cairoRelCurveTo {RGtk2} | R Documentation

## cairoRelCurveTo

### Description

Relative-coordinate version of `cairoCurveTo`. All offsets are relative to the current point. Adds a cubic B<U+00E9>zier spline to the path from the current point to a point offset from the current point by (`dx3`, `dy3`), using points offset by (`dx1`, `dy1`) and (`dx2`, `dy2`) as the control points. After this call the current point will be offset by (`dx3`, `dy3`).

### Usage

    cairoRelCurveTo(cr, dx1, dy1, dx2, dy2, dx3, dy3)

### Arguments

``cr`` | [`Cairo`] a cairo context
``dx1`` | [numeric] the X offset to the first control point
``dy1`` | [numeric] the Y offset to the first control point
``dx2`` | [numeric] the X offset to the second control point
``dy2`` | [numeric] the Y offset to the second control point
``dx3`` | [numeric] the X offset to the end of the curve
``dy3`` | [numeric] the Y offset to the end of the curve

### Details

Given a current point of (x, y), cairo_rel_curve_to(`cr`, `dx1`, `dy1`, `dx2`, `dy2`, `dx3`, `dy3`) is logically equivalent to cairo_curve_to(`cr`, x+`dx1`, y+`dy1`, x+`dx2`, y+`dy2`, x+`dx3`, y+`dy3`).

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

[Package RGtk2 version 2.20.40 Index]