Class: DYI::Drawing::ColumnBrush

Inherits:
Brush show all
Defined in:
lib/dyi/drawing/pen_3d.rb

Overview

Since:

  • 0.0.0

Constant Summary

Constants inherited from Brush

Brush::ALIAS_ATTRIBUTES

Constants inherited from PenBase

PenBase::DROP_SHADOW_OPTIONS

Instance Attribute Summary

Attributes inherited from Brush

#color, #rule

Attributes inherited from PenBase

#display, #drop_shadow, #fill, #fill_opacity, #fill_rule, #opacity, #stroke, #stroke_dasharray, #stroke_dashoffset, #stroke_linecap, #stroke_linejoin, #stroke_miterlimit, #stroke_opacity, #stroke_width, #visibility

Instance Method Summary collapse

Methods inherited from Brush

method_missing

Methods inherited from PenBase

#draw_closed_path, #draw_image, #draw_line, #draw_line_on_direction, #draw_path, #draw_polygon, #draw_polyline, #draw_rectangle, #draw_rectangle_on_corner, #draw_sector, #draw_text, #import_image

Constructor Details

#initialize(options = {}) ⇒ ColumnBrush

Returns a new instance of ColumnBrush.

Since:

  • 1.1.0



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# File 'lib/dyi/drawing/pen_3d.rb', line 186

def initialize(options={})
  self.flank_color = options.delete(:flank_color)
  self.dy = options.delete(:dy)
  super
end

Instance Method Details

#draw_circle(canvas, center_point, radius, options = {}) ⇒ Object

Draw a cylinder by specifying the upper surface, which is a circle

Since:

  • 1.1.0



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# File 'lib/dyi/drawing/pen_3d.rb', line 214

def draw_circle(canvas, center_point, radius, options={})
  radius = Length.new(radius).abs
  center_point = Coordinate.new(center_point)
  group_options = {}
  parts_options = merge_option(options)
  (flank_painting = @painting.dup).fill = flank_color
  flank_options = parts_options.merge(:painting => flank_painting)
  [:anchor_href, :anchor_target, :css_class, :id].each do |key|
    group_options[key] = parts_options.delete(key)
  end
  shape = Shape::ShapeGroup.draw_on(canvas, group_options)
  super(shape, center_point + [0, dy], radius, parts_options)
  draw_closed_path(shape, center_point - [radius, 0], flank_options) {|path|
    path.rarc_to([radius * 2, 0], radius, radius)
    path.rline_to([0, dy])
    path.rarc_to([- radius * 2, 0], radius, radius, 0, false, false)
  }
  draw_closed_path(shape, center_point - [radius, 0], flank_options) {|path|
    path.rarc_to([radius * 2, 0], radius, radius, 0, false, false)
    path.rline_to([0, dy])
    path.rarc_to([- radius * 2, 0], radius, radius)
  }
  super(shape, center_point, radius, parts_options)
  shape
end

#draw_ellipse(canvas, center_point, radius_x, radius_y, options = {}) ⇒ Object

Draw a cylinder by specifying the upper surface, which is a ellipse

Since:

  • 1.1.0



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# File 'lib/dyi/drawing/pen_3d.rb', line 242

def draw_ellipse(canvas, center_point, radius_x, radius_y, options={})
  radius_x, radius_y = Length.new(radius_x).abs, Length.new(radius_y).abs
  center_point = Coordinate.new(center_point)
  group_options = {}
  parts_options = merge_option(options)
  (flank_painting = @painting.dup).fill = flank_color
  flank_options = parts_options.merge(:painting => flank_painting)
  [:anchor_href, :anchor_target, :css_class, :id].each do |key|
    group_options[key] = parts_options.delete(key)
  end
  shape = Shape::ShapeGroup.draw_on(canvas, group_options)
  super(shape, center_point + [0, dy], radius_x, radius_y, parts_options)
  draw_closed_path(shape, center_point - [radius_x, 0], flank_options) {|path|
    path.rarc_to([radius_x * 2, 0], radius_x, radius_y)
    path.rline_to([0, dy])
    path.rarc_to([- radius_x * 2, 0], radius_x, radius_y, 0, false, false)
  }
  draw_closed_path(shape, center_point - [radius_x, 0], flank_options) {|path|
    path.rarc_to([radius_x * 2, 0], radius_x, radius_y, 0, false, false)
    path.rline_to([0, dy])
    path.rarc_to([- radius_x * 2, 0], radius_x, radius_y)
  }
  super(shape, center_point, radius_x, radius_y, parts_options)
  shape
end

#draw_toroid(canvas, center_point, radius_x, radius_y, inner_radius, options = {}) ⇒ Object

Since:

  • 1.1.0



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# File 'lib/dyi/drawing/pen_3d.rb', line 269

def draw_toroid(canvas, center_point, radius_x, radius_y, inner_radius, options={})
  if inner_radius >= 1 || 0 > inner_radius
    raise ArgumentError, "inner_radius option is out of range: #{inner_radius}"
  end
  radius_x, radius_y = Length.new(radius_x).abs, Length.new(radius_y).abs
  center_point = Coordinate.new(center_point)
  arc_right_pt = center_point + [radius_x, 0]
  arc_left_pt = center_point - [radius_x , 0]
  inner_radius_x = radius_x * inner_radius
  inner_radius_y = radius_y * inner_radius
  inner_arc_right_pt = center_point + [inner_radius_x , 0]
  inner_arc_left_pt = center_point - [inner_radius_x, 0]
  group_options = {}
  parts_options = merge_option(options)
  (flank_painting = @painting.dup).fill = flank_color
  flank_options = parts_options.merge(:painting => flank_painting)
  [:anchor_href, :anchor_target, :css_class, :id].each do |key|
    group_options[key] = parts_options.delete(key)
  end
  shape = Shape::ShapeGroup.draw_on(canvas, group_options)

  super(shape, center_point + [0, dy], radius_x, radius_y, inner_radius, parts_options)
  draw_sector_back_flank(shape, center_point,
                         radius_x, radius_y,
                         arc_left_pt, arc_right_pt,
                         180, 180, flank_options)
  draw_sector_back_flank(shape, center_point,
                         inner_radius_x, inner_radius_y,
                         inner_arc_left_pt, inner_arc_right_pt,
                         180, 180, flank_options)
  draw_sector_front_flank(shape, center_point,
                          inner_radius_x, inner_radius_y,
                          inner_arc_right_pt, inner_arc_left_pt,
                          0, 180, flank_options)
  draw_sector_front_flank(shape, center_point,
                          radius_x, radius_y,
                          arc_right_pt, arc_left_pt,
                          0, 180, flank_options)
  super(shape, center_point, radius_x, radius_y, inner_radius, parts_options)
end

#dy ⇒ Object

Since:

  • 0.0.0



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# File 'lib/dyi/drawing/pen_3d.rb', line 192

def dy
  @dy || Length.new(16)
end

#dy=(value) ⇒ Object

Since:

  • 0.0.0



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# File 'lib/dyi/drawing/pen_3d.rb', line 196

def dy=(value)
  @dy = Length.new_or_nil(value)
end

#flank_color ⇒ Object

Returns a flank color

Since:

  • 1.1.0



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# File 'lib/dyi/drawing/pen_3d.rb', line 202

def flank_color
  @flank_color || color.merge('black', 0.2)
end

#flank_color=(color) ⇒ Object

Set a flank color

Since:

  • 1.1.0



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# File 'lib/dyi/drawing/pen_3d.rb', line 208

def flank_color=(color)
  @flank_color = Color.new_or_nil(color)
end