- Qt 6.12
- Qt Quick 3D
- QML Types
- QtQuick3D.Particles3D
- ModelParticle3D
- Qt Quick 3D | Commercial or GPLv3

# ModelParticle3D QML Type

Particle using a Qt Quick 3D Model. More...

Import Statement: | `import QtQuick3D.Particles3D`
Since: | Qt 6.2
Inherits: | Particle3D

- List of all members, including inherited members

## Properties

- delegate : Component
- instanceTable : Instancing

## Detailed Description

The ModelParticle3D is a logical particle element that creates particles from a Qt Quick 3D Model component.

## Property Documentation

### delegate : Component

The delegate provides a template defining each object instantiated by the particle.

For example, to allocate 200 red cube particles:

     Component {
         id: particleComponent
         Model {
             source: "#Cube"
             scale: Qt.vector3d(0.2, 0.2, 0.2)
             materials: DefaultMaterial { }
         }
     }

     ModelParticle3D {
         id: particleRed
         delegate: particleComponent
         maxAmount: 200
         color: "#ff0000"
     }

### instanceTable : Instancing

The instanceTable provides access to the Instancing table of the model particle. ModelParticle3D uses an internal instance table to implement efficient rendering. This table can be applied to the instancing property of models that are not part of the particle system.

It is also possible to use this feature to provide an instancing table without showing any particles. This is done by omitting the delegate property. For example:

     ParticleSystem3D {
         id: psystem
         ModelParticle3D {
             id: particleRed
             maxAmount: 200
             color: "#ff0000"
             colorVariation: Qt.vector4d(0.5,0.5,0.5,0.5)
         }

         ParticleEmitter3D {
             particle: particleRed
             velocity: VectorDirection3D {
                 direction: Qt.vector3d(-20, 200, 0)
                 directionVariation: Qt.vector3d(20, 20, 20)
             }
             particleScale: 0.2
             emitRate: 20
             lifeSpan: 2000
         }
     }

     Model {
         source: "#Sphere"
         instancing: particleRed.instanceTable
         materials: PrincipledMaterial {
             baseColor: "yellow"
         }
     }