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label all points by the magic of macros

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This commit is contained in:
Dustin Carlino 2018-06-23 15:23:17 -07:00
parent 3f1b867809
commit 8530622beb
1 changed files with 38 additions and 20 deletions
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58
editor/src/experimental.rs
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@ -18,6 +18,7 @@ const BLUE: Color = [0.0, 0.0, 1.0, 0.8];
pub struct UI {
canvas: Canvas,
p3_offset: (f64, f64),
show_labels: bool,
}
impl UI {
@ -25,6 +26,7 @@ impl UI {
UI {
canvas: Canvas::new(),
p3_offset: (200.0, 150.0),
show_labels: true,
}
}
}
@ -51,6 +53,9 @@ impl gui::GUI for UI {
if input.unimportant_key_pressed(Key::L, "right") {
self.p3_offset.0 += speed;
}
if input.unimportant_key_pressed(Key::P, "toggle labels") {
self.show_labels = !self.show_labels;
}
self.canvas.handle_event(input.use_event_directly());
@ -61,6 +66,22 @@ impl gui::GUI for UI {
graphics::clear(WHITE, g.gfx);
g.ctx = self.canvas.get_transformed_context(&g.orig_ctx);
let mut labels: Vec<((f64, f64), String)> = Vec::new();
macro_rules! point {
($pt_name:ident, $value:expr) => {
let $pt_name = $value;
labels.push(($pt_name, stringify!($pt_name).to_string()));
};
}
macro_rules! points {
($pt1_name:ident, $pt2_name:ident, $value:expr) => {
let ($pt1_name, $pt2_name) = $value;
labels.push(($pt1_name, stringify!($pt1_name).to_string()));
labels.push(($pt2_name, stringify!($pt2_name).to_string()));
};
}
let thin = 1.0;
let thick = 5.0;
let shift_away = 50.0;
@ -71,44 +92,41 @@ impl gui::GUI for UI {
// try them out in piston
// TODO figure out polygons too
let p1 = (100.0, 100.0);
let p2 = (110.0, 200.0);
let p3 = (p1.0 + self.p3_offset.0, p1.1 + self.p3_offset.1);
point!(p1, (100.0, 100.0));
point!(p2, (110.0, 200.0));
point!(p3, (p1.0 + self.p3_offset.0, p1.1 + self.p3_offset.1));
line(g, p1, p2, thick, RED);
line(g, p2, p3, thick, RED);
// Two lanes on one side of the road
let (p1_a, p2_a) = shift_line(shift_away, p1, p2);
let (p2_b, p3_b) = shift_line(shift_away, p2, p3);
let p2_c = line_intersection((p1_a, p2_a), (p2_b, p3_b));
points!(p1_a, p2_a, shift_line(shift_away, p1, p2));
points!(p2_b, p3_b, shift_line(shift_away, p2, p3));
point!(p2_c, line_intersection((p1_a, p2_a), (p2_b, p3_b)));
line(g, p1_a, p2_c, thin, GREEN);
line(g, p2_c, p3_b, thin, GREEN);
let (p1_a2, p2_a2) = shift_line(shift_away * 2.0, p1, p2);
let (p2_b2, p3_b2) = shift_line(shift_away * 2.0, p2, p3);
let p2_c2 = line_intersection((p1_a2, p2_a2), (p2_b2, p3_b2));
points!(p1_a2, p2_a2, shift_line(shift_away * 2.0, p1, p2));
points!(p2_b2, p3_b2, shift_line(shift_away * 2.0, p2, p3));
point!(p2_c2, line_intersection((p1_a2, p2_a2), (p2_b2, p3_b2)));
line(g, p1_a2, p2_c2, thin, GREEN);
line(g, p2_c2, p3_b2, thin, GREEN);
// Other side
let (p1_e, p2_e) = shift_line(shift_away, p3, p2);
let (p2_f, p3_f) = shift_line(shift_away, p2, p1);
let p2_g = line_intersection((p1_e, p2_e), (p2_f, p3_f));
points!(p1_e, p2_e, shift_line(shift_away, p3, p2));
points!(p2_f, p3_f, shift_line(shift_away, p2, p1));
point!(p2_g, line_intersection((p1_e, p2_e), (p2_f, p3_f)));
line(g, p1_e, p2_g, thin, BLUE);
line(g, p2_g, p3_f, thin, BLUE);
//self.label(g, p1, &format!("p1 {:?}", p1));
//self.label(g, p2, &format!("p2 {:?}", p2));
self.label(g, p3, &format!("p3 {:?}", p3));
/*self.label(g, p1_a, "p1_a");
self.label(g, p2_a, "p2_a");
self.label(g, p2_b, "p2_b");
self.label(g, p3_b, "p3_b");
self.label(g, p2_c, "p2_c");*/
if self.show_labels {
for pair in &labels {
self.label(g, pair.0, &pair.1);
}
}
println!("");
println!("p1 -> p2 is {}", angle_degrees(p1, p2));