 | | | Re: Soccer Balls - revisited | Re: Soccer Balls - revisited 2004-02-18 - By whkguamusa
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Hi,
On the first question, the normals all have to be facing the same
way. Amapi sets the direction inward on the corner chamfers but the
original object has them facing outward on the hexagon facets (bug).
With a closed volume (like a sphere) you would want them facing out
from the center in most cases. When doing an extrude/ sweep the
normals effect the direction they move when you start your
extrude/sweep. If you are working on more than one facet and the
normals are not uniform some of the faces will move in and others
will move outward. Unified normals effect other tools too and are
important to the look of the surface when setting up textures and
rendering.
If some of them face the wrong way they will render darker (or not at
all in some programs) and you will see the edges of the mismatched
facets.
The second question is a matter of a little practice. All of the
points set are outward from the center of the object. When you set
the first point bring it up off the surface a good deal. Then set a
second point just a little higher than the first but more to the
center of the hexagon & pentagon patches. It should look like a small
bevel around each extruded face. All the rest of the points can be at
the same height as the second (spacebar twice to lock the height of
the next points), just bring them inward to the center of the
extruded facets (to give the deformer something to work with).
The reason for the distance between the first and second point is the
Spherizer deformer moves the lower points outward closer to the
higher points to form the spherical shape. If you set the deformer to
100% it will be a sphere, all the points will lie on the surface with
no details. The setting of 95 leaves that last 5% for the grooves. If
your first point in the extrude is not far enough away from the
original starting point you will loose the seams. Try lowering the
effect of the deformer down to 75 or so and you will see that the
grooves are well defined but the ball is faceted and does not look
round. Make sure your undo level is set high enough so you can go
back and redo the extrude after running the Spherizer and not getting
what you want. This is much easier to do in Amapi 7, you can work in
shaded mode and all the normals can be unified with just one click.
If you like working in Amapi, 7 is worth a good hard.
The wings ball looks real good.
mdc
--- In Carrara@(protected), "ccoles_avengers" <ccoles_shado@(protected)>
wrote:
> Hi MDC,
>
> Thanks for the info on the soccer ball and the AVI instruction
file.
>
> Two questions:
>
> 1) What is the "orient normals" feature supposed to do in this
> example? I am still learning AMAPI and am not familiar with all of
> the features and couldn't quite figure out what was being achieved
on
> the AVI file with this feature. I was able to use this tool on my
> pentagons, but didn't see a noticeable difference on the screen.
>
> 2) I am having a little problem with extruding. It seems as
though I
> have extruded the polygons correctly because I see a gaps where the
> seams are supposed to be (which seems to match your AVI file).
> However, when I try to spherize the model, the gaps/seams disappear,
> leaving only slight impressions where the seams should be.
>
> Did you first extrude outward or inward before resizing inwards to
> complete the faces?
>
> Cheers.
>
> Claudia
> "Selocic"
> (a newbie)
>
> --- In Carrara@(protected), "whkguamusa" <guamauto@(protected)> wrote:
> > Hi list,
> >
> > Here is a pretty quick rundown on making a soccer ball in Amapi 6
or
> > 7:
> > http://ice.prohosting.com/~docgac/s_ball/soccerball.htm
> > I didn't think the level of burning interest in making a ball was
> > high enough to justify 10 to 15 pages of screen caps and captions
> > showing how to do it.
> > What I did may not be as detailed, but was faster to do and
turned
> > out more entertaining - at least to me(I am easily amused).
> > Let me know what you think i.e. bad link - bad edits - over
acting,
> > etc...
> > (If the server shuts down my downloads for going over the limit
I'll
> > have a good idea.)
> >
> >
> > mdc
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