| /**************************************************************************** |
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| ** Copyright (C) 2017 The Qt Company Ltd. |
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| ** This file is part of the Qt3D module of the Qt Toolkit. |
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| |
| import Qt3D.Core 2.0 |
| import Qt3D.Render 2.0 |
| import Qt3D.Extras 2.0 |
| import QtQuick 2.4 as QQ2 |
| |
| Entity { |
| property int rotationTimeMs: 0 |
| property int entityIndex: 0 |
| property int entityCount: 0 |
| property int startAngle: 0 + 360 / entityCount * entityIndex |
| property bool needsNewMagnitude: true |
| property real magnitude: 0 |
| property real animWeight: 0 |
| |
| property color lowColor: "black" |
| property color highColor: "#b3b3b3" |
| property color barColor: lowColor |
| |
| property string entityAnimationsState: "stopped" |
| property bool entityAnimationsPlaying: true |
| |
| property var entityMesh: null |
| |
| onEntityAnimationsStateChanged: { |
| if (animationState == "paused") { |
| if (angleAnimation.running) |
| angleAnimation.pause() |
| if (barColorAnimations.running) |
| barColorAnimations.pause() |
| } else if (animationState == "playing"){ |
| needsNewMagnitude = true; |
| if (heightDecreaseAnimation.running) |
| heightDecreaseAnimation.stop() |
| if (angleAnimation.paused) { |
| angleAnimation.resume() |
| } else if (!entityAnimationsPlaying) { |
| magnitude = 0 |
| angleAnimation.start() |
| entityAnimationsPlaying = true |
| } |
| if (barColorAnimations.paused) |
| barColorAnimations.resume() |
| } else { |
| if (animWeight != 0) |
| heightDecreaseAnimation.start() |
| needsNewMagnitude = true |
| angleAnimation.stop() |
| barColorAnimations.stop() |
| entityAnimationsPlaying = false |
| } |
| } |
| |
| property Material barMaterial: PhongMaterial { |
| diffuse: barColor |
| ambient: Qt.darker(barColor) |
| specular: "black" |
| shininess: 1 |
| } |
| |
| property Transform angleTransform: Transform { |
| property real heightIncrease: magnitude * animWeight |
| property real barAngle: startAngle |
| |
| matrix: { |
| var m = Qt.matrix4x4() |
| m.rotate(barAngle, Qt.vector3d(0, 1, 0)) |
| m.translate(Qt.vector3d(1.1, heightIncrease / 2 - heightIncrease * 0.05, 0)) |
| m.scale(Qt.vector3d(0.5, heightIncrease * 15, 0.5)) |
| return m; |
| } |
| |
| property real compareAngle: barAngle |
| onBarAngleChanged: { |
| compareAngle = barAngle |
| |
| if (compareAngle > 360) |
| compareAngle = barAngle - 360 |
| |
| if (compareAngle > 180) { |
| parent.enabled = false |
| animWeight = 0 |
| if (needsNewMagnitude) { |
| // Calculate the ms offset where the bar will be at the center point of the |
| // visualization and fetch the correct magnitude for that point in time. |
| var offset = (90.0 + 360.0 - compareAngle) * (rotationTimeMs / 360.0) |
| magnitude = mediaPlayer.getNextAudioLevel(offset) |
| needsNewMagnitude = false |
| } |
| } else { |
| parent.enabled = true |
| // Calculate a power of 2 curve for the bar animation that peaks at 90 degrees |
| animWeight = Math.min((compareAngle / 90), (180 - compareAngle) / 90) |
| animWeight = animWeight * animWeight |
| if (!needsNewMagnitude) { |
| needsNewMagnitude = true |
| barColorAnimations.start() |
| } |
| } |
| } |
| } |
| |
| components: [entityMesh, barMaterial, angleTransform] |
| |
| //![0] |
| QQ2.NumberAnimation { |
| id: angleAnimation |
| target: angleTransform |
| property: "barAngle" |
| duration: rotationTimeMs |
| loops: QQ2.Animation.Infinite |
| running: true |
| from: startAngle |
| to: 360 + startAngle |
| } |
| //![0] |
| |
| QQ2.NumberAnimation { |
| id: heightDecreaseAnimation |
| target: angleTransform |
| property: "heightIncrease" |
| duration: 400 |
| running: false |
| from: angleTransform.heightIncrease |
| to: 0 |
| onStopped: barColor = lowColor |
| } |
| |
| property int animationDuration: angleAnimation.duration / 6 |
| |
| //![1] |
| QQ2.SequentialAnimation on barColor { |
| id: barColorAnimations |
| running: false |
| |
| QQ2.ColorAnimation { |
| from: lowColor |
| to: highColor |
| duration: animationDuration |
| } |
| |
| QQ2.PauseAnimation { |
| duration: animationDuration |
| } |
| |
| QQ2.ColorAnimation { |
| from: highColor |
| to: lowColor |
| duration: animationDuration |
| } |
| } |
| //![1] |
| } |