.nextElementSibling;
}
loadedObject.meshes.push(mesh);
}
currObjNode = currObjNode.nextElementSibling;
}
return { id: objId, obj: loadedObject };
}
const xmlData = loadDocument(data);
let amfName = "";
let amfAuthor = "";
const amfScale = loadDocumentScale(xmlData);
const amfMaterials = {};
const amfObjects = {};
const childNodes = xmlData.documentElement.childNodes;
let i, j;
for (i = 0; i < childNodes.length; i++) {
const child = childNodes[i];
if (child.nodeName === "metadata") {
if (child.attributes.type !== void 0) {
if (child.attributes.type.value === "name") {
amfName = child.textContent;
} else if (child.attributes.type.value === "author") {
amfAuthor = child.textContent;
}
}
} else if (child.nodeName === "material") {
const loadedMaterial = loadMaterials(child);
amfMaterials[loadedMaterial.id] = loadedMaterial.material;
} else if (child.nodeName === "object") {
const loadedObject = loadObject(child);
amfObjects[loadedObject.id] = loadedObject.obj;
}
}
const sceneObject = new THREE.Group();
const defaultMaterial = new THREE.MeshPhongMaterial({ color: 11184895, flatShading: true });
sceneObject.name = amfName;
sceneObject.userData.author = amfAuthor;
sceneObject.userData.loader = "AMF";
for (const id in amfObjects) {
const part = amfObjects[id];
const meshes = part.meshes;
const newObject = new THREE.Group();
newObject.name = part.name || "";
for (i = 0; i < meshes.length; i++) {
let objDefaultMaterial = defaultMaterial;
const mesh = meshes[i];
const vertices = new THREE.Float32BufferAttribute(mesh.vertices, 3);
let normals = null;
if (mesh.normals.length) {
normals = new THREE.Float32BufferAttribute(mesh.normals, 3);
}
if (mesh.color) {
const color = mesh.color;
objDefaultMaterial = defaultMaterial.clone();
objDefaultMaterial.color = new THREE.Color(color.r, color.g, color.b);
if (color.a !== 1) {
objDefaultMaterial.transparent = true;
objDefaultMaterial.opacity = color.a;
}
}
const volumes = mesh.volumes;
for (j = 0; j < volumes.length; j++) {
const volume = volumes[j];
const newGeometry = new THREE.BufferGeometry();
let material = objDefaultMaterial;
newGeometry.setIndex(volume.triangles);
newGeometry.setAttribute("position", vertices.clone());
if (normals) {
newGeometry.setAttribute("normal", normals.clone());
}
if (amfMaterials[volume.materialId] !== void 0) {
material = amfMaterials[volume.materialId];
}
newGeometry.scale(amfScale, amfScale, amfScale);
newObject.add(new THREE.Mesh(newGeometry, material.clone()));
}
}
sceneObject.add(newObject);
}
return sceneObject;
}
}
exports.AMFLoader = AMFLoader;
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