| use glam::DVec2; |
|
|
| #[derive(Clone, Debug)] |
| pub enum AbsolutePathCommand { |
| H(f64), |
| V(f64), |
| M(DVec2), |
| L(DVec2), |
| C(DVec2, DVec2, DVec2), |
| S(DVec2, DVec2), |
| Q(DVec2, DVec2), |
| T(DVec2), |
| A(f64, f64, f64, bool, bool, DVec2), |
| Z, |
| } |
|
|
| #[derive(Clone, Debug)] |
| pub enum RelativePathCommand { |
| H(f64), |
| V(f64), |
| M(f64, f64), |
| L(f64, f64), |
| C(f64, f64, f64, f64, f64, f64), |
| S(f64, f64, f64, f64), |
| Q(f64, f64, f64, f64), |
| T(f64, f64), |
| A(f64, f64, f64, bool, bool, f64, f64), |
| } |
|
|
| #[derive(Clone, Debug)] |
| pub enum PathCommand { |
| Absolute(AbsolutePathCommand), |
| Relative(RelativePathCommand), |
| } |
|
|
| pub fn to_absolute_commands<I>(commands: I) -> impl Iterator<Item = AbsolutePathCommand> |
| where |
| I: IntoIterator<Item = PathCommand>, |
| { |
| let mut last_point = DVec2::ZERO; |
| let mut first_point = last_point; |
|
|
| commands.into_iter().flat_map(move |cmd| match cmd { |
| PathCommand::Absolute(abs_cmd) => { |
| match abs_cmd { |
| AbsolutePathCommand::H(x) => { |
| last_point.x = x; |
| } |
| AbsolutePathCommand::V(y) => { |
| last_point.y = y; |
| } |
| AbsolutePathCommand::M(point) => { |
| last_point = point; |
| first_point = point; |
| } |
| AbsolutePathCommand::L(point) => { |
| last_point = point; |
| } |
| AbsolutePathCommand::C(_, _, end) => { |
| last_point = end; |
| } |
| AbsolutePathCommand::S(_, end) => { |
| last_point = end; |
| } |
| AbsolutePathCommand::Q(_, end) => { |
| last_point = end; |
| } |
| AbsolutePathCommand::T(end) => { |
| last_point = end; |
| } |
| AbsolutePathCommand::A(_, _, _, _, _, end) => { |
| last_point = end; |
| } |
| AbsolutePathCommand::Z => { |
| last_point = first_point; |
| } |
| } |
| vec![abs_cmd] |
| } |
| PathCommand::Relative(rel_cmd) => match rel_cmd { |
| RelativePathCommand::H(dx) => { |
| last_point.x += dx; |
| vec![AbsolutePathCommand::L(last_point)] |
| } |
| RelativePathCommand::V(dy) => { |
| last_point.y += dy; |
| vec![AbsolutePathCommand::L(last_point)] |
| } |
| RelativePathCommand::M(dx, dy) => { |
| last_point += DVec2::new(dx, dy); |
| first_point = last_point; |
| vec![AbsolutePathCommand::M(last_point)] |
| } |
| RelativePathCommand::L(dx, dy) => { |
| last_point += DVec2::new(dx, dy); |
| vec![AbsolutePathCommand::L(last_point)] |
| } |
| RelativePathCommand::C(dx1, dy1, dx2, dy2, dx, dy) => { |
| let c1 = last_point + DVec2::new(dx1, dy1); |
| let c2 = last_point + DVec2::new(dx2, dy2); |
| last_point += DVec2::new(dx, dy); |
| vec![AbsolutePathCommand::C(c1, c2, last_point)] |
| } |
| RelativePathCommand::S(dx2, dy2, dx, dy) => { |
| let c2 = last_point + DVec2::new(dx2, dy2); |
| last_point += DVec2::new(dx, dy); |
| vec![AbsolutePathCommand::S(c2, last_point)] |
| } |
| RelativePathCommand::Q(dx1, dy1, dx, dy) => { |
| let control = last_point + DVec2::new(dx1, dy1); |
| last_point += DVec2::new(dx, dy); |
| vec![AbsolutePathCommand::Q(control, last_point)] |
| } |
| RelativePathCommand::T(dx, dy) => { |
| last_point += DVec2::new(dx, dy); |
| vec![AbsolutePathCommand::T(last_point)] |
| } |
| RelativePathCommand::A(rx, ry, x_axis_rotation, large_arc_flag, sweep_flag, dx, dy) => { |
| last_point += DVec2::new(dx, dy); |
| vec![AbsolutePathCommand::A(rx, ry, x_axis_rotation, large_arc_flag, sweep_flag, last_point)] |
| } |
| }, |
| }) |
| } |
|
|
