you could do as follow:
//retrieve the pattern art fot a given AIColor (PatternColor).
AIArtHandle patternArt;
AIPatternStyle patternStyle;
patternStyle = color.c.p
result = sAIPattern->GetPatternArt(patternStyle.pattern, &patternArt);
aisdk::check_ai_error(result);
then, do a recursive treewalk for this patternArt!
this is done! 