> For the complete documentation index, see [llms.txt](https://docs.renderdraw.us/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.renderdraw.us/api-documentation/3d-components-api/events-aura/evt_renderer_get_hierarchy.md).

# EVT\_Renderer\_Get\_Hierarchy

### RDraw:EVT\_Renderer\_Get\_Hierarchy

#### Usage Notes

This event is raised when the **getHierarchy** method is called on the AdvancedRenderer component. A parameter is passed back (data) that represents the 3D structure of the Scene being rendered.

#### Parameters

| **NAME**    | **TYPE** | **REQUIRED** | **DESCRIPTION**                                                                          |
| ----------- | -------- | ------------ | ---------------------------------------------------------------------------------------- |
| data        | object   |              | The JSON hierarchical representation of the 3D scene                                     |
| transaction | string   |              | A transaction identifier for correlating the get-hierarchy call with downstream handlers |

#### Source Component

* SimpleRenderer

#### Handler Component

* AdminVisualSceneParameters
* AdvancedRenderer
* AdminVisualSceneSetup

#### Event Name (for handler)

```xml
<aura:handler event="RDraw:EVT_Renderer_Get_Hierarchy" action="{!c.handleGetHierarchy}" />
```

#### Example Usage

Component

```
<aura:component implements="lightning:availableForFlowScreens,flexipage:availableForAllPageTypes,force:hasRecordId"
   access="public">
    <aura:handler name="componentSelected" event="RDraw:EVT_Renderer_Mesh_Selected"
        action="{!c.handleComponentSelected}" />
    <aura:handler name="selectionCleared" event="RDraw:EVT_Renderer_Mesh_Selection_Cleared"
        action="{!c.handleSelectionCleared}" />
    <aura:handler name="getCameraPostionandTarget" event="RDraw:EVT_Renderer_Get_CameraPositionandTarget"
        action="{!c.handleGetCameraPositionsandTarget}" />
    <aura:handler name="hierarchyFetched" event="RDraw:EVT_Renderer_Get_Hierarchy" action="{!c.handleGetHierarchy}" />

<RDraw:AdvancedRenderer aura:id="renderer" displayContext="true" spitShine="true"
    allowSelection="true" recordId="{!v.recordId}" size="Medium">
   <aura:set attribute="contextContent">
       <lightning:card title="Get Hierarchy">
          <p class="slds-p-horizontal_small">
              <!-- button for image replacement -->
              <lightning:button title="Get Hierarchy"
                  onclick="{!c.handleTestGetHierarchy}">Get Hierarchy
              </lightning:button>
          </p>
      </lightning:card>
   </aura:set>
</aura:component>
```

Controller

```
({
    handleTestGetHierarchy: function (component, event, helper) {
        let renderer = component.find('renderer');
        renderer.getHierarchy();
    },
    handleGetHierarchy: function (component, event, helper) {
        alert(JSON.stringify(event.getParam('data'), null, 2))
    },
    
    handleGetCameraPositionsandTarget: function (component, event, helper) {
        alert(JSON.stringify(event.getParam('data'), null, 2))
    },
     handleComponentSelected: function (component, event, helper) {
        alert('Selected name = ' + event.getParams().name);
        //todo do something with the selected component data like fetch salesforce data 
    },
    
})
```