rgl: as.triangles3d – R documentation

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as.triangles3d

Convert an object to triangles

Description

This generic and its methods extract or creates a matrix of coordinates of triangles from an object, suitable for passing to triangles3d.

Usage

as.triangles3d(obj, ...)
## S3 method for class 'rglId'
as.triangles3d(obj,
               attribute = c("vertices", "normals", "texcoords", "colors"),
               subscene = NA,
               ...)

Arguments

`obj`	The object to convert.
`attribute`	Which attribute of an RGL object to extract?
`subscene`	Which subscene is this object in?
`...`	Additional arguments used by the methods.

Details

The method for "rglId" objects can extract several different attributes, organizing them as it would organize the vertices for the triangles.

Value

An n x 3 matrix containing the vertices of triangles making up the object. Each successive 3 rows of the matrix corresponds to a triangle.

If the attribute doesn't exist, NULL will be returned.

Author(s)

Duncan Murdoch

Examples

open3d()
x <- surface3d(x = 1:10, y = 1:10, z = rnorm(100), col = "red")
tri <- as.triangles3d(x)
open3d()
triangles3d(tri, col = "blue")

rgl

3D Visualization Using OpenGL

v0.106.8

GPL

Authors

Duncan Murdoch [aut, cre], Daniel Adler [aut], Oleg Nenadic [ctb], Simon Urbanek [ctb], Ming Chen [ctb], Albrecht Gebhardt [ctb], Ben Bolker [ctb], Gabor Csardi [ctb], Adam Strzelecki [ctb], Alexander Senger [ctb], The R Core Team [ctb, cph], Dirk Eddelbuettel [ctb], The authors of Shiny [cph], The authors of knitr [cph], Jeroen Ooms [ctb], Yohann Demont [ctb], Joshua Ulrich [ctb], Xavier Fernandez i Marin [ctb], George Helffrich [ctb], Ivan Krylov [ctb]

Initial release