Class: Draught::ArcBuilder::SegmentBuilder

Inherits:
Object
  • Object
show all
Defined in:
lib/draught/arc_builder.rb

Overview

@api: private Based on learnings from www.tinaja.com/glib/bezcirc2.pdf, via www.whizkidtech.redprince.net/bezier/circle/

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(sweep, start, radius) ⇒ SegmentBuilder

Returns a new instance of SegmentBuilder.



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# File 'lib/draught/arc_builder.rb', line 106

def initialize(sweep, start, radius)
  @sweep, @start, @radius = sweep, start, radius
end

Instance Attribute Details

#radius ⇒ Object (readonly)

Returns the value of attribute radius.



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# File 'lib/draught/arc_builder.rb', line 104

def radius
  @radius
end

#start ⇒ Object (readonly)

Returns the value of attribute start.



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# File 'lib/draught/arc_builder.rb', line 104

def start
  @start
end

#sweep ⇒ Object (readonly)

Returns the value of attribute sweep.



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# File 'lib/draught/arc_builder.rb', line 104

def sweep
  @sweep
end

Instance Method Details

#cubic_bezier ⇒ Object 



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# File 'lib/draught/arc_builder.rb', line 118

def cubic_bezier
  @cubic_bezier ||= CubicBezier.new({
    end_point: end_point, control_point_1: control_point_1, control_point_2: control_point_2
  })
end

#end_point ⇒ Object 



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# File 'lib/draught/arc_builder.rb', line 114

def end_point
  @end_point ||= Point.new(x0, y0).transform(transform)
end

#first_point ⇒ Object 



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# File 'lib/draught/arc_builder.rb', line 110

def first_point
  @first_point ||= Point.new(x0, -y0).transform(transform)
end