NURBS Curve Modeling

Creating solid geometries using NURBS curve modeling

WIZEgem introduces a new interactive curve modeling (using NURBS). You can use a ready-made simple 3D geometries and edit them or create your own custom shape. It is very easy to use even if you don’t have experience in curve modeling.

Design steps:

  1. Select necklace jewelry type and from “solid geometries” set select a base element (if you create new it doesn’t matter which one).
    The design is composed of at least one stage where you define the model in a semi-automatic way (and partially uniform) and an optional second stage where you can manually and in a full non uniform way.
    Let’s start with the first stage
  2. Press edit and then select “new/edit curves” edit marker or press “Free” button to start the free hand mode and then press start.
  3. Press “Delete path” to delete all current curves or edit each by selecting it.
    We define the 3D model by using 2 curves – horizontal curve (u) and vertical curve (v), where your 3D model is a combination of both. You can look at it as horizontal planes as defined by the horizontal curve along a vertical curve which scales it.
  4. Edit/create new horizontal curve – this curve defines the XZ (horizontal) shape of your model. You need first to choose if it consists of straight lines (degree = 1) or round curves (degree = 2). Then add your curves and move your control points to create a closed path. The horizontal curve will actually define the maximum horizontal plane of your model.
    Cur1
  5. Edit/create new vertical curve – this curve defines the YZ (vertical) shape of your model. You need first to choose if it consists of straight lines (degree = 1) or round curves (degree = 2). Then add your curves and move your control points to create non closed path. The Y value of this curve defines the Y location of the previously defined horizontal plane and the X value defines how (relatively) to scale it.
    Cur2
  6.  Press done.
    Now we will continue with the second stage.
  7. Press edit and then select “edit geometry” edit marker or press “Free” button to start the free hand mode, select geometry in the drop down menu and then press start.
  8. Press “edit shape” button on the top left.
  9. Press move button
  10. Click one of the control points you want to move which will add 3 translate markers for each direction
    Cur3
  11. Touch and move one of the markers in the direction you want to move the control point.
    Cur4
  12. Repeat 10-11 for other control points.
  13. Press “Done”.

That’s it!!! You have your curved modeled 3D object.

You can play with different curves and control points or use ready-made curves from our DB (in free hand mode) to better understand the u/v curves and combination.

Share your model to show how a great designer you are.