BluEagle

<canvas id="sakura"></canvas>
<div class="btnbg">
<button type="button" onclick="toggleAnimation(this)">Stop</button>
</div>

<!-- sakura shader -->
<script id="sakura_point_vsh" type="x-shader/x_vertex">
uniform mat4 uProjection;
uniform mat4 uModelview;
uniform vec3 uResolution;

BluEagle

<canvas id = "c" > </canvas>
<p>
  Tear the cloth with your mouse.<br><br>
  Right click and drag to cut the cloth.<br><br>
  Reduce physics_accuracy if it's laggy, increase it for a better effect.
</p>