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I started playing with the SuperTorus in shapes.inc today and noticed a couple
problems.
First, and easiset to fix (I was able to do it myself) is that the Accuracy
parameter is not used. Instead, the accuracy is set to 0.01.
Second, if I use a major or minor control of more than 0.5 (exactly) strange
things start happening. If MinorControl is greater than 0.5, the ST becomes a
solid disc-like thing. If MajorControl is greator than 0.5, a "plate" covers
3/4 of the object, covering exactly 3 of the four quadrants (I'm not sure which
one is not covered - I'll post test renders to p.b-t.b shortly) I thought
perhaps it was the contained_by statement, but I enlarged it and it only moves
the plate.
Finally, I would add a default max_gradient of 1 when max_gradient is less than
1 and evaluate is used. That seems to help with holes most of the time.
Ok, that was more than a couple. Sorry :-)
Again, I'll post sample renders (and code) to p.b-t.b shortly.
Michael
--
#macro M(D)#local J=strlen(D);#local _=""#while(J>0)#local _=concat(_,substr(D
,J,1))#local J=J-1;#end _#end sphere{z*9,5pigment{rgb x}}#macro N(D,J)text{ttf
"timrom.ttf"M(D)1,0 translate-J}#end#macro O(E,K)#local _=N(E,K)light_source{-
z*9rgb 1projected_through{_}}#end O("leahciM"<1.6,-.3.9>)O("nosnhoJ"<1.6.9.9>)
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Redbeard (MDJohnson) wrote:
> Second, if I use a major or minor control of more than 0.5 (exactly) strange
> things start happening. If MinorControl is greater than 0.5, the ST becomes a
> solid disc-like thing. If MajorControl is greator than 0.5, a "plate" covers
> 3/4 of the object, covering exactly 3 of the four quadrants (I'm not sure which
> one is not covered - I'll post test renders to p.b-t.b shortly) I thought
> perhaps it was the contained_by statement, but I enlarged it and it only moves
> the plate.
This can be fixed by changing the function to:
function { ( abs((abs(x)^RP + abs(z)^RP)^(1/RP) - RMj)^CP + abs(y)^CP
)^(1/CP) - RMn }
Note all the extra "abs()"s. This changes the shape in some cases
(control of 2/3 I think), but I think the new shape is probably more
desireable anyway.
-josh
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com> wrote in message
news:3BC### [at] smileyface