remove abs_y* variables from XAxis class

Author: v0dro

lib/rubyplot/artist/axes.rb

@@ -216,7 +216,7 @@ def assign_x_ticks
             Rubyplot::Artist::XTick.new(
               self,
               abs_x: i * inter_ticks_distance + @x_axis.abs_x1,
-              abs_y: @x_axis.abs_y1,
+              abs_y: @origin[1],
               label: tick_label,
               length: 6,
               label_distance: 10

lib/rubyplot/artist/axis/x_axis.rb

@@ -6,9 +6,7 @@ class XAxis < Axis::Base
       def initialize axes
         super
         @abs_x1 = @axes.origin[0]
-        @abs_y1 = @axes.origin[1]
         @abs_x2 = @axes.abs_x + @axes.width - @axes.y_axis_margin
-        @abs_y2 = @axes.origin[1]
         @major_ticks_distance = (@abs_x2 - @abs_x1) / @major_ticks_count
         @length = (@abs_x2 - @abs_x1).abs
         configure_axis_line
@@ -24,7 +22,7 @@ def draw
 
       def configure_axis_line
         @line = Rubyplot::Artist::Line2D.new(
-          self, abs_x1: @abs_x1, abs_y1: @abs_y1, abs_x2: @abs_x2, abs_y2: @abs_y2,
+          self, abs_x1: @abs_x1, abs_y1: @axes.origin[1], abs_x2: @abs_x2, abs_y2: @axes.origin[1],
           stroke_width: @stroke_width)
       end
 

lib/rubyplot/artist/plot/multi_bars.rb

@@ -55,7 +55,7 @@ def configure_x_ticks
             Rubyplot::Artist::XTick.new(
               @axes,
               abs_x: @axes.abs_x + @axes.y_axis_margin + i * @max_slot_width + @max_slot_width / 2,
-              abs_y: @axes.x_axis.abs_y1,
+              abs_y: @axes.origin[1],
               label: label,
               length: 6,
               label_distance: 10
@@ -68,7 +68,7 @@ def set_bar_dims bar_plot, index
           @num_max_slots.times do |i|
             bar_plot.abs_x_left[i] = @axes.abs_x + @axes.y_axis_margin +
                                      i * @max_slot_width + @padding / 2 + index * bar_plot.bar_width
-            bar_plot.abs_y_left[i] = @axes.x_axis.abs_y1 - @axes.x_axis.stroke_width
+            bar_plot.abs_y_left[i] = @axes.origin[1] - @axes.x_axis.stroke_width
           end
         end
       end # class MultiBars

spec/axes_spec.rb

@@ -171,7 +171,7 @@
         FileUtils.mkdir_p @temp_dir
       end
 
-      it "plots a single bubble plot" do
+      it "plots a single bubble plot", focus: true do
         fig = Rubyplot::Figure.new
         axes = fig.add_subplot 0,0
         axes.bubble! do |p|
@@ -532,7 +532,7 @@
             p.label = name
           end
         end
-        
+
         file = "/#{Rubyplot.backend}_wide_multiple_bars.png"
         fig.write(@temp_dir + file)