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/****************************************************************************
**
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtQuick3D examples of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** 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 Nokia Corporation 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 1.0
import Qt3D 1.0
Viewport {
property string name: "Collapsing Shader"
property string icon: "images/teapot-logo.png"
width: 640; height: 480
Item3D {
mesh: Mesh { source: "meshes/teapot.bez" }
effect: program
transform: Rotation3D {
NumberAnimation on angle{
running: true
loops: Animation.Infinite
from: 0
to: 360
duration: 8000
}
axis: Qt.vector3d(1, -0.3, 0)
}
ShaderProgram {
id: program
property real collapseFactor : 0.0
SequentialAnimation on collapseFactor {
running: true
loops: Animation.Infinite
PauseAnimation { duration: 700 }
NumberAnimation { from: 0.0; to: 1.0; duration: 1500; easing.type:"OutBounce" }
PauseAnimation { duration: 700 }
NumberAnimation { from: 1.0; to: 0.0; duration: 1500; easing.type:"OutBounce" }
}
texture: "images/qtlogo.png"
SequentialAnimation on color{
running: true
loops: Animation.Infinite
ColorAnimation {
from: "#00008a"
to: "#003333"
duration: 5000
}
ColorAnimation {
from: "#003333"
to: "#00008a"
duration: 5000
}
}
vertexShader: "
attribute highp vec4 qt_Vertex;
attribute highp vec4 qt_MultiTexCoord0;
uniform mediump mat4 qt_ModelViewProjectionMatrix;
varying highp vec4 texCoord;
uniform highp float collapseFactor;
void main(void)
{
// Interpolate between the actual position of the input vertex
// and treating the tex-coordinates as vertex positions to
// create a neat collapsing effect.
vec4 workingPosition = mix( qt_Vertex, vec4(-qt_MultiTexCoord0.xyz, 1.0) , collapseFactor);
gl_Position = qt_ModelViewProjectionMatrix * workingPosition;
texCoord = -qt_MultiTexCoord0;
}
"
fragmentShader: "
varying highp vec4 texCoord;
uniform sampler2D qt_Texture0;
uniform mediump vec4 qt_Color;
void main(void)
{
mediump vec4 col = texture2D(qt_Texture0, texCoord.st);
gl_FragColor = vec4(clamp(qt_Color.rgb * (1.0 - col.a) +
col.rgb, 0.0, 1.0), 1.0);
}
"
}
}
}
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