diff --git a/src/Chart.vala b/src/Chart.vala
index 237a743..9404cd5 100644
--- a/src/Chart.vala
+++ b/src/Chart.vala
@@ -355,18 +355,6 @@ namespace CairoChart {
 			join_calc (false);
 		}
 
-		public virtual double compact_rec_x_pos (Series s, Float128 x, Text text) {
-			var sz = text.get_size(context);
-			return get_scr_x(s, x) - sz.width / 2.0
-			       - sz.width * (x - (s.axis_x.zoom_min + s.axis_x.zoom_max) / 2.0) / (s.axis_x.zoom_max - s.axis_x.zoom_min);
-		}
-
-		public virtual double compact_rec_y_pos (Series s, Float128 y, Text text) {
-			var sz = text.get_size(context);
-			return get_scr_y(s, y) + sz.height / 2.0
-			       + sz.height * (y - (s.axis_y.zoom_min + s.axis_y.zoom_max) / 2.0) / (s.axis_y.zoom_max - s.axis_y.zoom_min);
-		}
-
 		protected virtual void draw_horizontal_axes () {
 			for (var si = series.length - 1, nskip = 0; si >=0; --si)
 				series[si].draw_horizontal_axis (this, si, ref nskip);
diff --git a/src/Cursor.vala b/src/Cursor.vala
index e839d25..90309e6 100644
--- a/src/Cursor.vala
+++ b/src/Cursor.vala
@@ -271,7 +271,7 @@ namespace CairoChart {
 								}
 								break;
 						}
-						var print_x = chart.compact_rec_x_pos (s, x, text_t);
+						var print_x = s.compact_rec_x_pos (x, text_t);
 						chart.context.move_to (print_x, print_y);
 
 						switch (s.axis_x.type) {
@@ -280,7 +280,7 @@ namespace CairoChart {
 							break;
 						case Axis.Type.DATE_TIME:
 							if (s.axis_x.date_format != "") text_t.show(chart.context);
-							print_x = chart.compact_rec_x_pos (s, x, time_text_t);
+							print_x = s.compact_rec_x_pos (x, time_text_t);
 							chart.context.move_to (print_x, print_y - (s.axis_x.date_format == "" ? 0 : sz.height + s.axis_x.font_indent));
 							if (s.axis_x.time_format != "") time_text_t.show(chart.context);
 							break;
@@ -297,7 +297,7 @@ namespace CairoChart {
 						var s = chart.series[chart.zoom_first_show];
 						var y = chart.get_real_y(s, chart.rel2scr_y(c.y));
 						var text_t = new Text(s.axis_y.format.printf((LongDouble)y, s.axis_y.font_style));
-						var print_y = chart.compact_rec_y_pos (s, y, text_t);
+						var print_y = s.compact_rec_y_pos (y, text_t);
 						var print_x = 0.0;
 						switch (s.axis_y.position) {
 						case Axis.Position.LOW:
diff --git a/src/Series.vala b/src/Series.vala
index 91d46c0..b5f0897 100644
--- a/src/Series.vala
+++ b/src/Series.vala
@@ -213,7 +213,7 @@ namespace CairoChart {
 				switch (s.axis_x.position) {
 				case Axis.Position.LOW:
 					var print_y = chart.cur_y_max - s.axis_x.font_indent - (s.axis_x.title.text == "" ? 0 : sz.height + s.axis_x.font_indent);
-					var print_x = chart.compact_rec_x_pos (s, x, text_t);
+					var print_x = s.compact_rec_x_pos (x, text_t);
 					context.move_to (print_x, print_y);
 					switch (s.axis_x.type) {
 					case Axis.Type.NUMBERS:
@@ -222,7 +222,7 @@ namespace CairoChart {
 					case Axis.Type.DATE_TIME:
 						if (s.axis_x.date_format != "") text_t.show(context);
 						var time_text_t = new Text(time_text, s.axis_x.font_style, s.axis_x.color);
-						print_x = chart.compact_rec_x_pos (s, x, time_text_t);
+						print_x = s.compact_rec_x_pos (x, time_text_t);
 						context.move_to (print_x, print_y - (s.axis_x.date_format == "" ? 0 : text_t.get_height(context) + s.axis_x.font_indent));
 						if (s.axis_x.time_format != "") time_text_t.show(context);
 						break;
@@ -240,7 +240,7 @@ namespace CairoChart {
 					break;
 				case Axis.Position.HIGH:
 					var print_y = chart.cur_y_min + max_rec_height + s.axis_x.font_indent + (s.axis_x.title.text == "" ? 0 : sz.height + s.axis_x.font_indent);
-					var print_x = chart.compact_rec_x_pos (s, x, text_t);
+					var print_x = s.compact_rec_x_pos (x, text_t);
 					context.move_to (print_x, print_y);
 
 					switch (s.axis_x.type) {
@@ -250,7 +250,7 @@ namespace CairoChart {
 					case Axis.Type.DATE_TIME:
 						if (s.axis_x.date_format != "") text_t.show(context);
 						var time_text_t = new Text(time_text, s.axis_x.font_style, s.axis_x.color);
-						print_x = chart.compact_rec_x_pos (s, x, time_text_t);
+						print_x = s.compact_rec_x_pos (x, time_text_t);
 						context.move_to (print_x, print_y - (s.axis_x.date_format == "" ? 0 : text_t.get_height(context) + s.axis_x.font_indent));
 						if (s.axis_x.time_format != "") time_text_t.show(context);
 						break;
@@ -362,7 +362,7 @@ namespace CairoChart {
 				case Axis.Position.LOW:
 					context.move_to (chart.cur_x_min + max_rec_width - text_sz.width + s.axis_y.font_indent
 					                 + (s.axis_y.title.text == "" ? 0 : sz.width + s.axis_y.font_indent),
-					                 chart.compact_rec_y_pos (s, y, text_t));
+					                 s.compact_rec_y_pos (y, text_t));
 					text_t.show(context);
 					// 6. Draw grid lines to the s.place.zoom_x_min.
 					var line_style = s.grid.line_style;
@@ -378,7 +378,7 @@ namespace CairoChart {
 				case Axis.Position.HIGH:
 					context.move_to (chart.cur_x_max - text_sz.width - s.axis_y.font_indent
 					                 - (s.axis_y.title.text == "" ? 0 : sz.width + s.axis_y.font_indent),
-					                 chart.compact_rec_y_pos (s, y, text_t));
+					                 s.compact_rec_y_pos (y, text_t));
 					text_t.show(context);
 					// 6. Draw grid lines to the s.place.zoom_x_max.
 					var line_style = s.grid.line_style;
@@ -470,16 +470,16 @@ namespace CairoChart {
 			}
 		}
 
-		public virtual double compact_rec_x_pos (Series s, Float128 x, Text text) {
+		public virtual double compact_rec_x_pos (Float128 x, Text text) {
 			var sz = text.get_size(chart.context);
-			return chart.get_scr_x(s, x) - sz.width / 2.0
-			       - sz.width * (x - (s.axis_x.zoom_min + s.axis_x.zoom_max) / 2.0) / (s.axis_x.zoom_max - s.axis_x.zoom_min);
+			return chart.get_scr_x(this, x) - sz.width / 2.0
+			       - sz.width * (x - (axis_x.zoom_min + axis_x.zoom_max) / 2.0) / (axis_x.zoom_max - axis_x.zoom_min);
 		}
 
-		public virtual double compact_rec_y_pos (Series s, Float128 y, Text text) {
+		public virtual double compact_rec_y_pos (Float128 y, Text text) {
 			var sz = text.get_size(chart.context);
-			return chart.get_scr_y(s, y) + sz.height / 2.0
-			       + sz.height * (y - (s.axis_y.zoom_min + s.axis_y.zoom_max) / 2.0) / (s.axis_y.zoom_max - s.axis_y.zoom_min);
+			return chart.get_scr_y(this, y) + sz.height / 2.0
+			       + sz.height * (y - (axis_y.zoom_min + axis_y.zoom_max) / 2.0) / (axis_y.zoom_max - axis_y.zoom_min);
 		}
 	}
 }