move frontend

webfront/src/euler.rs

@@ -0,0 +1,72 @@
+use sbp::operators;
+use wasm_bindgen::prelude::*;
+
+#[wasm_bindgen]
+pub struct EulerUniverse(euler::System<operators::Upwind4>);
+
+impl EulerUniverse {
+    pub fn new(x: ndarray::Array2<f32>, y: ndarray::Array2<f32>) -> Self {
+        Self(euler::System::new(x, y, operators::Upwind4))
+    }
+}
+
+#[wasm_bindgen]
+impl EulerUniverse {
+    #[wasm_bindgen(constructor)]
+    pub fn new_with_slice(height: usize, width: usize, x: &[f32], y: &[f32]) -> Self {
+        let x = ndarray::Array2::from_shape_vec((height, width), x.to_vec()).unwrap();
+        let y = ndarray::Array2::from_shape_vec((height, width), y.to_vec()).unwrap();
+        Self(euler::System::new(x, y, operators::Upwind4))
+    }
+
+    pub fn init(&mut self, x0: f32, y0: f32) {
+        self.0.init_with_vortex(x0, y0)
+    }
+
+    pub fn advance(&mut self, dt: f32) {
+        self.0.advance(dt)
+    }
+
+    pub fn advance_upwind(&mut self, dt: f32) {
+        self.0.advance_upwind(dt)
+    }
+
+    pub fn get_rho_ptr(&self) -> *const u8 {
+        self.0.field().rho().as_ptr() as *const u8
+    }
+    pub fn get_rhou_ptr(&self) -> *const u8 {
+        self.0.field().rhou().as_ptr() as *const u8
+    }
+    pub fn get_rhov_ptr(&self) -> *const u8 {
+        self.0.field().rhov().as_ptr() as *const u8
+    }
+    pub fn get_e_ptr(&self) -> *const u8 {
+        self.0.field().e().as_ptr() as *const u8
+    }
+}
+
+#[test]
+fn start_and_advance_euler() {
+    let x = ndarray::Array2::from_shape_fn((20, 20), |(_j, i)| {
+        5.0 * 2.0 * ((i as f32 / (20 - 1) as f32) - 0.5)
+    });
+    let y = ndarray::Array2::from_shape_fn((20, 20), |(j, _i)| {
+        5.0 * 2.0 * ((j as f32 / (20 - 1) as f32) - 0.5)
+    });
+    let mut universe = EulerUniverse::new(x, y);
+    universe.init(-1.0, 0.0);
+    for _ in 0..50 {
+        universe.advance(0.01);
+    }
+}
+
+#[test]
+fn start_and_advance_upwind_euler() {
+    let x = ndarray::Array2::from_shape_fn((20, 10), |(_j, i)| i as f32 / (10 - 1) as f32);
+    let y = ndarray::Array2::from_shape_fn((20, 10), |(j, _i)| j as f32 / (20 - 1) as f32);
+    let mut universe = EulerUniverse::new(x, y);
+    universe.init(0.5, 0.5);
+    for _ in 0..50 {
+        universe.advance_upwind(0.01);
+    }
+}

webfront/src/lib.rs

@@ -0,0 +1,27 @@
+use wasm_bindgen::prelude::*;
+
+mod euler;
+pub use crate::euler::EulerUniverse;
+
+mod maxwell;
+pub use crate::maxwell::MaxwellUniverse;
+
+mod shallow_water;
+pub use crate::shallow_water::ShallowWaterUniverse;
+
+#[cfg(feature = "wee_alloc")]
+#[global_allocator]
+static ALLOC: wee_alloc::WeeAlloc = wee_alloc::WeeAlloc::INIT;
+
+#[wasm_bindgen]
+pub fn set_panic_hook() {
+    console_error_panic_hook::set_once();
+}
+
+#[wasm_bindgen]
+pub fn set_console_logger() {
+    use std::sync::Once;
+    static LOG_INIT: Once = Once::new();
+
+    LOG_INIT.call_once(|| console_log::init_with_level(log::Level::Trace).unwrap());
+}

webfront/src/maxwell.rs

@@ -0,0 +1,39 @@
+use sbp::operators;
+use wasm_bindgen::prelude::*;
+
+#[wasm_bindgen]
+pub struct MaxwellUniverse(maxwell::System<operators::Upwind4>);
+
+#[wasm_bindgen]
+impl MaxwellUniverse {
+    #[wasm_bindgen(constructor)]
+    pub fn new(height: usize, width: usize, x: &[f32], y: &[f32]) -> Self {
+        let x = ndarray::Array2::from_shape_vec((height, width), x.to_vec()).unwrap();
+        let y = ndarray::Array2::from_shape_vec((height, width), y.to_vec()).unwrap();
+        Self(maxwell::System::new(x, y, operators::Upwind4))
+    }
+
+    pub fn init(&mut self, x0: f32, y0: f32) {
+        self.0.set_gaussian(x0, y0);
+    }
+
+    pub fn advance(&mut self, dt: f32) {
+        self.0.advance(dt)
+    }
+
+    pub fn advance_upwind(&mut self, dt: f32) {
+        self.0.advance_upwind(dt)
+    }
+
+    pub fn get_ex_ptr(&self) -> *const u8 {
+        self.0.field().ex().as_ptr() as *const u8
+    }
+
+    pub fn get_ey_ptr(&self) -> *const u8 {
+        self.0.field().ey().as_ptr() as *const u8
+    }
+
+    pub fn get_hz_ptr(&self) -> *const u8 {
+        self.0.field().hz().as_ptr() as *const u8
+    }
+}

webfront/src/shallow_water.rs

@@ -0,0 +1,55 @@
+use wasm_bindgen::prelude::*;
+
+#[wasm_bindgen]
+pub struct ShallowWaterUniverse(shallow_water::System);
+
+#[wasm_bindgen]
+impl ShallowWaterUniverse {
+    #[wasm_bindgen(constructor)]
+    pub fn new(height: usize, width: usize) -> Self {
+        let x = (-0.5, 0.5, width);
+        let y = (-0.5, 0.5, height);
+        Self(shallow_water::System::new(x, y))
+    }
+
+    pub fn init(&mut self, x0: f32, y0: f32) {
+        let nx = self.0.nx();
+        let ny = self.0.ny();
+        let x = ndarray::Array1::linspace(-0.5, 0.5, nx);
+        let y = ndarray::Array1::linspace(-0.5, 0.5, ny);
+
+        let (mut eta, mut etau, mut etav) = self.0.components_mut();
+
+        let sigma = 0.1;
+
+        for j in 0..ny {
+            let y = y[j];
+            for i in 0..nx {
+                let x = x[i];
+                let r = f32::hypot(x - x0, y - y0);
+
+                let f = 1.0 / (sigma * (2.0 * sbp::consts::PI).sqrt())
+                    * f32::exp(-0.5 * (r / sigma).powi(2));
+                eta[(j, i)] = 1.0 - 0.1 * f;
+                etau[(j, i)] = eta[(j, i)] * 0.0;
+                etav[(j, i)] = eta[(j, i)] * 0.0;
+            }
+        }
+    }
+
+    pub fn advance(&mut self) {
+        self.0.advance()
+    }
+
+    pub fn get_eta_ptr(&self) -> *const u8 {
+        self.0.eta().as_ptr() as *const u8
+    }
+
+    pub fn get_etau_ptr(&self) -> *const u8 {
+        self.0.etau().as_ptr() as *const u8
+    }
+
+    pub fn get_etav_ptr(&self) -> *const u8 {
+        self.0.etav().as_ptr() as *const u8
+    }
+}