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/****************************************************************************
**
** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** $QT_BEGIN_LICENSE:BSD$
** 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."
**
** $QT_END_LICENSE$
**
****************************************************************************/
//Explosion.qml
import QtQuick 2.0
import Qt3D 1.0
import Qt3D.Shapes 1.0
Quad{
id: explosionItem
scale:5
transform: [
Rotation3D{
angle: 90
axis: Qt.vector3d(1, 0, 0)
},
LookAt{ subject: camPos}
]
//wrapper around the camera position
Item3D { id: camPos
position: cam.eye
}
NumberAnimation
{
running:true
target: program
property: "lifetime"
from: 0.0
to: 1.0;
duration: 1000
onRunningChanged: {
if (running==false) {
print("running changed");
explosionItem.destroy();
}
}
}
effect: program
ShaderProgram {
id: program
texture: "explo.png"
property real lifetime : 1.0
blending: true
vertexShader: "
attribute highp vec4 qt_Vertex;
uniform mediump mat4 qt_ModelViewProjectionMatrix;
attribute highp vec4 qt_MultiTexCoord0;
uniform mediump float textureOffsetX;
varying mediump vec4 texCoord;
void main(void)
{
gl_Position = qt_ModelViewProjectionMatrix * qt_Vertex;
texCoord.st = qt_MultiTexCoord0.st;
}
"
fragmentShader: "
varying highp vec4 texCoord;
uniform sampler2D qt_Texture0;
uniform mediump float lifetime;
void main(void)
{
mediump int life = int(lifetime*16.0);
mediump int row = int(mod(float(life),4.0));
mediump int column = int(float(life) / 4.0);
mediump vec4 textureColor = texture2D(qt_Texture0, vec2(texCoord.s/4.0+0.25*float(row) , 1.0-texCoord.t/4.0-0.25*float(column)));
gl_FragColor = textureColor;
}
"
}
}
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