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Sandy's Forum _ AS2 1.x versions _ help with primitive

Posted by: bfi Nov 13 2006, 03:24 PM

I think that the sandy engine is very good for making a very nice animated 3D pie chart. But I'm new to flash 3D, and I cannot figure out how to make a "slice" class, because I don't know the math for it. I tried the cylinder class as an example, but it is not a good start, as the class uses an unsuitable algorithm; for a theta from 0 to like pi+pi/2, I get the result in the attached image. Can you please give me some guidance? Thank you, and keep up the good work!

Attached thumbnail(s)

Posted by: kiroukou Nov 13 2006, 05:42 PM

Hi
Indeed some maths functios are required here.
But the Cylinder algo is a good start, just set enableBackfaceCulling to false, and that should be better

+

Posted by: foomonger Dec 8 2006, 03:09 PM

QUOTE(kiroukou @ Nov 13 2006, 12:42 PM)

Hi
Indeed some maths functios are required here.
But the Cylinder algo is a good start, just set enableBackfaceCulling to false, and that should be better

bfi, you were really close. you just need to add the center points.
attached is a slice class that i just got working. you may want to change the package name.
i still need to test it out more but its basically there.

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Slice.as ( 7.19k ) Number of downloads: 0