Inserting a Knowledge Pattern into a Power Copy

You can insert a knowledge pattern into a power copy to instantiate it. To view the model on which the following scenario is based, import the Sample_extra.3dxml file located in the win_b64\startup\Knowledgeware\PKT Samples\Samples1 directory.

Note: This 3dxml file illustrates how to instantiate bump user features on a surface following a given pattern. Each bump color and height varies depending on its distance to the surface boundary. The knowledge pattern is inserted into a power copy. You can change design parameters and knowledge patterns can be reexecuted to see the modifications result.

This task shows you how to:

See Also
About the Knowledge Pattern Feature
Other Information

Create the Knowledge Pattern

You can create the knowledge pattern referencing a user feature to instantiate features.

  1. From the Compass, click 3D Modeling Apps and select 3D Templates Capture.
    The Engineering Templates app opens.
  2. From the Manage Templates section, click Knowledge Pattern .
    The Knowledge Pattern Editor opens.
  3. Create a list. To do so, click Add in the Knowledge Pattern Lists field.
    The list is added to the Knowledge Pattern Lists.
  4. Enter the following code in the editor: 
    let i (Integer)
let c (Curve)
let c2 (Curve)
let b (Boolean)
let a (AREA)
let a2 (AREA)

a = area(`Construction objects\Boundary.1`  )

b = False

i = 1

/* i is incremented automatically by 1 if it is not modified explicitly inside loop */
for i while b == False
{
         /* Method used to create basic (isolated) geometry that is then valuated by geometry constructors */
         /* Available types : Point, Line, Curve, Plane, Surface, GeoVolume, Axis System */
         c = CreateOrModifyDatum("Curve", Parallels , Relations\Patterns\GenerateParallels\List.1 , i)

         /* Change the name */

         /* curveparallel is a geometry constructor. Use Language browser to find other ones, based on output type */
         if i == 1
                 c2 = curveparallel(`Construction objects\Boundary.1` ,`Inputs\Subdivision Surface.1` ,
                 DesignParameters\ParallelCurveOffset , True)
         else
                 c2 = curveparallel(Relations\Patterns\GenerateParallels\List.1 [i - 1] ,
                 `Inputs\Subdivision Surface.1` ,DesignParameters\ParallelCurveOffset , True)

          /* curveparallel can fail so we handle error to avoid an infinite loop */
          if c2 == NULL OR c2.Error == True
                   b = True
          else
          {
                   c = c2
                  a2 = 0mm2
                  a2 = area(c)

                  /* stop criterion */
                  if a2 < a/DesignParameters\SurfaceRatioForStopCriterion
                          b = True
          }
}

    Notes:
    • You can use the following keyboard shortcuts in the editor:
      • Ctrl+Z: Undo. Lets you delete the last word you entered.
      • Ctrl+Y: Redo.
      • Ctrl+F: Search in text.
      • Ctrl+A: Select all.

  5. Click OK to validate.
    The knowledge pattern is created.

Create the Power Copy

You can include the knowledge pattern into a power copy.

Notes:
  • If you want to reuse a knowledge pattern in a 3DPart, include it into a power copy.

  • Copied objects can be retrieved using GetAttributeObject. For example, when instantiating a power copy using the InstantiateTemplate function, copied objects can be retrieved using the object returned by InstantiateTemplate. The expected name is the name used when defining the power copy.

  1. From the Compass, click 3D Modeling Apps and select 3D Templates Capture
  2. From the Manage Templates section, click Power Copy .
    The Power Copy Definition dialog box appears.
  3. Select the elements making up the power copy from the tree.

    In our example, select:

    • Construction objects
    • Parallels
    • PointsOnParallels
    • Bumps
    • the resource table
    • the ShowNoShowThings rule
    • the Patterns node
    • the ExecutePatterns parameter
    • the DesignParameters node.

  4. In the Parameters tab, publish the parameters located below the DesignParameters node.
  5. Click OK when done.
    The power copy is instantiated.