every plot object now has an id which is returned as part of the plot…

…'s response if it was hovered
emilk · Jan 30, 2024 · 97c5783 · 97c5783
1 parent 01597fe
commit 97c5783
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Showing 4 changed files with 172 additions and 20 deletions.
diff --git a/crates/egui_demo_lib/src/demo/plot_demo.rs b/crates/egui_demo_lib/src/demo/plot_demo.rs
@@ -791,8 +791,26 @@ impl InteractionDemo {
         let PlotResponse {
             response,
             inner: (screen_pos, pointer_coordinate, pointer_coordinate_drag_delta, bounds, hovered),
+            hovered_plot_item,
             ..
         } = plot.show(ui, |plot_ui| {
+            plot_ui.line(
+                Line::new(PlotPoints::from_explicit_callback(
+                    move |x| x.sin(),
+                    ..,
+                    100,
+                ))
+                .id(egui::Id::new("sin")),
+            );
+            plot_ui.line(
+                Line::new(PlotPoints::from_explicit_callback(
+                    move |x| x.cos(),
+                    ..,
+                    100,
+                ))
+                .id(egui::Id::new("cos")),
+            );
+
             (
                 plot_ui.screen_from_plot(PlotPoint::new(0.0, 0.0)),
                 plot_ui.pointer_coordinate(),
@@ -823,6 +841,7 @@ impl InteractionDemo {
             pointer_coordinate_drag_delta.x, pointer_coordinate_drag_delta.y
         );
         ui.label(format!("pointer coordinate drag delta: {coordinate_text}"));
+        ui.label(format!("hovered plot item: {hovered_plot_item:?}"));
 
         response
     }