Fixed filled circle, partially addressed issue #366

Author: 38

plotters-backend/src/rasterizer/circle.rs

@@ -322,8 +322,8 @@ pub fn draw_circle<B: DrawingBackend, S: BackendStyle>(
 
         if fill {
             check_result!(b.draw_line((left, y), (right, y), &style.color()));
-            check_result!(b.draw_line((x, top), (x, up), &style.color()));
-            check_result!(b.draw_line((x, down), (x, bottom), &style.color()));
+            check_result!(b.draw_line((x, top), (x, up - 1), &style.color()));
+            check_result!(b.draw_line((x, down + 1), (x, bottom), &style.color()));
         } else {
             check_result!(b.draw_pixel((left, y), style.color().mix(1.0 - v)));
             check_result!(b.draw_pixel((right, y), style.color().mix(1.0 - v)));

plotters-bitmap/src/bitmap.rs

@@ -228,7 +228,7 @@ impl<'a, P: PixelFormat> DrawingBackend for BitMapBackend<'a, P> {
         point: BackendCoord,
         color: BackendColor,
     ) -> Result<(), DrawingErrorKind<BitMapBackendError>> {
-        if point.0 < 0 || point.1 < 0 {
+        if point.0 < 0 || point.1 < 0 || point.0 as u32 >= self.size.0 || point.1 as u32 >= self.size.1 {
             return Ok(());
         }