Mazes for Programmers/

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Getting Deep into Weaves and Insets

Getting Deep into Weaves and Insets

Learn to display a weave maze on the terminal.

We'll cover the following...

Let’s look at our new to_png method.

The to_png_without_inset method

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  def to_png_without_inset(img, cell, mode, cell_size, wall, x, y)
    x1, y1 = x, y
    x2 = x1 + cell_size
    y2 = y1 + cell_size
    if mode == :backgrounds
      color = background_color_for(cell)
      img.rect(x, y, x2, y2, color, color) if color
    else
      img.line(x1, y1, x2, y1, wall) unless cell.north
      img.line(x1, y1, x1, y2, wall) unless cell.west
      img.line(x2, y1, x2, y2, wall) unless cell.linked?(cell.east)
      img.line(x1, y2, x2, y2, wall) unless cell.linked?(cell.south)
    end
  end

This should be quite familiar—it’s almost the same as what was originally within the each_cell block from our old to_png method. It just computes the northwest and southeast corners of the cell and draws the corresponding walls.

Next, we’ll implement our formulas to find the coordinates of those dashed horizontal and ...