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Well, move up these dots a bit, of course not that nice…
Well, I’ll try the other way then, if that method doesn’t work.
It’s a nightmare… Let’s try to change some settings. One more time…
Well, this circle is much nicer!
Actually it is written in Help, not badly. If someone is interested, may read it.
Essence is that Alias is working with curves in which every point has equal weight.
But with increasing the weight of a point, we can achieve more Spline’s gravity towards it.
So if anybody is interested in details, in Help there is an explicit Spline’s theory, more or less.
we are trying to move forward… Pull down, these dots like this, and move apart these points.
this time it is nicer. So slowly, give it shape.
It is seen that on their blueprint there isn’t an absolute circle, but a cut arch.
Actually it is not so important that it is ideally round. They all, if look closer, have a not so round shape.
Still it looks a bit strange, but it is important to be symmetrical more or less. Well, now let’s try to rebuild it.
Degree 7, span 1. We need a curve without spans. A monstrous result again.
Well, this is it, have to tweak it manually. Most of the times rebuilding goes well, this time it didn’t want.
Quite an unpredictable process... We need to achieve a good look for our curve.
CV distribution should be, somehow, approximately rational. Well, now we are closer.
You have to torture yourself just once, then just copy – paste to back arch. Nothing to worry here...
You just have to go through a bit. Well, let’s leave it this way. It looks normal now. On the back part it fits better.
Looks like blueprint wasn’t digitized well enough. On the side view it isn’t flat. Now move to back.
Well, this one lies perfectly. Well, accordingly now the most interesting… Take… Don't forget to save! :)
Now project, but project not like a curve to surface, but like a curve and check – match original.
It means that Alias will try to project the original curve, without changing its degree. It shows the maximum deviation, 1%
It is more than enough, so we are happy with it. Same here, Surface Edit – Project. Again 1%. More than enough.
Well, now we have such wonderful curves on these surfaces. We can work with them later.
It is seen that CV distribution is quite good, they don’t have spans, and they have good curvature.
So this is what is related to wheel arches. Accordingly we can do absolutely same procedure inside, Just scale down.
Actually we can make an offset, but… there is no crucial difference. Anyway everything is done with approximation.
And we are not preparing it for production. Well, this way… And copy it here.
Now we see what we achieved. And now all the same… Select – Project…
Besides, these curves have history, If you will have to change the original surface,
move some control points, make a different shape, than, curves will adjust automatically.
Well, this is wonderful. Now just hide them to a separate layer. These flat curves too…
To avoid overlapping, otherwise it will be difficult to work. Well, this is what we have…
Well, now for the sake of curiosity let’s connect these surfaces. You can see now that we have these beautiful arches.
In fact, a car is done in order. Beginning from side part, arches, some key moments, overall shape, roof…
It is all checked then for conventions like intersection with construction… But it is for serious approach.
In our case we will do big surfaces, than smaller and smaller. From whole to parts. The rest will follow next time.