On 7/21/2018 2:36 AM, posfan12 wrote:
> "And" <49341109@ntnu.edu.tw> wrote:
>> Hi,
>> I have a method using isosurface render spheroid shell below.
>>
>> use this two function
>>
>> #declare f_spheroid=function(var1,var2,var3, a,b){
>> var1*var1/a/a+var2*var2/a/a+var3*var3/b/b-1
>> }
>>
>> #declare f_spheroid_normalized=function(var1,var2,var3, a,b){
>> f_spheroid(var1,var2,var3, a,b)
>> /sqrt(4*(var1*var1+var2*var2)/pow(a,4)+4*var3*var3/pow(b,4))
>> }
>>
>>
>> //than difference these two isosurfaces
>> difference{
>> isosurface{
>> function{f_spheroid(x,y,z,1,3)}
>> }
>> isosurface{
>> function{f_spheroid_normalized(x,y,z,1,3)+thickness}
>> }
>> }
> 
> 
> (This may be a double post. Not sure. Sorry!)
> 
> The above function as the "a" and "b" parameters for the ellipsoid. How do I add
> the "c" parameter for the third axis? I can see where it goes in "f_spheroid",
> but I don't understand "f_spheroid_normalized". Thanks.
> 
> 
> Mike
> 

Never mind. I figured it out.

Mike

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