Change to set reading times for orbits separately

src/calculations/orbit-calculations.ts

@@ -228,7 +228,7 @@ export class LambertSolutions {
 	}
 }
 
-const ZeroManoeuvre: Manoeuvre = {
+export const ZeroManoeuvre: Manoeuvre = {
 	time: 0,
 	progradeDeltaV: 0,
 	radialDeltaV: 0,

src/gui/common.ts

@@ -13,7 +13,9 @@ export interface OrbitalParameters {
 	positionChoice: "timeToPeriapsis" | "altitude";
 	timeToPeriapsis: number,
 	altitude: number,
-	headingInwards: boolean
+	headingInwards: boolean,
+
+	currentTimeAtReading: number
 }
 
 export const DefaultOrbitalParameters: OrbitalParameters = {
@@ -27,7 +29,8 @@ export const DefaultOrbitalParameters: OrbitalParameters = {
 	positionChoice: "timeToPeriapsis",
 	timeToPeriapsis: 0,
 	altitude: 100000,
-	headingInwards: true
+	headingInwards: true,
+	currentTimeAtReading: 0
 }
 
 export function encodeOrbitalParameters(orbitalParameters: OrbitalParameters): string {

src/gui/intercept.ts

@@ -4,6 +4,7 @@ import { type Body } from "../calculations/constants";
 import type { FindBestInterceptMessage, ProgressMessage } from "./worker";
 import type { ChangingStorageValue } from "../storage";
 import { ManoeuvresGui } from "./manoeuvres";
+import { extrapolateTrajectory, type OrbitalCoordinates } from "../calculations/orbit-calculations";
 
 export class InterceptTargetGui {
 	currentTime: ChangingStorageValue<number>;
@@ -72,11 +73,24 @@ export class InterceptTargetGui {
 				let startingOrbitalParameters = this.startingOrbitalParameters.getCurrentValue();
 				let targetOrbitalParameters = this.targetOrbitalParameters.getCurrentValue();
 
-				let startingCoordinates = getCoordinatesFromParameters(startingOrbitalParameters, body);
+				let startingCoordinates: OrbitalCoordinates | null = getCoordinatesFromParameters(startingOrbitalParameters, body);
-				let targetCoordinates = getCoordinatesFromParameters(targetOrbitalParameters, body);
+				let targetCoordinates: OrbitalCoordinates | null = getCoordinatesFromParameters(targetOrbitalParameters, body);
+
+				let startTime = Math.max(currentTime, startingOrbitalParameters.currentTimeAtReading, targetOrbitalParameters.currentTimeAtReading);
+
+				if (startTime > startingOrbitalParameters.currentTimeAtReading) {
+					let addedTime = startTime - startingOrbitalParameters.currentTimeAtReading;
+					startingCoordinates = extrapolateTrajectory(addedTime, startingCoordinates, body);
+				}
+
+				if (startTime > targetOrbitalParameters.currentTimeAtReading) {
+					let addedTime = startTime - targetOrbitalParameters.currentTimeAtReading;
+					targetCoordinates = extrapolateTrajectory(addedTime, targetCoordinates, body);
+				}
 
 				let additionalTrueAnomaly = this.additionalTrueAnomaly.getCurrentValue();
 
+				if (startingCoordinates && targetCoordinates) {
 					this.worker = new Worker(new URL('./worker.ts', import.meta.url), {type: 'module'});
 					this.worker.addEventListener("message", event => {
 						let transferResponse = event.data as ProgressMessage;
@@ -104,6 +118,15 @@ export class InterceptTargetGui {
 					};
 
 					this.worker.postMessage(workerMessage);
+				} else {
+					this.manoeuvresGui.displayProgress({
+						type: "ProgressMessage",
+						finished: true,
+						percentDone: 100,
+						bestDeltaV: null,
+						bestTransfer: null
+					});
+				}
 			}
 		});
 

src/gui/orbit.ts

@@ -9,8 +9,10 @@ export class OrbitalParametersGui {
 	parentDiv: HTMLDivElement;
 	orbitalParameters: ChangingStorageValue<OrbitalParameters>;
 	
+	currentTime: ChangingStorageValue<number>;
+	currentTimeGui: TimeGui;
 	timeToPeriapsis: ChangingStorageValue<number>;
-	timeGui: TimeGui;
+	timeToPeriapsisGui: TimeGui;
 	
 	altitudeData: ChangingStorageValue<AltitudeData>;
 	altitudeGui: AltitudeGui;
@@ -21,7 +23,10 @@ export class OrbitalParametersGui {
 		this.orbitalParameters = orbitalParameters;
 		
 		this.timeToPeriapsis = new ChangingStorageValue(orbitalParameters.getCurrentValue().timeToPeriapsis);
-		this.timeGui = new TimeGui(this.timeToPeriapsis, false);
+		this.timeToPeriapsisGui = new TimeGui(this.timeToPeriapsis, false);
+
+		this.currentTime = new ChangingStorageValue(orbitalParameters.getCurrentValue().currentTimeAtReading);
+		this.currentTimeGui = new TimeGui(this.currentTime, true);
 
 		this.altitudeData = new ChangingStorageValue({altitude: orbitalParameters.getCurrentValue().altitude, headingInwards: orbitalParameters.getCurrentValue().headingInwards});
 		this.altitudeGui = new AltitudeGui(this.altitudeData);
@@ -88,6 +93,17 @@ export class OrbitalParametersGui {
 			addToParent([createLabel(aopId, "Argument of periapsis:"), aopInput], this.parentDiv);
 		}
 
+		let currentTimeHeader = document.createElement("h5");
+		currentTimeHeader.appendChild(document.createTextNode("Time of reading:"));
+
+		if (guiType == "orbitWithPosition") {
+			addToParent(currentTimeHeader, this.parentDiv);
+			this.parentDiv.appendChild(this.currentTimeGui.parentDiv);
+		}
+
+		let positionHeader = document.createElement("h5");
+		positionHeader.appendChild(document.createTextNode("Position in orbit:"));
+
 		let positionChoiceId = crypto.randomUUID();
 		let timeToPeriapsisChoiceId = crypto.randomUUID();
 		let altitudeChoiceId = crypto.randomUUID();
@@ -95,7 +111,7 @@ export class OrbitalParametersGui {
 		let timeToPeriapsisButton = createRadioButton(positionChoiceId, timeToPeriapsisChoiceId);
 		let altitudeButton = createRadioButton(positionChoiceId, altitudeChoiceId);
 		if (guiType == "orbitWithPosition") {
-			addToParent([timeToPeriapsisButton, createLabel(timeToPeriapsisChoiceId, "Use time to periapsis"), altitudeButton, createLabel(altitudeChoiceId, "Use altitude")], this.parentDiv);
+			addToParent([positionHeader, timeToPeriapsisButton, createLabel(timeToPeriapsisChoiceId, "Use time to periapsis"), altitudeButton, createLabel(altitudeChoiceId, "Use altitude")], this.parentDiv);
 		}
 
 		let positionDiv = document.createElement("div");
@@ -118,7 +134,7 @@ export class OrbitalParametersGui {
 			positionDiv.innerHTML = "";
 			if (value.positionChoice == "timeToPeriapsis") {
 				timeToPeriapsisButton.setAttribute("checked", "");
-				positionDiv.appendChild(this.timeGui.parentDiv);
+				positionDiv.appendChild(this.timeToPeriapsisGui.parentDiv);
 			} else {
 				altitudeButton.setAttribute("checked", "");
 				positionDiv.appendChild(this.altitudeGui.parentDiv);
@@ -139,6 +155,7 @@ export class OrbitalParametersGui {
 				altitude: value.altitude,
 				headingInwards: value.headingInwards
 			}, this.sourceId);
+			this.currentTime.set(value.currentTimeAtReading, this.sourceId);
 		});
 
 		const onChange = () => {
@@ -161,7 +178,8 @@ export class OrbitalParametersGui {
 				positionChoice: timeToPeriapsisButton.checked ? "timeToPeriapsis" : "altitude",
 				timeToPeriapsis: this.timeToPeriapsis.getCurrentValue(),
 				altitude: this.altitudeData.getCurrentValue().altitude,
-				headingInwards: this.altitudeData.getCurrentValue().headingInwards
+				headingInwards: this.altitudeData.getCurrentValue().headingInwards,
+				currentTimeAtReading: this.currentTime.getCurrentValue()
 			};
 
 			this.orbitalParameters.set(newOrbitalParameters, this.sourceId);
@@ -180,8 +198,14 @@ export class OrbitalParametersGui {
 			altitudeButton
 		].forEach(input => input.addEventListener("change", onChange));
 
+		this.currentTime.listenToValue((sourceId, _) => {
+			if (sourceId == this.currentTimeGui.sourceId) {
+				onChange();
+			}
+		});
+
 		this.timeToPeriapsis.listenToValue((sourceId, _) => {
-			if (sourceId == this.timeGui.sourceId) {
+			if (sourceId == this.timeToPeriapsisGui.sourceId) {
 				onChange();
 			}
 		});
@@ -190,6 +214,6 @@ export class OrbitalParametersGui {
 			if (sourceId == this.altitudeGui.sourceId) {
 				onChange();
 			}
-		})
+		});
 	}
 }

src/gui/simpleplanechange.ts

@@ -3,7 +3,7 @@ import { type Body } from "../calculations/constants";
 import type { ChangingStorageValue } from "../storage";
 import { OrbitalParametersGui } from "./orbit";
 import { ManoeuvresGui } from "./manoeuvres";
-import { calculateSimplePlaneChange, type Transfer } from "../calculations/orbit-calculations";
+import { calculateSimplePlaneChange, extrapolateTrajectory, ZeroManoeuvre, type OrbitalCoordinates, type SimplePlaneChange, type Transfer } from "../calculations/orbit-calculations";
 import { type ProgressMessage } from "./worker";
 
 export class SimplePlaneChangeGui {
@@ -52,17 +52,32 @@ export class SimplePlaneChangeGui {
 			let targetOrbitalParameters = this.targetOrbitalParameters.getCurrentValue();
 			let circularizeOrbit = this.circularizeOrbit.getCurrentValue();
 
-			let coordinates = getCoordinatesFromParameters(startingOrbitalParameters, body);
+			let coordinates: OrbitalCoordinates | null = getCoordinatesFromParameters(startingOrbitalParameters, body);
-			let planeChange = calculateSimplePlaneChange(
+
+			// If we need to extrapolate the orbit, do that
+			let startingTime = Math.max(currentTime, startingOrbitalParameters.currentTimeAtReading);
+			if (startingTime > startingOrbitalParameters.currentTimeAtReading) {
+				let addedTime = startingTime - startingOrbitalParameters.currentTimeAtReading;
+				coordinates = extrapolateTrajectory(addedTime, coordinates, body);
+			}
+
+			let planeChange: SimplePlaneChange = {
+				firstManoeuvre: ZeroManoeuvre,
+				secondManoeuvre: ZeroManoeuvre
+			}
+
+			if (coordinates) {
+				planeChange = calculateSimplePlaneChange(
 					coordinates,
 					body,
 					targetOrbitalParameters.inclination,
 					targetOrbitalParameters.longitudeOfAscendingNode,
 					circularizeOrbit
 				);
+			}
 
-			planeChange.firstManoeuvre.time += currentTime;
+			planeChange.firstManoeuvre.time += startingTime;
-			planeChange.secondManoeuvre.time += currentTime;
+			planeChange.secondManoeuvre.time += startingTime;
 
 			let bestDeltaV = Math.min(planeChange.firstManoeuvre.totalDeltaV, planeChange.secondManoeuvre.totalDeltaV);
 			let bestTransfer: Transfer = {

src/gui/targetorbit.ts

@@ -1,4 +1,5 @@
 import type { Body } from "../calculations/constants";
+import { extrapolateTrajectory, type OrbitalCoordinates } from "../calculations/orbit-calculations";
 import type { ChangingStorageValue } from "../storage";
 import { getCoordinatesFromParameters, getOrbitFromParameters, type OrbitalParameters } from "./common";
 import { ManoeuvresGui } from "./manoeuvres";
@@ -58,9 +59,16 @@ export class TargetOrbitGui {
 				let targetOrbitalParameters = this.targetOrbitalParameters.getCurrentValue();
 				let body = this.body.getCurrentValue();
 
-				let startingCoordinates = getCoordinatesFromParameters(startingOrbitalParameters, body);
+				let startingCoordinates: OrbitalCoordinates | null = getCoordinatesFromParameters(startingOrbitalParameters, body);
 				let targetOrbit = getOrbitFromParameters(targetOrbitalParameters, body.radius);
 
+				let startingTime = Math.max(currentTime, startingOrbitalParameters.currentTimeAtReading);
+				if (startingTime > startingOrbitalParameters.currentTimeAtReading) {
+					let addedTime = startingTime - startingOrbitalParameters.currentTimeAtReading;
+					startingCoordinates = extrapolateTrajectory(addedTime, startingCoordinates, body);
+				}
+
+				if (startingCoordinates) {
 					this.worker = new Worker(new URL('./worker.ts', import.meta.url), {type: 'module'});
 					this.worker.addEventListener("message", event => {
 						let transferResponse = event.data as ProgressMessage;
@@ -87,6 +95,17 @@ export class TargetOrbitGui {
 					};
 
 					this.worker.postMessage(workerMessage);
+				} else {
+					let progressMessage: ProgressMessage = {
+						type: "ProgressMessage",
+						percentDone: 100,
+						finished: true,
+						bestDeltaV: null,
+						bestTransfer: null
+					};
+
+					this.manoeuvresGui.displayProgress(progressMessage);
+				}
 			}
 		});
 	}

src/style.css

@@ -29,6 +29,11 @@
 	width: 150px;
 }
 
+.orbitalParameter h5 {
+	margin: 0px;
+	padding: 0px;
+}
+
 #calculationChoice label {
 	margin-right: 30px;
 }