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Gazlw
06-15-2014, 12:16 PM
Hi,

There is probably a really simple answer to this? But I have a Sub D ball and want to have a circle on this, when I stencil the circle in the poly
object and sub D, the shape obviously goes completely, does anyone have a method for this. I know it seems a bit of a newbie question though I haven't done much Sub D modelling and am just starting to get into it.

Thanks

prometheus
06-15-2014, 12:25 PM
http://www.pixelandpoly.com/video.html

jeric_synergy
06-15-2014, 12:27 PM
Refer to this thread for the above and other resources:

http://forums.newtek.com/showthread.php?142122-Need-Help-with-Spline-modeling

erikals
06-15-2014, 12:51 PM
maybe like this... ?


https://www.youtube.com/watch?v=7blLVOpPnbo

jeric_synergy
06-15-2014, 12:58 PM
Interesting use of SMOOTH. Also good use of HeatShrink.

probiner
06-15-2014, 01:46 PM
References. Notice the size difference in Subdivision, hence the lookup table.

Cheers

http://forums.newtek.com/showthread.php?117211-Catmull-Clark-Edge-Weight-Freeze-Optimization&p=1117514&viewfull=1#post1117514

erikals
06-15-2014, 02:51 PM
that's some darn nice polyflow probiner... thank you...! http://erikalstad.com/backup/misc.php_files/king.gif

jeric, thanks... :]

spherical
06-15-2014, 05:20 PM
Exactly what you're looking for: http://lightwiki.com/wiki/Fundamentals_of_Subpatch_Modeling

Gazlw
06-16-2014, 01:24 PM
Thanks guys for your help! I found the Pixel and Poly tutorials really good. I segmented the poly's and used rounder, then multi shift, this seemed to did a pretty good job.

jeric_synergy
06-16-2014, 03:23 PM
Without HEAT SHRINK, I think it would be pretty hard to get that excellent edge.

jeric_synergy
06-16-2014, 03:33 PM
"Untangle" is a HORRIBLE name for that tool. :devil:

raw-m
06-16-2014, 03:56 PM
Always get a good job done with PX_Navel.

jeric_synergy
06-16-2014, 04:04 PM
Always get a good job done with PX_Navel.

Can't tell if that's still available, through the Nihonglish. :(

++ grabbed it. 64 bit version crashed my LWM. --I'm still thinking getting anything to conform to the curve of the cylinder as Erikals did will be clever.

raw-m
06-16-2014, 04:06 PM
Yes, it's still available, in fact it's worth a revisit as a lot the mac plugins have been updated to 64bit and work a treat! Point taken about the language barrier, there's a bit of guess work involved.

hrgiger
06-16-2014, 04:16 PM
Without HEAT SHRINK, I think it would be pretty hard to get that excellent edge.

Personally I don't care for the heat shrink method as I don't like modifying the whole mesh just to get a hole in the surface. Its much easier to Boolean a hole in a surface and clean up the surrounding polygons to be 4 point polys. The trick is to use a cutter with the same number of sides as the surrounding points you're cutting from. The problem with the heat shrink method is its only usable in a limited number of instances, as in this case a simple tube primitive.

jeric_synergy
06-16-2014, 04:27 PM
;) C'monnnnn, guys, lets see some dueling video going up!

jeric_synergy
06-16-2014, 05:28 PM
Its much easier to Boolean a hole in a surface and clean up the surrounding polygons to be 4 point polys. The trick is to use a cutter with the same number of sides as the surrounding points you're cutting from.
That sounds good, but my attempt at that method was laborious and awful in result.

What series of steps would you take to do this?, because when I Booleaned w/a same number of sides cutter, it was a mess, and I wound up w/a lot more points than I bargained for.

spherical
06-16-2014, 11:42 PM
;) C'monnnnn, guys, lets see some dueling video going up!

Now yer talkin'! :) Let's get ready to RUMBllllllle........

raw-m
06-17-2014, 03:11 AM
Lots of nice hole cutting techniques from Kuzey:
https://vimeo.com/groups/lightwave/videos/96728150

about 13:20 and 16:50

hrgiger
06-17-2014, 07:39 AM
i will make a video later on tonight if i can.

jeric_synergy
06-17-2014, 07:41 AM
i will make a video later on tonight if i can.
Thanks: I literally woke up thinking about this. Ugh!

:thumbsup:

JoePoe
06-17-2014, 08:30 AM
Circlify (https://www.lightwave3d.com/assets/plugins/entry/mf-circlify/)?

(does what Untangle does but also (tries to) adheres to existing mesh curvature and orientation... and you don't have to merge polys first)

hrgiger
06-17-2014, 03:23 PM
I'm encoding a video now and will upload it soon.

hrgiger
06-17-2014, 03:56 PM
Lots of nice hole cutting techniques from Kuzey:
https://vimeo.com/groups/lightwave/videos/96728150

about 13:20 and 16:50

Yeah Kuzey is using untangle which works fairly well on flatter surfaces but goes rather wonky on curved surfaces. MF circlify that Joe Poe linked to will give you a more usable result. I just prefer to use a Boolean as I know its cutting right on the surface where I want the edges to be.


https://www.youtube.com/watch?v=SoeNCSNrvJs&feature=youtu.be

erikals
06-17-2014, 04:03 PM
The problem with the heat shrink method is its only usable in a limited number of instances, as in this case a simple tube primitive...

i think it should apply in all cases, as heatshrink has a "normal" option... ?

on second though, it might be offset a bit, have to test it out further (one of these days...)


a bit faster >


http://youtu.be/ck_bSZrhQds

hrgiger
06-17-2014, 04:09 PM
i think it should apply in all cases, as heatshrink has a "normal" option... ?

on second though, it might be offset a bit, have to test it out further (one of these days...)

Well I'm thinking on more irregular surfaces, such as cutting a hole out of a irregularly shaped car object for the headlight. Might be quite awkward to try and heatshrink that back into exact previous position. I can't imagine how that might work.

erikals
06-17-2014, 04:33 PM
Well I'm thinking on more irregular surfaces, such as cutting a hole out of a irregularly shaped car object for the headlight. Might be quite awkward to try and heatshrink that back into exact previous position. I can't imagine how that might work.

you might be right... i'll have to check it out later on, but that might prove cumbersome...

too tired to try atm... 00:35 AM... Zzzz...

jeric_synergy
06-17-2014, 05:06 PM
HRGiger, thanks for doing that, much obliged:

1) Using OUTLINE POINTS, you can have LWM count the points for you. In bigger selections, counting points rapidly becomes tedious and error-prone;

2) The plugin PERSPICACIOUS QUADS will help with quickly rebuilding the quads necessary, since the user doesn't have to worry about point order. (It works well enough that I replaced MAKE POLY with it.)

What screen/voice recorder do you use? It's time for me to try some of this stuff in public. I'll do this with a recurve surface to see how well in works in a complex situation.

Thanks for the really clear tutorial! It's obviously a popular topic: the YouTube suggestions after the end were rife with the same thing in all the major players, except XSI.

+++
It seems like something clever like BRIDGE should be able to create all those quads FOR the user-- it's by far the most laborious part.

XswampyX
06-17-2014, 05:22 PM
3rdpowers.com -> boolean?


https://www.youtube.com/watch?v=wY_rMvekFOw

hrgiger
06-17-2014, 06:00 PM
Eric, I'm using Camtasia Studio for screen recording and record it as an uncompressed AVI. Then I send it to premiere and render it out in 1080p as an Mp4.

BokadCastle
06-17-2014, 06:31 PM
LW3D - Hole In Curved Sub-D Mesh

https://www.youtube.com/watch?v=v82MWlBrKs4

erikals
06-17-2014, 09:45 PM
3rdpowers.com -> boolean?

https://www.youtube.com/watch?v=wY_rMvekFOw

nice alternative... http://erikalstad.com/backup/misc.php_files/smile.gif