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<DIV><FONT face=Arial size=2><SPAN class=780005816-14112006>hi,
guys.</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=780005816-14112006></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN class=780005816-14112006>When I try to draw a
circle, I used vtkDiskSource, by setting the inner redius and out radius,
i can get a circle. but the bad thing is: the circle is 3 dimensional, if
I do the flip operation (view the circle from the other side), I only can see a
black circle, since the normal problem.</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN class=780005816-14112006>then I tried the
vtkregularPolygonSource to draw, I got a disk with the same normal problem
addressed above.</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=780005816-14112006></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN class=780005816-14112006>does anyone have a
better solution?</SPAN></FONT></DIV>
<DIV> </DIV>
<DIV align=left><FONT face=Arial color=#008080
size=2><STRONG>kevin</STRONG></FONT></DIV>
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