- Qt 6.8
- Qt Quick 3D Physics
- QML Types
- PhysicsMaterial
- Qt Quick 3D Physics | Commercial or GPLv3

# PhysicsMaterial QML Type

Defines the physics material of a body. More...

Import Statement: | `import QtQuick3D.Physics`
Since: | Qt 6.4

- List of all members, including inherited members

## Properties

- dynamicFriction : float
- restitution : float
- staticFriction : float

## Detailed Description

The PhysicsMaterial type determines how objects interact when they touch.

Friction uses the Coulomb friction model, which is based around the concepts of 2 coefficients: the static friction coefficient and the dynamic friction coefficient (sometimes called kinetic friction). Friction resists relative lateral motion of two solid surfaces in contact. These two coefficients define a relationship between the normal force exerted by each surface on the other and the amount of friction force that is applied to resist lateral motion. While most real-world materials have friction coefficients between `0` and `1`, values above `1` are not uncommon. The properties accept any real number greater or equal to `0`.

Restitution determines how objects bounce when they collide.

## Property Documentation

dynamicFriction : float

This property defines the amount of friction applied between surfaces that are moving relative to each-other.

Default value: `0.5`

Range: `[0, inf]`

restitution : float

This property defines the coefficient of restitution, or how bouncy the material is. The coefficient of restitution of two colliding objects is a fractional value representing the ratio of speeds after and before an impact, taken along the line of impact. A coefficient of restitution of 1 is said to collide elastically, while a coefficient of restitution < 1 is said to be inelastic.

Default value: `0.5`

Range: `[0, 1]`

staticFriction : float

This property defines the amount of friction that is applied between surfaces that are not moving lateral to each-other.

Default value: `0.5`

Range: `[0, inf]`