From f109caee76d2a0387d70c8a6d7fadbe98589fc6e Mon Sep 17 00:00:00 2001
From: yuanjiajia <1139393632@qq.com>
Date: Thu, 6 Jul 2023 14:39:46 +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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---
 src/utils/MatHelper.php | 55 ++++++++++++++++++++++++++++++++++++++---
 1 file changed, 51 insertions(+), 4 deletions(-)

diff --git a/src/utils/MatHelper.php b/src/utils/MatHelper.php
index 91fb068..b33946b 100644
--- a/src/utils/MatHelper.php
+++ b/src/utils/MatHelper.php
@@ -3,6 +3,7 @@
 namespace Blobt\Luxcore\utils;
 
 use Blobt\Luxcore\scene\materials\Disney;
+use Blobt\Luxcore\scene\texture\composite\Subtract;
 use Blobt\Luxcore\scene\texture\mapping\Mapping;
 use Blobt\Luxcore\scene\texture\procedural\ImageMap;
 use Blobt\Luxcore\scene\texture\transform\NormalMap;
@@ -41,20 +42,20 @@ class MatHelper{
         }
 
 
-        // 创建一个铺贴对象
+        //创建一个铺贴对象,使用"uvmapping2d"类型的铺贴对象
         $mapping = new Mapping();
-        // 使用"uvmapping2d"类型的铺贴对象            
         $mapping->useUVMapping2d(
             // uv通道
             0,
             // 旋转角度
             "0",
             // 缩放比例
-            "$textureScaleU $textureScaleV",
+            "{$textureScaleU} {$textureScaleV}",
             // 偏移量
             "0 0",
         );
 
+        // 加载反照率（基础颜色）纹理
         if($matOriginal->matParams->albedoTexture){
             $textureUrl = $matOriginal->matParams->albedoTexture;
             $textureSavaPath = $cacheFileDir.'/'.basename($textureUrl);
@@ -68,6 +69,8 @@ class MatHelper{
             $scene->registerTexture($albedoTexture);
             $material->setBaseColor($albedoTexture);
         }
+
+        // 加载金属度纹理、粗糙度纹理 
         if($matOriginal->matParams->metallicTexture){
             $metallicTextureUrl = $matOriginal->matParams->metallicTexture;
             $metallicTextureSavaPath = $cacheFileDir.'/'.basename($metallicTextureUrl);
@@ -103,6 +106,8 @@ class MatHelper{
             $scene->registerTexture($roughnessTexture);
             $material->setRoughness($roughnessTexture);
         }
+
+        // 加载法线纹理
         if($matOriginal->matParams->bumpTexture){
             $textureUrl = $matOriginal->matParams->bumpTexture;
             $textureSavaPath = $cacheFileDir.'/'.basename($textureUrl);
@@ -132,7 +137,6 @@ class MatHelper{
             $imagick->setImageCompressionQuality(100);
             $imagick->writeImage($textureInvertGPath);
 
-
             $bumpTexture = new ImageMap(
                 ['file' => $textureInvertGPath]
             );
@@ -147,6 +151,49 @@ class MatHelper{
             $material->setBumptex($normalTexture);
         }
 
+        // 加载清漆涂层纹理
+        if($matOriginal->matParams->isClearCoatEnabled === self::OPEN && $matOriginal->matParams->clearCoatTexture){
+            $textureUrl = $matOriginal->matParams->clearCoatTexture;
+            $savaTexturePath = $cacheFileDir.'/'.basename($textureUrl);
+            $savaTextureHandle = fopen($savaTexturePath, "w");
+            (new Client())->get($textureUrl, [RequestOptions::SINK => $savaTextureHandle]);
+        
+            $fileName = preg_replace('/(\.[^\.]+)$/','',basename($savaTexturePath));
+            $extension = preg_replace('/^('.$fileName.')+/','',basename($savaTexturePath));
+            // 从清漆涂层纹理中 分离 红色通道 作为 清漆涂层强度纹理
+            $coatIntensityTextureSavaPath = $cacheFileDir.'/'.$fileName.'_coatIntensity'.$extension;
+            $imagick = new Imagick($savaTexturePath);
+            $imagick->separateImageChannel(Imagick::CHANNEL_RED);
+            $imagick->setImageCompressionQuality(100);
+            $imagick->writeImage($coatIntensityTextureSavaPath);
+            $coatIntensityTexture = new ImageMap(
+                ['file' => $coatIntensityTextureSavaPath]
+            );
+            $coatIntensityTexture->gamma = 1;
+            $coatIntensityTexture->mapping = $mapping;
+            $scene->registerTexture($coatIntensityTexture);
+            $material->setClearcoat($coatIntensityTexture);
+            // 从清漆涂层纹理中 分离 绿色通道 作为 清漆涂层光泽度纹理
+            $coatGlossTextureSavaPath = $cacheFileDir.'/'.$fileName.'_coatGloss'.$extension;
+            $imagick = new Imagick($savaTexturePath);
+            $imagick->separateImageChannel(Imagick::CHANNEL_GREEN);
+            $imagick->setImageCompressionQuality(100);
+            $imagick->writeImage($coatGlossTextureSavaPath);
+            $coatGlossTexture = new ImageMap(
+                ['file' => $coatGlossTextureSavaPath]
+            );
+            $coatGlossTexture->gamma = 1;
+            $coatGlossTexture->mapping = $mapping;
+            $scene->registerTexture($coatGlossTexture);
+
+            $subtract = new Subtract();
+            $subtract->setTexture1("1");
+            $subtract-> setTexture2($coatGlossTexture);
+            $scene->registerTexture($subtract);
+            $material->setClearcoatgloss($subtract);
+        }
+
+
         //TODO： 更多贴图通道处理，待后续完善
 
         return $material;