> For the complete documentation index, see [llms.txt](https://interopxyz.gitbook.io/three-plus/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://interopxyz.gitbook.io/three-plus/components/materials/material-maps/opacity-map.md).

# Opacity Map

Apply a Opacity Map

## Description

Apply a Opacity Map to a material

{% tabs %}
{% tab title="Preview" %}
![](https://2542354621-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FbH1SBOktQqL8caPM2Xpc%2Fuploads%2F1kCBtPnxUsc8FioRxsf0%2FMaterials-Map-Opacity.png?alt=media\&token=4b7e17ec-2302-4679-a5e6-a0aef97a4fcd)
{% endtab %}

{% tab title="Location" %}
**Name** | Opacity Map

**Nickname** | Opacity

**Tab** | ThreeJs

**Panel** | Materials

**Division** | 5
{% endtab %}

{% tab title="Inputs" %}
**M** | **Model Element** (*T+ Model*) | A Three Plus Model, Mesh, or Brep

**Am** | **Alpha Map** (*Bitmap*) | The alpha map is a grayscale texture that controls the opacity across the surface (black: fully transparent; white: fully opaque) (A System Drawing Bitmap or full file path to an image.)

**O** | **Opacity** (*Number*) | How transparent the material is. 0-1.
{% endtab %}

{% tab title="Ouputs" %}
**M** | **Model Element** (*T+ Model*) | The updated Three Plus Model Element
{% endtab %}

{% tab title="Mode" %}
*none*
{% endtab %}
{% endtabs %}

## Usage