fix: keep camera geometry aligned with trajectories

apps/acoustic-camera/model.js

@@ -62,10 +62,30 @@ export function shiftSceneDistance(scene, experiment, nextDistance) {
   const previousDistance = experiment.scan.z;
   const delta = nextDistance - previousDistance;
   experiment.scan.z = nextDistance;
-  for (const source of scene.sources) source.position[2] += delta;
+  for (const source of scene.sources) {
+    source.position[2] += delta;
+    for (const keyframe of source.trajectory ?? []) keyframe.position[2] += delta;
+  }
   if (scene.image?.plane) scene.image.plane.z += delta;
 }
 
+function sourceGeometryPositions(scene) {
+  return (scene.sources ?? []).flatMap((source) => {
+    const candidates = [source.position, ...(source.trajectory ?? []).map(({ position }) => position)];
+    const uniquePositions = new Map();
+    for (const position of candidates) {
+      if (
+        Array.isArray(position) &&
+        position.length === 3 &&
+        position.every(Number.isFinite)
+      ) {
+        uniquePositions.set(position.join(","), position);
+      }
+    }
+    return [...uniquePositions.values()];
+  });
+}
+
 export function alignExperimentToScene(experiment, scene) {
   const plane = scene.image?.plane;
   if (plane) {
@@ -79,13 +99,7 @@ export function alignExperimentToScene(experiment, scene) {
     return "image-plane";
   }
 
-  const positions = (scene.sources ?? [])
-    .map((source) => source.position)
-    .filter((position) =>
-      Array.isArray(position) &&
-      position.length === 3 &&
-      position.every(Number.isFinite),
-    );
+  const positions = sourceGeometryPositions(scene);
   if (positions.length === 0) return "unchanged";
 
   const paddedBounds = (values) => {