Fixed the selection of the visual in transform control

[ahcorde]

I have the same issue described in this PR gazebosim/gz-rendering#221

Signed-off-by: ahcorde [email protected]

[codecov]

Codecov Report

Merging #597 (8c6de73) into ign-gazebo4 (59ea1c6) will increase coverage by 0.05%.
The diff coverage is n/a.

@@               Coverage Diff               @@
##           ign-gazebo4     #597      +/-   ##
===============================================
+ Coverage        77.24%   77.29%   +0.05%     
===============================================
  Files              213      213              
  Lines            11925    11925              
===============================================
+ Hits              9212     9218       +6     
+ Misses            2713     2707       -6     

Impacted Files	Coverage Δ
src/SimulationRunner.cc	92.92% <0.00%> (+1.11%)	⬆️

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[nkoenig]

I think this breaks selecting a transform control arrow when an object is in front of the arrow.

[iche033]

I think it could be a transparency change that's been done in Dome (could be in ign-rendering)

Edit

nevermind, different issue. I thought this was fixing the transform tool 's transparency problem

[ahcorde]

closing this PR the issue can be fixed in ign-rendering gazebosim/gz-rendering#221