R/RcppExports.R

In ggrepel: Automatically Position Non-Overlapping Text Labels with 'ggplot2'

# Generated by using Rcpp::compileAttributes() -> do not edit by hand
# Generator token: 10BE3573-1514-4C36-9D1C-5A225CD40393

#' Euclidean distance between two points.
#' @param a A point.
#' @param b A point.
#' @return The distance between two points.
#' @noRd
NULL

#' Squared Euclidean distance between two points.
#' @param a A point.
#' @param b A point.
#' @return The distance between two points.
#' @noRd
NULL

#' Move a box into the area specificied by x limits and y limits.
#' @param b A box like \code{c(x1, y1, x2, y2)}
#' @param xlim A Point with limits on the x axis like \code{c(xmin, xmax)}
#' @param ylim A Point with limits on the y axis like \code{c(xmin, xmax)}
#' @param force Magnitude of the force (defaults to \code{1e-6})
#' @noRd
NULL

#' Get the coordinates of the center of a box.
#' @param b A box like \code{c(x1, y1, x2, y2)}
#' @noRd
NULL

#' Test if a box overlaps another box.
#' @param a A box like \code{c(x1, y1, x2, y2)}
#' @param b A box like \code{c(x1, y1, x2, y2)}
#' @noRd
NULL

#' Test if a box overlaps another box.
#' @param a A box like \code{c(x1, y1, x2, y2)}
#' @param b A box like \code{c(x1, y1, x2, y2)}
#' @noRd
NULL

#' Compute the repulsion force upon point \code{a} from point \code{b}.
#'
#' The force decays with the squared distance between the points, similar
#' to the force of repulsion between magnets.
#'
#' @param a A point like \code{c(x, y)}
#' @param b A point like \code{c(x, y)}
#' @param force Magnitude of the force (defaults to \code{1e-6})
#' @param direction direction in which to exert force, either "both", "x", or "y"
#' @noRd
NULL

#' Compute the spring force upon point \code{a} from point \code{b}.
#'
#' The force increases with the distance between the points, similar
#' to Hooke's law for springs.
#'
#' @param a A point like \code{c(x, y)}
#' @param b A point like \code{c(x, y)}
#' @param force Magnitude of the force (defaults to \code{1e-6})
#' @param direction direction in which to exert force, either "both", "x", or "y"
#' @noRd
NULL

#' Euclidean distance between two points.
#' @param a A numeric vector.
#' @param b A numeric vector.
#' @return The distance between two points.
#' @noRd
euclid <- function(a, b) {
    .Call('_ggrepel_euclid', PACKAGE = 'ggrepel', a, b)
}

#' Get the coordinates of the center of a box.
#' @param b A box like \code{c(x1, y1, x2, y2)}
#' @noRd
centroid <- function(b, hjust, vjust) {
    .Call('_ggrepel_centroid', PACKAGE = 'ggrepel', b, hjust, vjust)
}

#' Find the intersections between a line and a rectangle.
#' @param c A circle like \code{c(x, y, r)}
#' @param r A rectangle like \code{c(x1, y1, x2, y2)}
#' @noRd
intersect_circle_rectangle <- function(c, r) {
    .Call('_ggrepel_intersect_circle_rectangle', PACKAGE = 'ggrepel', c, r)
}

#' Find the intersection between a line and a circle.
#' @param p1 A point on the line like \code{c(x, y)}
#' @param p2 A point at the circle's center
#' @param r The circle's radius
#' @noRd
intersect_line_circle <- function(p1, p2, r) {
    .Call('_ggrepel_intersect_line_circle', PACKAGE = 'ggrepel', p1, p2, r)
}

#' Find the intersections between a line and a rectangle.
#' @param p1 A point like \code{c(x, y)}
#' @param p2 A point like \code{c(x, y)}
#' @param b A rectangle like \code{c(x1, y1, x2, y2)}
#' @noRd
intersect_line_rectangle <- function(p1, p2, b) {
    .Call('_ggrepel_intersect_line_rectangle', PACKAGE = 'ggrepel', p1, p2, b)
}

select_line_connection <- function(p1, b) {
    .Call('_ggrepel_select_line_connection', PACKAGE = 'ggrepel', p1, b)
}

approximately_equal <- function(x1, x2) {
    .Call('_ggrepel_approximately_equal', PACKAGE = 'ggrepel', x1, x2)
}

#' Adjust the layout of a list of potentially overlapping boxes.
#' @param data_points A numeric matrix with rows representing points like
#'   \code{rbind(c(x, y), c(x, y), ...)}
#' @param point_size A numeric vector representing the sizes of data points.
#' @param point_padding_x Padding around each data point on the x axis.
#' @param point_padding_y Padding around each data point on the y axis.
#' @param boxes A numeric matrix with rows representing boxes like
#'   \code{rbind(c(x1, y1, x2, y2), c(x1, y1, x2, y2), ...)}
#' @param xlim A numeric vector representing the limits on the x axis like
#'   \code{c(xmin, xmax)}
#' @param ylim A numeric vector representing the limits on the y axis like
#'   \code{c(ymin, ymax)}
#' @param force Magnitude of the force (defaults to \code{1e-6})
#' @param max_time Maximum number of seconds to try to resolve overlaps
#'   (defaults to 0.1)
#' @param max_iter Maximum number of iterations to try to resolve overlaps
#'   (defaults to 2000)
#' @noRd
repel_boxes2 <- function(data_points, point_size, point_padding_x, point_padding_y, boxes, xlim, ylim, hjust, vjust, force_push = 1e-7, force_pull = 1e-7, max_time = 0.1, max_overlaps = 10, max_iter = 2000L, direction = "both", verbose = 0L) {
    .Call('_ggrepel_repel_boxes2', PACKAGE = 'ggrepel', data_points, point_size, point_padding_x, point_padding_y, boxes, xlim, ylim, hjust, vjust, force_push, force_pull, max_time, max_overlaps, max_iter, direction, verbose)
}