Class: GeoPattern::PlusSignPattern

Inherits:
BasePattern
  • Object
show all
Defined in:
lib/geo_pattern/pattern/plus_sign_pattern.rb

Constant Summary

Constants inherited from BasePattern

BasePattern::FILL_COLOR_DARK, BasePattern::FILL_COLOR_LIGHT, BasePattern::OPACITY_MAX, BasePattern::OPACITY_MIN, BasePattern::STROKE_COLOR, BasePattern::STROKE_OPACITY

Instance Attribute Summary

Attributes inherited from BasePattern

#hash, #svg

Instance Method Summary collapse

Methods inherited from BasePattern

#fill_color, #hex_val, #map, #opacity

Instance Method Details

#render_to_svg ⇒ Object 



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# File 'lib/geo_pattern/pattern/plus_sign_pattern.rb', line 3

def render_to_svg
  square_size = map(hex_val(0, 1), 0, 15, 10, 25)
  plus_size   = square_size * 3
  plus_shape  = build_plus_shape(square_size)

  svg.set_width(square_size * 12)
  svg.set_height(square_size * 12)

  i = 0
  for y in 0..5
    for x in 0..5
      val     = hex_val(i, 1)
      opacity = opacity(val)
      fill    = fill_color(val)
      dx      = (y % 2 == 0) ? 0 : 1

      styles = {
        "fill"           => fill,
        "stroke"         => STROKE_COLOR,
        "stroke-opacity" => STROKE_OPACITY,
        "style"          => {
          "fill-opacity" => opacity
        }
      }

      svg.group(plus_shape, styles.merge({
        "transform" => "translate(#{x*plus_size - x*square_size + dx*square_size - square_size},#{y*plus_size - y*square_size - plus_size/2})"}))

      # Add an extra column on the right for tiling.
      if (x == 0)
        svg.group(plus_shape, styles.merge({
          "transform" => "translate(#{4*plus_size - x*square_size + dx*square_size - square_size},#{y*plus_size - y*square_size - plus_size/2})"}))
      end

      # Add an extra row on the bottom that matches the first row, for tiling.
      if (y == 0)
        svg.group(plus_shape, styles.merge({
          "transform" => "translate(#{x*plus_size - x*square_size + dx*square_size - square_size},#{4*plus_size - y*square_size - plus_size/2})"}))
      end

      # Add an extra one at top-right and bottom-right, for tiling.
      if (x == 0 && y == 0)
        svg.group(plus_shape, styles.merge({
          "transform" => "translate(#{4*plus_size - x*square_size + dx*square_size - square_size},#{4*plus_size - y*square_size - plus_size/2})"}))
      end
      i += 1
    end
  end
end