Class: Ranicoma::Design::Geji

Inherits:
Base
  • Object
show all
Defined in:
lib/ranicoma/design/geji.rb

Constant Summary collapse

PROJ_METHODS = 
[]

Instance Attribute Summary collapse

Attributes inherited from Base

#rng

Instance Method Summary collapse

Methods inherited from Base

add_subclass, #fill, inherited, #points_str, #rainbow, #rand, #rand_rotate, #rect_element, #rectpos, #stroke, subclasses

Methods included from Util

#element

Constructor Details

#initialize(rng) ⇒ Geji

Returns a new instance of Geji.



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# File 'lib/ranicoma/design/geji.rb', line 14

def initialize(rng)
  super
  @line_width = 1.0/80
  @projsize = rand(0.1..0.3)
  @center_rc = Rect.new( projsize, projsize, 1-projsize*2, 1-projsize*2 )
end

Instance Attribute Details

#center_rc ⇒ Object (readonly)

Returns the value of attribute center_rc.



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# File 'lib/ranicoma/design/geji.rb', line 27

def center_rc
  @center_rc
end

#line_width ⇒ Object (readonly)

Returns the value of attribute line_width.



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# File 'lib/ranicoma/design/geji.rb', line 25

def line_width
  @line_width
end

#projsize ⇒ Object (readonly)

Returns the value of attribute projsize.



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# File 'lib/ranicoma/design/geji.rb', line 26

def projsize
  @projsize
end

Instance Method Details

#bezier(rc, corners) ⇒ Object 



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# File 'lib/ranicoma/design/geji.rb', line 76

def bezier(rc, corners)
  q = corners.each_cons(2).map{ |(x0,y0),(x1,y1)|
    mx = (x0+x1)/2.0
    my = (y0+y1)/2.0
    "Q #{x0} #{y0} #{mx} #{my} "
  }
  path = <<~PATH
    M #{rc.x} #{rc.bottom}
    #{q.join}
    L #{corners.last.join(" ")}
    L #{rc.x} #{rc.bottom}
  PATH
  element( "path", d:path, **proj_attr )
end

#center_rect ⇒ Object 



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# File 'lib/ranicoma/design/geji.rb', line 35

def center_rect
  gx = center_rc.w * rand(0.05..0.3)
  gy = center_rc.h * rand(0.05..0.3)
  w0 = (center_rc.w-gx*2)*rand(0.6..0.9)
  h0 = (center_rc.h-gy*2)*rand(0.6..0.9)
  w1 = (center_rc.w-gx*2)*rand(0.6..0.9)
  h1 = (center_rc.h-gy*2)*rand(0.6..0.9)
  subrects = if rand(2)==0
    [
      Rect.new( center_rc.x+gx, center_rc.y+gy, w0, h0 ),
      Rect.new( center_rc.right-gx-w1, center_rc.bottom-gy-h1, w1, h1 ),
    ]
  else
    [
      Rect.new( center_rc.right-gx-w0, center_rc.y+gy, w0, h0 ),
      Rect.new( center_rc.x+gx, center_rc.bottom-gy-h1, w1, h1 ),
    ]
  end.shuffle( random:rng )
  if rand(2)==0
    h = [h0, h1].min * rand(0.3..1.1)
    w = [w0, w1].min * rand(0.3..1.1)
    subrects.push( Rect.new( center_rc.cx-w/2, center_rc.cy-h/2, w, h ) )
  end
  cols = eqcolors(subrects.size+1)
  makeattr=->(){
    {
      rx:line_width*3,
      **fill(cols.pop),
      **stroke(:black, line_width)
    }
  }
  ([ center_rc  ]+subrects).map{ |rc|
    element( "rect", **rectpos(rc), **makeattr[] )
  }
end

#create ⇒ Object 



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# File 'lib/ranicoma/design/geji.rb', line 238

def create
  [
    Array.new(4){ |pos|
      projects(pos)
    },
    center_rect
  ].flatten
end

#eqcolors(n) ⇒ Object 



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# File 'lib/ranicoma/design/geji.rb', line 29

def eqcolors(n)
  base=rand(3.0)
  Array.new(n){ |ix|
    rainbow(base+3.0*ix/n)
  }
end

#proj_attr ⇒ Object 



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# File 'lib/ranicoma/design/geji.rb', line 21

def proj_attr
  fill(rainbow(rand(3.0))).merge(stroke(:black, line_width))
end

#projects(pos) ⇒ Object 



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# File 'lib/ranicoma/design/geji.rb', line 216

def projects(pos)
  count = rand(2..5)
  rot = "rotate(#{90*pos},0.5,0.5)"
  proj_rects = center_rc.hsplit(*([1]*count))
  proj_rects.each{ |e|
    e.x += e.w*0.1
    e.w *= 0.8
    e.y=line_width
    e.h = projsize
  }
  pattern = rand(1..2**count-1) | rand(1..2**count-1)
  element("g", transform:rot ){
    Array.new(count){ |ix|
      if pattern[ix]==0
        []
      else
        send PROJ_METHODS.sample(random:rng), proj_rects[ix]
      end
    }.flatten
  }
end

#shorten_rc(rc) ⇒ Object 



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# File 'lib/ranicoma/design/geji.rb', line 71

def shorten_rc(rc)
  d = rand(rc.h/2)
  Rect.new( rc.x, rc.y+d, rc.w, rc.h-d )
end