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Modeling problems

Gusf1Gusf1 Posts: 257
edited December 1969 in Carrara Discussion

I keep having problems with modeling, most likely due to my extreme lack of experience. I have watched many tutorials on anything and everything. The major problem I have is illustrated by this example. In the vertex modeler, I had a goblet shape that I had lathed. I had symmetry on and was trying to extrude a polygon on both sides to create a handle. They extruded fine a couple of times but, I could NOT get them to curve downward to the base. Soon, I was pulling one way and they were going in a completely different direction! In this case, it was around 90 degrees. I was pulling in the " X " direction and the polygon was going in the " Y ". There is probably a very simple solution for this that I am overlooking. Similar things happen in the spline modeler as well.
Gus

Comments

  • TangoAlphaTangoAlpha Posts: 4,584
    edited December 1969

    What I would do (which may not be the best solution) is make a separate handle. Draw its shape with a curved polyline, then use "Path Sweep" to sweep a circle, oval or whatever profile you want along that line. Voila! one handle. UV map then duplicate it for the other side. (always UV map an object before you duplicate it, then the duplicates will already be mapped!)

    It does take a little bit of practice to get the polylines to curve how you want, but once you've mastered this technique you'll find 1001 uses, from ropes to pipework, hanging cables, handbag handles, cup handles, you name it!

  • Gusf1Gusf1 Posts: 257
    edited December 1969

    Thanks for the reply Tim_A. That was actually just an example of the problem I was having. My polylines also have their problems in getting them to go where I want. As I said it's probably some minor little thing I'm not doing or doing wrong in selecting or something.
    Gus

  • TangoAlphaTangoAlpha Posts: 4,584
    edited July 2014

    Tell me about it! The hours I spent just trying to get a nice neat 90 degree turn exactly where I wanted it, and with the right radius...

    Post edited by TangoAlpha on
  • DiomedeDiomede Posts: 15,165
    edited December 1969

    When drawing the polylines, are you using the directional cameras (front, left,...) or the director's camera? I have more success when using the directional cameras.

  • Gusf1Gusf1 Posts: 257
    edited December 1969

    I know I used the directional camera at least once for polylines. That was in the vertex modeler for the goblet. For the rest, I'll have to try it again and see how it goes, maybe tomorrow. I'll post back with more info later. Thank you both for the help!
    Gus

  • Design AcrobatDesign Acrobat Posts: 459
    edited December 1969

    Gusf1 said:
    I keep having problems with modeling, most likely due to my extreme lack of experience. I have watched many tutorials on anything and everything. The major problem I have is illustrated by this example. In the vertex modeler, I had a goblet shape that I had lathed. I had symmetry on and was trying to extrude a polygon on both sides to create a handle. They extruded fine a couple of times but, I could NOT get them to curve downward to the base. Soon, I was pulling one way and they were going in a completely different direction! In this case, it was around 90 degrees. I was pulling in the " X " direction and the polygon was going in the " Y ". There is probably a very simple solution for this that I am overlooking. Similar things happen in the spline modeler as well.
    Gus


    This happens with extrude when the object is symmetrical or almost symmetrical. The extrusion will aim back towards the center of the object on occasion.

    Hold the CTRL key down to send it out straight from the polygon. If you want a smaller starting point, hold down SHIFT and then extrude in the Y axis or whatever axis is perpendicular and it will leave a flattened inset inside your polygon. One can also enter a manual offset in the right hand dialog box.

    But as others have written, I would make the handles separately and then attach them. For one, it's easier to make them a shading domain and thus easier to place as a separate island on a UV map, making texturing or displacement mapping easier.

  • Gusf1Gusf1 Posts: 257
    edited December 1969

    OK, I see one of my misconceptions. The dynamic extrude tool only works in 2 dimensions, not 3. I'm not sure how it decides which 2 dimensions yet. I also think I know why the extrusions will sometimes explode. In trying to get it to go in a direction it can't, the face has twisted and turned sometimes your extruding backwards. And sometimes your extruding at such a steep angle that it almost turns inside out.
    Gus

  • 3DAGE3DAGE Posts: 3,311
    edited December 1969

    HI Gusf1

    When you select the extrude tool,. ..you shoud see some options for the different types of extrusion, in the right hand panels.
    see pic.

    hope it helps

    extrude_options.jpg
    373 x 404 - 100K
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