217 lines
5.5 KiB
JavaScript
217 lines
5.5 KiB
JavaScript
var mesh = {};
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// Mesh
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mesh.Mesh = function() {
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this.vertices = [];
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this.faces = [];
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this.texCoords = [];
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this.faceIndex = 0;
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this.material = null;
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}
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mesh.Mesh.prototype.addVertex = function(vertex) {
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if (vertex instanceof mesh.Vertex) {
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this.vertices.push(vertex);
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} else if (typeof vertex === 'string' || vertex instanceof String) {
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this.vertices.push(new mesh.Vertex(vertex));
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} else {
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console.error("Can only add vertex from mesh.Vertex or string");
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return;
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}
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return this.vertices[this.vertices.length - 1];
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}
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mesh.Mesh.prototype.addFaces = function(face) {
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this.index = this.faces.length;
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var faces;
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if (face instanceof mesh.Face) {
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this.faces.push(face);
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} else if (typeof face === 'string' || face instanceof String) {
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faces = parseFace(face);
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this.faces = this.faces.concat(faces);
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} else {
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console.error("Can only add face from mesh.Face or string");
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return;
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}
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if (faces === undefined) {
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return this.faces[this.faces.length - 1];
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} else {
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return faces;
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}
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}
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mesh.Mesh.prototype.addTexCoord = function(texCoord) {
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this.index = this.texCoords.length;
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if (texCoord instanceof mesh.TexCoord) {
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this.texCoords.push(texCoord);
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} else if (typeof texCoord === 'string' || texCoord instanceof String) {
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this.texCoords.push(new mesh.TexCoord(texCoord));
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} else {
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console.error("Can only add texCoord from mesh.TexCoord or string");
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return;
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}
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return this.texCoords[this.texCoords.length - 1];
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}
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mesh.Mesh.prototype.isFinished = function() {
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return this.faces.length === this.faceIndex;
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}
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// Vertex
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mesh.Vertex = function() {
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if (typeof arguments[0] === 'string' || arguments[0] instanceof String) {
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var split = arguments[0].replace(/\s+/g, " ").split(' ');
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this.x = parseFloat(split[1]);
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this.y = parseFloat(split[2]);
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this.z = parseFloat(split[3]);
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}
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this.sent = false;
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}
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mesh.Vertex.prototype.toList = function() {
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return ['v', this.index, this.x, this.y, this.z];
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}
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mesh.Vertex.prototype.toString = function() {
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return 'v ' + this.x + ' ' + this.y + ' ' + this.z;
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}
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// TexCoord : texture coordinates
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mesh.TexCoord = function() {
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if (typeof arguments[0] === 'string' || arguments[0] instanceof String) {
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var split = arguments[0].replace(/\s+/g, " ").split(' ');
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this.x = parseFloat(split[1]);
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this.y = parseFloat(split[2]);
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}
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this.sent = false;
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}
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mesh.TexCoord.prototype.toList = function() {
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return ['vt', this.index, this.x, this.y];
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}
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mesh.TexCoord.prototype.toString = function() {
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return 'vt ' + this.x + ' ' + this.y;
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}
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// Face
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mesh.Face = function() {
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if (typeof arguments[0] === 'string' || arguments[0] instanceof String) {
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if (arguments[0].indexOf('/') === -1) {
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// No / : easy win : "f 1 2 3" or "f 1 2 3 4"
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var split = arguments[0].replace(/\s+/g, ' ').split(' ');
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this.a = parseInt(split[1]) - 1;
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this.b = parseInt(split[2]) - 1;
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this.c = parseInt(split[3]) - 1;
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} else {
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// There might be textures coords
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var split = arguments[0].replace(/\s+/g, ' ').trim().split(' ');
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// Split elements
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var split1 = split[1].split('/');
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var split2 = split[2].split('/');
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var split3 = split[3].split('/');
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var vIndex = 0;
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// var tIndex = split1.length === 2 ? 1 : 2;
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var tIndex = 1;
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this.a = parseInt(split1[vIndex]) - 1; this.aTexture = parseInt(split1[tIndex]) - 1;
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this.b = parseInt(split2[vIndex]) - 1; this.bTexture = parseInt(split2[tIndex]) - 1;
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this.c = parseInt(split3[vIndex]) - 1; this.cTexture = parseInt(split3[tIndex]) - 1;
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}
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}
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this.sent = false;
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}
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var parseFace = function(arg) {
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var split = arg.split(' ');
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var ret = [];
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// Face3
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if (split.length >= 4) {
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ret.push(new mesh.Face(arg));
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}
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if (split.length >= 5) {
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ret.push(new mesh.Face(
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[
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split[0],
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split[1],
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split[3],
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split[4]
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].join(' ')
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));
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}
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return ret;
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}
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mesh.Face.prototype.max = function() {
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if (this.d !== undefined) {
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return Math.max(this.a, this.b, this.c, this.d);
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} else {
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return Math.max(this.a, this.b, this.c);
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}
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}
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mesh.Face.prototype.maxTexture = function() {
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if (this.dTexture) {
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return Math.max(this.aTexture, this.bTexture, this.cTexture, this.dTexture);
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} else {
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return Math.max(this.aTexture, this.bTexture, this.cTexture);
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}
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}
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mesh.Face.prototype.toList = function() {
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var l = ['f', this.index, this.a, this.b, this.c];
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// if (this.d !== undefined)
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// l.push(this.d);
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// if (this.aTexture !== undefined) {
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// l.push(this.aTexture);
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// l.push(this.bTexture);
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// l.push(this.cTexture);
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// }
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// if (this.dTexture !== undefined)
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// l.push(this.dTexture);
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return l;
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}
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mesh.Face.prototype.toString = function() {
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return 'f ' + this.a + ' ' + this.b + ' ' + this.c + (this.d !== undefined ? ' ' + this.d : '');
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}
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// Material
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mesh.Material = function() {
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var split = arguments[0].replace(/\s+/g, ' ').split(' ');
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this.name = split[1];
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}
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mesh.Material.prototype.toString = function() {
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return 'usemtl ' + this.name;
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}
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mesh.Material.prototype.toList = function() {
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return ['u', this.name];
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}
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module.exports = mesh;
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