[mapguide-trac] #508: Remove string members in render styles

[MapGuide Open Source]

#508: Remove string members in render styles
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   Reporter:  waltweltonlair  |       Owner:  waltweltonlair
       Type:  task            |      Status:  new           
   Priority:  medium          |   Milestone:  2.1           
  Component:  General         |     Version:  2.0.0         
   Severity:  minor           |    Keywords:                
External_id:                  |  
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 The SE_RenderStyle derived structs contain a number of string members
 (e.g. angleControl, vertexControl), and the rendering code uses string
 comparison calls to branch based on their values.  This all happens inside
 the rendering loop.  A more efficient implementation is to use enumerated
 types in place of these string members.  In the common case (no
 expressions) the strings are then evaluated only once when the style is
 evaluated.

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Ticket URL: <https://trac.osgeo.org/mapguide/ticket/508>
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