Add visible polyfill, collapse-model

src/components/AltspaceComponent.js

@@ -267,4 +267,8 @@ class AltspaceComponent extends AFrameComponent
 	}
 }
 
+AFRAME.components.visible.Component.prototype.update = () => {
+	this.el.object3D.traverse(obj => obj.visible = this.data);
+}
+
 export default AltspaceComponent;

src/components/CollapseModel.js

@@ -0,0 +1,29 @@
+import {AFrameComponent} from './AFrameComponent';
+
+/**
+* Reaches into a model's hierarchy and directly assigns the first mesh found
+* to the containing entity. This is mostly necessary for use alongside native
+* components like [n-skeleton-parent]{@link module:altspace/components.n-skeleton-parent}. @aframe
+*
+* @alias collapse-model
+* @memberof module:altspace/components
+* @extends module:altspace/components.AFrameComponent
+*/
+export default class CollapseModel extends AFrameComponent
+{
+	init()
+	{
+		function getFirstMesh(obj){
+			if(obj.isMesh)
+				return obj;
+			else if(obj.children.length === 0)
+				return null;
+			else
+				return obj.children.map(c => getFirstMesh(c)).find(o => !!o);
+		}
+
+		this.el.addEventListener('model-loaded', () => {
+			this.el.setObject3D('mesh', getFirstMesh(this.el.object3DMap.mesh));
+		});
+	}
+}

src/components/index.js

@@ -44,7 +44,7 @@ import NContainer from './NContainer';
 import NPortal from './NPortal';
 import NSound from './NSound';
 import NLayoutBrowser from './NLayoutBrowser';
-import {CollapseModel} from './UtilComponents';
+import CollapseModel from './CollapseModel';
 
 if (window.AFRAME)
 {