I have already shown a pattern that consists of both clockwise and anticlockwise svAstika patterns at http://www.ikolam.com/node/26840 . I am presently showing here a pattern that has only one form, viz., the clockwise form that is used in many Hindu rituals. Note that svAstika patterns are universal and very ancient, found in all cultures. It is a pity that these beautiful patterns has negative connotations in the present day Western culture. Enjoy!
Regards! - mOhana