Meshing rules of SubD

SubDs in Rhino may be meshed in three different methods for rendering, viewport display, surface analysis, and mesh conversion. The three meshing methods are static, adaptive, and absolute.

Static meshing

How many mesh quads are created per SubD quad is based on the face count of the SubD.

Face count

Per SubD

1-2000

2001-8000

8001-32K

>32K

Mesh quads
per SubD quad

16x16

8x8

4x4

2x2

Adaptive meshing

How many mesh quads are created per SubD quad is based on the face count of the SubD and the Density or Level sliders in meshing dialog boxes.

Detailed
Level

Simple

Density

1-500

SubD faces

501-2000

SubD faces

2001-8000

SubD faces

8001-32K

SubD faces

>32K
SubD faces

1

0%

2x2

2x2

2x2

2x2

2x2

2

1-19%

4x4

4x4

4x4

4x4

3

20-34%

8x8

8x8

8x8

4

35-75%

16x16

16x16

5

76-100%

32x32

Absolute meshing

How many mesh quads are created per SubD quad is based on the Level slider. No other factor is involved.

Level

Mesh quads

per SubD quad

1

2x2

2

4x4

3

8x8

4

16x16

5

32x32

Reference table

This table shows where in Rhino the three meshing methods are used.

 

Static

meshing

Adaptive

meshing

Absolute

meshing

Use

Document Properties

> Mesh

Jagged and faster

   

Smooth and slower

   

Custom

Simple > Density

   

Detailed > Level

   

Object Properties

> Custom mesh

Simple > Density

   

Detailed > Level

   

Surface analysis commands

> Adjust mesh

Simple > Density

   

Detailed > Level

   
Mesh command / export

Simple > Density

   

Detailed > Level

   

= For shaded viewports (Shaded, Rendered, Ghosted, and Xray modes)

= For the Raytraced viewport and final rendering

= For surface analysis

= For mesh conversion

 

 

 

Rhinoceros 7 © 2010-2022 Robert McNeel & Associates. 28-Jun-2022