Make z-order element can be drawn by series

Author: 38

src/chart/context.rs

@@ -10,7 +10,9 @@ use crate::coord::ranged3d::{ProjectionMatrix, ProjectionMatrixBuilder};
 use crate::coord::{CoordTranslate, ReverseCoordTranslate, Shift};
 
 use crate::drawing::{DrawingArea, DrawingAreaErrorKind};
-use crate::element::{Drawable, EmptyElement, PathElement, PointCollection, Polygon, Text};
+use crate::element::{
+    CoordMapper, Drawable, EmptyElement, PathElement, PointCollection, Polygon, Text,
+};
 use crate::style::text_anchor::{HPos, Pos, VPos};
 use crate::style::{ShapeStyle, TextStyle};
 
@@ -97,13 +99,14 @@ impl<'a, DB: DrawingBackend, CT: CoordTranslate> ChartContext<'a, DB, CT> {
     //       of points reference with the same lifetime.
     //       However, this doesn't work if the coordinate doesn't live longer than the backend,
     //       this is unnecessarily strict
-    pub(super) fn draw_series_impl<E, R, S>(
+    pub(super) fn draw_series_impl<B, E, R, S>(
         &mut self,
         series: S,
     ) -> Result<(), DrawingAreaErrorKind<DB::ErrorType>>
     where
-        for<'b> &'b E: PointCollection<'b, CT::From>,
-        E: Drawable<DB>,
+        B: CoordMapper,
+        for<'b> &'b E: PointCollection<'b, CT::From, B>,
+        E: Drawable<DB, B>,
         R: Borrow<E>,
         S: IntoIterator<Item = R>,
     {
@@ -120,13 +123,14 @@ impl<'a, DB: DrawingBackend, CT: CoordTranslate> ChartContext<'a, DB, CT> {
     }
 
     /// Draw a data series. A data series in Plotters is abstracted as an iterator of elements
-    pub fn draw_series<E, R, S>(
+    pub fn draw_series<B, E, R, S>(
         &mut self,
         series: S,
     ) -> Result<&mut SeriesAnno<'a, DB>, DrawingAreaErrorKind<DB::ErrorType>>
     where
-        for<'b> &'b E: PointCollection<'b, CT::From>,
-        E: Drawable<DB>,
+        B: CoordMapper,
+        for<'b> &'b E: PointCollection<'b, CT::From, B>,
+        E: Drawable<DB, B>,
         R: Borrow<E>,
         S: IntoIterator<Item = R>,
     {