Morpho (version 1.0-1)

projRead: Project points onto the closest point on a mesh

Description

project points onto a given surface and return projected points and normals.

Usage

projRead(lm, mesh, readnormals = TRUE, clean = TRUE, smooth = TRUE,
ignore.stdout = FALSE, sign = FALSE, lmdump=NULL, prodump=NULL)

Arguments

lm

m x 3 matrix containing 3D coordinates.

mesh

character: specify path to mesh file.

readnormals

logical: return normals of projected points.

clean

logical: remove dumpfiles.

smooth

logical: rerturn smoothed normals.

ignore.stdout

logical: supress console messages from system calls.

sign

logical: request signed distances.

prodump

character: name of the dumpfile storing the projected points' coordinates (useful when using parallel backend).

lmdump

character: name of the dumpfile storing data to be projected (useful when using parallel backend).

Value

• if readnormals = FALSE, a m x 3 matrix containing projected points is returned, otherwise a list, where
• vb
  3 x m matrix containing projected points
• normals
  3 x m matrix containing normals

References

Detection of inside/outside uses the algorithm proposed in:

Baerentzen, Jakob Andreas. & Aanaes, H., 2002. Generating Signed Distance Fields From Triangle Meshes. Informatics and Mathematical Modelling.

See Also

closemeshKD

Examples

data(nose)
repro <- projRead(shortnose.lm,shortnose.mesh)