vcgSubdivide {Rvcg}

subdivide the triangles of a mesh

Description

subdivide the triangles of a mesh

Usage

vcgSubdivide(
  x,
  threshold = NULL,
  type = c("Butterfly", "Loop"),
  looptype = c("loop", "regularity", "continuity"),
  iterations = 3,
  silent = FALSE
)

Arguments

x

triangular mesh of class "mesh3d"

threshold

minimum edge length to subdivide

type

character: algorithm used. Options are Butterfly and Loop (see notes)

looptype

character: method for type = loop options are "loop","regularity","continuity" (see notes)

iterations

integer: number of iterations

silent

logical: suppress output.

Value

returns subdivided mesh

Note

The different algorithms are (from meshlab description):

• Butterfly Subdivision: Apply Butterfly Subdivision Surface algorithm. It is an interpolated method, defined on arbitrary triangular meshes. The scheme is known to be C1 but not C2 on regular meshes

• Loop Subdivision: Apply Loop's Subdivision Surface algorithm. It is an approximant subdivision method and it works for every triangle and has rules for extraordinary vertices. Options are "loop" a simple subdivision, "regularity" to enhance the meshe's regularity and "continuity" to enhance the mesh's continuity.

Examples

data(humface)
subdivide <- vcgSubdivide(humface,type="Loop",looptype="regularity")