main.qml Example File | Qt Quick 5.9

Qt 5.9 | Qt Quick | Scene Graph - Graph | main.qml Example File

Qt 5.9.2 Reference Documentation

# main.qml Example File

scenegraph/graph/main.qml

      /****************************************************************************
      **
      ** Copyright (C) 2015 The Qt Company Ltd.
      ** Contact: http://www.qt.io/licensing/
      **
      ** This file is part of the examples of the Qt Toolkit.
      **
      ** $QT_BEGIN_LICENSE:BSD$
      ** You may use this file under the terms of the BSD license as follows:
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      **     from this software without specific prior written permission.
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      import QtQuick 2.0

      import Graph 1.0

      Item {
          width: 800
          height: 400

          Graph {
              id: graph
              anchors.fill: parent
              anchors.margins: 100

              function newSample(i) {
                  return (Math.sin(i / 100.0 * Math.PI * 2) + 1) * 0.4 + Math.random() * 0.05;
              }

              Component.onCompleted: {
                  for (var i=0; i<100; ++i)
                      appendSample(newSample(i));
              }

              property int offset: 100;
          }

          Timer {
              id: timer
              interval: 500
              repeat: true
              running: true
              onTriggered: {
                  graph.removeFirstSample();
                  graph.appendSample(graph.newSample(++graph.offset));
              }

          }

          Rectangle {
              anchors.fill: graph
              color: "transparent"
              border.color: "black"
              border.width: 2
          }

      }