about PathAnimation

[Cheng shi hua]

PathAnimation just supprt one target

how to Supports multiple targets?

Or have other solution?

[GrecKo]

Can you tell us a bit more a bout what you are trying to achieve so we can help you more easily?

[Cheng shi hua]

@GrecKo I want to realize the function similar to conveyor belt. I want to put an object on the conveyor belt, and the conveyor belt will transport the object according to its own path

[GrecKo]

For this I'd use a PathInterpolator for each object with a common Path.
You would then animate the progress property of the PathInterpolator and bind x and y of your objects to their PathInterpolator x and y.

[Cheng shi hua]

@GrecKo

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import QtQuick 2.0

Rectangle {
id: window
width: 320
height: 480

Canvas {
    id: canvas
    anchors.fill: parent
    antialiasing: true

    onPaint: {
        var context = canvas.getContext("2d")
        context.clearRect(0, 0, width, height)
        context.strokeStyle = "black"
        context.path = motionPath.path
        context.stroke()
    }
}

//! [0]
PathInterpolator {
    id: motionPath

    path: Path {
        startX: 50; startY: 50

        PathCubic {
            x: window.width - 50
            y: window.height - 50

            control1X: x; control1Y: 50
            control2X: 50; control2Y: y
        }

        onChanged: canvas.requestPaint()
    }

    SequentialAnimation on progress {
        running: true
        loops: -1
        PauseAnimation { duration: 1000 }
        NumberAnimation {
            id: progressAnim
            running: false
            from: 0; to: 1
            duration: 2000
            easing.type: Easing.InQuad
        }
    }
}
//! [0]

Rectangle {
    id: box

    width: 50; height: 50
    border.width: 1
    antialiasing: true

    //bind our attributes to follow the path as progress changes
    x: motionPath.x
    y: motionPath.y
    rotation: motionPath.angle
    transform: Translate { x: -box.width/2; y: -box.height/2 }

    Text {
        anchors.centerIn: parent
        text: "Box"
    }
}

Rectangle {
    id: box1

    width: 50; height: 50
    border.width: 1
    antialiasing: true

    //bind our attributes to follow the path as progress changes
    x: box.x-5
    y: box.y-5
    rotation: box.rotation
    transform: Translate { x: -box.width/2; y: -box.height/2 }

    Text {
        anchors.centerIn: parent
        text: "Box1"
    }
}

}

How can I make box1 follow the box
help~