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/****************************************************************************
**
** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/
**
** This file is part of the 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 2.0
import QtQuick.Particles 2.0
Item {
width: 360
height: 600
Image {
source: "../images/backgroundLeaves.jpg"
anchors.fill: parent
}
ParticleSystem {
id: sys
}
Emitter {
system: sys
width: parent.width
emitRate: 4
lifeSpan: 14000
size: 80
speed: PointDirection { y: 60 }
}
Wander {
system: sys
anchors.fill: parent
anchors.bottomMargin: 100
xVariance: 60
pace: 60
}
Affector {
system: sys
property real coefficient: 0.1
property real speed: 1.5
width: parent.width
height: parent.height - 100
onAffectParticles: {
/* //Linear movement
if (particle.r == 0) {
particle.r = Math.random() > 0.5 ? -1 : 1;
}else if (particle.r == 1) {
particle.rotation += speed * dt;
if(particle.rotation >= maxAngle)
particle.r = -1;
}else if (particle.r == -1) {
particle.rotation -= speed * dt;
if(particle.rotation <= -1 * maxAngle)
particle.r = 1;
}
*/
//Wobbly movement
for (var i=0; i<particles.length; i++) {
var particle = particles[i];
if (particle.r == 0.0) {
particle.r = Math.random() + 0.01;
}
particle.rotation += speed * particle.r * dt;
particle.r -= particle.rotation * coefficient;
if (particle.r == 0.0)
particle.r -= particle.rotation * 0.000001;
particle.update = 1;
}
}
}
Affector {//Custom Friction, adds some 'randomness'
system: sys
//onceOff: true
x: -60
width: parent.width + 120
height: 100
anchors.bottom: parent.bottom
onAffectParticles: {
for (var i=0; i<particles.length; i++) {
var particle = particles[i];
var pseudoRand = (Math.floor(particle.t*1327) % 10) + 1;
var yslow = dt * pseudoRand * 0.5 + 1;
var xslow = dt * pseudoRand * 0.05 + 1;
if (particle.vy < 1)
particle.vy = 0;
else
particle.vy = (particle.vy / yslow);
if (particle.vx < 1)
particle.vx = 0;
else
particle.vx = (particle.vx / xslow);
particle.update = true;
}
}
}
ImageParticle {
anchors.fill: parent
id: particles
system: sys
sprites: [Sprite {
source: "../images/realLeaf1.png"
frames: 1
frameDuration: 1
to: {"a":1, "b":1, "c":1, "d":1}
}, Sprite {
name: "a"
source: "../images/realLeaf1.png"
frames: 1
frameDuration: 10000
},
Sprite {
name: "b"
source: "../images/realLeaf2.png"
frames: 1
frameDuration: 10000
},
Sprite {
name: "c"
source: "../images/realLeaf3.png"
frames: 1
frameDuration: 10000
},
Sprite {
name: "d"
source: "../images/realLeaf4.png"
frames: 1
frameDuration: 10000
}
]
width: 100
height: 100
x: 20
y: 20
z:4
}
}
|
