tangentPlane: calculate the orthogonal complement of a 3D-vector

In Morpho: Calculations and Visualisations Related to Geometric Morphometrics

calculate the orthogonal complement of a 3D-vector

Description

calculate the orthogonal complement of a 3D-vector

Usage

crossProduct(x, y, normalize = TRUE)

tangentPlane(x)

Arguments

x	vector of length 3.
y	vector of length 3.
normalize	logical: if TRUE, the resulting vector is normalized

Details

calculate the orthogonal complement of a 3D-vector or the 3D-crossproduct, finding an orthogonal vector to a plane in 3D.

Value

tangentPlane:

crossProduct: returns a vector of length 3.

y	vector orthogonal to x
z	vector orthogonal to x and y

Author(s)

Stefan Schlager

Examples

require(rgl)

x <- c(1,0,0)
y <- c(0,1,0)

#example tangentPlane
z <- tangentPlane(x)
#visualize result
## Not run: 
lines3d(rbind(0, x), col=2, lwd=2)
## show complement
lines3d(rbind(z$y, 0, z$z), col=3, lwd=2)

## End(Not run)
# example crossProduct
z <- crossProduct(x, y)
# show x and y
## Not run: 
lines3d(rbind(x, 0, y), col=2, lwd=2)
# show z
lines3d(rbind(0, z), col=3, lwd=2)

## End(Not run)

Morpho documentation built on Feb. 16, 2023, 10:51 p.m.