truchet tiling variations

Author: monkstone

basics/image/truchet_tiling.rb

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+require 'picrate'
+
+# After a sketch by Jim Bumgardner
+# http://joyofprocessing.com/blog/tag/tilings/page/2/
+# Here we create an array of offscreen images
+# Create a grid using the ruby-processing :grid method
+# Then randomly render tile images from the array
+class TruchetTiles < Processing::App
+  DIM = 24
+  TYPE = %i[corner alt_corner alt_oval oval alt_line line].freeze
+  attr_reader :tiles, :images
+
+  def make_image(dim, alternate = :line)
+    create_graphics(dim, dim, P2D).tap do |g|
+      g.smooth(4)
+      g.begin_draw
+      g.background(255)
+      g.stroke(0)
+      g.stroke_weight(4)
+      g.no_fill
+      g.ellipse_mode(RADIUS)
+      case alternate
+      when :corner
+        g.line(dim / 2, 0, dim / 2, dim / 2)
+        g.line(0, dim / 2, dim / 2, dim / 2)
+        g.line(dim / 2, dim, dim, dim / 2)
+      when :alt_corner
+        g.line(dim / 2, dim, dim / 2, dim / 2)
+        g.line(dim, dim / 2, dim / 2, dim / 2)
+        g.line(0, dim / 2, dim / 2, 0)
+      when :line
+        g.line(dim / 2, 0, dim, dim / 2)
+        g.line(0, dim / 2, dim / 2, dim)
+      when :alt_line
+        g.line(0, dim / 2, dim / 2, 0)
+        g.line(dim / 2, dim, dim, dim / 2)
+      when :alt_oval
+        g.ellipse(0, dim, dim / 2, dim / 2)
+        g.ellipse(dim, 0, dim / 2, dim / 2)
+      when :oval
+        g.ellipse(0, 0, dim / 2, dim / 2)
+        g.ellipse(dim, dim, dim / 2, dim / 2)
+      end
+      g.end_draw
+    end
+  end
+
+  def setup
+    sketch_title 'Mixed Truchet Tiling'
+    @images = TYPE.map { |type| make_image(DIM, type) }
+    @tiles = []
+    grid(width, height, DIM, DIM) do |posx, posy|
+      tiles << Tile.new(Vec2D.new(posx, posy))
+    end
+    no_loop
+  end
+
+  def draw
+    background(255)
+    tiles.each(&:render)
+  end
+
+  def settings
+    size(576, 576, P2D)
+    smooth(4)
+  end
+end
+
+TruchetTiles.new
+
+# encapsulate Tile as a class
+class Tile
+  include Processing::Proxy
+  attr_reader :vec, :img
+
+  def initialize(vec)
+    @vec = vec
+    @img = images.sample
+  end
+
+  def render
+    image(img, vec.x, vec.y, img.width, img.height)
+  end
+end