Surface Analysis: Slope vs Draft

Discussion in 'Pro/Engineer & Creo Elements/Pro' started by Gra-gra, May 10, 2004.

  1. Gra-gra

    Gra-gra Guest

    Aren't these essentially the same, IOW, don't they tell us the same thing?

    I'm trying to smarten up my surface of last week (the tangency problem one).
     
    Gra-gra, May 10, 2004
    #1
  2. Gra-gra

    David Janes Guest

    : Aren't these essentially the same, IOW, don't they tell us the same thing?

    If you were examining a drafted surface and checked against the same 'hinge'
    surface, they probably would give the same result. Slope is just capable of
    telling you a lot more than the draft check function which only says is this
    surface more or less than this angle.
    :
    : I'm trying to smarten up my surface of last week (the tangency problem one).

    Slope is good for seeing discontinuity. So is Gaussian curvature (similar to
    slope, but not measured against plane), porcupine is excellent and so are
    highlight curves (zebra stripes) for seeing discontinuity between surface patches.

    David Janes
     
    David Janes, May 11, 2004
    #2
  3. Gra-gra

    Gra-gra Guest

    I worked out that Slope also doesn't distinguish between whether the
    surface is sloping backwards or forwards. IOW 2 surfs with a 1 deg
    draft will be colored the same even if one is one the other half of
    the mold.
    I find it very hard to make a surface that doesn't go crazy in
    porcupine.

    What I sometimes do is pattern a bunch of intersection curves which
    gives me a relief map of the surface. Also it's always there. If I
    save a surface analysis it's hard to see the curves underneath to
    modify them.
     
    Gra-gra, May 11, 2004
    #3
Ask a Question

Want to reply to this thread or ask your own question?

You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.