Class: HexaPDF::Content::GraphicObject::Geom2D

Inherits:
Object
  • Object
show all
Defined in:
lib/hexapdf/content/graphic_object/geom2d.rb

Overview

This class provides support for drawing Geom2D objects like line segments and polygons.

See: Geom2D - github.com/gettalong/geom2d

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Geom2D

Creates a Geom2D drawing support object.



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# File 'lib/hexapdf/content/graphic_object/geom2d.rb', line 63

def initialize
  @object = nil
  @point_radius = 1
  @path_only = false
end

Instance Attribute Details

#object ⇒ Object

The Geom2D object that should be drawn



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# File 'lib/hexapdf/content/graphic_object/geom2d.rb', line 54

def object
  @object
end

#path_only ⇒ Object

Specifies whether only paths should be drawn or if they should be stroked/filled too



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# File 'lib/hexapdf/content/graphic_object/geom2d.rb', line 60

def path_only
  @path_only
end

#point_radius ⇒ Object

The radius to use when drawing Geom2D::Point objects; defaults to 1



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# File 'lib/hexapdf/content/graphic_object/geom2d.rb', line 57

def point_radius
  @point_radius
end

Class Method Details

.configure(**kwargs) ⇒ Object

Creates and configures a new Geom2D drawing support object.

See #configure for the allowed keyword arguments.



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# File 'lib/hexapdf/content/graphic_object/geom2d.rb', line 49

def self.configure(**kwargs)
  new.configure(kwargs)
end

Instance Method Details

#configure(object:, point_radius: nil, path_only: nil) ⇒ Object

Configures the Geom2D drawing support object. The following arguments are allowed:

:object

The object that should be drawn.

:point_radius

The radius of the points when drawing points.

:path_only

Whether only the path should be drawn.

Any arguments not specified are not modified and retain their old value, see the getter methods for the inital values.

Returns self.



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# File 'lib/hexapdf/content/graphic_object/geom2d.rb', line 79

def configure(object:, point_radius: nil, path_only: nil)
  @object = object
  @point_radius = point_radius if point_radius
  @path_only = path_only if path_only
  self
end

#draw(canvas) ⇒ Object

Draws the Geom2D object onto the given Canvas.



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# File 'lib/hexapdf/content/graphic_object/geom2d.rb', line 87

def draw(canvas)
  case @object
  when ::Geom2D::Point then draw_point(canvas)
  when ::Geom2D::Segment then draw_segment(canvas)
  when ::Geom2D::Polygon then draw_polygon(canvas)
  when ::Geom2D::PolygonSet then draw_polygon_set(canvas)
  else
    raise HexaPDF::Error, "Object of type #{@object.class} unusable"
  end
end