Struct field casing

IDNAMING-11
TitleNames of struct fields shall be lowerCamelCased.
PriorityMandatory
DescriptionNames of struct fields shall be lowerCamelCased.
RationaleReadability

Avoid:

circleData.Coordinates
circleData.radius_std

Instead use:

circleData.coordinates
circleData.radiusStd