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#' @export
#' @rdname geom_tile
geom_rect <- function(mapping = NULL, data = NULL,
stat = "identity", position = "identity",
...,
linejoin = "mitre",
na.rm = FALSE,
show.legend = NA,
inherit.aes = TRUE) {
layer(
data = data,
mapping = mapping,
stat = stat,
geom = GeomRect,
position = position,
show.legend = show.legend,
inherit.aes = inherit.aes,
params = list2(
linejoin = linejoin,
na.rm = na.rm,
...
)
)
}
#' @rdname ggplot2-ggproto
#' @format NULL
#' @usage NULL
#' @export
GeomRect <- ggproto("GeomRect", Geom,
default_aes = aes(colour = NA, fill = "grey35", linewidth = 0.5, linetype = 1,
alpha = NA),
required_aes = c("xmin", "xmax", "ymin", "ymax"),
draw_panel = function(self, data, panel_params, coord, lineend = "butt", linejoin = "mitre") {
data <- check_linewidth(data, snake_class(self))
if (!coord$is_linear()) {
aesthetics <- setdiff(
names(data), c("x", "y", "xmin", "xmax", "ymin", "ymax")
)
index <- rep(seq_len(nrow(data)), each = 4)
new <- data[index, aesthetics, drop = FALSE]
new$x <- vec_interleave(data$xmin, data$xmax, data$xmax, data$xmin)
new$y <- vec_interleave(data$ymax, data$ymax, data$ymin, data$ymin)
new$group <- index
ggname("geom_rect", GeomPolygon$draw_panel(
new, panel_params, coord, lineend = lineend, linejoin = linejoin
))
} else {
coords <- coord$transform(data, panel_params)
ggname("geom_rect", rectGrob(
coords$xmin, coords$ymax,
width = coords$xmax - coords$xmin,
height = coords$ymax - coords$ymin,
default.units = "native",
just = c("left", "top"),
gp = gpar(
col = coords$colour,
fill = fill_alpha(coords$fill, coords$alpha),
lwd = coords$linewidth * .pt,
lty = coords$linetype,
linejoin = linejoin,
lineend = lineend
)
))
}
},
draw_key = draw_key_polygon,
rename_size = TRUE
)
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