修正内存泄漏,提供增量加载.

dist/Utils.js

@@ -1,13 +1,21 @@
 "use strict";
 Object.defineProperty(exports, "__esModule", { value: true });
 var _1 = require(".");
-function LoadBoard(view, data) {
-    view.m_Scene.children.forEach(function (obj) {
-        var geo = obj["geometry"];
-        if (geo)
-            geo.dispose();
-    });
-    view.m_Scene.children.length = 0;
+function dispose(m) {
+    //@ts-ignore
+    if (m.geometry)
+        //@ts-ignore
+        m.geometry.dispose();
+    m.children.forEach(function (o) { return dispose(o); });
+}
+function LoadBoard(view, data, clear) {
+    if (clear === void 0) { clear = true; }
+    if (clear) {
+        dispose(view.m_Scene);
+        view.m_Scene.children.length = 0;
+    }
+    if (data.length === 0)
+        return;
     //加板
     var _a = _1.createTemplateBoard(data), meshs = _a.meshs, edgesa = _a.edgesa;
     //加标注