Houdini 19.0 Shelf tools

RBD Pin Constraint shelf tool

Constrains an object to a point in space using a pin-like connection.

On this page

Overview

This tool can be used, for example, to simulate something swinging from a point. For example, a pendulum swinging or a tire swing at a park.

You need to create an RBD object to apply this constraint to before you can use this tool.

Note

This constraint will not work with packed primitives. However, you can achieve the equivalent using a constraint network, such as the one created by the Glue Adjacent shelf tool.

Using RBD Pin Constraints

  1. Click the RBD Pin Constraint tool on the Rigid Bodies tab.

  2. Select the object to constrain and press Enter to confirm your selection.

  3. Select the position for the pin constraint and press Enter to confirm your selection.

    Note

    You can hold Alt to detach the constraint from the construction plane.

For specific parameter help see the RBD Pin Constraint dynamics node help.

Moving an RBD Pin Constraint

  1. Click the Dynamics Select Mode button on the selector and handle controls toolbar.

  2. Click LMB the constrained object in the scene view.

  3. Click RMB the Dynamics Select Mode button and turn on the Dynamics Modifiers checkbox.

  4. Click LMB the constraint you want to edit and press Enter to display the transformation handles.

Switching to the dynamics level

  1. Click the Dynamics Select Mode button on the selector and handle controls toolbar.

  2. Click LMB the constrained object in the scene view.

See also

Shelf tools

Using the shelf

  • Customize the shelf

    How to change the look of the shelf, change and rearrange its contents, and create your own shelf tools.

Technical