<p>This is awesome, great work <a class="user-mention" data-hovercard-type="user" data-hovercard-url="/hovercards?user_id=5842757" data-octo-click="hovercard-link-click" data-octo-dimensions="link_type:self" href="https://github.com/mmd-osm">@mmd-osm</a>! I checked out your branch, <a href="https://github.com/gravitystorm/openstreetmap-website/commit/ab6d657992f89d4578ef02047cd6b43ef4d1dac7">made a couple of stylistic changes</a> and everything works for me. I can't spot any differences between the animations with your code versus the gpx-importer code, which is great.</p>
<p>However, it looks like there's a problem with the gd2 part of the code, since it fails with a single-point GPX file. We use these in the tests, and running the tests gives an error:</p>
<div class="highlight highlight-source-shell"><pre>$ bundle <span class="pl-c1">exec</span> ruby -Itest test/models/trace_test.rb 
[Coveralls] Set up the SimpleCov formatter.
[Coveralls] Using SimpleCov<span class="pl-s"><span class="pl-pds">'</span>s <span class="pl-pds">'</span></span>rails<span class="pl-s"><span class="pl-pds">'</span> settings.</span>
<span class="pl-s">Run options: --seed 30363</span>
<span class="pl-s"></span>
<span class="pl-s"># Running:</span>
<span class="pl-s"></span>
<span class="pl-s">.........GD Warning: one parameter to a memory allocation multiplication is negative or zero, failing operation gracefully</span>
<span class="pl-s">double free or corruption (top)</span>
<span class="pl-s">Aborted (core dumped)</span></pre></div>
<p>You can see the same thing if you try uploading <code>test/gpx/fixtures/a.gpx</code> via the web front end, the webserver dies with the same warning. Could you look into this?</p>

<p style="font-size:small;-webkit-text-size-adjust:none;color:#666;">—<br />You are receiving this because you are subscribed to this thread.<br />Reply to this email directly, <a href="https://github.com/openstreetmap/openstreetmap-website/issues/2132#issuecomment-479405313">view it on GitHub</a>, or <a href="https://github.com/notifications/unsubscribe-auth/ABWnLcJ4jDEr5fnC6CPJuatcEU5JxaeNks5vdG9EgaJpZM4ak6Cd">mute the thread</a>.<img src="https://github.com/notifications/beacon/ABWnLT-dV9qfBaRQ6xQ5gr7gSKLEfaK-ks5vdG9EgaJpZM4ak6Cd.gif" height="1" width="1" alt="" /></p>
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