make centre and axis optional in cylinder shapes

[Anders Markvardsen]

In:

<cylinder id="A">

<centre-of-bottom-base r="0.0" t="0.0" p="0.0" /> <!-- here position specified using spherical coordinates --> <axis x="0.0" y="0.2" z="0" /> <radius val="1" /> <height val="10.2" />

</cylinder>

make <centre-of-bottom-base and axis optional and let these be (0,0,0) and (0,0,1) respectively

<infinite-cylinder id="A" >

<centre x="0.0" y="0.2" z="0" /> <axis x="0.0" y="0.2" z="0" /> <radius val="1" />

</infinite-cylinder>

make <centre and axis optional and let these be (0,0,0) and (0,0,1) respectively

reminder update wiki + schema

[Nick Draper]

Bulk move to assigned at the introduction of the triage step

[Stuart Campbell]

This ticket has been transferred to github issue ​8818