RE: FLASH: formule needed

[Schweiker, William (Chantilly)]

That's the right equation for the cartesian plane.  There is a way to

do it in spherical coordinates using Cos(X) +Sin(Y) = ????.  I don't

have my Calc book near me and the horror of it has left me blank :-).

This may be worth looking up since Cos and Sin are built in.


HTH


Bill Schweiker


		-----Original Message-----

		From:	Helen Triolo [

designeri-technica [dot] com (mailto:designeri-technica [dot] com)

]


		If memory serves, I think a circle is defined by x**2

+ y**2 = r**2

		(where **2 means squared), so for a given x, y would

be square root(

		r**2 - y**2).  Eg, for x=8 (and r=10), y=

sqrt(100-64)=6 (and there

		would also be points at (8,-6) (-8,6) and (-8,-6) if

you're centering on

		(0,0), as you seem to be).  Now to get the square root

function, I think

		you'll have to go check one of Branden's examples...


		hth,

		Helen

		


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