RGtk2: cairoArcNegative – R documentation

Become an expert in R — Interactive courses, Cheat Sheets, certificates and more!

cairoArcNegative

Description

Adds a circular arc of the given radius to the current path. The arc is centered at (xc, yc), begins at angle1 and proceeds in the direction of decreasing angles to end at angle2. If angle2 is greater than angle1 it will be progressively decreased by 2*M_PI until it is less than angle1.

Usage

cairoArcNegative(cr, xc, yc, radius, angle1, angle2)

Arguments

`cr`	[`Cairo`] a cairo context
`xc`	[numeric] X position of the center of the arc
`yc`	[numeric] Y position of the center of the arc
`radius`	[numeric] the radius of the arc
`angle1`	[numeric] the start angle, in radians
`angle2`	[numeric] the end angle, in radians

Details

See cairoArc for more details. This function differs only in the direction of the arc between the two angles.

Author(s)

Derived by RGtkGen from GTK+ documentation

RGtk2

R Bindings for Gtk 2.8.0 and Above

v2.20.36

GPL

Authors

Michael Lawrence <michafla@gene.com> and Duncan Temple Lang <duncan@wald.ucdavis.edu>

Initial release