Draw Polygonal Geometries

Generic function for drawing polygon-based geometry objects. This function extends graphics::polygon() with support for geometry objects such as circle(), ellipse(), regPolygon() and ring() and further remains fully compatible with its original interface. #' For ordinary coordinate vectors the call is forwarded to graphics::polygon(). Geometry objects such as circle(), ellipse(), regPolygon() and ring() are dispatched to specialised methods.

Usage

polygon(x, ...)

# Default S3 method
polygon(
  x,
  y = NULL,
  density = NULL,
  angle = 45,
  border = NULL,
  col = NA,
  lty = par("lty"),
  ...,
  fillOddEven = FALSE
)

# S3 method for class 'ringGeometry'
polygon(x, rule = "evenodd", ...)

# S3 method for class 'polygonGeometry'
polygon(x, ...)

Arguments

x

an object to be drawn.

...

further arguments passed to the corresponding method.

y

numeric vector of y-coordinates.

density

density of shading lines.

angle

angle of shading lines in degrees.

border

border colour.

col

fill colour.

lty

line type.

fillOddEven

logical; should the odd-even rule be used for filling?

rule

character string specifying the filling rule passed to graphics::polypath(). One of "evenodd" or "winding".

Value

Invisibly returns x.

See also

Other geometry.structures: arc(), band(), bezier(), circle(), ellipse(), regPolygon(), ring()

Examples

canvas()

polygon(
  circle(radius = 1),
  col = "lightblue"
)

polygon(
  regPolygon(
    radius = 0.7,
    numVertices = 5
  ),
  border = "red"
)