增加地面，增加放置区域筛选逻辑

package-lock.json

@@ -10,6 +10,7 @@
       "dependencies": {
         "@babylonjs/core": "^9.3.1",
         "@babylonjs/loaders": "^9.3.1",
+        "@babylonjs/materials": "^9.8.0",
         "axios": "^1.6.0",
         "js-md5": "^0.8.3",
         "js-yaml": "^4.1.0",
@@ -38,6 +39,15 @@
         "babylonjs-gltf2interface": "^9.0.0"
       }
     },
+    "node_modules/@babylonjs/materials": {
+      "version": "9.8.0",
+      "resolved": "https://registry.npmjs.org/@babylonjs/materials/-/materials-9.8.0.tgz",
+      "integrity": "sha512-BqAUtI5QwoN1a/UdcEy1p83rL1vG30uPDnPDRkqtclFl4tWS6O2SEYb770/v2ekgDv4v0BwQvCIgfl2QjRijfw==",
+      "license": "Apache-2.0",
+      "peerDependencies": {
+        "@babylonjs/core": "^9.0.0"
+      }
+    },
     "node_modules/@esbuild/aix-ppc64": {
       "version": "0.21.5",
       "resolved": "https://registry.npmjs.org/@esbuild/aix-ppc64/-/aix-ppc64-0.21.5.tgz",