yuanjiajia
/
Luxcore
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity
Browse Source

已经修复转gltf模型时不能转大模型的bug

master
yuanjiajia 2 years ago
parent
e051cc4079
commit
12f8ebe016
2 changed files with 94 additions and 74 deletions
Whitespace
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
Unified View
Diff Options
Show Stats Download Patch File Download Diff File
  1. 14
      examples/loadObjDemo.php
  2. 154
      src/core/LoardObj.php

14
examples/loadObjDemo.php
View File

@ -6,17 +6,11 @@ namespace Blobt\Luxcore\core;
use Blobt\Luxcore\core\LoardObj; use Blobt\Luxcore\core\LoardObj;
include dirname(dirname(__FILE__)) . "/vendor/autoload.php"; include dirname(dirname(__FILE__)) . "/vendor/autoload.php";
ini_set('memory_limit','4096M'); ini_set('memory_limit','4096M');
$ply = new LoardObj('/home/yuanjiajia/Desktop/blender/test/6D.obj');
$ply = $ply->toGltf();
var_dump( $ply );
// $UUII = base64_decode("AAABAAIAAAAAAAAAAAAAAAAAAAAAAIA/AAAAAAAAAAAAAAAAAACAPwAAAAA=");
// $finfo = new \finfo(FILEINFO_MIME);
// echo $finfo->buffer($UUII) . "\n";
$transform = new LoardObj('/home/yuanjiajia/Desktop/blender/test/椅子.obj');
$transform->toGltf();
$transform = $transform->toPly();
var_dump( $transform );
?> ?>

154
src/core/LoardObj.php
View File

@ -10,39 +10,51 @@ class LoardObj
const OPEN = true; const OPEN = true;
const CLOSE = false; const CLOSE = false;
/** /**
* @var string $objFile obj文件路径 * @var string $objFile obj文件路径
*/ */
public $objFile;
private $objFile;
/** /**
* @var array 储存obj模型数据 * @var array 储存obj模型数据
*/ */
public $objData = [];
private $objData = [
'v' => [], // 顶点坐标数据，每行存储一个描述顶点xyz坐标的数组;
'vt' => [], // UV坐标数据，每行存储一个描述顶点 UV 坐标的数组;
'vn' => [], // 顶点法线数据，每行存储一个描述顶点xyz法线的数组;
'f' => [], // 面片数据，每行数据是对顶点坐标、顶点法线及UV坐标的素引。
];
/** /**
* @var array 储存ply模型数据
* @var array 1、储存ply模型数据，Ply文件头部数据（内容包括顶点数据、面数据、线数据、材质数据或其他数据的格式及属性）
* 2、顶点数据，每行数据描述了顶点的坐标、法线、及UV坐标;
* 3、索引顶点数据，每行数据描述了索引顶点的个数，及顶点数据的素引。
*/ */
public $plyData = [];
private $plyData = [];
/** /**
* @var array 储存gltf模型数据 * @var array 储存gltf模型数据
*/ */
public $gltfData = [
'asset' => '{ "version" : "2.0" }',
'scene' => 0,
'scenes' => [],
'nodes' => [],
'cameras' => [],
'skins' => [],
'meshes' => [],
'accessors' => [],
'bufferViews' => [],
'buffers' => [],
'material' => [],
'textures' => [],
'images' => [],
'samplers' => []
private $gltfData = [
'asset' => '{}', // 用这个对象{}，标识这是一个gltf文件,并说明其文件版本规范
'scene' => 0, // 用一个整数标识加载一个默认的场景
'scenes' => [], // 1、场景数组，解析一个gltf文件将从这里开始;
// 2、每一个元素值是一个对象类型，每一个对象描述了对 nodes数组 的元素索引，同时也是每一个场景的根节点;
'nodes' => [], // 节点数组，每一个元素值是一个对象类型，每一个对象描述一个 mesh(模型)、camera()或skin(蒙皮)
// 数组的元素索引;
'cameras' => [], // 相机数组，每一个元素值是一个对象类型，每一个对象是对一个相机的描述;
'skins' => [], // 蒙皮数组，每一个元素值是一个对象类型，每一个对象是对一个蒙皮的描述;
'meshes' => [], // 模型数组，每一个元素值是一个对象类型，每一个对象是对一个模型的描述;
'accessors' => [], // 访问器数组，每一个元素是一个对象类型，每一个对象描一段数据的格式或属性;
'bufferViews' => [], // 数据视图数组，每一个元素是一个对象类型，每一个对象描述一段切割数据的属性及用途;
'buffers' => [], // 缓存器数组，每一个元素是一个对象类型，每一个对象描述一个Base64编码的二进制数据缓存;
'material' => [], // 材质数组，每一个元素值是一个对象类型，每一个对象是对一个材质的描述;
'textures' => [], // 纹理数组，每一个元素值是一个对象类型，每一个对象是对一个纹理的描述;
'images' => [], // 图像数组，每一个元素值是一个对象类型，每一个对象是对一个图像的描述;
'samplers' => [] // 图像采样数组，每一个元素值是一个对象类型，每一个对象是对一个图像的描述。
]; ];
@ -75,11 +87,11 @@ class LoardObj
* @param string $path ply模型 保存路径 * @param string $path ply模型 保存路径
* @param string $format ply模型 保存格式 * @param string $format ply模型 保存格式
*/ */
public function toGltf( string $path = null,string $format = self::TYPE_BINARY)
public function toGltf( string $path = null)
{ {
$this->createGltf(); $this->createGltf();
if( $path == null) $path = getcwd()."/gltf"; if( $path == null) $path = getcwd()."/gltf";
return $this->writeGltf( $path, $format );
return $this->writeGltf( $path );
} }
@ -258,7 +270,7 @@ class LoardObj
} }
/** /**
* 利用已经拆分的 obj 模型数据，生成多个 gltf 模型，并将这些模型储存在 gltfData 数组中
* 利用已经拆分的 obj 模型数据，生成 gltf 模型，并将这些模型数据储存在 gltfData 数组中
*/ */
private function createGltf() private function createGltf()
{ {
@ -277,23 +289,30 @@ class LoardObj
$animation = null; $animation = null;
$meshCount = 0; $meshCount = 0;
$bufferCount = 0; $bufferCount = 0;
$maxX = -10000000;
$maxY = -10000000;
$maxZ = -10000000;
$minX = 10000000;
$minY = 10000000;
$minZ = 10000000;
$maxX = -100000000;
$maxY = -100000000;
$maxZ = -100000000;
$minX = 100000000;
$minY = 100000000;
$minZ = 100000000;
foreach( $this->objData['meshs'] as $meshs_key => $meshs_value ) foreach( $this->objData['meshs'] as $meshs_key => $meshs_value )
{ {
$lineFace = null;
$v = null;
$vt = null;
$vn = null;
$byteOffset = 0;
foreach( $meshs_value as $face_value ) // 生成顶点和面数据
$gltf['v'] = null;
$gltf['vt'] = null;
$gltf['vn'] = null;
$gltf['face'] = null;
$indexesList = [];
$vConst = 0;
foreach( $meshs_value as $face_value )
{ {
// 生成顶点和面数据
$face_value = implode('/', $face_value); $face_value = implode('/', $face_value);
$face_value = explode('/', $face_value); $face_value = explode('/', $face_value);
$lineFace = [];
$v = null;
$vt = null;
$vn = null;
foreach( $face_value as $v_key => $v_value ) foreach( $face_value as $v_key => $v_value )
{ {
switch( ($v_key+1) % 3 ) switch( ($v_key+1) % 3 )
@ -319,30 +338,31 @@ class LoardObj
default: default:
; ;
} }
$v .= pack('g',(float)$xyz_value);
} }
$lineFace .= pack('V',((int)$v_value) - 1);
$v = $this->objData['v'][$v_value-1];
break; break;
case 2: case 2:
if( $v_value == null )
{
$vt .= pack('g',(float)0.0000);
$vt .= pack('g',(float)0.0000);
}
else
{
foreach(array_slice($this->objData['vt'][$v_value-1],0,2) as $t_value)
{
$vt .= pack('g',(float)$t_value);
}
}
if( $v_value == null ) $vt = ['0.0000','0.0000'];
else $vt = array_slice($this->objData['vt'][$v_value-1],0,2);
break; break;
case 0; case 0;
foreach($this->objData['vn'][$v_value-1] as $n_value)
$vn = $this->objData['vn'][$v_value-1];
$hashVar = implode(' ',$v).' '.implode(' ',$vn).' '.implode(' ',$vt);
$hashVar = hash('md5', $hashVar);
if( !array_key_exists($hashVar, $indexesList) )
{ {
$vn .= pack('g',(float)$n_value);
foreach( $v as $valueP ) $gltf['v'] .= pack('g',(float)$valueP);
foreach( $vt as $valueT ) $gltf['vt'] .= pack('g',(float)$valueT);
foreach( $vn as $valueN ) $gltf['vn'] .= pack('g',(float)$valueN);
$lineFace[] = $vConst;
$indexesList[$hashVar] = $vConst;
$vConst++;
}
else
{
$lineFace[] = $indexesList[$hashVar];
} }
break; break;
@ -350,9 +370,16 @@ class LoardObj
; ;
} }
} }
foreach( $lineFace as $valueF ) $gltf['face'] .= pack('V',(int)$valueF);
} }
$vtnf = $v.$vn.$vt.$lineFace;
// 生成gltf语法格式，并与顶点、面片数据组织为一个gltf模型
$vLength = strlen($gltf['v']);
$vtLength = strlen($gltf['vt']);
$vnLength = strlen($gltf['vn']);
$vfLength = strlen($gltf['face']);
$vtnf = $gltf['v'].$gltf['vn'].$gltf['vt'].$gltf['face'];
$buffer = null; $buffer = null;
$buffer = "\t\t{\n"; $buffer = "\t\t{\n";
$buffer .= "\t\t\t\"byteLength\" : ".strlen($vtnf).",\n"; $buffer .= "\t\t\t\"byteLength\" : ".strlen($vtnf).",\n";
@ -368,7 +395,7 @@ class LoardObj
$byteOffset = 0; $byteOffset = 0;
$bufferView = "\t\t{\n"; $bufferView = "\t\t{\n";
$bufferView .= "\t\t\t\"buffer\" : ".$meshCount.",\n"; $bufferView .= "\t\t\t\"buffer\" : ".$meshCount.",\n";
$bufferView .= "\t\t\t\"byteLength\" : ".strlen($v).",\n";
$bufferView .= "\t\t\t\"byteLength\" : ".$vLength.",\n";
$bufferView .= "\t\t\t\"byteOffset\" : ".$byteOffset.",\n"; $bufferView .= "\t\t\t\"byteOffset\" : ".$byteOffset.",\n";
$bufferView .= "\t\t\t\"target\" : 34962\n"; $bufferView .= "\t\t\t\"target\" : 34962\n";
$bufferView .= "\t\t}"; $bufferView .= "\t\t}";
@ -378,7 +405,7 @@ class LoardObj
$accessor = "\t\t{\n"; $accessor = "\t\t{\n";
$accessor .= "\t\t\t\"bufferView\" : ".($bufferCount).",\n"; $accessor .= "\t\t\t\"bufferView\" : ".($bufferCount).",\n";
$accessor .= "\t\t\t\"componentType\" : 5126,\n"; $accessor .= "\t\t\t\"componentType\" : 5126,\n";
$accessor .= "\t\t\t\"count\" : ".(strlen($v) / 4 / 3).",\n";
$accessor .= "\t\t\t\"count\" : ".($vLength / 4 / 3).",\n";
$accessor .= "\t\t\t\"max\" :\n"; $accessor .= "\t\t\t\"max\" :\n";
$accessor .= "\t\t\t[\n"; $accessor .= "\t\t\t[\n";
$accessor .= "\t\t\t\t".$maxX.",\n"; $accessor .= "\t\t\t\t".$maxX.",\n";
@ -400,10 +427,10 @@ class LoardObj
$bufferView = null; $bufferView = null;
$byteOffset = $byteOffset + strlen($v);
$byteOffset = $byteOffset + $vLength;
$bufferView = "\t\t{\n"; $bufferView = "\t\t{\n";
$bufferView .= "\t\t\t\"buffer\" : ".$meshCount.",\n"; $bufferView .= "\t\t\t\"buffer\" : ".$meshCount.",\n";
$bufferView .= "\t\t\t\"byteLength\" : ".strlen($vn).",\n";
$bufferView .= "\t\t\t\"byteLength\" : ".$vnLength.",\n";
$bufferView .= "\t\t\t\"byteOffset\" : ".$byteOffset.",\n"; $bufferView .= "\t\t\t\"byteOffset\" : ".$byteOffset.",\n";
$bufferView .= "\t\t\t\"target\" : 34962\n"; $bufferView .= "\t\t\t\"target\" : 34962\n";
$bufferView .= "\t\t}"; $bufferView .= "\t\t}";
@ -413,7 +440,7 @@ class LoardObj
$accessor = "\t\t{\n"; $accessor = "\t\t{\n";
$accessor .= "\t\t\t\"bufferView\" : ".($bufferCount).",\n"; $accessor .= "\t\t\t\"bufferView\" : ".($bufferCount).",\n";
$accessor .= "\t\t\t\"componentType\" : 5126,\n"; $accessor .= "\t\t\t\"componentType\" : 5126,\n";
$accessor .= "\t\t\t\"count\" : ".(strlen($vn) / 4 / 3).",\n";
$accessor .= "\t\t\t\"count\" : ".($vnLength / 4 / 3).",\n";
$accessor .= "\t\t\t\"type\" : \"VEC3\"\n"; $accessor .= "\t\t\t\"type\" : \"VEC3\"\n";
$accessor .= "\t\t}"; $accessor .= "\t\t}";
$this->gltfData['accessors'][$bufferCount] = $accessor; $this->gltfData['accessors'][$bufferCount] = $accessor;
@ -424,10 +451,10 @@ class LoardObj
$bufferView = null; $bufferView = null;
$byteOffset = $byteOffset + strlen($vn);
$byteOffset = $byteOffset + $vnLength;
$bufferView = "\t\t{\n"; $bufferView = "\t\t{\n";
$bufferView .= "\t\t\t\"buffer\" : ".$meshCount.",\n"; $bufferView .= "\t\t\t\"buffer\" : ".$meshCount.",\n";
$bufferView .= "\t\t\t\"byteLength\" : ".strlen($vt).",\n";
$bufferView .= "\t\t\t\"byteLength\" : ".$vtLength.",\n";
$bufferView .= "\t\t\t\"byteOffset\" : ".$byteOffset.",\n"; $bufferView .= "\t\t\t\"byteOffset\" : ".$byteOffset.",\n";
$bufferView .= "\t\t\t\"target\" : 34962\n"; $bufferView .= "\t\t\t\"target\" : 34962\n";
$bufferView .= "\t\t}"; $bufferView .= "\t\t}";
@ -437,7 +464,7 @@ class LoardObj
$accessor = "\t\t{\n"; $accessor = "\t\t{\n";
$accessor .= "\t\t\t\"bufferView\" : ".($bufferCount).",\n"; $accessor .= "\t\t\t\"bufferView\" : ".($bufferCount).",\n";
$accessor .= "\t\t\t\"componentType\" : 5126,\n"; $accessor .= "\t\t\t\"componentType\" : 5126,\n";
$accessor .= "\t\t\t\"count\" : ".(strlen($vt) / 4 / 2).",\n";
$accessor .= "\t\t\t\"count\" : ".($vtLength / 4 / 2).",\n";
$accessor .= "\t\t\t\"type\" : \"VEC2\"\n"; $accessor .= "\t\t\t\"type\" : \"VEC2\"\n";
$accessor .= "\t\t}"; $accessor .= "\t\t}";
$this->gltfData['accessors'][$bufferCount] = $accessor; $this->gltfData['accessors'][$bufferCount] = $accessor;
@ -447,10 +474,10 @@ class LoardObj
$bufferView = null; $bufferView = null;
$byteOffset = $byteOffset + strlen($vt);
$byteOffset = $byteOffset + $vtLength;
$bufferView = "\t\t{\n"; $bufferView = "\t\t{\n";
$bufferView .= "\t\t\t\"buffer\" : ".$meshCount.",\n"; $bufferView .= "\t\t\t\"buffer\" : ".$meshCount.",\n";
$bufferView .= "\t\t\t\"byteLength\" : ".strlen($lineFace).",\n";
$bufferView .= "\t\t\t\"byteLength\" : ".$vfLength.",\n";
$bufferView .= "\t\t\t\"byteOffset\" : ".$byteOffset.",\n"; $bufferView .= "\t\t\t\"byteOffset\" : ".$byteOffset.",\n";
$bufferView .= "\t\t\t\"target\" : 34963\n"; $bufferView .= "\t\t\t\"target\" : 34963\n";
$bufferView .= "\t\t}"; $bufferView .= "\t\t}";
@ -460,7 +487,7 @@ class LoardObj
$accessor = "\t\t{\n"; $accessor = "\t\t{\n";
$accessor .= "\t\t\t\"bufferView\" : ".($bufferCount).",\n"; $accessor .= "\t\t\t\"bufferView\" : ".($bufferCount).",\n";
$accessor .= "\t\t\t\"componentType\" : 5125,\n"; $accessor .= "\t\t\t\"componentType\" : 5125,\n";
$accessor .= "\t\t\t\"count\" : ".(strlen($lineFace) / 4).",\n";
$accessor .= "\t\t\t\"count\" : ".($vfLength / 4).",\n";
$accessor .= "\t\t\t\"type\" : \"SCALAR\"\n"; $accessor .= "\t\t\t\"type\" : \"SCALAR\"\n";
$accessor .= "\t\t}"; $accessor .= "\t\t}";
$this->gltfData['accessors'][$bufferCount] = $accessor; $this->gltfData['accessors'][$bufferCount] = $accessor;
@ -596,7 +623,7 @@ class LoardObj
/** /**
* 将 $gltfData 数组中的gltf模型 写入硬盘 * 将 $gltfData 数组中的gltf模型 写入硬盘
*/ */
private function writeGltf( string $path, string $format )
private function writeGltf( string $path )
{ {
if( !is_dir($path) ) if( !is_dir($path) )
{ {
@ -643,6 +670,5 @@ class LoardObj
} }
fwrite($handle,"}\n"); fwrite($handle,"}\n");
fclose($handle); fclose($handle);
$handle = null;
} }
} }
Write Preview
Loading…
Cancel
Save