From 8f34e8a62ad3a50aa65d47600b074fc23ed438e0 Mon Sep 17 00:00:00 2001
From: yuanjiajia <1139393632@qq.com>
Date: Wed, 12 Jul 2023 18:12:28 +0800
Subject: [PATCH] =?UTF-8?q?=E6=B8=B2=E6=9F=93=E6=B5=8B=E5=BC=8F=20?=
 =?UTF-8?q?=E5=BC=80=E5=8F=91?=
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---
 examples/matRenderTest.php |  2 +-
 examples/renderTest.php    |  2 +-
 src/utils/MatHelper.php    | 78 +++++++++++++++++++++++++++++++++++---
 3 files changed, 75 insertions(+), 7 deletions(-)

diff --git a/examples/matRenderTest.php b/examples/matRenderTest.php
index ed46ef0..6c15015 100644
--- a/examples/matRenderTest.php
+++ b/examples/matRenderTest.php
@@ -68,7 +68,7 @@ function createLuxcoreMat($matOriginal, $textureScaleU, $textureScaleV, $cacheFi
         case 2:
             return MatHelper::createMatOfGlass($matOriginal, $textureScaleU, $textureScaleV, $cacheFileDir, $scene);
         case 3:
-            return;
+            return MatHelper::createMatOfTranslucent($matOriginal, $textureScaleU, $textureScaleV, $cacheFileDir, $scene);
         case 4:
             return;
     }
diff --git a/examples/renderTest.php b/examples/renderTest.php
index 0015649..54126c8 100644
--- a/examples/renderTest.php
+++ b/examples/renderTest.php
@@ -68,7 +68,7 @@ function createLuxcoreMat($matOriginal, $textureScaleU, $textureScaleV, $cacheFi
         case 2:
             return MatHelper::createMatOfGlass($matOriginal, $textureScaleU, $textureScaleV, $cacheFileDir, $scene);
         case 3:
-            return;
+            return MatHelper::createMatOfTranslucent($matOriginal, $textureScaleU, $textureScaleV, $cacheFileDir, $scene);
         case 4:
             return;
     }
diff --git a/src/utils/MatHelper.php b/src/utils/MatHelper.php
index 57f723d..dcaab9c 100644
--- a/src/utils/MatHelper.php
+++ b/src/utils/MatHelper.php
@@ -4,6 +4,7 @@ namespace Blobt\Luxcore\utils;
 
 use Blobt\Luxcore\scene\materials\Disney;
 use Blobt\Luxcore\scene\materials\GlassRough;
+use Blobt\Luxcore\scene\materials\GlossyTranslucent;
 use Blobt\Luxcore\scene\texture\composite\Subtract;
 use Blobt\Luxcore\scene\texture\mapping\Mapping;
 use Blobt\Luxcore\scene\texture\procedural\ImageMap;
@@ -305,8 +306,75 @@ class MatHelper{
     /**
      * 创建一个半透明材质
      */
-    static function createMatOfTranslucent(){
+    static function createMatOfTranslucent($matOriginal, $textureScaleU, $textureScaleV, $cacheFileDir, $scene){
+        $material = new GlossyTranslucent();
+        $material->setTransmission(
+            self::hex2floatColor($matOriginal->matParams->translucencyColor),
+            $matOriginal->matParams->translucencyIntensity
+        );
+        $material->setBaseColor(
+            self::hex2floatColor($matOriginal->matParams->translucencyColor),
+            1 - $matOriginal->matParams->translucencyIntensity
+        );
+        $material->setUroughness($matOriginal->matParams->roughness);
+        $material->setVroughness($matOriginal->matParams->roughness);
+
+
+        //创建一个铺贴对象,使用"uvmapping2d"类型的铺贴对象
+        $mapping = new Mapping();
+        $mapping->useUVMapping2d(
+            // uv通道
+            0,
+            // 旋转角度
+            "0",
+            // 缩放比例
+            "{$textureScaleU} {$textureScaleV}",
+            // 偏移量
+            "0 0",
+        );
+
+        // // 加载 透射 纹理
+        // if($matOriginal->matParams->translucencyTexture){
+        //     $textureUrl = $matOriginal->matParams->translucencyTexture;
+        //     $textureSavaPath = $cacheFileDir.'/'.basename($textureUrl);
+        //     $textureHandle = fopen($textureSavaPath, "w");
+        //     (new Client())->get($textureUrl, [RequestOptions::SINK => $textureHandle]);
+
+        //     $imageMap = new ImageMap(
+        //         ['file' => $textureSavaPath]
+        //     );
+        //     $imageMap->mapping = $mapping;
+        //     $scene->registerTexture($imageMap);
+        //     $material->setTransmission($imageMap);
+        // }
+
+        // 加载金属度纹理、粗糙度纹理 
+        if($matOriginal->matParams->metallicTexture){
+            $metallicTextureUrl = $matOriginal->matParams->metallicTexture;
+            $metallicTextureSavaPath = $cacheFileDir.'/'.basename($metallicTextureUrl);
+            $metallicTextureHandle = fopen($metallicTextureSavaPath, "w");
+            (new Client())->get($metallicTextureUrl, [RequestOptions::SINK => $metallicTextureHandle]);
 
+            $fileName = preg_replace('/(\.[^\.]+)$/','',basename($metallicTextureSavaPath));
+            $extension = preg_replace('/^('.$fileName.')+/','',basename($metallicTextureSavaPath));
+            // 从金属纹理中 分离 绿色通道 作为 粗糙度纹理
+            $roughnessTextureSavaPath = $cacheFileDir.'/'.$fileName.'_roughness'.$extension;
+            $imagick = new Imagick($metallicTextureSavaPath);
+            $imagick->separateImageChannel(Imagick::CHANNEL_GREEN);
+            $imagick->setImageCompressionQuality(100);
+            $imagick->writeImage($roughnessTextureSavaPath);
+            $roughnessTexture = new ImageMap(
+                ['file' => $roughnessTextureSavaPath]
+            );
+            $roughnessTexture->gamma = 1;
+            $roughnessTexture->mapping = $mapping;
+            $scene->registerTexture($roughnessTexture);
+            $material->setUroughness($roughnessTexture);
+            $material->setVroughness($roughnessTexture);
+        }
+
+
+        return $material;
     }
 
 
@@ -321,12 +389,12 @@ class MatHelper{
     /**
      * 十六进制颜色 转换为 浮点数颜色
      */
-    static function hex2floatColor($hexColor){
+    static function hex2floatColor($hexColor, $scale = 1){
         $floatColor = '';
         $hexColor = trim($hexColor);
-        $r = (hexdec(substr($hexColor, 1, 2))/255) ** 2.2;
-        $g = (hexdec(substr($hexColor, 3, 2))/255) ** 2.2;
-        $b = (hexdec(substr($hexColor, 5, 2))/255) ** 2.2;
+        $r = (hexdec(substr($hexColor, 1, 2))/255) ** 2.2 * $scale;
+        $g = (hexdec(substr($hexColor, 3, 2))/255) ** 2.2 * $scale;
+        $b = (hexdec(substr($hexColor, 5, 2))/255) ** 2.2 * $scale;
         $floatColor = "$r $g $b";
         return $floatColor;
     }