Which is faster? getCharBoundaries or getLineMetrics

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hi,

i need hold of vertical position , height of text character. possible using textfield.getcharboundaries() method rather slow have looked other possibilities. 1 way hold of line index of character textfield.getlineindexofchar() , iterate on text lines , examine heights using textfield.getlinemetrics().
what ask if can expect increased efficiency using second method compared first.

i of course interested in other ways hold of same information.

ok quick update:

i have done tests our application , result when using getlinemetrics() instead of getcharboundaries() cut in processing time >99%.


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