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Interface

New

Customizable, gestural Radial menus on the X, C, and V keys for fast access to tools and options.

Improved

Infinite reference plane with rulers. This is distinct from the construction plane, with a separate control on the viewer’s display toolbar.

Improved

Improved the preservation of selections to work more like you'd expect.

Improved

"Sloppy" component selection in the Edit SOP is now an option you can turn off.

Improved

3D Space Mouse support on Windows, Mac, and Linux.

Modeling tools

New

Fast Boolean node with exact predicates and arithmetic, capable of boolean operations and free-form shattering.

New

PolyFill SOP replaces the deprecated PolyCap. Intelligently fills holes in polygonal models with triangles or quads. Together with TopoBuild it replaces PolyKnit as well.

New

Attribute Expression SOP replaces the Point SOP. You must now enter VEX expressions to modify attributes instead of Hscript expressions.

New

Attribute Blur SOP smooths float attribute values. Takes advantage of OpenCL so is very fast on computers with dedicated graphics hardware. Supports uniform and edge weighted blur. Full control over blurring iterations. Can control blur amount with an attribute. Mesh blur mode blurs based on connectivity, point cloud blur mode blurs based on proximity.

New

Compiled SOPs allow parallel cooking and memory savings, and lay the foundation for future improvements.

New

OpenCL SOP lets you run OpenCL code as part of a SOP network.

New

Intersection analysis and stitching nodes for low-level handling of intersecting/touching geometry.

Improved

Enhanced PolyBevel.

Improved

Redesigned Smooth node for 3D and UV smoothing with advanced surface analysis. All tools that use smoothing, such as Topobuild, Edit, and UV Edit now use the new smoothing engine.

Improved

The Normal SOP can now compute normals based on face area, which helps low-res bevels look smooth (set Weighting method to "By face area"). The Normal SOP also has better handling of edge groups.

Improved

The PolyExpand2D node now supports variable width paths.

Improved

The Find Shortest Path SOP now supports storing connectivity and costs in array attributes, to allow finding paths on point clouds.

Changed

The Copy SOP was split into new Copy and Transform, Copy to Points, and Copy Stamp nodes with simpler interfaces.

Changed

The Group SOP was split into multiple new nodes with simpler interfaces.

Alembic

Improved

Support for arbGeomParams on transform nodes.

Improved

Easier manipulation of user properties.

Improved

Re-export Alembic with the same hierarchy.

Improved

Faster Alembic visibility cache.

Misc

New

The new PolyPath SOP helps clean up polygon curve topology.

New

The new Rewire Vertices SOP bulk-reassigns vertices to points based on an attribute.

Improved

The viewport and mantra now support automatically cusped vertex normals.

Improved

Extensive OpenCL support.

Improved

Updated OpenSubdiv from 2.5.1 to 3.0.5.

Improved

Aggressive geometry compression.

Improved

Improved geometry performance and lower memory usage through caching and memory sharing.

Improved

Faster saving and loading of .bgeo files containing many polygon primitives or tetrahedra if saved in Houdini 16. Loading these files in 15.5 or 15.0 requires either a recent build of them, or setting the HOUDINI15_5_GEO_COMPATIBILITY environment variable to 1 when saving in 16.0.

What was new in Houdini 16