include proton scale

examples/demo.rs

@@ -38,16 +38,16 @@ fn setup(
             transform: Transform::from_xyz(0.0, 0.0, 8.0)
                 .looking_at(Vec3::new(0.0, 0.0, 0.0), Vec3::Y),
             projection: Projection::Perspective(PerspectiveProjection {
-                near: 1e-16,
+                near: 1e-18,
                 ..default()
             }),
             ..default()
         },
         GridCell::<i128>::default(), // All spatial entities need this component
-        FloatingOrigin, // Important: marks this as the entity to use as the floating origin when propagating transforms for rendering.
+        FloatingOrigin,              // Important: marks the floating origin entity for rendering.
         CameraController::default() // Built-in camera controller
-            .with_max_speed(10e35)
-            .with_smoothness(0.95, 0.9)
+            .with_speed_bounds([10e-18, 10e35])
+            .with_smoothness(0.9, 0.8)
             .with_speed(1.0),
     ));
 
@@ -67,7 +67,7 @@ fn setup(
     });
 
     let mut translation = Vec3::ZERO;
-    for i in -12..=27 {
+    for i in -16..=27 {
         let j = 10_f32.powf(i as f32);
         translation.x += j;
         commands.spawn((
@@ -166,19 +166,19 @@ fn ui_text_system(
     let (cell, transform) = origin.single();
     let translation = transform.translation;
 
-    let grid_text = format!("Origin GridCell: {}x, {}y, {}z", cell.x, cell.y, cell.z);
+    let grid_text = format!("GridCell: {}x, {}y, {}z", cell.x, cell.y, cell.z);
 
     let translation_text = format!(
-        "Origin Transform: {:>8.2}x, {:>8.2}y, {:>8.2}z",
+        "Transform: {:>8.2}x, {:>8.2}y, {:>8.2}z",
         translation.x, translation.y, translation.z
     );
 
     let velocity = camera.single().velocity();
     let speed = velocity.0.length() / time.delta_seconds_f64();
     let camera_text = if speed > 3.0e8 {
-        format!("Camera Speed: {:.0e} * speed of light", speed / 3.0e8)
+        format!("Speed: {:.0e} * speed of light", speed / 3.0e8)
     } else {
-        format!("Camera Speed: {:.2e} m/s", speed)
+        format!("Speed: {:.2e} m/s", speed)
     };
 
     let (nearest_text, fact_text) = if let Some(nearest) = camera.single().nearest_object() {
@@ -232,6 +232,7 @@ fn closest<'a>(diameter: f32) -> (f32, &'a str) {
         (1e-10, "diameter of a carbon atom"),
         (4e-11, "diameter of a hydrogen atom"),
         (4e-12, "diameter of an electron"),
+        (1.9e-15, "diameter of a proton"),
     ];
 
     let mut min = items[0];

src/camera.rs

@@ -37,7 +37,7 @@ pub struct CameraController {
     pub smoothness: f64,
     /// Rotational smoothness, from `0.0` to `1.0`.
     pub rotational_smoothness: f64,
-    /// Maximum possible speed.
+    /// Base speed.
     pub speed: f64,
     /// Minimum and maximum speed.
     pub speed_bounds: [f64; 2],
@@ -56,12 +56,6 @@ impl CameraController {
         self
     }
 
-    /// Sets the `max_speed` parameter of the controller, and returns the modified result.
-    pub fn with_max_speed(mut self, max_speed: f64) -> Self {
-        self.speed = max_speed;
-        self
-    }
-
     /// Sets the `slow_near_objects` parameter of the controller, and returns the modified result.
     pub fn with_slowing(mut self, slow_near_objects: bool) -> Self {
         self.slow_near_objects = slow_near_objects;
@@ -73,6 +67,11 @@ impl CameraController {
         self.speed = speed;
         self
     }
+    /// Sets the speed of the controller, and returns the modified result.
+    pub fn with_speed_bounds(mut self, speed_limits: [f64; 2]) -> Self {
+        self.speed_bounds = speed_limits;
+        self
+    }
 
     /// Returns the translational and rotational velocity of the camera.
     pub fn velocity(&self) -> (DVec3, DQuat) {