126     center: BackendCoord,  in draw_annulus()
136         center,  in draw_annulus()
144         center,  in draw_annulus()
152         center,  in draw_annulus()
160         center,  in draw_annulus()
174                     (center.0 + h, center.1 + f),  in draw_annulus()
175                     (center.0 + h, center.1 + t),  in draw_annulus()
179                     (center.0 - h, center.1 + f),  in draw_annulus()
180                     (center.0 - h, center.1 + t),  in draw_annulus()
185                     (center.0 + f + 1, center.1 + h),  in draw_annulus()
186                     (center.0 + t - 1, center.1 + h),  in draw_annulus()
190                     (center.0 + f + 1, center.1 - h),  in draw_annulus()
191                     (center.0 + t - 1, center.1 - h),  in draw_annulus()
203         |p, r| draw_sweep_line(b, style, center, (0, 1), p, r)  in draw_annulus()
208         |p, r| draw_sweep_line(b, style, center, (0, -1), p, r)  in draw_annulus()
213         |p, r| draw_sweep_line(b, style, center, (1, 0), p, r)  in draw_annulus()
218         |p, r| draw_sweep_line(b, style, center, (-1, 0), p, r)  in draw_annulus()
230         (center.0 - d_inner, center.1 - d_inner),  in draw_annulus()
231         (center.0 - d_outer, center.1 - d_outer),  in draw_annulus()
235         (center.0 + d_inner, center.1 - d_inner),  in draw_annulus()
236         (center.0 + d_outer, center.1 - d_outer),  in draw_annulus()
240         (center.0 - d_inner, center.1 + d_inner),  in draw_annulus()
241         (center.0 - d_outer, center.1 + d_outer),  in draw_annulus()
245         (center.0 + d_inner, center.1 + d_inner),  in draw_annulus()
246         (center.0 + d_outer, center.1 + d_outer),  in draw_annulus()
251         (center.0 - d_inner, center.1 + d_inner),  in draw_annulus()
252         (center.0 - d_outer_actually, center.1 + d_inner),  in draw_annulus()
256         (center.0 + d_inner, center.1 - d_inner),  in draw_annulus()
257         (center.0 + d_inner, center.1 - d_outer_actually),  in draw_annulus()
261         (center.0 + d_inner, center.1 + d_inner),  in draw_annulus()
262         (center.0 + d_inner, center.1 + d_outer_actually),  in draw_annulus()
266         (center.0 + d_inner, center.1 + d_inner),  in draw_annulus()
267         (center.0 + d_outer_actually, center.1 + d_inner),  in draw_annulus()
276     center: BackendCoord,  in draw_circle()
289             return draw_annulus(b, center, (radius, inner_radius), style);  in draw_circle()
301         range.start() + center.1 - radius as i32,  in draw_circle()
302         range.end() + center.1 - radius as i32,  in draw_circle()
307         let y = center.1 + dy;  in draw_circle()
313         let left = center.0 - lx.floor() as i32;  in draw_circle()
314         let right = center.0 + lx.floor() as i32;  in draw_circle()
318         let x = center.0 + dy;  in draw_circle()
319         let top = center.1 - lx.floor() as i32;  in draw_circle()
320         let bottom = center.1 + lx.floor() as i32;  in draw_circle()