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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the Qt3D module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL3$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see http://www.qt.io/terms-conditions. For further
** information use the contact form at http://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPLv3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or later as published by the Free
** Software Foundation and appearing in the file LICENSE.GPL included in
** the packaging of this file. Please review the following information to
** ensure the GNU General Public License version 2.0 requirements will be
** met: http://www.gnu.org/licenses/gpl-2.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
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]
}
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