| 1 | fn draw(context: &cairo::Context) -> Result<(), Box<dyn std::error::Error>> { |
| 2 | let (x, y, x1, y1) = (0.1, 0.5, 0.4, 0.9); |
| 3 | let (x2, y2, x3, y3) = (0.6, 0.1, 0.9, 0.5); |
| 4 | context.scale(200., 200.); |
| 5 | context.set_line_width(0.04); |
| 6 | context.move_to(x, y); |
| 7 | context.curve_to(x1, y1, x2, y2, x3, y3); |
| 8 | context.stroke()?; |
| 9 | context.set_source_rgba(1., 0.2, 0.2, 0.6); |
| 10 | context.set_line_width(0.02); |
| 11 | context.move_to(x, y); |
| 12 | context.line_to(x1, y1); |
| 13 | context.move_to(x2, y2); |
| 14 | context.line_to(x3, y3); |
| 15 | context.stroke()?; |
| 16 | Ok(()) |
| 17 | } |
| 18 | |
| 19 | fn draw_box( |
| 20 | context: &cairo::Context, |