use canvas zoom & a bunch of other changes

src/logic_sim/mod.rs

@@ -1,17 +1,42 @@
-use bevy::color::palettes::basic::RED;
-// pub struct Block
+use crate::camera::Canvas;
+use bevy::color::palettes::basic::{GREEN, RED, WHITE};
 use bevy::prelude::*;
 use bevy::text::TextBounds;
 
+const LABEL_SCALING_FACTOR: f32 = 0.2;
+
 #[derive(Bundle, Debug)]
 pub struct BlockBundle {
-    // name: Text2d,
     block: Block,
     transform: Transform,
     global_transform: GlobalTransform,
     block_visuals: BlockVisuals,
 }
+#[derive(Bundle, Debug)]
+pub struct BlockLabelBundle {
+    text: Text2d,
+    font: TextFont,
+    text_layout: TextLayout,
+    text_bounds: TextBounds,
+    transform: Transform,
+    marker: CanvasText,
+}
 
+impl BlockLabelBundle {
+    fn new(name: impl Into<String>, size: IVec2, font: TextFont) -> Self {
+        Self {
+            text: Text2d(name.into()),
+            font,
+            text_layout: TextLayout::new(JustifyText::Justified, LineBreak::WordOrCharacter),
+            text_bounds: TextBounds::from(size.as_vec2() * (1.0 / LABEL_SCALING_FACTOR)),
+            transform: Transform::from_translation(Vec3::Z),
+            marker: CanvasText,
+        }
+    }
+}
+
+#[derive(Component, Debug)]
+pub struct CanvasText;
 #[derive(Component, Debug)]
 pub struct BlockVisuals {
     size: IVec2,
@@ -32,11 +57,18 @@ pub struct LogicSimPlugin;
 impl Plugin for LogicSimPlugin {
     fn build(&self, app: &mut App) {
         app.add_systems(Startup, setup)
-            .add_systems(Update, render_blocks);
+            .add_systems(Update, (render_blocks, scale_labels));
     }
 }
-fn setup(mut commands: Commands) {
-    let size = IVec2::new(50, 40);
+fn setup(mut commands: Commands, asset_server: Res<AssetServer>) {
+    let font = asset_server.load("fonts/arcane_nine.otf");
+    let text_font = TextFont {
+        font,
+        font_size: 100.0,
+        ..default()
+    };
+
+    let size = IVec2::new(50, 80);
     commands
         .spawn(BlockBundle {
             // name: Text2d("AND".into()),
@@ -45,37 +77,122 @@ fn setup(mut commands: Commands) {
                 color: Color::from(RED),
             },
             block: Block {
-                inputs: vec![Connection {
-                    size: 2,
-                    values: vec![false, true],
-                }],
+                inputs: vec![
+                    Connection {
+                        size: 10,
+                        values: vec![
+                            false, true, false, true, false, true, false, true, false, true,
+                        ],
+                    },
+                    Connection {
+                        size: 9,
+                        values: vec![false, true, false, true, false, true, false, true, false],
+                    },
+                ],
                 outputs: vec![
                     Connection {
                         size: 1,
                         values: vec![false],
                     },
                     Connection {
-                        size: 1,
-                        values: vec![true],
+                        size: 2,
+                        values: vec![true, false],
+                    },
+                    Connection {
+                        size: 3,
+                        values: vec![true, false, true],
+                    },
+                    Connection {
+                        size: 4,
+                        values: vec![true, false, true, false],
                     },
                 ],
             },
             global_transform: GlobalTransform::default(),
             transform: Transform::default(),
         })
-        .with_child((
-            Text2d("AND".into()),
-            TextLayout::new(JustifyText::Center, LineBreak::WordBoundary),
-            TextBounds::from(size.as_vec2()),
-            Transform::from_translation(Vec3::Z),
-        ));
+        .with_child(BlockLabelBundle::new("AND", size, text_font));
 }
-fn render_blocks(blocks: Query<(&BlockVisuals, &GlobalTransform)>, mut gizmos: Gizmos) {
-    for (block_visual, transform) in blocks.iter() {
-        gizmos.rect_2d(
-            transform.translation().xy(),
-            block_visual.size.as_vec2(),
-            block_visual.color,
-        );
+fn render_blocks(
+    blocks: Query<(&BlockVisuals, &Block, &GlobalTransform)>,
+    canvas: Res<Canvas>,
+    mut gizmos: Gizmos,
+) {
+    for (block_visual, block, transform) in blocks.iter() {
+        let size = block_visual.size.as_vec2() * canvas.zoom;
+        let center = transform.translation().xy();
+        let half_size = size / 2.0;
+        let top = center.y + half_size.y;
+        // let bottom = center.y - half_size.y;
+        let left = center.x - half_size.x;
+        let right = center.x + half_size.x;
+        gizmos.rect_2d(center, size, block_visual.color);
+        draw_connections(left, top, size.y, &block.inputs, &mut gizmos, &canvas);
+        draw_connections(right, top, size.y, &block.outputs, &mut gizmos, &canvas);
+    }
+}
+fn draw_connections(
+    x: f32,
+    y: f32,
+    available_height: f32,
+    connections: &[Connection],
+    gizmos: &mut Gizmos,
+    canvas: &Canvas,
+) {
+    let input_count = connections.len();
+    let input_spacing = available_height / (input_count + 1) as f32;
+    // println!("{} -> {}", input_count, input_spacing);
+    for (i, connection) in connections.iter().enumerate() {
+        draw_connection(x, y, gizmos, input_spacing, i, connection, canvas);
+    }
+}
+
+fn draw_connection(
+    x: f32,
+    y: f32,
+    gizmos: &mut Gizmos,
+    input_spacing: f32,
+    i: usize,
+
+    connection: &Connection,
+    canvas: &Canvas,
+) {
+    const CONNECTION_BIT_SIZE: f32 = 10.0;
+    let connection_bit_size = CONNECTION_BIT_SIZE * canvas.zoom;
+    let connection_bit_half_size = connection_bit_size * 0.5;
+    let connection_pos = Vec2::new(x, y - input_spacing * (i + 1) as f32);
+
+    let rows = if connection.size > 8 { 2 } else { 1 };
+    let columns = (connection.size as f32 / rows as f32).ceil() as u32;
+
+    let half_offset = Vec2::new(columns as f32, rows as f32) * (connection_bit_size / 2.0);
+    let one_size = Vec2::new(connection_bit_size, connection_bit_size);
+    let half_one_size = one_size / 2.0;
+
+    'rows: for y in 0..rows {
+        for x in 0..columns {
+            let index = y * columns + x;
+            if index >= connection.size {
+                break 'rows;
+            }
+            let pos = connection_pos
+                + Vec2::new(x as f32, (rows - y - 1) as f32) * connection_bit_size
+                - half_offset
+                + half_one_size;
+            let value = connection.values[index as usize];
+            let color = if value { RED } else { GREEN };
+            gizmos.circle_2d(pos, connection_bit_half_size, color);
+        }
+    }
+    gizmos.rect_2d(
+        connection_pos,
+        Vec2::new(columns as f32, rows as f32) * connection_bit_size,
+        WHITE,
+    );
+}
+
+fn scale_labels(mut labels: Query<(&mut Transform), With<CanvasText>>, canvas: Res<Canvas>) {
+    for (mut transform) in labels.iter_mut() {
+        transform.scale = Vec3::splat(canvas.zoom) * LABEL_SCALING_FACTOR;
     }
 }