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(1)Ellipse Parameters - 6 w= 2/3, w= 1/2, w= 1/3 We know the center M = (xm, ym) and the values ofa and b

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(1)

Ellipse Parameters

- 6

w= 2/3, w= 1/2, w= 1/3

We know the center M = (xm, ym) and the values ofa and b. We want to calculate the curve pointsP0,P1 and P2 and the weight w to draw the ellipse. Withr =√

a2+b2 we get:

P0=

xm−a2 r ym+ b2

r

!

P1= xm ym+r

!

P2 =

xm+a2 r ym+b2 r

!

w0 = 1 w1 =±b

r (1)

With these weights we can draw the ellipse with two segments. One segment uses the positive and the other the negative weight w1.

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