Class: Rough::Generator

Inherits:
Object
  • Object
show all
Defined in:
lib/rough/generator.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(**config_options) ⇒ Generator

Returns a new instance of Generator.



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# File 'lib/rough/generator.rb', line 14

def initialize(**config_options)
  @default_options = ResolvedOptions.new(**config_options)
end

Instance Attribute Details

#default_options ⇒ Object (readonly)

Returns the value of attribute default_options.



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# File 'lib/rough/generator.rb', line 12

def default_options
  @default_options
end

Class Method Details

.new_seed ⇒ Object 



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# File 'lib/rough/generator.rb', line 18

def self.new_seed
  Random.new_seed
end

Instance Method Details

#arc(x, y, width, height, start, stop, closed: false, **options) ⇒ Object 



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# File 'lib/rough/generator.rb', line 72

def arc(x, y, width, height, start, stop, closed: false, **options)
  o = _o(options)
  paths = []
  outline = Renderer.arc(x, y, width, height, start, stop, closed, true, o)
  if closed && o.fill
    if o.fill_style == "solid"
      fill_options = o.merge(disable_multi_stroke: true)
      shape = Renderer.arc(x, y, width, height, start, stop, true, false, fill_options)
      shape.type = :fillPath
      paths << shape
    else
      paths << Renderer.pattern_fill_arc(x, y, width, height, start, stop, o)
    end
  end
  paths << outline if o.stroke != "none"
  _d("arc", paths, o)
end

#circle(x, y, diameter, **options) ⇒ Object 



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# File 'lib/rough/generator.rb', line 61

def circle(x, y, diameter, **options)
  ret = ellipse(x, y, diameter, diameter, **options)
  ret.shape = "circle"
  ret
end

#curve(points, **options) ⇒ Object 



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# File 'lib/rough/generator.rb', line 90

def curve(points, **options)
  o = _o(options)
  paths = []
  outline = Renderer.curve(points, o)
  if o.fill && o.fill != "none"
    if o.fill_style == "solid"
      fill_shape = Renderer.curve(points, o.merge(
        disable_multi_stroke: true,
        roughness: (o.roughness != 0) ? (o.roughness + o.fill_shape_roughness_gain) : 0
      ))
      paths << OpSet.new(type: :fillPath, ops: _merged_shape(fill_shape.ops))
    else
      poly_points = []
      input_points = points
      if input_points.length > 0
        p1 = input_points[0]
        points_list = p1[0].is_a?(Numeric) ? [input_points] : input_points
        points_list.each do |pts|
          if pts.length < 3
            poly_points.concat(pts)
          elsif pts.length == 3
            poly_points.concat(
              PointsOnCurve.points_on_bezier_curves(
                PointsOnCurve.curve_to_bezier([pts[0], pts[0], pts[1], pts[2]]),
                10, (1 + o.roughness) / 2.0
              )
            )
          else
            poly_points.concat(
              PointsOnCurve.points_on_bezier_curves(
                PointsOnCurve.curve_to_bezier(pts), 10, (1 + o.roughness) / 2.0
              )
            )
          end
        end
      end
      paths << Renderer.pattern_fill_polygons([poly_points], o) if poly_points.length > 0
    end
  end
  paths << outline if o.stroke != "none"
  _d("curve", paths, o)
end

#ellipse(x, y, width, height, **options) ⇒ Object 



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# File 'lib/rough/generator.rb', line 43

def ellipse(x, y, width, height, **options)
  o = _o(options)
  paths = []
  ellipse_params = Renderer.generate_ellipse_params(width, height, o)
  ellipse_response = Renderer.ellipse_with_params(x, y, o, ellipse_params)
  if o.fill
    if o.fill_style == "solid"
      shape = Renderer.ellipse_with_params(x, y, o, ellipse_params)[:opset]
      shape.type = :fillPath
      paths << shape
    else
      paths << Renderer.pattern_fill_polygons([ellipse_response[:estimated_points]], o)
    end
  end
  paths << ellipse_response[:opset] if o.stroke != "none"
  _d("ellipse", paths, o)
end

#line(x1, y1, x2, y2, **options) ⇒ Object 



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# File 'lib/rough/generator.rb', line 22

def line(x1, y1, x2, y2, **options)
  o = _o(options)
  _d("line", [Renderer.line(x1, y1, x2, y2, o)], o)
end

#linear_path(points, **options) ⇒ Object 



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# File 'lib/rough/generator.rb', line 67

def linear_path(points, **options)
  o = _o(options)
  _d("linearPath", [Renderer.linear_path(points, false, o)], o)
end

#ops_to_path(drawing, fixed_decimals = nil) ⇒ Object 



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# File 'lib/rough/generator.rb', line 189

def ops_to_path(drawing, fixed_decimals = nil)
  path = ""
  drawing.ops.each do |item|
    data = if fixed_decimals.is_a?(Integer) && fixed_decimals >= 0
      item.data.map { |d| d.round(fixed_decimals) }
    else
      item.data
    end
    case item.op
    when :move
      path += "M#{data[0]} #{data[1]} "
    when :bcurveTo
      path += "C#{data[0]} #{data[1]}, #{data[2]} #{data[3]}, #{data[4]} #{data[5]} "
    when :lineTo
      path += "L#{data[0]} #{data[1]} "
    end
  end
  path.strip
end

#path(d, **options) ⇒ Object 



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# File 'lib/rough/generator.rb', line 148

def path(d, **options)
  o = _o(options)
  paths = []
  return _d("path", paths, o) unless d

  d = (d || "").tr("\n", " ").gsub(/-\s/, "-").gsub(/\s\s/, " ")

  has_fill = o.fill && o.fill != "transparent" && o.fill != "none"
  has_stroke = o.stroke != "none"
  simplified = !!(o.simplification && o.simplification < 1)
  distance = simplified ? (4 - 4 * (o.simplification || 1)) : ((1 + o.roughness) / 2.0)
  sets = PointsOnPath.points_on_path(d, 1, distance)
  shape = Renderer.svg_path(d, o)

  if has_fill
    if o.fill_style == "solid"
      if sets.length == 1
        fill_shape = Renderer.svg_path(d, o.merge(
          disable_multi_stroke: true,
          roughness: (o.roughness != 0) ? (o.roughness + o.fill_shape_roughness_gain) : 0
        ))
        paths << OpSet.new(type: :fillPath, ops: _merged_shape(fill_shape.ops))
      else
        paths << Renderer.solid_fill_polygon(sets, o)
      end
    else
      paths << Renderer.pattern_fill_polygons(sets, o)
    end
  end

  if has_stroke
    if simplified
      sets.each { |set| paths << Renderer.linear_path(set, false, o) }
    else
      paths << shape
    end
  end

  _d("path", paths, o)
end

#polygon(points, **options) ⇒ Object 



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# File 'lib/rough/generator.rb', line 133

def polygon(points, **options)
  o = _o(options)
  paths = []
  outline = Renderer.linear_path(points, true, o)
  if o.fill
    paths << if o.fill_style == "solid"
      Renderer.solid_fill_polygon([points], o)
    else
      Renderer.pattern_fill_polygons([points], o)
    end
  end
  paths << outline if o.stroke != "none"
  _d("polygon", paths, o)
end

#rectangle(x, y, width, height, **options) ⇒ Object 



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# File 'lib/rough/generator.rb', line 27

def rectangle(x, y, width, height, **options)
  o = _o(options)
  paths = []
  outline = Renderer.rectangle(x, y, width, height, o)
  if o.fill
    points = [[x, y], [x + width, y], [x + width, y + height], [x, y + height]]
    paths << if o.fill_style == "solid"
      Renderer.solid_fill_polygon([points], o)
    else
      Renderer.pattern_fill_polygons([points], o)
    end
  end
  paths << outline if o.stroke != "none"
  _d("rectangle", paths, o)
end

#to_paths(drawable) ⇒ Object 



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# File 'lib/rough/generator.rb', line 209

def to_paths(drawable)
  sets = drawable.sets || []
  o = drawable.options || @default_options
  paths = []
  sets.each do |drawing|
    pi = case drawing.type
    when :path
      PathInfo.new(
        d: ops_to_path(drawing),
        stroke: o.stroke,
        stroke_width: o.stroke_width,
        fill: "none"
      )
    when :fillPath
      PathInfo.new(
        d: ops_to_path(drawing),
        stroke: "none",
        stroke_width: 0,
        fill: o.fill || "none"
      )
    when :fillSketch
      _fill_sketch_path(drawing, o)
    end
    paths << pi if pi
  end
  paths
end