PDA

View Full Version : Questions about modeling in symmetry

Mentat7
03-23-2003, 02:46 PM
I have been practicing with C4D and have run into a stumbling block. I can not seem to find any definitive info on how to solve this problem and was hoping someone here could shed some light on it.

The picture below illustrates what I am up against. The main part of the visor on the helmet keeps coming up as two extruded pieces regardles if I have PRESERVE GROUPS checked. No matter what I do there are certain functions that create an edge poly (see the division in the middle of the visor). I have tried several methods to get rid of it. I have attempted to delete the offending polys but what usually happens is a nasty little gap is left. I have tried to bridge the gap, make polys out of the gap, move the points, weld etc. At best I can only achieve a harsh line in the middle where the two eges meet. What I want is a continous, smooth surface across the visor with no line down the middle. What is the best way to do this? I know this is probably par for the course but I am at odds on how to fix it. Thanks for your help.
pit
03-23-2003, 02:55 PM
Try this:
Select all points in question -> under Structure -> Edit Surface-> Set Value ->x=0
Mentat7
03-23-2003, 03:18 PM
Thanks PIT but that didn't seem to work. It just makes the remaining points extrude off into the distance to a vanishing point. The problem there I think is that the inside corners of the perpendicular polys share a common point so I can't adjust it without affecting it's neighbor.

Here is a pic of the wireframe:
Mentat7
03-23-2003, 03:20 PM
And here is a general example of the problem I am trying to avoid or fix. I know there must be a way around this.
pit
03-23-2003, 03:35 PM
YouŽll have to delete the extra polys youŽve got there and then set the points to 0 on X. That will solve the problem.
pit
03-23-2003, 03:44 PM
Marked the polys on your screenshot.
DetoxIllusions
03-23-2003, 03:45 PM
Turn the symmetry off for a moment. look at the model form the side so you are looking into the inside of the model. see the ploygons that are there on the side they must be deleted.

example:
DetoxIllusions
03-23-2003, 03:46 PM
Darn you beat me to it.
Mentat7
03-23-2003, 03:56 PM
Woohoo! Thanks Pit! That did it. So what exactly am I doing when I set X to zero? Am I instructing C4D to place the point exactly at position zero on the X axis?? Here is the fixed model.
randyrives
03-23-2003, 10:17 PM
That is correct Menta. When you extrude in Cinema the extrude is perform along the normals. This may not be perfectly perpendicluar to your object so polys are created on the sides of the extrude.

So deleting the newly created side polys and selecting those points and using the set command puts them back at the x axis.

You might want to do an optimize at this point to clear up any extra points this method creates.
Mentat7
03-23-2003, 11:52 PM
Thanks Randy!
CGTalk Moderation
01-14-2006, 05:00 PM
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.