From a6e77c3d25754c77d52ac6656995dcd56412b0ff Mon Sep 17 00:00:00 2001
From: tengge1 <930372551@qq.com>
Date: Tue, 26 Mar 2019 22:13:53 +0800
Subject: [PATCH] =?UTF-8?q?=E4=B8=80=E4=BA=9B=E6=95=B0=E5=AD=A6=E5=87=BD?=
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---
 ShadowEditor.Web/src/gis/utils/MathUtils.js | 65 +++++++++++++++------
 1 file changed, 48 insertions(+), 17 deletions(-)

diff --git a/ShadowEditor.Web/src/gis/utils/MathUtils.js b/ShadowEditor.Web/src/gis/utils/MathUtils.js
index 38b1198b..c156065a 100644
--- a/ShadowEditor.Web/src/gis/utils/MathUtils.js
+++ b/ShadowEditor.Web/src/gis/utils/MathUtils.js
@@ -1,29 +1,60 @@
 import WGS84 from '../core/WGS84';
 
+/**
+ * 经纬度、海拔转笛卡尔坐标
+ * @param {THREE.Vector3} lonlat 经纬度、海拔
+ * @param {THREE.Vector3} xyz 笛卡尔坐标
+ */
+function lonlatToXYZ(lonlat, xyz) {
+    var lon = lonlat.x * Math.PI / 180;
+    var lat = lonlat.y * Math.PI / 180;
+    var r = WGS84.a + lonlat.z;
+
+    xyz.set(
+        r * Math.cos(lat) * Math.cos(lon),
+        r * Math.cos(lat) * Math.sin(lon),
+        r * Math.sin(lat),
+    );
+
+    return xyz;
+}
+
+/**
+ * 笛卡尔坐标转经纬度
+ * @param {THREE.Vector3} xyz 
+ * @param {THREE.Vector3} lonlat 
+ */
+function xyzToLonlat(xyz, lonlat) {
+
+}
+
+/**
+ * 层级转海拔
+ * @param {*} zoom 
+ */
+function zoomToAltitude(zoom) {
+
+}
+
+/**
+ * 海拔转层级
+ * @param {*} alt 
+ */
+function altitudeToZoom(alt) {
+
+}
+
 /**
  * 数学工具
  */
 var MathUtils = {
-    /**
-     * 经纬度海拔转笛卡尔坐标
-     */
-    lonlatToXYZ: function (lon, lat, alt) {
+    lonlatToXYZ,
 
-    },
+    xyzToLonlat,
 
-    /**
-     * 笛卡尔坐标转经纬度
-     */
-    xyzToLonlat: function (x, y, z) {
+    zoomToAltitude,
 
-    },
-
-    /**
-     * 层级转相机到地球表面距离
-     */
-    zoomToDistance: function (zoom) {
-        return 7820683 / Math.pow(2, level);
-    }
+    altitudeToZoom,
 };
 
 export default MathUtils;
\ No newline at end of file