cairoPatternCreateRadial: cairoPatternCreateRadial
In RGtk2: R Bindings for Gtk 2.8.0 and Above

Description Usage Arguments Details Value Author(s)

Creates a new radial gradient CairoPattern between the two circles defined by (cx0, cy0, radius0) and (cx1, cy1, radius1). Before using the gradient pattern, a number of color stops should be defined using cairoPatternAddColorStopRgb or cairoPatternAddColorStopRgba.

1	cairoPatternCreateRadial(cx0, cy0, radius0, cx1, cy1, radius1)

`cx0`	[numeric] x coordinate for the center of the start circle
`cy0`	[numeric] y coordinate for the center of the start circle
`radius0`	[numeric] radius of the start circle
`cx1`	[numeric] x coordinate for the center of the end circle
`cy1`	[numeric] y coordinate for the center of the end circle
`radius1`	[numeric] radius of the end circle

Note: The coordinates here are in pattern space. For a new pattern, pattern space is identical to user space, but the relationship between the spaces can be changed with cairoPatternSetMatrix.

[CairoPattern] the newly created CairoPattern if successful, or an error pattern in case of no memory. This function will always return a valid pointer, but if an error occurred the pattern status will be set to an error. To inspect the status of a pattern use cairoPatternStatus.

Derived by RGtkGen from GTK+ documentation

RGtk2 documentation built on Oct. 14, 2021, 5:08 p.m.