TFontCache.GetAngledTextGlyphs

function GetAngledTextGlyphs(x, y: double; const text: UnicodeString; angleRadians: double; const rotatePt: TPointD; out nextPt: TPointD): TPathsD; overload;

Notes:
x and y indicate the initial offset of the text baseline.
The returned glyphs' Y coordinates are relative to the baseline of text.
nextPt is the anticipated starting position for any following text.