1.0.0

.gitignore

+/dist/
+/.nyc_output/
+
+# Dependency directories
+node_modules/
+
+# Logs
+logs/
+*.log
+npm-debug.log*
+
+# Optional npm cache directory
+.npm/
+
+# Optional REPL history
+.node_repl_history/

.npmignore

+*
+!/src/**/*

CHANGELOG.md

+# Changelog
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
+and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+## [1.0.0] - 2019-11-17
+
+### Added
+
+- Implemented basic data types (`v`, `vt`, `vn`, `g`, `o`, `s`, `f`)

README.md

+# objb
+
+A binary representation of obj file format.
+
+## Usage
+
+### `objToObjb(source[, options])`
+
+Converts obj file to objb.
+
+- `source` `string`
+    
+    Obj file content.
+    
+- `options`
+    - `useFloat16` `[boolean]` Default: `false`
+        
+        Use `float16` instead of `float32`. May result in decreased model accuracy.
+
+Returns `ArrayBuffer` with objb file content.
+
+### `objbToObj(buffer)`
+
+Converts objb file to obj.
+
+- `buffer` `ArrayBuffer`
+    
+    Objb file content.
+
+Returns `string` with obj file content.
+
+## File format
+
+- Header: 8 bytes
+    - Version: 2 bytes
+        - Major: `uint8`
+        - Minor: `uint8`
+    - Options: 6 bytes
+        - useFloat16: 0<sup>th</sup> bit of 0<sup>th</sup> byte
+- Body
+    - &lt;Section&gt;*
+
+#### Section
+
+- Keyword: `uint8`
+    
+    One of `v (0x1)`, `vn (0x2)`, `vt (0x3)`, `g (0x4)`, `o (0x5)`, `s (0x6)`, `f (0x7)`.
+- Length: `uint32 (BE)`
+    
+    Length of the section data.
+- Data:
+    
+    One of the following depending on the keyword:
+    - `v`: 3 &times; (`float32`/`float16`)
+        
+        Section data length is a number of geometric vertices.
+    - `vt`: 3 &times; (`float32`/`float16`)
+        
+        Section data length is a number of texture vertices.
+    - `vn`: 3 &times; (`float32`/`float16`)
+        
+        Section data length is a number of vertex normals.
+    - `g`: &lt;string&gt;?
+        
+        Section data length is a string length.
+    - `o`: &lt;string&gt;?
+        
+        Section data length is a string length.
+    - `s`: &lt;string&gt;?
+        
+        Section data length is a string length.
+    - `f`:
+        
+        Section data length is a number of faces.
+        
+        - `L`: `uint8`
+            
+            Number of vertices in the face.
+        - `bits`: `uint8`
+            
+            Number of bits used to reference vertex data (`8`, `16` or `32`). 
+        - Data: `L` &times; (3 &times; `uint[bits]`)
+            
+            `0` means that the reference is omitted.
+
+#### String
+
+- Data: `L` &times; `uint16`,
+    
+    where `L` is a string length.

package.json

 {
 	"name":    "@gviagroup/objb",
-	"version": "0.1.0"
+	"version": "1.0.0",
+	
+	"main": "src/index.js",
+	
+	"scripts": {
+		"test": "nyc ava --verbose"
+	},
+	
+	"dependencies": {
+		"@petamoriken/float16": "^1.1.1"
+	},
+	"devDependencies": {
+		"ava": "^2.4.0",
+		"nyc": "^14.1.1"
+	}
 }

src/index.js

+'use strict';
+
+const {getFloat16, setFloat16} = require('@petamoriken/float16');
+
+const KEYWORDS = {
+	v:  0x1,
+	vn: 0x2,
+	vt: 0x3,
+	g:  0x4,
+	o:  0x5,
+	s:  0x6,
+	f:  0x7
+};
+
+module.exports = {
+	
+	objToObjb,
+	objbToObj
+	
+};
+
+function objToObjb(source, {useFloat16 = false} = {}) {
+	const buffer = new ArrayBuffer(Math.max(1024, source.length));
+	const view   = new DataView(buffer);
+	
+	view.setUint16(0, 0x0100);
+	if (useFloat16) view.setUint8(2, 1);
+	let offset = 8;
+	
+	const lines = source
+		.split(/\r\n|\r|\n/)
+		.map(line => line.trim())
+		.filter(Boolean);
+	
+	let currentSection       = null;
+	let currentSectionLength = 0;
+	let currentSectionOffset = null;
+	
+	let vCount  = 0;
+	let vtCount = 0;
+	let vnCount = 0;
+	
+	for (const line of lines) {
+		const [keyword, ...args] = line.split(/\s+/);
+		
+		writeSection(keyword);
+		
+		switch (keyword) {
+			case 'f':
+				view.setUint8(offset++, args.length);
+				
+				const bits = Math.max(8, 2**Math.ceil(Math.log2(Math.log2(Math.max(vCount, vtCount, vnCount)+1))));
+				view.setUint8(offset++, bits);
+				
+				for (const arg of args) {
+					const nums = arg.split('/');
+					for (let i = 0; i < 3; i++) {
+						view[`setUint${bits}`](offset, +(nums[i] || 0));
+						offset += bits / 8;
+					}
+				}
+				
+				currentSectionLength++;
+
+				break;
+			case 'g':
+			case 'o':
+			case 's':
+				writeString(args.join(' '));
+
+				break;
+			case 'v':
+				writeTriplet(args);
+				vCount++;
+				
+				break;
+			case 'vn':
+				writeTriplet(args);
+				vnCount++;
+				
+				break;
+			case 'vt':
+				writeTriplet(args);
+				vtCount++;
+				
+				break;
+		}
+	}
+	
+	writeSection(null);
+	
+	return buffer.slice(0, offset);
+	
+	
+	
+	function writeSection(keyword) {
+		if (currentSection === keyword) return;
+		
+		if (currentSection) view.setUint32(currentSectionOffset+1, currentSectionLength);
+		
+		if (!Object.keys(KEYWORDS).includes(keyword)) return;
+		currentSection       = keyword;
+		currentSectionLength = 0;
+		currentSectionOffset = offset;
+		view.setUint8(offset, KEYWORDS[keyword]);
+		offset += 5;
+	}
+	
+	function writeString(string) {
+		for (let i = 0; i < string.length; i++) {
+			view.setUint16(offset, string.charCodeAt(i));
+			offset += 2;
+		}
+		
+		currentSectionLength += string.length;
+	}
+	
+	function writeTriplet(args) {
+		for (let i = 0; i < 3; i++) {
+			if (useFloat16) {
+				setFloat16(view, offset, +args[i] || 0);
+				offset += 2;
+			} else {
+				view.setFloat32(offset, +args[i] || 0);
+				offset += 4;
+			}
+		}
+		currentSectionLength++;
+	}
+}
+
+function objbToObj(buffer) {
+	const view = new DataView(buffer);
+	let offset = 0;
+	let source = '';
+	
+	try {
+		if (view.getUint16(0) !== 0x0100) throw new SyntaxError('Unknown version');
+		const useFloat16 = !!(view.getUint8(2) & 1);
+		offset += 8;
+		
+		for ( ; offset < buffer.byteLength; ) {
+			switch (view.getUint8(offset++)) {
+				case KEYWORDS.v:
+					readTriplet('v');
+					break;
+				case KEYWORDS.vn:
+					readTriplet('vn');
+					break;
+				case KEYWORDS.vt:
+					readTriplet('vt');
+					break;
+				case KEYWORDS.g:
+					readString('g');
+					break;
+				case KEYWORDS.o:
+					readString('o');
+					break;
+				case KEYWORDS.s:
+					readString('s');
+					break;
+				case KEYWORDS.f:
+					const length = view.getUint32(offset);
+					offset += 4;
+					
+					for (let i = 0; i < length; i++) {
+						source += `f`;
+						
+						const L    = view.getUint8(offset++);
+						const bits = view.getUint8(offset++);
+						
+						for (let j = 0; j < L; j++) {
+							let triplet = [];
+							for (let k = 0; k < 3; k++) {
+								triplet.push(view[`getUint${bits}`](offset) || null);
+								offset += bits / 8;
+							}
+							source += ` ${triplet.join('/').replace(/\/+$/, '')}`;
+						}
+						
+						source += '\n';
+					}
+					break;
+				default: throw new SyntaxError(`Invalid sequence at offset 0x${(offset-1).toString(16)}`);
+			}
+		}
+		
+		return source;
+		
+		
+		
+		function readString(keyword) {
+			const length = view.getUint32(offset);
+			offset += 4;
+			
+			const codes = Array(length);
+			for (let i = 0; i < length; i++) {
+				codes[i] = view.getUint16(offset);
+				offset += 2;
+			}
+			
+			source += `${keyword} ${String.fromCharCode.apply(null, codes)}\n`;
+		}
+		
+		function readTriplet(keyword) {
+			const length = view.getUint32(offset);
+			offset += 4;
+			
+			for (let i = 0; i < length * 3; i++) {
+				if (!(i % 3)) source += keyword;
+				
+				if (useFloat16) {
+					source += ` ${getFloat16(view, offset)}`;
+					offset += 2;
+				} else {
+					source += ` ${view.getFloat32(offset)}`;
+					offset += 4;
+				}
+				
+				if (i && (i % 3) === 2) source += '\n';
+			}
+		}
+	} catch (e) {
+		throw new SyntaxError(`File was not parsed correctly. Probably invalid data structure. Reason: ${e.message}`);
+	}
+}

test/_lib.js

+'use strict';
+
+module.exports = require('../src/index');

test/_teapot.obj

+# 3ds Max Wavefront OBJ Exporter v0.97b - (c)2007 guruware
+# File Created: 07.05.2017 22:01:41
+
+mtllib teapot.mtl
+
+#
+# object Teapot001
+#
+
+v  0.179388 0.363031 0.000000
+v  0.162976 0.363031 0.083119
+v  0.160251 0.374198 0.081959
+v  0.176434 0.374198 0.000000
+v  0.163412 0.377921 0.083305
+v  0.179861 0.377921 0.000000
+v  0.169844 0.374198 0.086041
+v  0.186833 0.374198 0.000000
+v  0.176930 0.363031 0.089056
+v  0.194515 0.363031 0.000000
+v  0.117976 0.363031 0.150355
+v  0.115878 0.374198 0.148258
+v  0.118311 0.377921 0.150691
+v  0.123262 0.374198 0.155641
+v  0.128715 0.363031 0.161095
+v  0.050739 0.363031 0.195356
+v  0.049580 0.374198 0.192631
+v  0.050925 0.377921 0.195792
+v  0.053661 0.374198 0.202224
+v  0.056676 0.363031 0.209310
+v  -0.032380 0.363031 0.211768
+v  -0.032380 0.374198 0.208814
+v  -0.032380 0.377921 0.212241
+v  -0.032380 0.374198 0.219213
+v  -0.032380 0.363031 0.226894
+v  -0.121242 0.363031 0.195356
+v  -0.116762 0.374198 0.192631
+v  -0.116402 0.377921 0.195792
+v  -0.118511 0.374198 0.202224
+v  -0.121436 0.363031 0.209310
+v  -0.187840 0.363031 0.150355
+v  -0.182791 0.374198 0.148258
+v  -0.183709 0.377921 0.150691
+v  -0.188101 0.374198 0.155641
+v  -0.193475 0.363031 0.161095
+v  -0.229650 0.363031 0.083119
+v  -0.225818 0.374198 0.081959
+v  -0.228411 0.377921 0.083305
+v  -0.234634 0.374198 0.086041
+v  -0.241690 0.363031 0.089056
+v  -0.244148 0.363031 0.000000
+v  -0.241193 0.374198 0.000000
+v  -0.244620 0.377921 0.000000
+v  -0.251593 0.374198 0.000000
+v  -0.259274 0.363031 0.000000
+v  -0.227736 0.363031 -0.083119
+v  -0.225010 0.374198 -0.081959
+v  -0.228172 0.377921 -0.083304
+v  -0.234604 0.374198 -0.086041
+v  -0.241690 0.363031 -0.089056
+v  -0.182735 0.363031 -0.150355
+v  -0.180637 0.374198 -0.148258
+v  -0.183071 0.377921 -0.150691
+v  -0.188021 0.374198 -0.155641
+v  -0.193475 0.363031 -0.161095
+v  -0.115499 0.363031 -0.195356
+v  -0.114339 0.374198 -0.192631
+v  -0.115684 0.377921 -0.195792
+v  -0.118421 0.374198 -0.202224
+v  -0.121436 0.363031 -0.209310
+v  -0.032380 0.363031 -0.211768
+v  -0.032380 0.374198 -0.208814
+v  -0.032380 0.377921 -0.212241
+v  -0.032380 0.374198 -0.219213
+v  -0.032380 0.363031 -0.226894
+v  0.050739 0.363031 -0.195356
+v  0.049580 0.374198 -0.192631
+v  0.050925 0.377921 -0.195792
+v  0.053661 0.374198 -0.202224
+v  0.056676 0.363031 -0.209310
+v  0.117976 0.363031 -0.150355
+v  0.115878 0.374198 -0.148258
+v  0.118311 0.377921 -0.150691
+v  0.123262 0.374198 -0.155641
+v  0.128715 0.363031 -0.161095
+v  0.162976 0.363031 -0.083119
+v  0.160251 0.374198 -0.081959
+v  0.163412 0.377921 -0.083304
+v  0.169844 0.374198 -0.086041
+v  0.176930 0.363031 -0.089056
+v  0.202549 0.303648 0.099956
+v  0.222286 0.303648 0.000000
+v  0.224897 0.245329 0.109465
+v  0.246511 0.245329 0.000000
+v  0.240704 0.189138 0.116190
+v  0.263646 0.189138 0.000000
+v  0.246700 0.136137 0.118741
+v  0.270146 0.136137 0.000000
+v  0.148433 0.303648 0.180812
+v  0.165633 0.245329 0.198013
+v  0.177799 0.189138 0.210179
+v  0.182414 0.136137 0.214793
+v  0.067576 0.303648 0.234929
+v  0.077085 0.245329 0.257277
+v  0.083811 0.189138 0.273084
+v  0.086362 0.136137 0.279080
+v  -0.032380 0.303648 0.254665
+v  -0.032380 0.245329 0.278891
+v  -0.032380 0.189138 0.296026
+v  -0.032380 0.136137 0.302526
+v  -0.132336 0.303648 0.234929
+v  -0.141844 0.245329 0.257277
+v  -0.148570 0.189138 0.273084
+v  -0.151121 0.136137 0.279080
+v  -0.213192 0.303648 0.180812
+v  -0.230392 0.245329 0.198013
+v  -0.242558 0.189138 0.210179
+v  -0.247173 0.136137 0.214793
+v  -0.267308 0.303648 0.099956
+v  -0.289657 0.245329 0.109465
+v  -0.305464 0.189138 0.116190
+v  -0.311460 0.136137 0.118741
+v  -0.287045 0.303648 0.000000
+v  -0.311271 0.245329 0.000000
+v  -0.328406 0.189138 0.000000
+v  -0.334906 0.136137 0.000000
+v  -0.267308 0.303648 -0.099956
+v  -0.289657 0.245329 -0.109465
+v  -0.305464 0.189138 -0.116190
+v  -0.311460 0.136137 -0.118741
+v  -0.213192 0.303648 -0.180812
+v  -0.230392 0.245329 -0.198013
+v  -0.242558 0.189138 -0.210179
+v  -0.247173 0.136137 -0.214793
+v  -0.132336 0.303648 -0.234929
+v  -0.141844 0.245329 -0.257277
+v  -0.148570 0.189138 -0.273084
+v  -0.151121 0.136137 -0.279080
+v  -0.032380 0.303648 -0.254665
+v  -0.032380 0.245329 -0.278891
+v  -0.032380 0.189138 -0.296026
+v  -0.032380 0.136137 -0.302526
+v  0.067576 0.303648 -0.234929
+v  0.077085 0.245329 -0.257277
+v  0.083811 0.189138 -0.273084
+v  0.086362 0.136137 -0.279080
+v  0.148433 0.303648 -0.180812
+v  0.165633 0.245329 -0.198013
+v  0.177799 0.189138 -0.210179
+v  0.182414 0.136137 -0.214793
+v  0.202549 0.303648 -0.099956
+v  0.224897 0.245329 -0.109465
+v  0.240704 0.189138 -0.116190
+v  0.246700 0.136137 -0.118741
+v  0.235799 0.091290 0.114103
+v  0.258329 0.091290 0.000000
+v  0.211815 0.058142 0.103899
+v  0.232330 0.058142 0.000000
+v  0.187832 0.035630 0.093694
+v  0.206332 0.035630 0.000000
+v  0.176930 0.022689 0.089056
+v  0.194515 0.022689 0.000000
+v  0.174023 0.091290 0.206403
+v  0.155564 0.058142 0.187944
+v  0.137106 0.035630 0.169485
+v  0.128715 0.022689 0.161095
+v  0.081723 0.091290 0.268178
+v  0.071519 0.058142 0.244195
+v  0.061315 0.035630 0.220212
+v  0.056676 0.022689 0.209310
+v  -0.032380 0.091290 0.290708
+v  -0.032380 0.058142 0.264710
+v  -0.032380 0.035630 0.238712
+v  -0.032380 0.022689 0.226894
+v  -0.146483 0.091290 0.268178
+v  -0.136278 0.058142 0.244195
+v  -0.126074 0.035630 0.220212
+v  -0.121436 0.022689 0.209310
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+v  -0.220324 0.058142 0.187944
+v  -0.201865 0.035630 0.169485
+v  -0.193475 0.022689 0.161095
+v  -0.300558 0.091290 0.114103
+v  -0.276575 0.058142 0.103899
+v  -0.252591 0.035630 0.093694
+v  -0.241690 0.022689 0.089056
+v  -0.323088 0.091290 0.000000
+v  -0.297090 0.058142 0.000000
+v  -0.271091 0.035630 0.000000
+v  -0.259274 0.022689 0.000000
+v  -0.300558 0.091290 -0.114103
+v  -0.276575 0.058142 -0.103899
+v  -0.252591 0.035630 -0.093694
+v  -0.241690 0.022689 -0.089056
+v  -0.238783 0.091290 -0.206403
+v  -0.220324 0.058142 -0.187944
+v  -0.201865 0.035630 -0.169485
+v  -0.193475 0.022689 -0.161095
+v  -0.146483 0.091290 -0.268178
+v  -0.136278 0.058142 -0.244195
+v  -0.126074 0.035630 -0.220212
+v  -0.121436 0.022689 -0.209310
+v  -0.032380 0.091290 -0.290708
+v  -0.032380 0.058142 -0.264710
+v  -0.032380 0.035630 -0.238712
+v  -0.032380 0.022689 -0.226894
+v  0.081723 0.091290 -0.268178
+v  0.071519 0.058142 -0.244195
+v  0.061315 0.035630 -0.220212
+v  0.056676 0.022689 -0.209310
+v  0.174023 0.091290 -0.206403
+v  0.155564 0.058142 -0.187944
+v  0.137106 0.035630 -0.169485
+v  0.128715 0.022689 -0.161095
+v  0.235799 0.091290 -0.114103
+v  0.211815 0.058142 -0.103899
+v  0.187832 0.035630 -0.093694
+v  0.176930 0.022689 -0.089056
+v  0.172188 0.014358 0.087038
+v  0.189374 0.014358 0.000000
+v  0.146842 0.007090 0.076254
+v  0.161899 0.007090 0.000000
+v  0.084213 0.001950 0.049607
+v  0.094008 0.001950 0.000000
+v  -0.032380 0.000000 0.000000
+v  0.125065 0.014358 0.157445
+v  0.105558 0.007090 0.137938
+v  0.057355 0.001950 0.089735
+v  0.054659 0.014358 0.204568
+v  0.043875 0.007090 0.179222
+v  0.017227 0.001950 0.116592
+v  -0.032380 0.014358 0.221754
+v  -0.032380 0.007090 0.194278
+v  -0.032380 0.001950 0.126387
+v  -0.119418 0.014358 0.204568
+v  -0.108634 0.007090 0.179222
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+f 432/695/433 436/696/437 437/697/438 433/698/434
+f 438/699/439 434/688/435 403/629/404
+f 434/690/435 438/700/439 439/701/440 435/691/436
+f 435/693/436 439/702/440 440/703/441 436/694/437
+f 436/696/437 440/704/441 441/705/442 437/697/438
+f 442/706/443 438/699/439 403/629/404
+f 438/707/439 442/708/443 443/709/444 439/710/440
+f 439/702/440 443/711/444 444/712/445 440/703/441
+f 440/713/441 444/714/445 445/715/446 441/716/442
+f 446/717/447 442/706/443 403/629/404
+f 442/708/443 446/718/447 447/719/448 443/709/444
+f 443/711/444 447/720/448 448/721/449 444/712/445
+f 444/714/445 448/722/449 449/723/450 445/715/446
+f 450/724/451 446/717/447 403/629/404
+f 446/718/447 450/725/451 451/726/452 447/719/448
+f 447/720/448 451/727/452 452/728/453 448/721/449
+f 448/722/449 452/729/453 453/730/454 449/723/450
+f 454/731/455 450/724/451 403/629/404
+f 450/725/451 454/732/455 455/733/456 451/726/452
+f 451/727/452 455/734/456 456/735/457 452/728/453
+f 452/729/453 456/736/457 457/737/458 453/730/454
+f 458/738/459 454/731/455 403/629/404
+f 454/732/455 458/739/459 459/740/460 455/733/456
+f 455/734/456 459/741/460 460/742/461 456/735/457
+f 456/736/457 460/743/461 461/744/462 457/737/458
+f 462/745/463 458/738/459 403/629/404
+f 458/739/459 462/746/463 463/747/464 459/740/460
+f 459/741/460 463/748/464 464/749/465 460/742/461
+f 460/743/461 464/750/465 465/751/466 461/744/462
+f 402/628/403 462/745/463 403/629/404
+f 462/752/463 402/630/403 405/633/406 463/753/464
+f 463/748/464 405/634/406 407/637/408 464/749/465
+f 464/754/465 407/638/408 409/641/410 465/755/466
+f 409/756/410 408/757/409 466/758/467 467/759/468
+f 467/759/468 466/758/467 468/760/469 469/761/470
+f 469/761/470 468/760/469 470/762/471 471/763/472
+f 471/763/472 470/762/471 472/764/473 473/765/474
+f 408/757/409 413/766/414 474/767/475 466/758/467
+f 466/758/467 474/767/475 475/768/476 468/760/469
+f 468/760/469 475/768/476 476/769/477 470/762/471
+f 470/762/471 476/769/477 477/770/478 472/764/473
+f 413/766/414 417/771/418 478/772/479 474/767/475
+f 474/767/475 478/772/479 479/773/480 475/768/476
+f 475/768/476 479/773/480 480/774/481 476/769/477
+f 476/769/477 480/774/481 481/775/482 477/770/478
+f 417/771/418 421/776/422 482/777/483 478/772/479
+f 478/772/479 482/777/483 483/778/484 479/773/480
+f 479/773/480 483/778/484 484/779/485 480/774/481
+f 480/774/481 484/779/485 485/780/486 481/775/482
+f 421/776/422 425/781/426 486/782/487 482/777/483
+f 482/777/483 486/782/487 487/783/488 483/778/484
+f 483/778/484 487/783/488 488/784/489 484/779/485
+f 484/779/485 488/784/489 489/785/490 485/780/486
+f 425/781/426 429/786/430 490/787/491 486/782/487
+f 486/782/487 490/787/491 491/788/492 487/783/488
+f 487/783/488 491/788/492 492/789/493 488/784/489
+f 488/784/489 492/789/493 493/790/494 489/785/490
+f 429/786/430 433/791/434 494/792/495 490/787/491
+f 490/787/491 494/792/495 495/793/496 491/788/492
+f 491/788/492 495/793/496 496/794/497 492/789/493
+f 492/789/493 496/794/497 497/795/498 493/790/494
+f 433/791/434 437/796/438 498/797/499 494/792/495
+f 494/792/495 498/797/499 499/798/500 495/793/496
+f 495/793/496 499/798/500 500/799/501 496/794/497
+f 496/794/497 500/799/501 501/800/502 497/795/498
+f 437/796/438 441/801/442 502/802/503 498/797/499
+f 498/797/499 502/802/503 503/803/504 499/798/500
+f 499/798/500 503/803/504 504/804/505 500/799/501
+f 500/799/501 504/804/505 505/805/506 501/800/502
+f 441/801/442 445/806/446 506/807/507 502/802/503
+f 502/802/503 506/807/507 507/808/508 503/803/504
+f 503/803/504 507/808/508 508/809/509 504/804/505
+f 504/804/505 508/809/509 509/810/510 505/805/506
+f 445/806/446 449/811/450 510/812/511 506/807/507
+f 506/807/507 510/812/511 511/813/512 507/808/508
+f 507/808/508 511/813/512 512/814/513 508/809/509
+f 508/809/509 512/814/513 513/815/514 509/810/510
+f 449/811/450 453/816/454 514/817/515 510/812/511
+f 510/812/511 514/817/515 515/818/516 511/813/512
+f 511/813/512 515/818/516 516/819/517 512/814/513
+f 512/814/513 516/819/517 517/820/518 513/815/514
+f 453/816/454 457/821/458 518/822/519 514/817/515
+f 514/817/515 518/822/519 519/823/520 515/818/516
+f 515/818/516 519/823/520 520/824/521 516/819/517
+f 516/819/517 520/824/521 521/825/522 517/820/518
+f 457/821/458 461/826/462 522/827/523 518/822/519
+f 518/822/519 522/827/523 523/828/524 519/823/520
+f 519/823/520 523/828/524 524/829/525 520/824/521
+f 520/824/521 524/829/525 525/830/526 521/825/522
+f 461/826/462 465/831/466 526/832/527 522/827/523
+f 522/827/523 526/832/527 527/833/528 523/828/524
+f 523/828/524 527/833/528 528/834/529 524/829/525
+f 524/829/525 528/834/529 529/835/530 525/830/526
+f 465/831/466 409/756/410 467/759/468 526/832/527
+f 526/832/527 467/759/468 469/761/470 527/833/528
+f 527/833/528 469/761/470 471/763/472 528/834/529
+f 528/834/529 471/763/472 473/765/474 529/835/530
+# 480 polygons - 32 triangles

test/index.js

+'use strict';
+
+const fs   = require('fs');
+const path = require('path');
+const test = require('ava');
+
+const {objToObjb, objbToObj} = require('./_lib');
+
+const HEADER = [0x1, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0];
+
+test('Empty', t => {
+	t.deepEqual(objToObjb(''), new Uint8Array(HEADER).buffer);
+});
+
+test('Ignore comments', t => {
+	const source = `
+	# Comment
+	`;
+	
+	t.deepEqual(objToObjb(source), new Uint8Array(HEADER).buffer);
+});
+
+test('v[1]', t => {
+	t.deepEqual(objbToObj(objToObjb('v 1 2 3')), `v 1 2 3
+`);
+});
+
+test('v[2]', t => {
+	t.deepEqual(objbToObj(objToObjb(`
+		v 1 2 3
+		v 4 5 6
+	`)), `v 1 2 3
+v 4 5 6
+`);
+});
+
+test('v empty', t => {
+	t.deepEqual(objbToObj(objToObjb(`v`)), `v 0 0 0\n`);
+});
+
+test('v(5)', t => {
+	t.deepEqual(objbToObj(objToObjb(`v 1 2 3 4 5`)), `v 1 2 3\n`);
+});
+
+test('vn[1]', t => {
+	t.deepEqual(objbToObj(objToObjb(`vn 1 2 3`)), `vn 1 2 3
+`);
+});
+
+test('vn[2]', t => {
+	t.deepEqual(objbToObj(objToObjb(`vn 1 2 3
+		vn 4 5 6
+	`)), `vn 1 2 3
+vn 4 5 6
+`);
+});
+
+test('vn empty', t => {
+	t.deepEqual(objbToObj(objToObjb(`vn`)), `vn 0 0 0\n`);
+});
+
+test('vn(5)', t => {
+	t.deepEqual(objbToObj(objToObjb(`vn 1 2 3 4 5`)), `vn 1 2 3\n`);
+});
+
+test('vt(u,v,w)[1]', t => {
+	t.deepEqual(objbToObj(objToObjb(`vt 1 2 3`)), `vt 1 2 3
+`);
+});
+
+test('vt(u,v,w)[2]', t => {
+	t.deepEqual(objbToObj(objToObjb(`vt 1 2 3
+		vt 4 5 6
+	`)), `vt 1 2 3
+vt 4 5 6
+`);
+});
+
+test('vt(u,v)[1]', t => {
+	t.deepEqual(objbToObj(objToObjb(`vt 1 2`)), `vt 1 2 0
+`);
+});
+
+test('vt(u,v)[2]', t => {
+	t.deepEqual(objbToObj(objToObjb(`vt 1 2
+		vt 3 4
+	`)), `vt 1 2 0
+vt 3 4 0
+`);
+});
+
+test('vt(u)[1]', t => {
+	t.deepEqual(objbToObj(objToObjb(`vt 1`)), `vt 1 0 0
+`);
+});
+
+test('vt(u)[2]', t => {
+	t.deepEqual(objbToObj(objToObjb(`vt 1
+		vt 2
+	`)), `vt 1 0 0
+vt 2 0 0
+`);
+});
+
+test('vt empty', t => {
+	t.deepEqual(objbToObj(objToObjb(`vt`)), `vt 0 0 0\n`);
+});
+
+test('vt(5)', t => {
+	t.deepEqual(objbToObj(objToObjb(`vt 1 2 3 4 5`)), `vt 1 2 3\n`);
+});
+
+test('g', t => {
+	t.deepEqual(objbToObj(objToObjb(`g group`)), `g group
+`);
+});
+
+test('g[2]', t => {
+	t.deepEqual(objbToObj(objToObjb(`g group1 group2`)), `g group1 group2
+`);
+});
+
+test('g empty', t => {
+	t.deepEqual(objbToObj(objToObjb(`g`)), `g \n`);
+});
+
+test('o', t => {
+	t.deepEqual(objbToObj(objToObjb(`o name`)), `o name
+`);
+});
+
+test('o[2]', t => {
+	t.deepEqual(objbToObj(objToObjb(`o name1 name2`)), `o name1 name2
+`);
+});
+
+test('o empty', t => {
+	t.deepEqual(objbToObj(objToObjb(`o`)), `o \n`);
+});
+
+test('s <number>', t => {
+	t.deepEqual(objbToObj(objToObjb(`s 1`)), `s 1
+`);
+});
+
+test('s off', t => {
+	t.deepEqual(objbToObj(objToObjb(`s off`)), `s off
+`);
+});
+
+test('s empty', t => {
+	t.deepEqual(objbToObj(objToObjb(`s`)), `s \n`);
+});
+
+test('f(3)(v,vt,vn)[1]', t => {
+	t.deepEqual(objbToObj(objToObjb(`f 1/2/3 4/5/6 7/8/9`)), `f 1/2/3 4/5/6 7/8/9
+`);
+});
+
+test('f(3)(v,vt)[1]', t => {
+	t.deepEqual(objbToObj(objToObjb(`f 1/2 3/4 5/6`)), `f 1/2 3/4 5/6
+`);
+});
+
+test('f(3)(v,vn)[1]', t => {
+	t.deepEqual(objbToObj(objToObjb(`f 1//2 3//4 5//6`)), `f 1//2 3//4 5//6
+`);
+});
+
+test('f(3)(v)[1]', t => {
+	t.deepEqual(objbToObj(objToObjb(`f 1 2 3`)), `f 1 2 3
+`);
+});
+
+test('f(4)(v,vt,vn)[1]', t => {
+	t.deepEqual(objbToObj(objToObjb(`f 1/2/3 4/5/6 7/8/9 10/11/12`)), `f 1/2/3 4/5/6 7/8/9 10/11/12
+`);
+});
+
+test('f(4)(v,vt)[1]', t => {
+	t.deepEqual(objbToObj(objToObjb(`f 1/2 3/4 5/6 7/8`)), `f 1/2 3/4 5/6 7/8
+`);
+});
+
+test('f(4)(v,vn)[1]', t => {
+	t.deepEqual(objbToObj(objToObjb(`f 1//2 3//4 5//6 7//8`)), `f 1//2 3//4 5//6 7//8
+`);
+});
+
+test('f(4)(v)[1]', t => {
+	t.deepEqual(objbToObj(objToObjb(`f 1 2 3 4`)), `f 1 2 3 4
+`);
+});
+
+test('f(3)(v,vt,vn)[2]', t => {
+	t.deepEqual(objbToObj(objToObjb(`f 1/2/3 4/5/6 7/8/9
+		f 10/11/12 13/14/15 16/17/18
+	`)), `f 1/2/3 4/5/6 7/8/9
+f 10/11/12 13/14/15 16/17/18
+`);
+});
+
+test('f(3)(v,vt)[2]', t => {
+	t.deepEqual(objbToObj(objToObjb(`f 1/2 3/4 5/6
+		f 7/8 9/10 11/12
+	`)), `f 1/2 3/4 5/6
+f 7/8 9/10 11/12
+`);
+});
+
+test('f(3)(v,vn)[2]', t => {
+	t.deepEqual(objbToObj(objToObjb(`f 1//2 3//4 5//6
+		f 7//8 9//10 11//12
+	`)), `f 1//2 3//4 5//6
+f 7//8 9//10 11//12
+`);
+});
+
+test('f(3)(v)[2]', t => {
+	t.deepEqual(objbToObj(objToObjb(`f 1 2 3
+		f 4 5 6
+	`)), `f 1 2 3
+f 4 5 6
+`);
+});
+
+test('f(4)(v,vt,vn)[2]', t => {
+	t.deepEqual(objbToObj(objToObjb(`f 1/2/3 4/5/6 7/8/9 10/11/12
+		f 13/14/15 16/17/18 19/20/21 22/23/24
+	`)), `f 1/2/3 4/5/6 7/8/9 10/11/12
+f 13/14/15 16/17/18 19/20/21 22/23/24
+`);
+});
+
+test('f(4)(v,vt)[2]', t => {
+	t.deepEqual(objbToObj(objToObjb(`f 1/2 3/4 5/6 7/8
+		f 9/10 11/12 13/14 15/16
+	`)), `f 1/2 3/4 5/6 7/8
+f 9/10 11/12 13/14 15/16
+`);
+});
+
+test('f(4)(v,vn)[2]', t => {
+	t.deepEqual(objbToObj(objToObjb(`f 1//2 3//4 5//6 7//8
+		f 9//10 11//12 13//14 15//16
+	`)), `f 1//2 3//4 5//6 7//8
+f 9//10 11//12 13//14 15//16
+`);
+});
+
+test('f(4)(v)[2]', t => {
+	t.deepEqual(objbToObj(objToObjb(`f 1 2 3 4
+		f 5 6 7 8
+	`)), `f 1 2 3 4
+f 5 6 7 8
+`);
+});
+
+test('Unknown file version', t => {
+	t.throws(() => {
+		objbToObj(new Uint8Array([2, 0, 0, 0, 0, 0, 0, 0]).buffer);
+	}, SyntaxError);
+});
+
+test('Invalid data structure', t => {
+	t.throws(() => {
+		objbToObj(new Uint8Array([1, 0]).buffer);
+	}, SyntaxError);
+});
+
+test('Should not stuck', t => {
+	t.timeout(1000);
+	
+	t.throws(() => {
+		objbToObj(new Uint8Array([...HEADER, 42]).buffer);
+	}, SyntaxError);
+});
+
+test('Teapot (float32)', t => {
+	const source = fs.readFileSync(path.join(__dirname, '_teapot.obj'), {encoding: 'utf8'});
+	
+	const buffer = objToObjb(source);
+	objbToObj(buffer);
+	
+	t.pass();
+});
+
+test('Teapot (float16)', t => {
+	const source = fs.readFileSync(path.join(__dirname, '_teapot.obj'), {encoding: 'utf8'});
+	
+	const buffer = objToObjb(source, {useFloat16: true});
+	objbToObj(buffer);
+	
+	t.pass();
+});