diff --git a/examples/print.php b/examples/print.php
index 7b004ac..5aa2ccf 100644
--- a/examples/print.php
+++ b/examples/print.php
@@ -22,4 +22,11 @@ echo $native;
 $path = new Path(['glossinessthreshold' => 0.999]);
 echo $path;
 
+
+
+//设置打印 采样器 配置参数
+$sampler = new Sampler(['imagemutationrate' => 0.888]);
+$sampler->random->overlapping = 32;
+echo $sampler;
+
 ?>
diff --git a/src/core/Base.php b/src/core/Base.php
index 3afd41a..ff525d3 100644
--- a/src/core/Base.php
+++ b/src/core/Base.php
@@ -4,6 +4,12 @@ namespace Blobt\Luxcore\core;
 
 class Base
 {
+
+
+    //打开或关闭
+    const OPEN = true;
+    const CLOSE = false;
+    
     /**
      * 实现自动配置
      */
@@ -15,4 +21,5 @@ class Base
             }
         }
     }
+
 }
diff --git a/src/scene/BaseCfg.php b/src/scene/BaseCfg.php
index 68ad050..a9b96ea 100644
--- a/src/scene/BaseCfg.php
+++ b/src/scene/BaseCfg.php
@@ -38,20 +38,32 @@ class BaseCfg extends Base
             $name = implode(".", array_map('strtolower', StringHelper::camelStrToArray($name)));
             
             $value = $item->getValue($this);
-            if (is_string($value)) {
+            if (is_string($value)) 
+            {
                 $ret .= "{$className}.{$name} = \"{$value}\"\n";
-            } else if (is_integer($value)) {
+            } 
+            else if (is_integer($value)) 
+            {
                 $ret .= "{$className}.{$name} = {$value}\n";
-            } else if (is_bool($value)) {
+            } 
+            else if (is_bool($value)) 
+            {
                 $value = $value ? 1 : 0;
                 $ret .= "{$className}.{$name} = {$value}\n";
-            } else if (is_object($value) && $value instanceof  BaseCfg) {
+            }
+            else if (is_object($value) && $value instanceof  BaseCfg)
+            {
                 $ret .= $value->toString($className);
-            } else if(is_null($value)){
+            }
+            else if(is_null($value))
+            {
                 $ret .= "{$className}.{$name} = \"null\"\n";
-            } else if(is_float($value)){
+            } else if(is_float($value))
+            {
                 $ret .= "{$className}.{$name} = {$value}\n";
-            }else{            
+            }
+            else
+            {            
                 $ret .= "{$className}.{$name} = \"unknow type\"\n";
             }
         }
diff --git a/src/scene/HybridBackforWard.php b/src/scene/HybridBackforWard.php
index 5287dc2..7fbcc25 100644
--- a/src/scene/HybridBackforWard.php
+++ b/src/scene/HybridBackforWard.php
@@ -5,10 +5,6 @@ namespace Blobt\Luxcore\scene;
 class HybridBackforWard extends BaseCfg
 {
 
-    //打开或关闭
-    const OPEN = true;
-    const CLOSE = false;
-
     /**
      * @var bool 是否开启 自适应光线跟踪 参数设置
      */
diff --git a/src/scene/Metropolis.php b/src/scene/Metropolis.php
new file mode 100644
index 0000000..ea6c371
--- /dev/null
+++ b/src/scene/Metropolis.php
@@ -0,0 +1,26 @@
+<?php
+
+namespace Blobt\Luxcore\scene;
+use Blobt\Luxcore\core\Base;
+
+class Metropolis extends BaseCfg
+{
+
+    /**
+     * @var float TODO：具体作用尚不明确，（取值：0-1）
+     */
+    public $largesteprate = 0.4;
+
+    /**
+     * @var integer TODO：具体作用尚不明确，（取值：大于0的整数）
+     */
+    public $maxconsecutivereject = 512;
+
+    /**
+     * @var float TODO：具体作用尚不明确，（取值：0-1）
+     */
+    public $imagemutationrate = 0.1;
+
+}
+
+?>
diff --git a/src/scene/OpenCL.php b/src/scene/OpenCL.php
index f99fb07..76a1d14 100644
--- a/src/scene/OpenCL.php
+++ b/src/scene/OpenCL.php
@@ -4,19 +4,14 @@ namespace Blobt\Luxcore\scene;
 
 class OpenCL extends BaseCfg
 {
-
-
-    //打开或关闭
-    const OPEN = 1;
-    const CLOSE = 0;
     
     /**
-     * @var integral 是否使用cpu渲染，默认是
+     * @var bool 是否使用cpu渲染，默认是
      */
     public $cpuUse = self::CLOSE;
 
     /**
-     * @var integral 是否使用gpu渲染，默认否
+     * @var bool 是否使用gpu渲染，默认否
      */
     public $gpuUse = self::OPEN;
 
diff --git a/src/scene/Path.php b/src/scene/Path.php
index 22a1b5f..7044a28 100644
--- a/src/scene/Path.php
+++ b/src/scene/Path.php
@@ -6,11 +6,6 @@ use Blobt\Luxcore\core\Base;
 class Path extends BaseCfg
 {
 
-
-    //打开或关闭
-    const OPEN = true;
-    const CLOSE = false;
-    
     /**
      * @var object 存储一个 PathDepth类 对象
      */
@@ -31,6 +26,10 @@ class Path extends BaseCfg
      */
     public $clampingVarianceMaxvalue = 1000;
 
+    /**
+     * @var integer $maxdepth 当渲染引擎为 BIDIR 时，光线跟踪的最大深度(取值：大于0的整数)
+     */
+    public $maxdepth = 10;
 
     /**
      * 实例 PathDepth类、HybridBackforWard类的两个对象
diff --git a/src/scene/Random.php b/src/scene/Random.php
new file mode 100644
index 0000000..33609a1
--- /dev/null
+++ b/src/scene/Random.php
@@ -0,0 +1,52 @@
+<?php
+
+namespace Blobt\Luxcore\scene;
+use Blobt\Luxcore\core\Base;
+
+class Random extends BaseCfg
+{
+
+    /**
+     * “progressive”的优化类型，每过程每像素采样1个样本
+     */
+    const PROGRESSIVE = 1;
+    /**
+     * “cache-friendly”的优化类型，每过程每像素采样32个样本
+     */
+    const CACHE_FRIENDLY = 32;
+    
+    //2的n次方
+    const POW_TWO_ZERO = 1;
+    const POW_TWO_TWO = 4;
+    const POW_TWO_THREE = 8;
+    const POW_TWO_FOUR = 16;
+    const POW_TWO_FIVE = 32;
+    const POW_TWO_SIX = 64;
+    
+    /**
+     * @var integer TODO:初步分析为每过程每像素采样的样本数
+     */
+    public $overlapping = self::PROGRESSIVE;
+
+    /**
+     * @var integer 这是 “$overlapping”参数的倍数
+     */
+    public $superSampling = self::POW_TWO_ZERO;
+
+    /**
+     * @var integer TODO：具体作用尚不明确，
+     */
+    public $tileSize = 16;
+
+    /**
+     * @var integer TODO：具体作用尚不明确，
+     */
+    public $bucketSize = 1;
+
+    /**
+     * @var float 区分完全采样与自适应彩样的阀值（取值0-0.95的小数）
+     */
+    public $adaptiveStrength = 0.9;
+}
+
+?>
diff --git a/src/scene/Sampler.php b/src/scene/Sampler.php
new file mode 100644
index 0000000..5c1349e
--- /dev/null
+++ b/src/scene/Sampler.php
@@ -0,0 +1,43 @@
+<?php
+
+namespace Blobt\Luxcore\scene;
+use Blobt\Luxcore\core\Base;
+
+class Sampler extends BaseCfg
+{
+
+    //渲染器的两个采样类型：SOBOL和RANDOM
+    const TYPE_SOBOL = 'SOBOL';
+    const TYPE_METROPOLIS = 'METROPOLIS';
+    const TYPE_RANDOM = 'RANDOM';
+    const TYPE_TILEPATHSAMPLER = 'TILEPATHSAMPLER';
+    
+ 
+    
+
+    /**
+     * @var string 使用何种采样类型，默认是 SOBOL
+     */
+    public $type = self::TYPE_SOBOL;
+
+    /**
+     * @var object 一个 Random类 或 Sobol类 的实例对象
+     */
+    public $sobol;
+    public $random;
+    public $metropolis;
+
+
+
+    /**
+     * 实例 PathDepth类、HybridBackforWard类的两个对象
+     */
+    public function __construct($config = [])
+    {
+        $this->sobol = new Sobol($config);
+        $this->random = new Random($config);
+        $this->metropolis = new Metropolis($config);
+        Base::__construct($config);
+    }
+
+}
diff --git a/src/scene/Sobol.php b/src/scene/Sobol.php
new file mode 100644
index 0000000..911a589
--- /dev/null
+++ b/src/scene/Sobol.php
@@ -0,0 +1,51 @@
+<?php
+
+namespace Blobt\Luxcore\scene;
+use Blobt\Luxcore\core\Base;
+
+class Sobol extends BaseCfg
+{   
+    /**
+     * “progressive”的优化类型，每过程每像素采样1个样本
+     */
+    const PROGRESSIVE = 1;
+    /**
+     * “cache-friendly”的优化类型，每过程每像素采样32个样本
+     */
+    const CACHE_FRIENDLY = 32;
+    
+    //2的n次方
+    const POW_TWO_ZERO = 1;
+    const POW_TWO_TWO = 4;
+    const POW_TWO_THREE = 8;
+    const POW_TWO_FOUR = 16;
+    const POW_TWO_FIVE = 32;
+    const POW_TWO_SIX = 64;
+    
+    /**
+     * @var integer TODO:初步判断为每过程每像素采样的样本数
+     */
+    public $overlapping = self::PROGRESSIVE;
+
+    /**
+     * @var integer 这是 “$overlapping”参数的倍数
+     */
+    public $superSampling = self::POW_TWO_ZERO;
+
+    /**
+     * @var integer TODO：具体作用尚不明确
+     */
+    public $tileSize = 16;
+
+    /**
+     * @var integer TODO：具体作用尚不明确
+     */
+    public $bucketSize = 1;
+
+    /**
+     * @var float 在图像中区分完全采样与自适应彩样的阀值（取值0-0.95的小数）
+     */
+    public $adaptiveStrength = 0.9;
+}
+
+?>
\ No newline at end of file