RGtk2 (version 2.20.31)

cairoRelLineTo: cairoRelLineTo

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

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.