Creating Laws

Law lets you create evolution laws within a representation.


Before you begin: Create a 3D shape containing two curves.
  1. In the Reference box, select the line.
  2. In the Definition box, select a curve.
    The law is computed as the distance between points on the reference line and their matching points onto the curve.
  3. In the Scaling box, define the law amplitude by entering a value or using the graphic handles.
    When the law is applied to a geometric element, the latter usually is not of the same length as the reference line. Therefore a linear mapping is applied between the reference line and the element the law is applied to, resulting in a scaling of the law.
  4. Select the Heterogeneous Law check box to define the applied law unit (none for ratio law; degree, radian, or grade for angle law) and the distance measure units (current unit by default).
    Two conversions will be performed during the law evaluation:
    • conversion from the model unit (millimeters) to the stored measure unit.

    • conversion from the stored applied law unit to the model unit (degrees) in case of an angle.

  5. Click OK.
  6. From the Wireframe section of the action bar, click Parallel Curve .
  7. In the Parallel Curve Definition dialog box, click Law....
  8. Select Law.1 from the tree.
  9. Click Close.
    The law is applied to the selected element.
    Important: Selecting a published law from another representation is not allowed.