stim: introduce a VectorField trait which we'll use to build a more structured approach to Stimulus

crates/applications/wavefront/src/main.rs

@@ -11,7 +11,7 @@ use coremem::{mat, Driver};
 use coremem::geom::{Coord as _, Cube, Index};
 use coremem::units::Seconds;
 use coremem::sim::spirv::{self, SpirvSim};
-use coremem::stim::{RegionGated, StimExt as _, UniformStimulus};
+use coremem::stim::{Fields, ModulatedVectorField, Pulse, RegionGated};
 use coremem::cross::vec::Vec3;
 
 type Mat = mat::FullyGenericMaterial<f32>;
@@ -46,12 +46,12 @@ fn main() {
         Index::new(201, height*3/4, 1).to_meters(feature_size),
     );
     // emit a constant E/H delta over this region for 100 femtoseconds
-    let stim = RegionGated::new(
-        center_region,
-        UniformStimulus::new(
-            Vec3::new(2e19, 0.0, 0.0),  // E field (per second)
-            Vec3::new(0.0, 0.0, 2e19/376.730)  // H field (per second)
-        ).gated(0.0, 100e-15),
+    let stim = ModulatedVectorField::new(
+        RegionGated::new(center_region, Fields::new_eh(
+            Vec3::new(2e19, 0.0, 0.0),
+            Vec3::new(0.0, 0.0, 2e19/376.730),
+        )),
+        Pulse::new(0.0, 100e-15),
     );
     driver.add_stimulus(stim);