Draw an arc on a canvas

Source: R/tk-canvas.R

Draw an arc on a canvas

canvas_arc(
  canvas,
  x1,
  y1,
  x2,
  y2,
  start,
  extent,
  style,
  fill,
  outline,
  width,
  dash,
  ...
)

Arguments

canvas

a tic_ui 'canvas' element.

x1, y1, x2, y2

he coordinates of two diagonally opposite corners of a rectangular region enclosing the oval that defines the arc

start

starting angle of arc in degrees measured counter-clockwise from the "3 o'clock" position. Value in range [-360, 360]

extent

Size of te angle range occupied by the arc. Value in range [-360, 360]

style

how to draw the arc. One of: pieslice (default), chord, fill

pieslice

the arc's region is defined by a section of the oval's perimeter plus two line segments, one between the center of the oval and each end of the perimeter section

chord

the arc's region is defined by a section of the oval's perimeter plus a single line segment connecting the two end points of the perimeter section

arc

the arc's region consists of a section of the perimeter alone. In thiscase the fill option is ignored.

fill

line colour

outline

outline colour

width

line width e.g. width = 2

dash

Specifies the line's dash pattern. This should be a numeric vector with alternating lengths of "dash" and "space-between-dash". E.g. dash = c(6, 4, 2, 4) produces a dotted-dashed line

...

other line creation options. See https://www.tcl.tk/man/tcl8.6/TkCmd/canvas.html#M26