Fix soundness of all app borrows.

examples/draw/draw.rs

@@ -1,25 +1,45 @@
 use nannou::prelude::*;
-use std::any::Any;
 
 fn main() {
     nannou::sketch(view).run()
 }
 
 fn view(app: &App) {
+    // Begin drawing
     let draw = app.draw();
-    draw.background().color(WHITE);
 
+    // Clear the background to blue.
+    draw.background().color(CORNFLOWER_BLUE);
+
+    // Draw a purple triangle in the top left half of the window.
     let win = app.window_rect();
-    let num_bars = 20;
-    let bar_width = win.w() / num_bars as f32;
-
-    for i in 0..num_bars {
-        let x = map_range(i, 0, num_bars, win.left(), win.right());
-        let y = map_range(i, 0, num_bars, win.top(), win.bottom());
-
-        draw.rect()
-            .x_y(x, y)
-            .w_h(bar_width, win.h() / num_bars as f32)
-            .color(BLACK);
-    }
+    draw.tri()
+        .points(win.bottom_left(), win.top_left(), win.top_right())
+        .color(VIOLET);
+
+    // Draw an ellipse to follow the mouse().
+    let t = app.time().elapsed_seconds();
+    draw.ellipse()
+        .x_y(app.mouse().x * t.cos(), app.mouse().y)
+        .radius(win.w() * 0.125 * t.sin())
+        .color(RED);
+
+    // Draw a line!
+    draw.line()
+        .weight(10.0 + (t.sin() * 0.5 + 0.5) * 90.0)
+        .caps_round()
+        .color(PALE_GOLDENROD)
+        .points(win.top_left() * t.sin(), win.bottom_right() * t.cos());
+
+    // Draw a quad that follows the inverse of the ellipse.
+    draw.quad()
+        .x_y(-app.mouse().x, app.mouse().y)
+        .color(DARK_GREEN)
+        .rotate(t);
+
+    // Draw a rect that follows a different inverse of the ellipse.
+    draw.rect()
+        .x_y(app.mouse().y, app.mouse().x)
+        .w(app.mouse().x * 0.25)
+        .hsv(t, 1.0, 1.0);
 }

examples/draw/draw_texture_sampler.rs

@@ -22,7 +22,7 @@ fn model(app: &App) -> Model {
 }
 
 fn update(app: &App, model: &mut Model) {
-    let mut images = app.images_mut();
+    let mut images = app.assets_mut::<Image>();
     let Some(image) = images.get_mut(&model.texture) else {
         return;
     };

generative_design/image/p_4_1_1_01.rs

@@ -115,7 +115,7 @@ fn crop_tiles(app: &App, model: &mut Model, win: geom::Rect) {
                 win.bottom() + (model.tile_height / 2.0),
             );
 
-            let images = app.images();
+            let images = app.assets::<Image>();
             let image = images.get(&model.texture).unwrap();
             let image = image.clone().try_into_dynamic().unwrap();
             let (w, h) = image.dimensions();

generative_design/image/p_4_1_2_01.rs

@@ -54,7 +54,7 @@ fn model(app: &App) -> Model {
 
 // Draw the state of your `Model` into the given `Frame` here.
 fn view(app: &App, model: &Model) {
-    let images = app.images();
+    let images = app.assets::<Image>();
     let Some(texture) = images.get(&model.texture) else {
         return;
     };

generative_design/image/p_4_1_2_02.rs

@@ -56,7 +56,7 @@ fn model(app: &App) -> Model {
 // Draw the state of your `Model` into the given `Frame` here.
 fn view(app: &App, model: &Model) {
     let draw = app.draw();
-    let images = app.images();
+    let images = app.assets::<Image>();
     let Some(texture) = images.get(&model.texture) else {
         return;
     };

generative_design/image/p_4_3_1_02.rs

@@ -126,7 +126,7 @@ fn view(app: &App, model: &Model) {
     let draw = app.draw();
     let win = app.window_rect();
 
-    let images = app.images();
+    let images = app.assets::<Image>();
     let image = images.get(&model.image).unwrap();
     let image = image.clone().try_into_dynamic().unwrap();
     let (w, h) = image.dimensions();

generative_design/image/p_4_3_2_01.rs

@@ -86,7 +86,7 @@ fn view(app: &App, model: &Model) {
     let mut y = win.top();
     let mut counter = 0;
 
-    let images = app.images();
+    let images = app.assets::<Image>();
     let image = images.get(&model.image).unwrap();
     let image = image.clone().try_into_dynamic().unwrap();
     let (w, h) = image.dimensions();

generative_design/random_and_noise/m_1_3_02.rs

@@ -69,7 +69,7 @@ fn view(app: &App, model: &Model) {
         .into();
 
     let image = Image::from_dynamic(image, true, default());
-    let mut images = app.images_mut();
+    let mut images = app.assets_mut::<Image>();
     let image = images.add(image);
 
     let draw = app.draw();