Convert object to a triangular mesh

Converts the quads in a mesh version of an object to triangles by splitting them up. Optionally drops any point or segment components.

as.tmesh3d(x, ...)
# S3 method for default
as.tmesh3d(x, drop = FALSE, ...)
# S3 method for mesh3d
as.tmesh3d(x, drop = FALSE, keepTags = FALSE, ...)

Arguments

x: An object from which to create a triangular mesh object.
drop: If TRUE, drop any point or segment components.
keepTags: Whether to include the "tags" component in the output.
...: Ignored in the mesh3d method, passed to as.mesh3d in the default method.

Details

The default method simply calls as.mesh3d(x, ...) and passes the result to the "mesh3d" method.

Note

Older versions of rgl had a "tmesh3d" class for meshes of triangles. That class is no longer used: as.tmesh3d and tmesh3d both produce "mesh3d" objects.

Value

A "mesh3d" object containing no quads. If drop = TRUE, it will only contain triangles.

If keepTags = TRUE, a "tags" element will be added to the result. For details, see the clipMesh3d

help page.

Author

Duncan Murdoch

Examples

x <- cuboctahedron3d()
x             # has quads and triangles
#>  mesh3d object with 12 vertices, 8 triangles, 6 quads.
as.tmesh3d(x) # has only triangles
#>  mesh3d object with 12 vertices, 20 triangles.