InstanceList QML Type

Allows manually specifying instancing in QML. 更多...

import 语句：	import QtQuick3D
继承：	Instancing

所有成员列表，包括继承成员

特性

instanceCount : int
instances : List<QtQuick3D::InstanceListEntry>

详细描述

The InstanceList type makes it possible to define an instance table manually in QML.

The following example creates an instance table with two items:

InstanceList {
    id: manualInstancing
    instances: [
        InstanceListEntry {
            position: Qt.vector3d(0, 0, -60)
            eulerRotation: Qt.vector3d(-10, 0, 30)
            color: "red"
        },
        InstanceListEntry {
            position: Qt.vector3d(50, 10, 100)
            eulerRotation: Qt.vector3d(0, 180, 0)
            color: "green"
        }
    ]
}

每个 InstanceListEntry is an object that can have property bindings and animations. This gives great flexibility, but also causes memory overhead. Therefore, it is not recommended to use InstanceList for procedurally generated tables containing thousands (or millions) of instances. Also, any property change to an entry will cause the entire instance table to be recalculated and uploaded to the GPU.

另请参阅 RandomInstancing and QQuick3DInstancing .

特性文档编制

[since 6.3] instanceCount : int

This read-only property contains the number of instances in the list.

This property was introduced in Qt 6.3.

instances : List < QtQuick3D::InstanceListEntry >

This property contains the list of instance definitions. Modifying this list, or any of its elements, will cause the instance table to be updated.