# What is subdivision surface Cinema 4D?

## What is subdivision surface Cinema 4D?

A Subdivision Surface (SubD) is any polygonal surface that has then had an effect applied that “smoothes” the original surface by adding more resolution (more polygons), and modifying the final surface shape by analyzing the contributing polygons from the original surface.

## How do I add more subdivisions in c4d?

There are many ways to subdivide stuff in Cinema 4D. If you have a parametric object, you can easily increase the number of segments in the Object Manager. If you’re working with editable polygons (which you most likely are), you can subdivide using HyperNURBs or by going to Mesh>Commands>Subdivide.

How do you subdivide a spline?

Subdivision spline curves

2. Insert new vertices at the midpoints (the splitting step) P2i0 = Pi , P2i+10 = (Pi + Pi+1 )/2.
3. Average each vertex with the “next” neighbor M times (the averaging step)
4. Repeat splitting and averaging N times.

### What is polygon in Cinema 4D?

Polygons are the building blocks of 3D, stitched together to create the objects of your imagination. With Cinema 4D’s complete polygonal modeling toolset, it’s easy to craft everything from cars to creatures.

### How is a polygon shape?

A polygon is a flat, two-dimensional (2D) shape with straight sides that is fully closed (all the sides are joined up). The sides must be straight. Polygons may have any number of sides. A shape with curved sides is not a polygon.

How do you subdivide a Bezier spline?

So, dividing a Bézier curve into two is remarkably easy; just interpolate between start and control points by t, and get the end point for t. To get the other side; interpolate between end and control points by 1−t, and get the start point for t.

## What is a spline knot?

towardsdatascience.com. Splines. Splines are simply parts of the whole polynomial line. The line is split into few knots where every two knots are connected by a polynomial line which is determined by the user. This essentially eliminates the influence of a single data point on the global polynomial curve.