1

examples/app-global.js

@@ -203,8 +203,8 @@ const isModelExists = (modelId) => {
     return kernel.model.exists(modelId);
 }
 
-//换棚子
-const executeEvent2 = async (result) => {
+//一般是换棚子/换颜色/显示放置区域
+ const executeEvent2 = async (result) => {
     const kernel = getKernel();
 
     // 检查是否有模型更换事件
@@ -214,10 +214,10 @@ const executeEvent2 = async (result) => {
     let modelAlreadyExists = false;
     if (hasModelChange) {
         const firstModelEvent = result.data.events.find(e => e.event_type === 'change_model');
-        if (firstModelEvent) {
-            const { category } = firstModelEvent.target_data;
-            modelAlreadyExists = isModelExists(category);
-            console.log(`检查模型 ${category} 是否存在:`, modelAlreadyExists);
+        if (firstModelEvent && firstModelEvent.target_data) {
+            const {name, category } = firstModelEvent.target_data;
+            modelAlreadyExists = kernel.model.exists(name+'_'+category);
+            console.log(`检查模型 ${name+'_'+category} 是否存在:`, modelAlreadyExists);
         }
     }
 
@@ -241,12 +241,10 @@ const executeEvent2 = async (result) => {
             };
 
             const { id, name, file_url, model_control_type, category, placement_zone } = target_data;
-            console.log('替换百叶模型:', event);
-            console.log('替换百叶模型类型:', category);
 
             // 如果模型已存在，跳过加载
             if (modelAlreadyExists) {
-                console.log(`模型 ${category} 已存在，跳过加载`);
+                console.log(`模型 ${name+'_'+category} 已存在，跳过加载`);
                 continue;
             }
 
@@ -269,7 +267,7 @@ const executeEvent2 = async (result) => {
                 modelControlType: model_control_type,
             })
 
-            console.log(`百叶模型已放置为 ${name}`);
+            console.log(`模型已放置为 ${name}`);
         }
     }
 

examples/index.global.js

@@ -355762,14 +355762,26 @@ clipPos=viewProjection*worldPos;previousClipPos=previousViewProjection*previousW
             const color = Color3.FromHexString(options.albedoColor);
             material.albedoColor.copyFrom(color);
           }
-          if (options.albedoTexture) {
-            material.albedoTexture = new Texture(options.albedoTexture);
+          if (options.albedoTexture !== void 0) {
+            if (options.albedoTexture) {
+              material.albedoTexture = new Texture(options.albedoTexture);
+            } else {
+              material.albedoTexture = null;
+            }
           }
-          if (options.normalMap) {
-            material.bumpTexture = new Texture(options.normalMap);
+          if (options.normalMap !== void 0) {
+            if (options.normalMap) {
+              material.bumpTexture = new Texture(options.normalMap);
+            } else {
+              material.bumpTexture = null;
+            }
           }
-          if (options.metallicTexture) {
-            material.metallicTexture = new Texture(options.metallicTexture);
+          if (options.metallicTexture !== void 0) {
+            if (options.metallicTexture) {
+              material.metallicTexture = new Texture(options.metallicTexture);
+            } else {
+              material.metallicTexture = null;
+            }
           }
           if (options.roughness !== void 0) {
             material.roughness = options.roughness;
@@ -357185,6 +357197,19 @@ clipPos=viewProjection*worldPos;previousClipPos=previousViewProjection*previousW
          */
         removeAll: () => {
           this.mainApp.appModel.removeAll();
+        },
+        /**
+         * 检查模型是否已加载
+         * @param modelId 模型ID
+         * @returns 模型是否存在
+         * @example
+         * // 检查模型是否已加载，避免重复加载
+         * if (!kernel.model.exists('shed_001')) {
+         *   await kernel.model.add({ modelId: 'shed_001', modelUrl: '...' });
+         * }
+         */
+        exists: (modelId) => {
+          return this.mainApp.appModel.exists(modelId);
         }
       };
       /** 材质管理 */