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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [Mac] Gesture Events should not have negative scale"
href="https://bugs.webkit.org/show_bug.cgi?id=151065">151065</a>
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<th>Summary</th>
<td>[Mac] Gesture Events should not have negative scale
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<th>Classification</th>
<td>Unclassified
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<th>Product</th>
<td>WebKit
</td>
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<th>Version</th>
<td>Other
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<th>Hardware</th>
<td>Unspecified
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<th>OS</th>
<td>Unspecified
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<th>Status</th>
<td>NEW
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<th>Severity</th>
<td>Normal
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<th>Priority</th>
<td>P2
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<th>Component</th>
<td>WebKit Misc.
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<th>Assignee</th>
<td>webkit-unassigned@lists.webkit.org
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<th>Reporter</th>
<td>joepeck@webkit.org
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<th>CC</th>
<td>thorton@apple.com, webkit-bug-importer@group.apple.com
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<pre>Created <span class=""><a href="attachment.cgi?id=265120" name="attach_265120" title="[TEST] Gesture Test">attachment 265120</a> <a href="attachment.cgi?id=265120&action=edit" title="[TEST] Gesture Test">[details]</a></span>
[TEST] Gesture Test
* SUMMARY
[Mac] Gesture Events should not have negative scale.
* STEPS TO REPRODUCE
1. Load test page
2. Pinch on the box
=> scale goes negative the box starts re-growing (due to CSS transform scale()). Did not expect the scale to ever go negative.
* NOTES
- Loading the same test case on iOS, the scale does not go negative. It approaches zero but rarely goes below 0.15. It never goes negative.
- Since scale is local to 1 (>1 = fingers moved apart, <1 = fingers moved closer together) it is natural to use a a multiplier of the start value. When values get very close to zero, or go negative, the usefulness diminish and it means a rapid change from the original value.</pre>
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