196 lines
4.4 KiB
JavaScript
196 lines
4.4 KiB
JavaScript
var Log = require('../lib/NodeLog.js');
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/**
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* Represents a mesh. All meshes are loaded once in geo.availableMesh to avoid
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* loading at each mesh request
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* @constructor
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* @memberOf geo
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*/
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geo.MeshContainer = function(path, callback) {
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/**
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* array of each part of the mesh
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* @type {geo.Mesh[]}
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*/
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this.meshes = [];
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/**
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* array of the vertices of the meshes (all merged)
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* @type {geo.Vertex[]}
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*/
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this.vertices = [];
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/**
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* array of the faces of the meshes (all merged)
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* @type {geo.Face[]}
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*/
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this.faces = [];
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/**
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* array of the normals of the meshes (all merged)
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* @type {geo.Normal[]}
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*/
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this.normals = [];
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/**
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* array of the texture coordinates (all merged)
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* @type {geo.TexCoord[]}
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*/
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this.texCoords = [];
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/**
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* Number of elements to stream in the mesh
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* @type {Number}
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*/
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this.numberOfFaces = 0;
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this.callback = callback;
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if (path !== undefined) {
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this.loadFromFile(path);
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}
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};
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/**
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* Loads a obj file
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* @param {string} path the path to the file
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*/
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geo.MeshContainer.prototype.loadFromFile = function(path) {
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var self = this;
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fs.readFile(path, {encoding: 'utf-8'}, function(err, data) {
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var currentMesh;
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// Get lines from file
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var lines = data.toString('utf-8').split("\n");
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// For each line
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for (var i = 0; i < lines.length; i++) {
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var line = lines[i];
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if (line[0] === 'v') {
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if (line[1] === 't') {
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// Texture coord
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var texCoord = new geo.TexCoord(line);
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texCoord.index = self.texCoords.length;
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self.texCoords.push(texCoord);
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} else if (line[1] === 'n') {
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var normal = new geo.Normal(line);
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normal.index = self.normals.length;
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self.normals.push(normal);
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} else {
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// Just a simple vertex
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var vertex = new geo.Vertex(line);
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vertex.index = self.vertices.length;
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self.vertices.push(vertex);
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}
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} else if (line[0] === 'f') {
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self.numberOfFaces++;
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// Create mesh if it doesn't exist
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if (currentMesh === undefined) {
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currentMesh = new geo.Mesh();
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self.meshes.push(currentMesh);
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}
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// Create faces (two if Face4)
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var faces = currentMesh.addFaces(line);
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faces[0].index = self.faces.length;
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faces[0].meshIndex = self.meshes.length - 1;
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self.faces.push(faces[0]);
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if (faces.length === 2) {
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self.numberOfFaces++;
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faces[1].index = self.faces.length;
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faces[1].meshIndex = self.meshes.length - 1;
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self.faces.push(faces[1]);
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}
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} else if (line[0] === 'u') {
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// usemtl
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// If a current mesh exists, finish it
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// Create a new mesh
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currentMesh = new geo.Mesh();
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self.meshes.push(currentMesh);
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currentMesh.material = (new geo.Material(line)).name;
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// console.log(currentMesh.material);
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}
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}
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if (typeof self.callback === 'function') {
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self.callback();
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}
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});
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};
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function trySetLoaded() {
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for (var name in availableMeshNames) {
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if (availableMeshNames[name] === false) {
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return;
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}
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}
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Log.ready("All meshes are ready");
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}
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var availableMeshNames = {
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'/static/data/castle/princess peaches castle (outside).obj':false,
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'/static/data/mountain/coocoolmountain.obj':false,
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'/static/data/whomp/Whomps Fortress.obj':false,
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'/static/data/bobomb/bobomb battlefeild.obj':false,
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'/static/data/sponza/sponza.obj':false
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};
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for (var i = 1; i < 26; i++) {
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availableMeshNames['/static/data/spheres/' + i + '.obj'] = false;
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}
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geo.availableMeshes = {};
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function pushMesh(name) {
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geo.availableMeshes[name] = new geo.MeshContainer(name.substring(1, name.length), function() {
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availableMeshNames[name] = true;
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trySetLoaded();
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});
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}
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for (var name in availableMeshNames) {
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pushMesh(name);
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}
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