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# Draw one shape based in relative node points.
#===Options
#
# * <tt>:x and :y</tt> - Initial position.
# * <tt>:content</tt> - Facade to ShapeContent with same parameters.
# * <tt>:border</tt> - Facade to Border with same parameters.
#===Examples
#
# doc.polygon :x => 3.5, :y => 5.5 do
# node :x => 4, :y => 0
# node :x => 0, :y => -4
# node :x => -4, :y => 0
# node :x => 0, :y => 4
# end
#
# link:images/polygon01.png
#
# doc.polygon :x => 3.5, :y => 4.5 do
# node :x => 2, :y => 2
# node :x => 2, :y => -2
# node :x => -2, :y => -2
# end
#
# link:images/polygon02.png
#
# doc.polygon :x => 1, :y => 5, :border => {:width => 2, :linejoin => 1} do
# node :x => 2, :y => 2/2
# node :x => 2*2,:y => -2
# node :x => -1, :y => -3
# node :x => 2, :y => 1
# node :x => 3, :y => 2
# end
#
# link:images/polygon03.png
class RGhost::Polygon < RGhost::PsObject
attr_reader :points
DEFAULT_OPTIONS = {
x: :limit_left,
y: :current_row,
content: RGhost::ShapeContent::DEFAULT_OPTIONS,
border: RGhost::Border::DEFAULT_OPTIONS
}
def initialize(options = {}, &block)
super("") {}
@options = DEFAULT_OPTIONS.dup.merge(options)
@points = []
instance_eval(&block) if block
end
# Creates new relative point by :x => 2 and :y => 4. Used as instance_eval
def node(point)
@points << point
end
def ps
graph = RGhost::Graphic.new
graph.set RGhost::Cursor.moveto(@options)
graph.set RGhost::Border.new(@options[:border]) if @options[:border]
@points.each { |p| graph.set RGhost::Line.rlineto(p) }
graph.raw :closepath
# graph.raw :gsave
graph.set RGhost::ShapeContent.new(@options[:content]) if @options[:content]
# graph.raw :grestore
graph.raw :stroke
graph
end
end
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