Basic usage

All objects inherit the PsObject class, so they all share the main methods set, raw, call and ps. To create a PSObject you pass a string (or block). Example:

Using postscript commands

ps=RGhost::PsObject.new(' 1 5 2 mul add')

Calling an object, function or variable directly from the postscript stack

ps=RGhost::PsObject.new
ps.call :showpage

Writing directly to the stack

ps=RGhost::PsObject.new
ps.raw '(string text) show'

Creating a PSObject in a block.

ps=RGhost::PsObject.new do |p|
  p.raw '1 5'
  p.raw '2'
  p.raw 'mul'
  p.raw 'add'
end

The main class is Document. The Document class is a PsFacade; most methods are defined in this class. Normally in examples you will see the doc.method options … . You can work with RGhost in two ways.
(recommended)

require 'rubygems'
require 'rghost'
include RGhost
doc=Document.new

or

require 'rubygems'
require 'rghost'
doc=RGhost::Document.new