From e7be05464134cb01ee3a9da428cada4758acd227 Mon Sep 17 00:00:00 2001
From: shuishen <1109946754@qq.com>
Date: Sat, 27 Sep 2025 15:53:54 +0800
Subject: [PATCH] feat:地形加载方式调整

---
 src/utils/cesium/publicCesium.js |   28 ++++++++++++++++++++++++----
 1 files changed, 24 insertions(+), 4 deletions(-)

diff --git a/src/utils/cesium/publicCesium.js b/src/utils/cesium/publicCesium.js
index 97b0f8a..7af504f 100644
--- a/src/utils/cesium/publicCesium.js
+++ b/src/utils/cesium/publicCesium.js
@@ -143,8 +143,28 @@
 		this.viewer?.cesiumWidget.screenSpaceEventHandler.removeInputAction(Cesium.ScreenSpaceEventType.LEFT_DOUBLE_CLICK) // 禁用双击
 
 		if (terrain) {
+			// 正则:第一位非0,第二位任意数字,后10位都是0
+			const re = /^[1-9]\d0{10}$/
+
+			let result = null
+
+			// 1️⃣先判断 areaCode
+			if (re.test(store.state.user.userInfo.detail.areaCode)) {
+				result = store.state.user.userInfo.detail.areaCode.slice(0, 6)
+			} else {
+				// 2️⃣如果不满足,从 ancestors 里找
+				const matchedItems = store.state.user.userInfo.detail.ancestors
+					.split(',')
+					.filter(item => re.test(item)) // 过滤出符合条件的
+
+				// 取第一个符合条件的前6位(可以改成 last one 看需求)
+				if (matchedItems.length > 0) {
+					result = matchedItems[0].slice(0, 6)
+				}
+			}
+
 			try {
-				Cesium.CesiumTerrainProvider.fromUrl(`${import.meta.env.VITE_APP_TERRAIN_URL}`, {
+				Cesium.CesiumTerrainProvider.fromUrl(`${import.meta.env.VITE_APP_TERRAIN_URL}${result}`, {
 					requestVertexNormals: true, // 启用地形法线增强立体感
 					requestWaterMask: true, // 启用水体遮罩效果
 				}).then(terrainProvider => {
@@ -209,7 +229,7 @@
 	async switchContour (open) {
 		if (open) {
 			await this.boundary?.openContour()
-			
+
 		} else {
 			this.boundary?.closeContour()
 		}
@@ -752,7 +772,7 @@
 			Cesium.Cartesian3.subtract(a, this.viewer?.camera.position, a),
 			Cesium.Cartesian3.normalize(r, r),
 			Cesium.Cartesian3.normalize(a, a)) : (r = c.direction,
-			a = h.direction)
+				a = h.direction)
 		let d = Cesium.Cartesian3.dot(r, a)
 			, p = 0
 		return d < 1 && (p = Math.acos(d)),
@@ -781,7 +801,7 @@
 				, r = Cesium.Math.acosClamped(-e)
 			a > 0 && a > r && (a = r - Cesium.Math.EPSILON4),
 				r = Cesium.Math.acosClamped(e),
-			a < 0 && -a > r && (a = -r + Cesium.Math.EPSILON4)
+				a < 0 && -a > r && (a = -r + Cesium.Math.EPSILON4)
 		}
 		return a
 	}

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