>Called for each fixture found in the query. You control how the ray cast proceeds by returning a float: return -1: ignore this fixture and continue return 0: terminate the ray cast return fraction: clip the ray to this point return 1: don't clip the ray and continue </p>
<dl><dt><b>Parameters:</b></dt><dd>
  <table class="params">
    <tr><td class="paramname">fixture</td><td>the fixture hit by the ray </td></tr>
    <tr><td class="paramname">point</td><td>the point of initial intersection </td></tr>
    <