Calculate the coordinates of an additional point defined by segments of the structure

Imagine you want to represent some kind of additional point, on the structure, within the structure, outside the structure. As you don't have the data for this representation, this function calculates the coordinates of such additional point based on a linear combination of two segments of the structure.

beyondkick(
  joint,
  num.joint,
  num.frame = NULL,
  num.x,
  num.y,
  origin,
  seg1,
  seg2 = NULL
)

Arguments

joint	The joint dataset: the coordinates of the joints as a function of time
num.joint	The index of the column associated with the joint variable
num.frame	The index of the column associated with the frame variable
num.x	The index of the column associated with the x-axis variable represented on the graphical output
num.y	The index of the column associated with the y-axis variable represented on the graphical output
origin	The origin of the basis, a joint
seg1	A triplet, the definition of the segment in terms of joints, and the coordinate on this segment
seg2	A triplet, the definition of the segment in terms of joints, and the coordinate on this segment

Value

A supplementary dataset to be used with the beyondskeleton function

Examples

if (FALSE) {
data(gaetan_apchagi)
plexus <- beyondkick(joint=gaetan_apchagi, num.joint=2, num.x = 3, num.y =4,
num.frame=6, origin="RIGHT_SHOULDER", seg1 = c("RIGHT_SHOULDER", "LEFT_SHOULDER", 1/2),
seg2=c("RIGHT_SHOULDER", "RIGHT_HIP", 1/2))
}