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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [PATCH] doc: Fix mistake in Matrix example to relect only X along Y axis"
href="https://bugs.freedesktop.org/show_bug.cgi?id=101474">101474</a>
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<th>Summary</th>
<td>[PATCH] doc: Fix mistake in Matrix example to relect only X along Y axis
</td>
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<th>Product</th>
<td>Wayland
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<th>Version</th>
<td>unspecified
</td>
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<th>Hardware</th>
<td>Other
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<th>OS</th>
<td>All
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<th>Status</th>
<td>NEW
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<th>Severity</th>
<td>normal
</td>
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<th>Priority</th>
<td>medium
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<th>Component</th>
<td>libinput
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<th>Assignee</th>
<td>wayland-bugs@lists.freedesktop.org
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<th>Reporter</th>
<td>rzr@users.sf.net
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<p>
<div>
<pre>Subject: [PATCH] doc: Fix mistake in Matrix example to relect only X along Y
axis
On some devices, X coordidate is not working well, as if it was swapped,
(click on right, appear on left and vice versa).
To sort this issue, coordidates should be reflected on Y axis:
- new X prosition is changed (width is substracted by X position)
- Y is unchanged (the mistake was here, it was set to X)
In landscape (or portrait) mode:
[ x ]
[ y ]
[ 1 ]
*
[ -1 0 1 ] [ x' ] = -x + 0*y + 1*width
[ 0 1 0 ] [ y' ] = 0*x + 1*y + 0*height
[ 0 0 1 ] [ 1 ]
This was verified using this touch screen.
E: ID_VENDOR=eGalax_Inc.
E: ID_VENDOR_ENC=eGalax\x20Inc.
E: ID_VENDOR_ID=0eef
Origin:
<a href="https://github.com/TizenTeam/libinput/tree/sandbox/pcoval/on/master/review">https://github.com/TizenTeam/libinput/tree/sandbox/pcoval/on/master/review</a></pre>
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