Glow and ChartView

[k.kustra]

Im trying to get glowing LineSeries in chartview. On the start everything is ok, but with every time when i update data(append new value to the series) glowing area is expanding. It looks like its overpaiting glow effect on glow effect. How to fix it ? Below my test code. Testing on raspberry pi 3. Gif with example execution

import QtQuick 2.0
import QtQuick.Controls 2.2
import QtCharts 2.2
import QtGraphicalEffects 1.0

Page {

    id: window
    visible: true
    width: 800
    height: 480
    property var index: 0
    LinearGradient {
        anchors.fill: parent
        start: Qt.point(0, 0)
        end: Qt.point(parent.width, 0)
        gradient: Gradient {
            GradientStop {
                position: 0.0
                color: "black"
            }
            GradientStop {
                position: 1.0
                color: "#011c3a"
            }
        }
    }
    ChartView {
        id: chartView
        backgroundColor: "transparent"
        anchors.fill: parent

        ValueAxis {
            id: valueAxisX
            min: 0
            max: 10
            visible: false
        }

        ValueAxis {
            id: valueAxisY
            min: 0
            max: 10
            visible: false
        }

        LineSeries {
            id: series
            axisX: valueAxisX
            axisY: valueAxisY
            color: "blue"
        }

        Glow {
            anchors.fill: chartView
            radius: 18
            samples: 37
            color: "#15bdff"
            source: chartView
        }
        Timer {
            interval: 500
            running: true
            repeat: true
            onTriggered: {
                series.append(index, index)
                index++
            }
        }
    }
}

[oria66]

Hello @k-kustra. Do you check this article. Maybe it would help...

Good luck.