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7    <title>Graphix Library (gfx) Sample Demos</title>
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10    <h1>ParticleCtrlEmissionDemo</h1>
11      <div class="section"><img src="images/ParticleCtrlEmissionDemo.png" border="0" width="400" height="240" /></div>
12      <h2>Overview</h2>
13      <p>This demo controls the emission volume of particles. This demo uses the demo library, <a href="../../../nw/demo/ParticleEffect/Overview.html">demo::ParticleEffect</a> class, and <a href="../../../nw/demo/ParticleNode/Overview.html">demo::ParticleNode</a> class.<br />
14      </p>
15  <h2>How to Use</h2>
16      <p>
17        <ul>
18          <li>Demo-specific operations</li>
19          <ul>
20            <li>R Button: Increases the emission volume.</li>
21            <li>L Button: Decreases the emission volume.</li>
22          </ul>
23          <li>Common Operations</li>
24          <ul>
25            <li>Slide pad: Rotate the camera</li>
26            <li>Slide pad + A Button: Move the camera back and forth</li>
27            <li>Slide pad + B Button: Move the camera in parallel</li>
28            <li>Slide pad + Y Button: Move the camera up and down</li>
29            <li>X Button: Reset the camera position</li>
30            <li>START Button: Restart the demo.</li>
31          </ul>
32        </ul>
33      </p>
34      <h2>Description</h2>
35      <p>Particle emission volume can be dynamically controlled using the <span>nw::gfx::ResParticleEmitterParameter::SetEmissionRatio</span> method in the <span>nw::gfx::ResParticleEmitterParameter</span> class.<br />
36      </p>
37      <pre>
38{
39    nw::gfx::ResParticleEmitterParameter resEmitterParameter = particleEmitter-&gt;GetResParticleEmitterParameterCopy();
40    resEmitterParameter.SetEmissionRatio(1.f);
41}</pre>
42      <p>Within demo code, emission volume is controlled using the SetEmissionRatio() method in the ParticleNode class.</p>
43  <hr><p>CONFIDENTIAL</p></body>
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