[Heini]

Hi,

it seems that the LineItems opacity property does not work. Setting it to 0 does not hide the line, while visible:false works fine. The problem is, that I would like to fade it out with a NumberAnimation, so I need to use opacity.

Greetings

Heini

[AlexFelgo Team]

Hi Heini,

i created 2 examples with which i just checked your issue, both work for me. Please try them too and let me know if there are also any issues.

1. Move slider to change the opacity of the LineItem

import VPlay 1.0
import QtQuick 1.1
GameWindow {
  id: window
  width: 960
  height: 640
  Scene {
    id: mainScene
    width: 480
    height: 320

    Column {
      anchors.right: parent.right
      width: 200
      Text {
        text: "opacity "+slider.value
        color: "white"
      }
      Slider {
        id: slider
        width: parent.width
        minimumValue: 0
        maximumValue: 1
        defaultValue: 1
        stepSize: 0.1
      }
    }

    LineItem {
      opacity: slider.value
      points: [
        {"x":100, "y":100},
        {"x":300, "y":300}
      ]
    }
  }
}

 

2. The LineItem fades in and out every second

import VPlay 1.0
import QtQuick 1.1

GameWindow {
  id: window
  width: 960
  height: 640
  Scene {
    id: mainScene
    width: 480
    height: 320

    LineItem {
      id: lineItem
      points: [
        {"x":100, "y":100},
        {"x":300, "y":300}
      ]
      Behavior on opacity {
        NumberAnimation{duration: 500}
      }
    }

    Timer {
      interval: 1000
      running: true
      repeat: true
      onTriggered: {
        lineItem.opacity = lineItem.opacity === 0 ? 1 : 0
      }
    }
  }
}

Cheers,
Alex

 

[Heini]

Hi Alex,

i tryed both examples, but none of them is working for me. The LineItems opacity does not change when moving the slider or when the timer triggerted.

Thanks

Heini

[Heini]

Hi,

 

updating to the latest Felgo version solved this problem.

 

Cheers

Heini