cairo-transformations: Transformations
In RGtk2: R Bindings for Gtk 2.8.0 and Above

Description Methods and Functions Detailed Description Author(s) References

Manipulating the current transformation matrix

cairoTranslate(cr, tx, ty)
cairoScale(cr, sx, sy)
cairoRotate(cr, angle)
cairoTransform(cr, matrix)
cairoSetMatrix(cr, matrix)
cairoGetMatrix(cr, matrix)
cairoIdentityMatrix(cr)
cairoUserToDevice(cr, x, y)
cairoUserToDeviceDistance(cr, dx, dy)
cairoDeviceToUser(cr, x, y)
cairoDeviceToUserDistance(cr, dx, dy)

The current transformation matrix, ctm, is a two-dimensional affine transformation that maps all coordinates and other drawing instruments from the user space into the surface's canonical coordinate system, also known as the device space.

Derived by RGtkGen from GTK+ documentation

https://www.cairographics.org/manual/cairo-Transformations.html

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