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UniformAnimator QML Type

The UniformAnimator type animates a uniform of a ShaderEffect.

This type was introduced in Qt 5.2.

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UniformAnimator QML Type

  • Import Statement: import QtQuick

  • Since:: Qt 5.2

  • Inherits:: Animator

  • Group: UniformAnimator is part of qtquick-transitions-animations

Detailed Description

Animator types are different from normal Animation types. When using an Animator, the animation can be run in the render thread and the property value will jump to the end when the animation is complete.

The value of the QML property defining the uniform is updated after the animation has finished.

The following snippet shows how to use a UniformAnimator together with a ShaderEffect item.

 
Sélectionnez
ShaderEffect {
    id: shader
    width: 50
    height: 50
    property variant t;
    UniformAnimator {
        target: shader
        uniform: "t"
        from: 0
        to: 1
        duration: 1000
        running: true
    }
    fragmentShader: "qrc:shader.frag.qsb"
}

It is also possible to use the on keyword to tie the UniformAnimator directly to a uniform of a ShaderEffect instance.

 
Sélectionnez
ShaderEffect {
    width: 50
    height: 50
    property variant t;
    UniformAnimator on t {
        from: 0
        to: 1
        duration: 1000
    }
    fragmentShader: "qrc:shader.frag.qsb"
}

See Also

Property Documentation

 

uniform : string

This property holds the name of the uniform to animate.

The value of the uniform must correspond to both a property on the target ShaderEffect and must be a uniform of type float in the fragment or vertex shader.

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