help , modelling problem.

[H. Ikeda]

Hi,

By using HyperNURBS' point weights on corners, you'd get a sharp shape like:

bin.zip (http://www.interq.or.jp/aquarius/ikeda3dr/data/cgtalk/bin.zip)

Just select a point and move mouse with the period key (.) being pressed.

hope this helps.

[Zoogie]

Thanks Hiroshi,
I really appreciate it.
I had tried point weighting as well, but I was getting all these artifacts (the corner would stay round, but it would become sharp like a knife ie the weighting seems to be occuring between the 2 point of each corner rather than between the 4 corners of the bin.)

I tried it again after getting your file, and I am still getting rounding in the corners after I have weighted to 100%.

Which points are you selecting? I selected the 8 points (2 in each corner).
Thanks again.
here is a pic

thanks

[Zoogie]

Here are my point selections

[LucentDreams]

if HN weighting didn't work (although it should) then simply add some cuts right by the corners.

[JIII]

to keep the angles good I usually subdivide by 1 without the hypernurbs box checked.

then after I drop it in the hyperburbs object its perfect.

[JIII]

just played around with this add some cuts. it should work just fine.

don't weight the points weight the edges as well.

the points don't give you enough control.

[H. Ikeda]

Well, I agree in that weighting is the last choice, for final touch.
(so why I said weighting? only because I had little time:) It's not perfect, but fast.)

As Kaiskai and JIII said, knife cuts may be safe for further modeling stages. And the subdivision near the corners should be done before making the hole.

Anyway, for the linked file, weighting has been done for each inner point of each corner. Not two.
(But try the subdivision first...)

Cheers,;)

[Zoogie]

Thanks guys for the help. I have to say, I think weighting in Cinema 4D is not really quite there yet.
I believe achieving this should have been a simple weighting of the selected points.

1. I didnt want the extra geometry from subdividing. This would really make it hard to edit the surface later and defeat the advantage of subDivision surfaces. Granted it was easier to weight those points after the subdivion function.

I finally got it to work by doing the edge weighting in addition to the point weighting. And it still wasnt near as effective as the lightwave version ( just my opinion).
I also did the knifing thing (Actually to be more precise, I used a series of edge rings followed by edge cuts) . I would still have had to follow it with weighting.
And what if I then wanted to edit my shape. I will attach images to show what I am saying.

I went into lightwave to do a quick check ( used to be my primary 3d app :) ) It is so simpe to do there , just select the same points I had shown above and weight. Nice clean(er) edges. I still dont know how Hisroshi did it with only point weighting, because for me it just wouldnt work without edge weighting as well.

Here is the sub-divided jpg.

[Zoogie]

here is the lightwave point weighting via the points selected. One disadvantage in Lightwave, is that the weighting (at least in the version 7 ) is not interactive as in cinema4D.

[Zoogie]

Sorry pressed the wrong button here is the lightwave jpg

[Zoogie]

and finally here is the knifed ( edge/edge cut) version in cinema. Still needs to be weighted.

Thanks folks for taking the time to help me out.

[Zoogie]

sorry, 1 more.
here is the lightwave cage (just to show it is the exact same as the cinema one)

[H. Ikeda]

Ok, the problem is not so simple.
Strictly speaking, in my weighting, two points are weighted for upper two corners, and one outer point is weighted for lower corners.
The procedure is, select the cage and point(s), and right-button drag with the key (.) pressed.

[Zoogie]

Oh! nice Hiroshi,thanks. I just learned something new. Now I see why it worked for some of you and not for me.
I have been weighting using the left mouse. But the right mouse weighting is different.
Thanks . That is definitely what I expected to see.
I had actually forgotten about using the modifier keys as well . (Even though I had read about that duing the early bird time) I think right mouse would be equivalent to holding either control clicking or shift clicking.
Anyway, I am going to play with this a lot more so I get used to it.

Thanks again. Ikeda San,, Skai and JIII. for the help.

[CGTalk Moderation]

This thread has been automatically closed as it remained inactive for 12 months. If you wish to continue the discussion, please create a new thread in the appropriate forum.