cairoRelLineTo: cairoRelLineTo

Description Usage Arguments Details Author(s)

View source: R/cairoFuncs.R

Description

Relative-coordinate version of cairoLineTo. Adds a line to the path from the current point to a point that is offset from the current point by (dx, dy) in user space. After this call the current point will be offset by (dx, dy).

Usage

1
cairoRelLineTo(cr, dx, dy)

Arguments

cr

[Cairo] a cairo context

dx

[numeric] the X offset to the end of the new line

dy

[numeric] the Y offset to the end of the new line

Details

Given a current point of (x, y), cairo_rel_line_to(cr, dx, dy) is logically equivalent to cairo_line_to(cr, x + dx, y + dy).

It is an error to call this function with no current point. Doing so will cause cr to shutdown with a status of CAIRO_STATUS_NO_CURRENT_POINT.

Author(s)

Derived by RGtkGen from GTK+ documentation


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

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