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Can someone please explain to me the differences of Lathes and Surfaces of
Revolutions? Is it that SoRs can be hollow and Lathes cannot?
Corey
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Corey Woodworth <cdw### [at] mpinet net> wrote:
> Can someone please explain to me the differences of Lathes and Surfaces of
> Revolutions?
In a sor the y-value of each control point has to be larger than the one
of the previous point. Lathes do not have this limitation.
Logically sors render faster than lathes.
> Is it that SoRs can be hollow and Lathes cannot?
You'll have to be more specific about what do you mean by "hollow".
--
#macro N(D)#if(D>99)cylinder{M()#local D=div(D,104);M().5,2pigment{rgb M()}}
N(D)#end#end#macro M()<mod(D,13)-6mod(div(D,13)8)-3,10>#end blob{
N(11117333955)N(4254934330)N(3900569407)N(7382340)N(3358)N(970)}// - Warp -
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Ahh I get it. So a Lathe can fold back in upon it self.
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On Tue, 12 Mar 2002 20:23:41 -0500, "Corey Woodworth"
<cdw### [at] mpinetnet> wrote:
>Ahh I get it. So a Lathe can fold back in upon it self.
Yes. Mathematically, it's a more complex function, and so slower to
render, but offers better control (for example, it can use different
kinds of splines). Use a SOR if it suits your needs and only use
lathes if you need to.
Peter Popov ICQ : 15002700
Personal e-mail : pet### [at] vipbg
TAG e-mail : pet### [at] tagpovrayorg
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