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geom_oscar <- function(mapping = NULL, data = NULL,
...,
na.rm = FALSE,
show.legend = NA,
inherit.aes = TRUE) {
stat = "oscar"
position = "identity"
layer(
data = data,
mapping = mapping,
stat = stat,
geom = GeomOscar,
position = position,
show.legend = show.legend,
inherit.aes = inherit.aes,
params = list(
na.rm = na.rm,
...
)
)
}
StatOscar<- ggplot2::ggproto("StatOscar", Stat,
required_aes = c("xmin", "xmax", "ymin", "ymax"),
default_aes = ggplot2::aes(
l_fill = "blue", r_fill = "red", colour = NA, size = 0.1, linetype = 1, alpha = NA
),
required_aes = c("x", "y"),
compute_panel = function(data, scales) {
data
}
)
stat_oscar <- function(mapping = NULL, data = NULL, geom = "oscar",
position = "identity", na.rm = FALSE, n = 500, revolutions = NULL,
show.legend = NA, inherit.aes = TRUE, ...) {
layer(
stat = StatOscar, data = data, mapping = mapping, geom = geom,
position = position, show.legend = show.legend, inherit.aes = inherit.aes,
params = list(na.rm = na.rm, ...)
)
}
GeomOscar <- ggplot2::ggproto("GeomOscar", ggplot2::Geom,
default_aes = ggplot2::aes(
l_fill = "blue", r_fill = "red", colour = NA, size = 0.1, linetype = 1, alpha = NA
),
draw_panel = function(self, data, panel_params, coord) {
coords <- coord$transform(data, panel_params)
lapply(1:length(coords$xmin), function(i) {
oscarGrob(
name = as.character(i),
coords$xmin[i], coords$ymax[i],
width = (coords$xmax[i] - coords$xmin[i]),
height = (coords$ymax[i] - coords$ymin)[i],
default.units = "native",
gpbl = grid::gpar(
col = coords$colour[i],
fill = alpha(coords$l_fill[i], coords$alpha[i]),
lwd = coords$size[i] * .pt,
lty = coords$linetype[i],
lineend = "butt"
),
gptr = grid::gpar(
col = coords$colour[i],
fill = alpha(coords$r_fill[i], coords$alpha[i]),
lwd = coords$size[i] * .pt,
lty = coords$linetype[i],
lineend = "butt"
)
)
}) -> gl
grobs <- do.call(grid::gList, gl)
ggname("geom_oscar", grid::grobTree(children = grobs))
},
draw_key = ggplot2::draw_key_polygon
)