修正内存泄漏,提供增量加载.

src/Utils.ts

@@ -1,15 +1,25 @@
-import { Viewer, createTemplateBoard, createEdge, DrawDimension } from ".";
-import { Geometry } from "three";
+import { Object3D } from "three";
+import { createTemplateBoard, DrawDimension, Viewer } from ".";
 
-export function LoadBoard(view: Viewer, data: any[])
+function dispose(m: Object3D)
 {
-    view.m_Scene.children.forEach(obj =>
-    {
-        let geo = obj["geometry"] as Geometry;
-        if (geo) geo.dispose();
-    })
-    view.m_Scene.children.length = 0;
+    //@ts-ignore
+    if (m.geometry)
+        //@ts-ignore
+        m.geometry.dispose();
 
+    m.children.forEach(o => dispose(o));
+}
+
+export function LoadBoard(view: Viewer, data: any[], clear: boolean = true)
+{
+    if (clear)
+    {
+        dispose(view.m_Scene);
+        view.m_Scene.children.length = 0;
+    }
+
+    if (data.length === 0) return;
     //加板
     let { meshs, edgesa } = createTemplateBoard(data);
     //加标注