Cinema 4D / BodyPaint 3D Program Documentation Reference Cinema 4D Cinema 4D Prime Mesh Menu
Function available in CINEMA 4D Prime, Visualize, Broadcast, Studio & BodyPaint 3D


If you have an object built only of triangles (e.g., imported from another program), Cinema 4D can try to convert the triangles into quadrangles. This works only as long as the triangles that you want to convert will result in a planar quadrangle. Triangles that cannot be converted are left in their original state. So, Untriangulate works only for triangles that result in planar quadrangles.

If Evaluate Angle is disabled, Cinema 4D tries to convert all triangles to quadrangles. This can result in unwanted edges and shading errors. In such cases, enable Evaluate Angle.

Untriangulate does not affect n-gons.

Evaluate Angle

This option affects the creation of quads and defines the angle at which the resulting quad will be created between two triangles.

Enter a value (e.g., 0.00001) in order to create planar quads (when possible).

Create N-gons

Activate this option if you want to use the triangles to create a common N-gon. The value defined in the Angle setting will be used automatically.


Use this setting to define the angle the algorithm should use to determine at which point two triangles should be combined to create a common N-gon. Defining very high values here will almost always lead to extremely non-planar polygons (in the case of N-gons it will result in simplified geometry with fewer points), which is something you want to avoid.