Class RGhost::Line
In: line.rb
Parent: RGhost::PsObject

Creates straight lines

Methods

lineto   rlineto  

Constants

DEFAULT_POINT = {:x => :limit_left , :y => :current_row}

Public Class methods

lineto(point={})

Draw line the one pont until another, the first point is creates by moveto and de last point using the method lineto.

Examples

 doc=Document.new
 doc.moveto :x => 2, :y => 3
 doc.lineto :x => 5, :y => 2


 doc=Document.new
 doc.moveto :x => 2, :y => 3
 doc.lineto :x => 4, :y => 4


 doc=Document.new
 doc.border :color => '#AAFA49', :width => 4
 doc.moveto :x => 2, :y => 3
 doc.lineto :x => 4, :y => 1


 doc=Document.new
 doc.border :color => '#49AAFA', :width => 1
 doc.moveto :x => 2, :y => 3
 doc.lineto :x => 4, :y => 1
 doc.moveto :x => 2, :y => 3
 doc.lineto :x => 2, :y => 1

Using graphic state to close path shape 

 doc=Document.new
 doc.graphic do
   doc.border :color => '#49AAFA', :width => 1
   doc.moveto :x => 2, :y => 3
   doc.lineto :x => 4, :y => 1
   doc.lineto :x => 2, :y => 1
   doc.shape_content :color => "#F0FFFF"
   doc.closepath
 end

rlineto(point={})

(Relative lineto) Draw straingh line in the same manner as lineto, but from current point to distance for next :x and :y. That is, rlineto constructs a line from (x, y) to (x + dx, y + dy) and makes (x + dx, y + dy) the new current point.

Examples

 doc=Document.new
 doc.moveto  :x => 2, :y => 1
 doc.rlineto :x => 3, :y => 2


 doc=Document.new
 doc.moveto  :x => 2, :y => 1
 doc.rlineto :x => 3, :y => 2
 doc.rlineto :x => 0, :y => -2

[Validate]