Fix the Text2d text anchor's incorrect horizontal alignment (#8019)

Author: ickshonpe

crates/bevy_text/src/text2d.rs

@@ -103,7 +103,7 @@ pub fn extract_text2d_sprite(
         }
 
         let text_glyphs = &text_layout_info.glyphs;
-        let text_anchor = anchor.as_vec() * Vec2::new(1., -1.) - 0.5;
+        let text_anchor = -(anchor.as_vec() + 0.5);
         let alignment_offset = text_layout_info.size * text_anchor;
         let mut color = Color::WHITE;
         let mut current_section = usize::MAX;

examples/2d/text2d.rs

@@ -7,6 +7,7 @@
 
 use bevy::{
     prelude::*,
+    sprite::Anchor,
     text::{BreakLineOn, Text2dBounds},
 };
 
@@ -133,6 +134,29 @@ fn setup(mut commands: Commands, asset_server: Res<AssetServer>) {
                 ..default()
             });
         });
+
+    for (text_anchor, color) in [
+        (Anchor::TopLeft, Color::RED),
+        (Anchor::TopRight, Color::GREEN),
+        (Anchor::BottomRight, Color::BLUE),
+        (Anchor::BottomLeft, Color::YELLOW),
+    ] {
+        commands.spawn(Text2dBundle {
+            text: Text {
+                sections: vec![TextSection::new(
+                    format!(" Anchor::{text_anchor:?} "),
+                    TextStyle {
+                        color,
+                        ..slightly_smaller_text_style.clone()
+                    },
+                )],
+                ..Default::default()
+            },
+            transform: Transform::from_translation(250. * Vec3::Y),
+            text_anchor,
+            ..default()
+        });
+    }
 }
 
 fn animate_translation(