linesTetrahedra: Create a Set of Lines with Tetrahetra Centered at Points...

In misc3d: Miscellaneous 3D Plots

Description

Creates a scene consisting of lines made up of small tetrahedra centered at points along them.

Usage

linesTetrahedra(x, y, z, delta=c(min(x[,2]-x[,1])/10,
                                    min(y[,2]-y[,1])/10,
                                    min(z[,2]-z[,1])/10),
                lwd = 0.01, color = "black", ...)

Arguments

x, y, z	numeric vectors of length two or matrices with two columns representing coordinates of starting and ending points of line(s).
delta	numeric; increase in each dimension used to locate points along the lines; recycled to length 3.
lwd	numeric; used for the size of the tetrahedron in each dimension; recycled to length 3.
color	color to use for the tetrahedra.
...	additional arguments to be passed on to makeTriangles.

Details

The function uses the Bresenham's line algorithm to locate points along lines and then creates a triangle mesh scene representing tetrahedra centered at those points.

Value

Returns a triangle mesh scene representing the lines.

See Also

lines3d.

Examples

p <- pointsTetrahedra(x=c(100,100, 257, 257), 
                      y=c(100,100, 257, 257),
                      z=c(100,257, 257, 100), size=1)
l <- linesTetrahedra(x=matrix(c(100,257,
                                100,257), nrow=2, byrow=TRUE),
                     y=matrix(c(100,257,
                                100,257), nrow=2, byrow=TRUE),
                     z=matrix(c(100,257,
                                257,100), nrow=2, byrow=TRUE),
                     lwd=0.4,
                     col="red")
drawScene.rgl(list(p, l))

misc3d documentation built on Oct. 8, 2021, 1:06 a.m.