add remove in copperMScene

Author: LinkunGao

src/Scene/copperMScene.ts

@@ -78,6 +78,9 @@ export default class copperMScene extends commonScene {
           return;
         }
       },
+      remove(id) {
+        if (this.cache[id]) delete this.cache[id];
+      },
     };
     this.init();
   }
@@ -321,6 +324,9 @@ export default class copperMScene extends commonScene {
 
     this.setViewPoint(this.camera as THREE.PerspectiveCamera);
   }
+  removePreRenderCallbackFunction(id: number) {
+    this.preRenderCallbackFunctions.remove(id);
+  }
 
   resetView() {
     this.controls.reset();