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Diffstat (limited to 'basicsuite/qt5-launchpresentation/Swirl.qml')
-rw-r--r-- | basicsuite/qt5-launchpresentation/Swirl.qml | 116 |
1 files changed, 116 insertions, 0 deletions
diff --git a/basicsuite/qt5-launchpresentation/Swirl.qml b/basicsuite/qt5-launchpresentation/Swirl.qml new file mode 100644 index 0000000..710f04b --- /dev/null +++ b/basicsuite/qt5-launchpresentation/Swirl.qml @@ -0,0 +1,116 @@ +/**************************************************************************** +** +** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies). +** Contact: http://www.qt-project.org/legal +** +** This file is part of the Qt 5 launch demo. +** +** $QT_BEGIN_LICENSE:BSD$ +** You may use this file under the terms of the BSD license as follows: +** +** "Redistribution and use in source and binary forms, with or without +** modification, are permitted provided that the following conditions are +** met: +** * Redistributions of source code must retain the above copyright +** notice, this list of conditions and the following disclaimer. +** * Redistributions in binary form must reproduce the above copyright +** notice, this list of conditions and the following disclaimer in +** the documentation and/or other materials provided with the +** distribution. +** * Neither the name of Digia Plc and its Subsidiary(-ies) nor the names +** of its contributors may be used to endorse or promote products derived +** from this software without specific prior written permission. +** +** +** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +import QtQuick 2.0 + +ShaderEffect { + id: shader + + width: 400 + height: 300 + + property real speed: 1 + + property color d: Qt.rgba(Math.random() * 0.7, + Math.random() * 0.5, + Math.random() * 0.7, + Math.random() * 0.5) + property real tx + NumberAnimation on tx { from: 0; to: Math.PI * 2; duration: (Math.random() * 30 + 30) * 1000 / speed; loops: Animation.Infinite } + property real ty + NumberAnimation on ty { from: 0; to: Math.PI * 2; duration: (Math.random() * 30 + 30) * 1000 / speed; loops: Animation.Infinite } + property real tz + NumberAnimation on tz { from: 0; to: Math.PI * 2; duration: (Math.random() * 30 + 30) * 1000 / speed; loops: Animation.Infinite } + property real tw + NumberAnimation on tw { from: 0; to: Math.PI * 2; duration: (Math.random() * 30 + 30) * 1000 / speed; loops: Animation.Infinite } + + property real amplitude: height / 2 + + property variant colorTable: ShaderEffectSource { sourceItem: Rectangle { width: 4; height: 4; color: "green" } } + + fragmentShader: " + uniform lowp float qt_Opacity; + uniform lowp sampler2D colorTable; + varying highp vec2 qt_TexCoord0; + varying lowp float xx; + + void main() { + gl_FragColor = texture2D(colorTable, qt_TexCoord0); + gl_FragColor.xyz += xx * 0.1; + gl_FragColor *= qt_Opacity; + } + " + + vertexShader: " + uniform lowp vec4 d; + uniform highp float tx; + uniform highp float ty; + uniform highp float tz; + uniform highp float tw; + uniform highp float amplitude; + uniform highp mat4 qt_Matrix; + attribute highp vec4 qt_Vertex; + attribute highp vec2 qt_MultiTexCoord0; + varying highp vec2 qt_TexCoord0; + varying lowp float xx; + void main() { + highp vec4 pos = qt_Vertex; + + highp float y = sin(-tx + d.x * qt_MultiTexCoord0.x * 57. + 12. * d.y) + + sin(ty * 2.0 + d.z * qt_MultiTexCoord0.x * 21. + 5. * d.w) + + sin(tz * 4.0 + d.y * qt_MultiTexCoord0.x * 13. + 7.0 * d.x) + + sin(-ty * 8.0 + d.w * qt_MultiTexCoord0.x * 29. + 15. * d.z); + highp float x = sin(-tx + d.x * qt_MultiTexCoord0.x * 213. + 15. * d.y) + + sin(ty * 2.0 + d.z * qt_MultiTexCoord0.x * 107. + 12. * d.w) + + sin(tz * 4.0 + d.y * qt_MultiTexCoord0.x * 13. + 5. * d.x) + + sin(-ty * 8.0 + d.w * qt_MultiTexCoord0.x * 15. + 7. * d.z); + xx = x; + + pos.xy += vec2(x * sin(qt_MultiTexCoord0.x * 3.14152) * 0.3, + y * (1.0 - qt_MultiTexCoord0.y)) * amplitude; + + gl_Position = qt_Matrix * pos; + qt_TexCoord0 = qt_MultiTexCoord0; + } + " + + mesh: GridMesh { resolution: Qt.size(width / 10, 4) } + +} |