I am trying to create an intersection that spins around the vertical 
axis, like this:

https://i.stack.imgur.com/xT5W9.jpg

except extruded along the y axis.

How would I go about creating this? I tried making an intersection of 
planes, but it only works between 0 and 180 degrees. Any more than that 
and it behaves strangely.

#declare plane_wedge = intersection
{
	plane {-x, 0}
	plane {+x, 0	rotate y * 270}
	pigment {color srgb <1,2/4,0>}
}

Thanks.


Mike

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