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# PHASEShape.Element

An object that describes the characteristics of a physical surface.

```
class Element
```

## Overview

This class defines the material that makes up a [`PHASEShape`](/documentation/PHASE/PHASEShape) object.

You don’t instantiate instances of this class yourself; the framework creates an instance of this class for every material you pass into the [`init(engine:mesh:materials:)`](/documentation/PHASE/PHASEShape/init(engine:mesh:materials:)) initializer. The shape’s [`elements`](/documentation/PHASE/PHASEShape/elements) array provides read-only access to the instances.

## Topics

### Specifying a Meterial

[`material`](/documentation/PHASE/PHASEShape/Element/material)

A surface characteristic that determines the acoustic properties of an object.

## Relationships

### Conforms To

[`Equatable`](/documentation/Swift/Equatable)

[`CVarArg`](/documentation/Swift/CVarArg)

[`Hashable`](/documentation/Swift/Hashable)

[`CustomDebugStringConvertible`](/documentation/Swift/CustomDebugStringConvertible)

[`NSObjectProtocol`](/documentation/ObjectiveC/NSObjectProtocol)

[`CustomStringConvertible`](/documentation/Swift/CustomStringConvertible)

### Inherits From

[`NSObject-swift.class`](/documentation/ObjectiveC/NSObject-swift.class)

---

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