已完成loadObj.php类文件编写，有bug尚未修复

.vscode/launch.json

@@ -1,6 +1,7 @@
 {
     "version": "0.2.0",
     "configurations": [
+        
         {
             "name": "Listen for XDebug",
             "type": "php",
@@ -11,7 +12,7 @@
             "name": "Launch currently open script",
             "type": "php",
             "request": "launch",
-            "program": "${workspaceFolder}/examples/configBatch.php",
+            "program": "${workspaceFolder}/examples/loadObjDemo.php",
             "cwd": "${workspaceFolder}",
             "port": 9055
         }

examples/loadObjDemo.php

@@ -0,0 +1,13 @@
+<?php
+
+
+
+namespace Blobt\Luxcore\core;
+use Blobt\Luxcore\core\LoardObj;
+
+include dirname(dirname(__FILE__)) . "/vendor/autoload.php";
+
+$ply = new LoardObj('/home/yuanjiajia/Desktop/blender/test/3D.obj');
+$ply->toPly(LoardObj::TYPE_BINARY);
+
+?>

src/core/LoardObj.php

@@ -2,56 +2,28 @@
 
 namespace Blobt\Luxcore\core;
 
-class Base
+class LoardObj
 {
 
-    const TYPE_TXT = 'txt';
-    const TYPE_BINARY = 'binary';
+    const TYPE_TXT = 'ascii 1.0';
+    const TYPE_BINARY = 'binary_little_endian 1.0';
     const OPEN = true;
     const CLOSE = false;
 
-
-
-
     /**
      * @var string $objFile obj文件路径
      */
     public $objFile;
 
     /**
-     * @var string $plyFile ply文件路径
+     * @var array 储存obj模型数据
      */
-    public $plyFile = [];
+    public $objData = [];
 
     /**
-     * @var string $format ply文件储存格式
+     * @var array 储存ply模型数据
      */
-    public $format = self::TYPE_TXT;
-
-    /**
-     * @var bool $flipYZ 是
-     */
-    public $flipYZ;
-
-    /**
-     * @var array $vertexs 顶点坐标数组
-     */
-    public $vertexs = [];
-
-    /**
-     * @var array $textureUV 纹理坐标数组
-     */
-    public $textureUV = [];
-
-    /**
-     * @var array $normals 顶点法线数组
-     */
-    public $normals = [];
-
-    /**
-     * @var array $faces 面片数组
-     */
-    public $mesh = [];
+    public $plyData = [];
 
 
 
@@ -60,24 +32,31 @@ class Base
      * @param string $objFile 传入obj文件
      * @param bool $flipYZ  是否翻转Z轴Y轴
      */
-    public function __construct(string $objFile,bool $flipYZ = self::OPEN)
+    public function __construct( string $objFile, bool $flipYZ = self::OPEN )
     {   
-        $this->file = $objFile;
-        $this->flipYZ = $flipYZ;
+        $this->objFile = $objFile;        
+        $this->readObj();
+        if( $flipYZ ) $this->flipYZ();
     }
 
-    public function toPly()
+    /**
+     * @param string $format 储存 ply模型 的格式
+     */
+    public function toPly( string $format = self::TYPE_BINARY)
     {
-        return $this->plyFile;
+        $this->createPly();
+        return $this->writePly($format);
     }
 
+    
     /**
-     * 
+     * 读取OBJ模型数据，并拆分模型
      */
-    public function readObj()
+    private function readObj()
     {
         $handle = null;
-        $line = true;
+        $line = null;
+        $keyName = null;
 
         
         if( !file_exists($this->objFile) )
@@ -86,7 +65,7 @@ class Base
         }
         else
         {
-            $handle = fopen($this->file,'r');
+            $handle = fopen($this->objFile,'r');
         }
         
 
@@ -96,44 +75,192 @@ class Base
         }
         else
         {   
-            
             fseek($handle, 0);
-            while( !feof($handle) ) // 读取所有的 顶点坐标、UV坐标、顶点法线，并存入到相应的数组
+            while( !feof($handle) )                                 // 读取所有的 顶点坐标、UV坐标、顶点法线、面片，并存入到相应的数组
             {
                 $line = fgets( $handle );
                 $line = ltrim( $line );
-                if( $line[0] == '#' ) continue;
-
-                switch( explode(' ', $line)[0] )
+                $line = explode(' ', $line);
+                switch( $line[0] )
                 {
                     case 'v':
-                        $this->vertexs[] = $line;
+                        array_shift($line);                         // 将 v 开头的数据行 存入顶点数组
+                        $this->objData['v'][] = $line;
+                        break;
 
                     case 'vn':
-                        $this->normals[] = $line;
+                        array_shift($line);                         // 将 vn 开头的数据行 存入顶点法线数组
+                        $this->objData['vn'][] = $line;
+                        break;
 
                     case 'vt':
-                        $this->textureUV[] = $line;
+                        array_shift($line);                         // 将 vt 开头的数据行 存入 UV坐标数组
+                        $this->objData['vt'][] = $line;
+                        break;
+                    
+                    case 'o':
+                        array_shift($line);                         // 将 o 开头的行（object名） 作为一个键名（按照 ‘o’ 关键字拆分OBJ模型）
+                        $line = implode("_", $line);
+                        $keyName = $line;
+                        break;
+                    
+                    case 'f':
+                        array_shift($line);                         // 将 f 开头的行 存入 ['meshs'][$keyName] 指向的数组
+                        $this->objData['meshs'][$keyName][] = $line;
+
+                    default:
+                        ;                                           // 丢弃无用的 数据行
                 }
             }
+        }
+
+    }
+
 
-            fseek($handle, 0);
-            while( !feof($handle) ) // 读取 顶点坐标、UV坐标、顶点法线，并存入到相应的数组
-            {
-                $line = fgets( $handle );
-                $line = ltrim( $line );
-                if( $line[0] == '#' ) continue;
 
-                if ( explode(' ', $line)[0] == 'o' )
+    
+    /**
+     * 翻转模型的YZ轴向
+     */
+    private function flipYZ()
+    {
+        foreach( $this->objData['v'] as $key => $value)
+        {
+            $this->objData['v'][$key] = [];
+            $this->objData['v'][$key][] = $value[0];
+            $this->objData['v'][$key][] = $value[2];
+            $this->objData['v'][$key][] = $value[1];
+        }
+    }
+
+
+
+
+    /**
+     * 利用已经拆分的 obj 模型数据，生成多个 ply 模型，并将这些模型储存在 plyData 数组中
+     */
+    private function createPly()
+    {
+        
+        foreach( $this->objData['meshs'] as $meshs_key => $meshs_value )
+        {   
+            var_dump($this->objData);
+            $ply = [];
+            $vCount = 0;
+            $fCount = 0;
+            
+            foreach( $meshs_value as $face_value )                                                          // 生成顶点和面数据
+            {   
+                $face_value = implode('/', $face_value);
+                $face_value = explode('/', $face_value);
+                $lineFace = [];
+                $v = [];
+                $vt = [];
+                $vn = [];
+                foreach( $face_value as $v_key =>  $v_value )
+                {   
+                    switch( ($v_key+1) % 3 )
+                    {
+                        case 1:
+                            $v = $this->objData['v'][$v_value-1];
+                            break;
+
+                        case 2:
+                            $vt = array_splice($this->objData['vt'][$v_value-1],2);
+                            break;
+
+                        case 0;
+                            $vn = $this->objData['vn'][$v_value-1];
+                            $ply['vertex'][$vCount] = implode(' ',$v).' '.implode(' ',$vn).' '.implode(' ',$vt);
+                            $lineFace[] = $vCount;
+                            $vCount++;
+                            break;
+                        
+                        default:
+                            ;
+                    }
+                }
+                $ply['face'][$fCount] = implode(' ',$lineFace);
+                $fCount++;
             }
 
+            $ply['header'][] = 'ply';                                                                   // 生成头部数据
+            $ply['header'][] = "format ";
+            $ply['header'][] = "comment Created by reaiyunju, source file: ''";
+            $ply['header'][] = "element vertex ".$vCount;
+            $ply['header'][] = "property float x";
+            $ply['header'][] = "property float y";
+            $ply['header'][] = "property float z";
+            $ply['header'][] = "property float nx";
+            $ply['header'][] = "property float ny";
+            $ply['header'][] = "property float nz";
+            $ply['header'][] = "property float s";
+            $ply['header'][] = "property float t";
+            $ply['header'][] = "element face ".count($ply['face']);
+            $ply['header'][] = "property list uchar uint vertex_indices";
+            $ply['header'][] = "end_header";
+
+            $this->plyData[$meshs_key] = $ply;                                                          // 在 数组plyData 中添加一个 $key 所指名称的ply模型
         }
 
+    }
+
 
+    /**
+     * 将 $plyData 数组中的ply模型 写入硬盘
+     */
+    private function writePly(string $format)
+    {
+        $plyFile = [];
+        $handle = null;
+        foreach( $this->plyData as $key => $value )
+        {
+            $plyFile[] = $key."ply";
+            $handle = fopen( $key."ply",'w+');
 
+            foreach( $value['header'] as $h_key => $h_value)                                            // 写入头部数据
+            {   
+                if( $h_key == 1 ) $data = $h_value.$format."\n";
+                else $data = $h_value."\n";
+                fwrite($handle,$data);
+            }
             
+            foreach( $value['vertex'] as $v_value )                                                     // 写入顶点数据
+            {
+                if( $format == self::TYPE_BINARY )                                                      // 二进制格试写入
+                {   
+                    foreach( explode(' ', $v_value) as $v )                                       
+                    {   
+                        $data .= pack('f',$v);
+                    }
+                    fwrite($handle,$data);
+                }
+                else
+                {
+                    $data = $v_value."\n";                                                              // 文本格试写入 
+                    fwrite($handle,$data);
+                }
+            }
 
+            foreach( $value['face'] as $f_value )                                                       // 写入面片数据
+            {
+                if( $format == self::TYPE_BINARY )                                                      // 二进制格试写入  
+                {   
+                    foreach( explode(' ', $f_value) as $v )
+                    {   
+                        $data .= pack('f',$v);
+                    }
+                    fwrite($handle,$data);
+                }
+                else
+                {
+                    $data = $f_value."\n";                                                              // 文本格试写入 
+                    fwrite($handle,$data);
+                }
+            }
+        }
 
+        return $plyFile;
     }
 
 }