calculateConnections: Calculate connections for a pedigree dataset

Description

Computes graphical connection paths for a pedigree layout, including parent-child, sibling, and spousal connections. Optionally processes duplicate appearances of individuals (marked as `extra`) to ensure relational accuracy.

Usage

calculateConnections(
  ped,
  config = list(),
  spouseID = "spouseID",
  personID = "personID",
  momID = "momID",
  famID = "famID",
  twinID = "twinID",
  dadID = "dadID"
)

Value

A `data.frame` containing connection points and midpoints for graphical rendering. Includes:

`x_pos`, `y_pos`: positions of focal individual
`x_dad`, `y_dad`, `x_mom`, `y_mom`: parental positions (if available)
`x_spouse`, `y_spouse`: spousal positions (if available)
`x_midparent`, `y_midparent`: midpoint between parents
`x_mid_sib`, `y_mid_sib`: sibling group midpoint
`x_mid_spouse`, `y_mid_spouse`: midpoint between spouses

Arguments

ped: A data frame containing the pedigree data. Needs personID, momID, and dadID columns
config: List of configuration parameters. Currently unused but passed through to internal helpers.
spouseID: Character string specifying the column name for spouse IDs. Defaults to "spouseID".
personID: Character string specifying the column name for individual IDs. Defaults to "personID".
momID: Character string specifying the column name for mother IDs. Defaults to "momID".
famID: Character string specifying the column name for family IDs. Defaults to "famID".
twinID: Character string specifying the column name for twin IDs. Defaults to "twinID".
dadID: Character string specifying the column name for father IDs. Defaults to "dadID".