Fix ColladaLoader loading <transparent> tag when <transparency> does not exist #68
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When loading
<transparent>
tag in our current implementation, we use a transparency value of 0.0 if<transparency>
does not tag exist. But according to collada 1.5 spec chapter 7-6, page 250:This causes some meshes to be transparent, see gazebosim/gz-rendering#89. This PR fixes the default value used in calculation.
Signed-off-by: Ian Chen [email protected]