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Diffstat (limited to 'examples/qt3d/audio-visualizer-qml/BarEntity.qml')
| -rw-r--r-- | examples/qt3d/audio-visualizer-qml/BarEntity.qml | 187 |
1 files changed, 187 insertions, 0 deletions
diff --git a/examples/qt3d/audio-visualizer-qml/BarEntity.qml b/examples/qt3d/audio-visualizer-qml/BarEntity.qml new file mode 100644 index 000000000..b9c8857ae --- /dev/null +++ b/examples/qt3d/audio-visualizer-qml/BarEntity.qml @@ -0,0 +1,187 @@ +/**************************************************************************** +** +** 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 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] +} |