class HexaPDF::Content::Processor::GlyphBox

rectangle in all cases but it is always a parallelogram.
Since the glyph may have been transformed by an affine matrix, the bounding box may not be a
Represents an (immutable) glyph box with positioning information.

def initialize(code_point, string, llx, lly, lrx, lry, ulx, uly)

coordinate [ulx, uly].
coordinate [llx, lly], the lower right coordinate [lrx, lry], and the upper left
Creates a new glyph box for the given code point/Unicode value pair with the lower left 
def initialize(code_point, string, llx, lly, lrx, lry, ulx, uly)
  @code_point = code_point
  @string = string.freeze
  @llx = llx
  @lly = lly
  @lrx = lrx
  @lry = lry
  @ulx = ulx
  @uly = uly
  freeze
end

def lower_left

Returns the lower left coordinate

glyph_box.lower_left -> [llx, lly]
:call-seq: 
def lower_left
  [@llx, @lly]
end

def lower_right

Returns the lower right coordinate

glyph_box.lower_right -> [lrx, lry]
:call-seq: 
def lower_right
  [@lrx, @lry]
end

def points

left corner and going counterclockwise.
Returns the four corners of the box as an array of coordinates, starting with the lower

glyph_box.points -> [llx, lly, lrx, lry, urx, ury, ulx, uly]
:call-seq: 
def points
  [@llx, @lly, @lrx, @lry, @ulx + (@lrx - @llx), @uly + (@lry - @lly), @ulx, @uly]
end

def upper_left

Returns the upper left coordinate

glyph_box.upper_left -> [ulx, uly]
:call-seq: 
def upper_left
  [@ulx, @uly]
end

def upper_right

the parallelogram.
Returns the upper right coordinate which is computed by using the other three points of

glyph_box.upper_right -> [urx, ury]
:call-seq: 
def upper_right
  [@ulx + (@lrx - @llx), @uly + (@lry - @lly)]
end