geometry: tetramesh – R documentation

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tetramesh

Render tetrahedron mesh (3D)

Description

tetramesh(T, X, col) uses the rgl package to display the tetrahedrons defined in the m-by-4 matrix T as mesh. Each row of T specifies a tetrahedron by giving the 4 indices of its points in X.

Usage

tetramesh(T, X, col = grDevices::heat.colors(nrow(T)), clear = TRUE,
  ...)

Arguments

`T`	T is a `m`-by-3 matrix in trimesh and `m`-by-4 in tetramesh. A row of `T` contains indices into `X` of the vertices of a triangle/tetrahedron. `T` is usually the output of delaunayn.
`X`	X is an n-by-2/n-by-3 matrix. The rows of X represent `n` points in 2D/3D space.
`col`	The tetrahedron colour. See rgl documentation for details.
`clear`	Should the current rendering device be cleared?
`...`	Parameters to the rendering device. See the rgl package.

Author(s)

Raoul Grasman

Examples

## Not run: 
# example delaunayn
d = c(-1,1)
pc = as.matrix(rbind(expand.grid(d,d,d),0))
tc = delaunayn(pc)

# example tetramesh
clr = rep(1,3) %o% (1:nrow(tc)+1)
rgl::rgl.viewpoint(60,fov=20)
rgl::rgl.light(270,60)
tetramesh(tc,pc,alpha=0.7,col=clr)

## End(Not run)

geometry

Mesh Generation and Surface Tessellation

v0.4.5

GPL (>= 3)

Authors

Jean-Romain Roussel [cph, ctb] (wrote tsearch function with QuadTrees), C. B. Barber [cph], Kai Habel [cph, aut], Raoul Grasman [cph, aut], Robert B. Gramacy [cph, aut], Pavlo Mozharovskyi [cph, aut], David C. Sterratt [cph, aut, cre] (<https://orcid.org/0000-0001-9092-9099>)

Initial release

2019-12-02