Fix example and format code

Author: AaronErhardt

plotters-backend/src/rasterizer/mod.rs

@@ -10,7 +10,7 @@
 // the question mark operator has a huge performance impact due to LLVM unable to handle it.
 // So the question is if this trick is still useful, or LLVM is smart enough to handle it since
 // then.
-// 
+//
 // --
 // Original comment:
 //

plotters/examples/pie.rs

@@ -12,7 +12,7 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
     let radius = 300.0;
     let sizes = vec![66.0, 33.0];
     let _rgba = RGBAColor(0, 50, 255, 1.0);
-    let colors = vec![RGBColor(0, 50, 255), CYAN];
+    let colors = vec![RGBColor(0, 50, 255).to_rgba(), CYAN.to_rgba()];
     let labels = vec!["Pizza", "Pacman"];
 
     let mut pie = Pie::new(&center, &radius, &sizes, &colors, &labels);

plotters/src/chart/context/cartesian2d/draw_impl.rs

@@ -119,10 +119,7 @@ impl<'a, DB: DrawingBackend, X: Ranged, Y: Ranged> ChartContext<'a, DB, Cartesia
                 y1 = axis_range.end;
             }
 
-            area.draw(&PathElement::new(
-                vec![(x0, y0), (x1, y1)],
-                *axis_style,
-            ))?;
+            area.draw(&PathElement::new(vec![(x0, y0), (x1, y1)], *axis_style))?;
         }
 
         Ok(axis_range)

plotters/src/chart/series.rs

@@ -250,9 +250,7 @@ impl<'a, 'b, DB: DrawingBackend + 'a, CT: CoordTranslate> SeriesLabelStyle<'a, '
                 continue;
             }
 
-            funcs.push(
-                draw_func.unwrap_or(&|p: BackendCoord| EmptyElement::at(p).into_dyn()),
-            );
+            funcs.push(draw_func.unwrap_or(&|p: BackendCoord| EmptyElement::at(p).into_dyn()));
             label_element.push_line(label_text);
         }
 

plotters/src/drawing/area.rs

@@ -87,7 +87,7 @@ impl Rect {
             .map(|(a, b)| (*a, *b))
             .collect();
 
-        // Justify: this is actually needed. Because we need to return a iterator that have 
+        // Justify: this is actually needed. Because we need to return a iterator that have
         // static life time, thus we need to copy the value to a buffer and then turn the buffer
         // into a iterator.
         #[allow(clippy::needless_collect)]
@@ -97,14 +97,12 @@ impl Rect {
             .map(|(a, b)| (*a, *b))
             .collect();
 
-        ysegs
-            .into_iter()
-            .flat_map(move |(y0, y1)| {
-                xsegs
-                    .clone()
-                    .into_iter()
-                    .map(move |(x0, x1)| Self { x0, y0, x1, y1 })
-            })
+        ysegs.into_iter().flat_map(move |(y0, y1)| {
+            xsegs
+                .clone()
+                .into_iter()
+                .map(move |(x0, x1)| Self { x0, y0, x1, y1 })
+        })
     }
 
     /// Make the coordinate in the range of the rectangle

plotters/src/element/pie.rs

@@ -109,18 +109,14 @@ impl<'a, DB: DrawingBackend, Label: Display> Drawable<DB> for Pie<'a, (i32, i32)
         let radian_increment = PI / 180.0 / self.radius.sqrt() * 2.0;
         let mut perc_labels = Vec::new();
         for (index, slice) in self.sizes.iter().enumerate() {
-            let slice_style =
-                self.colors
-                    .get(index)
-                    .ok_or_else(|| DrawingErrorKind::FontError(Box::new(
-                        PieError::LengthMismatch,
-                    )))?;
+            let slice_style = self
+                .colors
+                .get(index)
+                .ok_or_else(|| DrawingErrorKind::FontError(Box::new(PieError::LengthMismatch)))?;
             let label = self
                 .labels
                 .get(index)
-                .ok_or_else(|| DrawingErrorKind::FontError(Box::new(
-                    PieError::LengthMismatch,
-                )))?;
+                .ok_or_else(|| DrawingErrorKind::FontError(Box::new(PieError::LengthMismatch)))?;
             // start building wedge line against the previous edge
             let mut points = vec![*self.center];
             let ratio = slice / self.total;

plotters/src/series/line_series.rs

@@ -45,8 +45,7 @@ impl<DB: DrawingBackend, Coord: Clone + 'static> Iterator for LineSeries<DB, Coo
                 let idx = self.point_idx;
                 self.point_idx += 1;
                 return Some(
-                    Circle::new(self.data[idx].clone(), self.point_size, self.style)
-                        .into_dyn(),
+                    Circle::new(self.data[idx].clone(), self.point_size, self.style).into_dyn(),
                 );
             }
             let mut data = vec![];