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Drop shadow for a viewport group

Source: R/paint.R
vl_shadow.Rd

Describes a shadow cast by everything drawn inside a vl_viewport(): the group's own silhouette, tinted, blurred and offset, painted underneath it. Because it is a group effect, overlapping shapes inside the viewport cast one shadow together rather than each casting its own onto the others.

Usage

vl_shadow(dx = 2, dy = 2, blur = 3, col = "#00000059")

Arguments

dx, dy

Offset in points; positive dy moves the shadow down.

blur

Blur radius in points. 0 gives a hard offset silhouette.

col

Shadow colour; usually a translucent black.

Value

A vellum_shadow object, for vl_viewport(shadow = ).

See also

vl_viewport()

Examples

vl_scene(3, 2) |>
  push(vl_viewport(width = 0.6, height = 0.6, shadow = vl_shadow())) |>
  draw(circle_grob(gp = vl_gpar(fill = "steelblue", col = NA))) |>
  pop()