Refine ship orders and viewer controls

apps/viewer/src/viewerMath.ts

@@ -15,6 +15,7 @@ import type {
 import type { ZoomBlend } from "./viewerConstants";
 
 export const KILOMETERS_PER_AU = 149_597_870.7;
+export const METERS_PER_KILOMETER = 1000;
 export const DISPLAY_UNITS_PER_KILOMETER = 0.0000015;
 export const DISPLAY_UNITS_PER_LIGHT_YEAR = 2600;
 
@@ -44,7 +45,7 @@ function formatNumber(value: number, fractionDigits: number) {
 }
 
 export function formatLocalDistance(value: number): string {
-  return `${formatNumber(value, 0)} km`;
+  return `${formatNumber(value, value >= 100 ? 0 : 1)} m`;
 }
 
 export function formatSystemDistance(value: number): string {
@@ -76,6 +77,16 @@ export function formatAdaptiveDistanceFromKilometers(kilometers: number): string
   return `${formatNumber(meters, meters >= 100 ? 0 : 1)} m`;
 }
 
+export function formatAdaptiveDistanceFromMeters(meters: number): string {
+  const absoluteMeters = Math.max(0, meters);
+  if (absoluteMeters >= METERS_PER_KILOMETER) {
+    const kilometers = absoluteMeters / METERS_PER_KILOMETER;
+    return `${formatNumber(kilometers, kilometers >= 100 ? 0 : 2)} km`;
+  }
+
+  return `${formatNumber(absoluteMeters, absoluteMeters >= 100 ? 0 : 1)} m`;
+}
+
 export function formatShipSpeed(ship: ShipSnapshot): string {
   const speed = Math.max(0, ship.travelSpeed);
   const unit = ship.travelSpeedUnit;
@@ -107,7 +118,7 @@ export function smoothBand(value: number, start: number, end: number): number {
 }
 
 export function computeZoomBlend(distance: number): ZoomBlend {
-  const localToSystem = smoothBand(distance, 1200, 5200);
+  const localToSystem = smoothBand(distance, 120, 650);
   const systemToUniverse = smoothBand(distance, 9000, 22000);
 
   return {