346 lines
10 KiB
JavaScript
346 lines
10 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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if (self.kiri.codec) return;
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const BASE = self.base, KIRI = self.kiri, handlers = {};
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const freeMem = true;
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const zeroOut = true;
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const codec = KIRI.codec = {
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undef: undefined,
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encode: encode,
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decode: decode,
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registerDecoder: registerDecoder,
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allocFloat32Array: allocFloat32Array
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};
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function allocFloat32Array(arg) {
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if (arg.byteLength) {
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// already a float array
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return arg;
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}
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if (Array.isArray(arg)) {
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// create float array from array
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return new Float32Array(arg);
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}
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// usually a number (size) for array
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return new Float32Array(arg);
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}
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function encode(o, state) {
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state = state || {};
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if (o === null) return null;
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if (o === undefined) return undefined;
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if (Array.isArray(o)) {
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let arr = new Array(o.length), i=0;
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while (i < o.length) arr[i] = encode(o[i++], state);
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return arr;
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}
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switch (typeof(o)) {
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case 'string':
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case 'number':
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return o;
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case 'object':
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if (o.encode) return o.encode(state);
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return genOEncode(o, state);
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}
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return null;
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}
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function decode(o, state) {
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state = state || {};
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if (o === null) return null;
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if (o === undefined) return undefined;
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if (Array.isArray(o)) {
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for (let i=0; i < o.length; i++) o[i] = decode(o[i],state);
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return o;
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}
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switch (typeof(o)) {
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case 'string':
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case 'number':
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return o;
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case 'object':
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if (o.type && handlers[o.type]) return handlers[o.type](o,state);
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return genODecode(o, state);
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}
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return null;
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}
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function registerDecoder(type, handler) {
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handlers[type] = handler;
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}
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function genOEncode(o, state) {
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if (o instanceof Float32Array) return o;
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let out = {};
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for (let k in o) {
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if (o.hasOwnProperty(k)) out[k] = encode(o[k], state);
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}
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return out;
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}
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function genODecode(o, state) {
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if (o instanceof Float32Array) return o;
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let out = {};
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for (let k in o) {
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if (o.hasOwnProperty(k)) out[k] = decode(o[k], state);
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}
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return out;
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}
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/** ******************************************************************
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* Object Class CODEC Functions
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******************************************************************* */
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KIRI.Widget.prototype.encode = function(state) {
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const json = state._json_;
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const geo = this.getGeoVertices();
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const coded = {
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type: 'widget',
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id: this.id,
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ver: 1, // for better future encodings
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json: json, // safe for JSON (float32array mess)
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group: this.group.id,
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track: this.track,
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geo: json ? Array.from(geo) : geo
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};
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return coded;
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};
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registerDecoder('widget', function(v, state) {
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const id = v.id,
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group = v.group || id,
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track = v.track || undefined,
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widget = KIRI.newWidget(id, KIRI.Widget.Groups.forid(group));
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widget.loadVertices(v.json ? v.geo.toFloat32() : v.geo);
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widget.saved = Date.now();
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if (track && track.pos) {
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widget.track = track;
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widget.move(track.pos.x, track.pos.y, track.pos.z, true);
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}
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return widget;
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});
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KIRI.Slice.prototype.encode = function(state) {
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const rv = {
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type: 'slice',
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z: this.z,
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index: this.index,
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layers: encode(this.layers, state)
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};
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// aggressively free memory
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if (freeMem) this.layers = undefined;
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return rv;
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};
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registerDecoder('slice', function(v, state) {
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let slice = KIRI.newSlice(v.z, state.mesh ? state.mesh.newGroup() : null);
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slice.index = v.index;
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slice.layers = decode(v.layers, state)
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return slice;
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});
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KIRI.Layers.prototype.encode = function(state) {
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let enc = {
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type: 'layers',
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layers: Object.keys(this.layers),
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data: Object.values(this.layers).map(layer => {
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const e = {
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polys: encode(layer.polys, state),
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lines: encodePointArray(layer.lines, state),
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faces: codec.allocFloat32Array(layer.faces),
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cface: layer.cface || codec.undef,
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color: layer.color,
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paths: layer.paths.map(lp => {
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const pe = {
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z: lp.z,
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index: lp.index,
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faces: codec.allocFloat32Array(lp.faces)
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};
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if (zeroOut && state.zeros && pe.faces.length) {
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state.zeros.push(pe.faces.buffer);
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}
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return pe;
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}),
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cpath: layer.cpath || codec.undef,
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off: layer.off
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};
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if (zeroOut && state.zeros && e.faces.length) {
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state.zeros.push(e.faces.buffer);
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}
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// console.log('-->',layer,e);
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return e;
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})
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};
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// aggressively free memory
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if (freeMem) this.init();
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return enc;
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};
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registerDecoder('layers', function(v, state) {
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let render = new KIRI.Layers();
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for (let i=0; i<v.layers.length; i++) {
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const d = render.layers[v.layers[i]] = {
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polys: decode(v.data[i].polys, state),
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cpoly: v.data[i].cpoly,
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lines: decodePointArray(v.data[i].lines),
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faces: codec.allocFloat32Array(v.data[i].faces),
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cface: v.data[i].cface,
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color: v.data[i].color,
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paths: v.data[i].paths.map(lp => {
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return {
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z: lp.z,
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index: lp.index,
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faces: codec.allocFloat32Array(lp.faces)
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};
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}),
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cpath: v.data[i].cpath,
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off: v.data[i].off
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};
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// fixup null -> Infinity in material counts (JSON stringify sucks)
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if (d.cface) {
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d.cface.forEach(rec => {
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if (rec.count === null) {
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rec.count = Infinity;
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}
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});
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}
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if (d.cpoly) {
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d.cpoly.forEach(rec => {
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if (rec.count === null) {
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rec.count = Infinity;
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}
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});
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}
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if (d.cpath) {
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d.cpath.forEach(rec => {
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if (rec.count === null) {
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rec.count = Infinity;
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}
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});
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}
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// console.log('<--',d);
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}
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return render;
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});
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KIRI.Top.prototype.encode = function(state) {
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return {
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type: 'top',
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poly: encode(this.poly, state),
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};
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};
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registerDecoder('top', function(v, state) {
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let top = KIRI.newTop(decode(v.poly, state));
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return top;
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});
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function encodePointArray(points, state) {
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if (!points) return null;
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let array = codec.allocFloat32Array(points.length * 3),
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pos = 0;
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points.forEach(function(point) {
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if (state.rotate) {
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if (state.centerz) {
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point.z -= state.centerz;
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}
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let v = new THREE.Vector3(point.x, point.y, point.z);
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v.applyMatrix4(state.rotate);
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point = {x: v.x, y: v.y, z: v.z};
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if (state.centerz) {
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point.z += state.centerz;
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}
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if (state.movez) {
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point.z -= state.movez;
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}
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}
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array[pos++] = point.x;
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array[pos++] = point.y;
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array[pos++] = point.z;
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});
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if (zeroOut && state.zeros) {
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state.zeros.push(array.buffer);
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}
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return array;
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}
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function decodePointArray(array) {
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if (!array) return null;
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let vid = 0,
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pid = 0,
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points = new Array(array.length/3);
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while (vid < array.length) {
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points[pid++] = BASE.newPoint(array[vid++], array[vid++], array[vid++]);
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}
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return points;
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}
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BASE.Polygon.prototype.encode = function(state) {
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if (!state.poly) state.poly = {};
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let cached = state.poly[this.id];
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if (cached) {
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return { type: 'poly', ref: this.id };
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}
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state.poly[this.id] = this;
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return {
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type: 'poly',
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id: this.id,
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array: encodePointArray(this.points, state),
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inner: encode(this.inner, state),
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parent: encode(this.parent, state),
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depth: this.depth,
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color: this.color,
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open: this.open
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};
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};
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registerDecoder('poly', function(v, state) {
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if (!state.poly) state.poly = {};
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if (v.ref) return state.poly[v.ref];
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let poly = BASE.newPolygon(),
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vid = 0;
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// if passed a normal array, convert to float32
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if (v.array.toFloat32) {
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v.array = v.array.toFloat32();
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}
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while (vid < v.array.length) {
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poly.push(BASE.newPoint(v.array[vid++], v.array[vid++], v.array[vid++]));
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}
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poly.id = v.id;
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poly.open = v.open;
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state.poly[v.id] = poly;
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poly.inner = decode(v.inner, state);
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poly.parent = decode(v.parent, state);
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poly.depth = v.depth;
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poly.color = v.color;
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return poly;
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});
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})();
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