519 lines
15 KiB
JavaScript
519 lines
15 KiB
JavaScript
/** Copyright Stewart Allen <sa@grid.space> -- All Rights Reserved */
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"use strict";
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(function() {
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gapp.register("mesh.model", [
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"add.array", // dep: add.array
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"add.three", // dep: add.three
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"moto.license", // dep: moto.license
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"mesh.object", // dep: mesh.object
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"mesh.group", // dep: mesh.group
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"mesh.util", // dep: mesh.util
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"mesh.api", // dep: mesh.api
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]);
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let mesh = self.mesh = self.mesh || {};
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if (mesh.model) return;
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let mapp = mesh;
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let space = moto.Space;
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let worker = moto.client.fn;
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let { MeshPhongMaterial, MeshBasicMaterial } = THREE;
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let { BufferGeometry, BufferAttribute, DoubleSide, Mesh } = THREE;
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/** default materials **/
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let materials = mesh.material = {
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// model unselected
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normal: new MeshPhongMaterial({
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side: DoubleSide,
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transparent: true,
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shininess: 100,
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specular: 0x202020,
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color: 0xf0f000,
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opacity: 1
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}),
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// model selected
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select: new MeshPhongMaterial({
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side: DoubleSide,
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transparent: true,
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shininess: 100,
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specular: 0x202020,
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color: 0x00e000,
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opacity: 1
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}),
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// face selected (for groups ranges)
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face: new MeshPhongMaterial({
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side: DoubleSide,
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transparent: true,
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shininess: 100,
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specular: 0x202020,
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color: 0x0088ee,
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opacity: 1
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}),
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wireframe: new MeshBasicMaterial({
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side: DoubleSide,
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wireframe: true,
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color: 0x0,
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transparent: true,
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opacity: 0.5
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}),
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};
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/** 3D model rendered on plaform **/
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mesh.model = class MeshModel extends mesh.object {
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constructor(data, id) {
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super(id);
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let { file, mesh, vertices, indices, normals } = data;
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if (!mesh) {
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dbug.error(`'${file}' missing mesh data`);
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return;
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}
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// remove file name extensions
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let text = file || '';
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let dot = text.lastIndexOf('.');
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if (dot > 0) file = text.substring(0, dot);
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// create local materials
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this.mats = {
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normal: materials.normal.clone(),
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select: materials.select.clone(),
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face: materials.face.clone()
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};
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// information about selected faces, lines, and vertices
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// vertex compound keys are sorted least index to greatest
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this.sel = {
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faces: [], // first index into vertices
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lines: {}, // key = vertex-vertex, val = [ faces ]
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verts: {}, // key = x-y-z, val = { faces:[], sphere }
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};
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this.file = file || 'unnamed';
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this.load(mesh || vertices, indices, normals);
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}
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get type() {
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return "model";
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}
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get object() {
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return this.mesh;
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}
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get matrix() {
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return this.mesh.matrixWorld.elements;
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}
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// return new group containing just this model in world coordinates
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duplicate() {
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worker.model_duplicate({
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matrix: this.matrix,
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id: this.id
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}).then(data => {
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mesh.api.group.new([new mesh.model({
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file: `${this.file}-dup`,
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mesh: data
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})]).select();
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});
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}
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load(vertices, indices, normals) {
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let geo = new BufferGeometry();
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geo.setAttribute('position', new BufferAttribute(vertices, 3));
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if (indices) geo.setIndex(new BufferAttribute(indices, 1));
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if (!normals) geo.computeVertexNormals();
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let meh = this.mesh = new Mesh(geo, [
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this.mats.normal,
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this.mats.face
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]);
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geo.addGroup(0, Infinity, 0);
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meh.receiveShadow = true;
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meh.castShadow = true;
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meh.renderOrder = 1;
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// sets fallback opacity for wireframe toggle
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this.opacity(1);
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// this ref allows clicks to be traced to models and groups
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meh.model = this;
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// persist in db so it can be restored on page load
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mapp.db.space.put(this.id, { file: this.file, mesh: vertices });
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// sync data to worker
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worker.model_load({id: this.id, name: this.file, vertices, indices});
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}
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reload(vertices, indices, normals) {
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let was = this.wireframe(false);
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let geo = this.mesh.geometry;
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geo.setAttribute('position', new BufferAttribute(vertices, 3));
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geo.setAttribute('normal', undefined);
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if (indices) geo.setIndex(new BufferAttribute(indices, 1));
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geo.attributes.position.needsUpdate = true;
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if (!normals) geo.computeVertexNormals();
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// persist in db so it can be restored on page load
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mapp.db.space.put(this.id, { file: this.file, mesh: vertices });
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// sync data to worker
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worker.model_load({id: this.id, name: this.name, vertices, indices});
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// restore wireframe state
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this.wireframe(was);
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// fixup normals
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this.normals({refresh: true});
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}
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get group() {
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return this._group;
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}
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set group(gv) {
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if (gv && this._group && this._group !== gv) {
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throw "models can only belong to one group";
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}
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this._group = gv;
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}
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get attributes() {
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return this.mesh.geometry.attributes;
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}
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get vertices() {
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return this.attributes.position.count;
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}
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get faces() {
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return this.vertices / 3;
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}
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// todo -- put model into its own group
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ungroup() {
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// get current world coordinates
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let { mid } = meh.getBoundingBox();
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// transform mesh into world coordinates
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// move mesh to origin
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// create and add to group
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// move group center back to original center
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geo.moveMesh(-mid.x, -mid.y, -mid.z);
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geo.computeBoundingBox();
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this.move(mid.x, mid.y, mid.z);
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}
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// get, set, or toggle visibility of model and wireframe
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visible(bool) {
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if (bool === undefined) {
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return this.mesh.visible;
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}
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if (bool.toggle) {
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return this.visible(!this.mesh.visible);
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}
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this.mesh.visible = bool;
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}
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// get, set, or toggle selection of model (coloring)
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select(bool) {
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if (bool === undefined) {
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return this.mesh.material[0] === this.mats.normal;
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}
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if (bool.toggle) {
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return this.select(!this.select());
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}
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this.mesh.material[0] = bool ? this.mats.select : this.mats.normal;
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return bool;
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}
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// return selected state
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selected() {
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return this.select();
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}
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opacity(ov, opt = {}) {
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let mat = this.mesh.material;
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if (ov === undefined) {
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return mat[0].opacity;
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}
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if (ov.restore) {
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ov = this._op;
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} else if (ov.temp !== undefined) {
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ov = ov.temp;
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} else {
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this._op = ov;
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}
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for (let m of Object.values(this.mats)) {
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if (ov <= 0.0) {
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m.transparent = false;
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m.opacity = 1;
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m.visible = false;
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} else {
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m.transparent = true;
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m.opacity = ov;
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m.visible = true;
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}
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}
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space.update();
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}
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wireframe(bool, opt = {}) {
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let was = this._wire ? true : false;
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if (bool === undefined) {
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return was ? {
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enabled: true,
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opacity: this.opacity(),
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color: was ? this._wire.material.color : undefined,
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} : {
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enabled: false
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};
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}
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if (bool.toggle) {
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bool = !was;
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}
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// no change
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if (was === bool) {
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return was;
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}
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if (was) {
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this.mesh.remove(this._wire);
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this._wire = undefined;
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this.opacity({restore: true});
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}
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if (bool) {
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this._wire = new Mesh(this.mesh.geometry.shallowClone(), materials.wireframe);
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this.mesh.add(this._wire);
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this.opacity({temp: opt.opacity || 0.15});
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}
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space.update();
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return was;
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}
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normals(bool) {
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let was = this._norm ? true : false;
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if (bool === undefined) {
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return was;
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}
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if (bool.toggle) {
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bool = !was;
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}
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if (bool.refresh && !was) {
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return;
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}
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// no change
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if (was === bool) {
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return was;
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}
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if (was) {
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this.mesh.remove(this._norm);
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this._norm = undefined;
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}
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if (bool) {
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this.mesh.add(this._norm = mesh.util.faceNormals(this.mesh, { size: 0.5 }));
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}
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}
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// invert normals for entire mesh or selected faces depending on mod
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invert(mode) {
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let { modes } = mesh.api;
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let geo = this.mesh.geometry;
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let pos = geo.attributes.position;
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let arr = pos.array;
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function swap(i) {
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let v1x = arr[i ];
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let v1y = arr[i+1];
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let v1z = arr[i+2];
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arr[i ] = arr[i+3];
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arr[i+1] = arr[i+4];
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arr[i+2] = arr[i+5];
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arr[i+3] = v1x;
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arr[i+4] = v1y;
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arr[i+5] = v1z;
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}
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switch (mode) {
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case modes.object:
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for (let i=0, l=arr.length; i<l; i += 9) {
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swap(i);
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}
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break;
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case modes.face:
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for (let face of this.sel.faces) {
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swap(face * 9);
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}
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break;
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}
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this.reload(arr);
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if (this._norm) this._norm.update();
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}
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// split model along given plane
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split(plane) {
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// extract axes from plane and split when present (only z for now)
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let { z } = plane;
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let m4 = this.mesh.matrix;
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return new Promise((resolve,reject) => {
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let { id, matrix } = this;
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worker.model_split({id, matrix, z}).then(data => {
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let { o1, o2 } = data;
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// new model becomes top
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if (o2.length)
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this.group.add(new mesh.model({
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file: `${this.file}`,
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mesh: o2
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}).applyMatrix4(m4)).select();
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// this becomes bottom
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if (o1.length) {
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this.reload(o1);
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} else {
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this.remove();
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}
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// and we're done
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resolve();
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});
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});
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}
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// remove model from group and space
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remove() {
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if (arguments.length === 0) {
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// direct call requires pass through group
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this.group.remove(this);
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this.group = undefined;
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this.removed = 'pending';
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} else {
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// manage lifecycle with worker, mesh app caches, etc
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this.destroy();
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// tag removed for debugging
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this.removed = 'complete';
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}
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}
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updateBoundsBox() {
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if (this.group) {
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mesh.util.defer(this.group.deferUBB);
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}
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}
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clearSelections() {
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// clear face selections (since they've been deleted);
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this.sel.faces = [];
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this.updateSelections();
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}
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deleteSelections(mode) {
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let { geometry } = this.mesh;
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let { groups } = geometry;
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let { array } = geometry.attributes.position;
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let newtot = 0;
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// filter to unselected groups
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groups = groups.filter(g => g.materialIndex === 0);
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for (let group of groups) {
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let start = group.start * 3;
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let count = group.count * 3;
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newtot += group.count < Infinity ? count : array.length - start;
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}
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// nothing to do if new length is the same
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if (newtot === array.length) {
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return;
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}
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let newverts = new Float32Array(newtot);
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let pos = 0;
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// copy back unselected faces
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for (let group of groups) {
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let start = group.start * 3;
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let count = group.count * 3;
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if (count === Infinity) count = array.length - start;
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let slice = array.slice(start, start + count);
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newverts.set(slice, pos);
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pos += count;
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}
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this.reload(newverts);
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// clear face selections (since they've been deleted);
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this.sel.faces = [];
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this.updateSelections();
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// let { modes } = mesh.api;
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// switch (mode) {
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// case modes.face:
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// console.log('delete selected faces');
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// break;
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// }
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}
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updateSelections() {
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let faces = this.sel.faces;
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let groups = [];
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if (faces && faces.length) {
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faces = faces.sort((a,b) => a - b).slice();
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let first = faces.shift();
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if (first > 0) {
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groups.push({ start: 0, count: first, mat: 0 });
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}
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let range = { start: first, count: 1, mat: 1 };
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groups.push(range);
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for (let face of faces) {
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if (face === range.start + range.count) {
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range.count++;
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} else {
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groups.push(range = { start: range.start + range.count, count: face - range.start - range.count });
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groups.push(range = { start: face, count: 1, mat: 1 });
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}
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}
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groups.push({ start: range.start + range.count, count: Infinity });
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} else {
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groups.push({ start: 0, count: Infinity });
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}
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let geo = this.mesh.geometry;
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geo.clearGroups();
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for (let group of groups) {
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geo.addGroup(group.start*3, group.count*3, group.mat || 0);
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}
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}
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toggleSelectedFaces(toggle = []) {
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let faces = this.sel.faces;
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for (let t of toggle) {
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faces.remove(t) || faces.addOnce(t);
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}
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}
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toggleSelectedVertices(vert) {
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if (Array.isArray(vert)) {
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for (let e of vert) {
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this.toggleSelectedVertices(e);
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}
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return;
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}
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let sel = this.sel;
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let key = [x,y,z].map(v => v.round(5)).join('-');
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let rec = sel.verts[key];
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if (rec) {
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delete sel.verts[key];
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space.scene.remove(rec.sphere);
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} else {
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let geometry = new THREE.SphereGeometry( 0.5, 16, 16 );
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let material = new MeshPhongMaterial( { color: 0x777777, transparent: true, opacity: 0.25 } );
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let sphere = new Mesh( geometry, material );
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sphere.position.set(x, y, z);
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space.scene.add(sphere);
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sel.verts[key] = {
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sphere,
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faces,
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verts
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};
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}
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}
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// find adjacent faces to clicked point/line on a face
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find(point, face) {
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let { x, y, z } = point;
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let { a, b, c } = face;
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worker.model_select({
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id: this.id, x, y:-z, z:y, a, b, c, matrix: this.matrix
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}).then(data => {
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let { faces, edges, verts, point } = data;
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// console.log({data});
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// this.toggleSelectedVertices(verts);
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this.toggleSelectedFaces(faces);
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this.updateSelections();
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});
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}
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};
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})();
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