Houdini 13.0 Nodes

interface version 1

Fits the input geometry into the bounding box of a secondary geometry.

Inputs

Input Geometry

The geometry to fit or clamp to the bounding box.

Bounding Geometry

The geometry to be used as a bounding box. The geometry can be of any type and shape (only its bounds will be used).

Input Proxy (optional)

If connected, the bounds of this geometry will be used for fitting calculations (instead of the Input Geometry's).

This can be useful for “unusual” geometry types such as metaballs: connect a tessellated version here to get more a accurate fit.

Parameters

Mode

How to fit the input geometry within the bounds of the secondary geometry.

Fit into Box

Apply a non-proportional scaling to the input geometry to fit within bounds.

Clamp to Box Bounds

Clamp the coordinates of each point to be fall within bounds range.

Note

This mode can be useful for geometry with pieces that 'fell' too far (e.g. when trying to add smoke effects to an RBD simulation, where a few RBD pieces fell through the floor or were shot towards 'infinity').

Create Groups Only

Do not modify the geometry itself, just create the point groups (if enabled).

Padding, Low/High

Extra padding distance along the three world axes.

Note

Padding offsets only clamping and group creation but not fitting.

Inside Group

Create a group with the given name, containing the points that are inside the box boundaries.

Outside Group

Create a group with the given name for all the points that fell outside the box boundaries.

Warning

When clamping simulated geometry points (such as RBD fractures), it’s good practice to zero out the velocities of the outlier points. (Even with clamped point positions, large per-point velocities can mess up any following simulation or rendering process.)

Release Notes

interface version 1 —

2013-08-17

Fixed guide display geometry for negative padding values.

2013-06-28

Oops: fixed a deadly typo that messed up results.

2013-04-13

  • More internal cleanups (replaced sloppy work with more proper)

  • Bug fix: Paddings were added twice, fixed

  • Option for outputting primitive groups

  • Bounding box details as node parameters (read-only), for using in expressions, etc.

2013-04-11

Fixed broken functionality + internal cleanups. (operator was completely broken in H12.5).

older versions —

Version 0.0.4

  • Fitting now works on all primitive types (including sphere primitives, metaballs, etc).

  • There’s an optional third input for a tessellated version of the input geometry (to enable more accurate fitting).

  • Added 'create groups only' mode.

  • Guide display options.

Version 0.0.3

  • Options for creating inside/outside point groups.

  • Added guide geometry (padding values included).

Version 0.0.2

Added 'clamp' fitting mode (and Mode parameter).

Version 0.0.1

Initial release.