Skip to main content
G
gkrishna1-Visitor
1-Visitor
September 15, 2013
Question

How do you control the control points in boundary blend?

  • September 15, 2013
  • 3 replies
  • 4554 views

Is there anyway that user can decide that "at this point, control point should appear" (i mean internal ones, not the external 4 point that are on extreme ends and are paired)

Or what are the factor that decides internal control points?

    3 replies

    T
    TomD.inPDX17-Peridot
    17-Peridot
    September 15, 2013

    If I understand the question right, you could use multiple connected curves to provide more "ends".

    I have a hard time with complex boundary blends but I have had luck connecting multiple sections that have more than 1 curve in them. Maybe this is what will give you the extra control point you are looking for.

    There are also other methods such as sweeps-blends, and even some legacy features that do something similar including adding influence curves.

    G
    gkrishna1-VisitorAuthor
    1-Visitor
    September 18, 2013

    Here it is with natural it gets skewed and with arclength it gets all arranged,but don't know how to pair control points i mean is it just arbitrary,like opposite opposite.

    (also is everyone getting moderated again?)

    T
    TomD.inPDX17-Peridot
    17-Peridot
    September 19, 2013

    This one simply begs for a variable section sweep...

    frame_VSS.PNG

    I don't know why the boundary blend is failing. It almost acts as if something is crossed.

    Anyway, this is a sweep with one contour as the origin and the second as a "guide" (chain1).

    frame_VSS_2.PNG

      P
      ptc-50080821-Visitor
      1-Visitor
      September 16, 2013

      You can also add datum points onto the control curve and then join internal points to datum points.

        D
        dgschaefer21-Topaz II
        21-Topaz II
        September 19, 2013

        You can explicitly tie pairs of points together in the control points dialog. The UI isn't very friendly, but it is possible.

        Open the control points dialog and then click in the top row of the lower right pane. The points of your first curve will highlight in green (in Creo2).

        Capture.JPG

        Choose a point on that curve and then the points on the second curve will highlight and you can choose the corresponding point. You go through picking pairs until you've paired all you want to. You don't need to pair them all, but I found that doing all 6 in the one curve to 6 of the 8 in the other produced good results.

          Terms & ConditionsCookie settingsAccessibility statement