Adj. to new perf arc speed req

TODO.md

@@ -1,2 +0,0 @@
-- Revisit CA/FA/VA legs
-- Revisit CD/FD/VD/FC legs

browser/src/parser/node.ts

@@ -14,4 +14,4 @@ fetch = async (path: string) => {
 
 const parser = await Parser.instance();
 
-console.log(JSON.stringify(await parser.parse(10657)));
+console.log(JSON.stringify(await parser.parse(10480)));

browser/src/parser/pathGenerators/generateTangentArc.ts

@@ -19,7 +19,7 @@ export const generateTangentArc = (
   const line: LineSegment[] = [[start.longitude, start.latitude]];
 
   // Check if there even is an arc
-  if (crsFromOrigin !== crsIntoEndpoint) {
+  if (!crsFromOrigin.equal(crsIntoEndpoint)) {
     // Course to the end of the arc
     let crsFromStartToEnd;
     if (!turnDir || turnDir === "E") {
@@ -75,7 +75,7 @@ export const generateTangentArc = (
         crsOrthogonalOnOrigin < 1 ? crsOrthogonalOnOrigin : 1;
     }
 
-    while (crsOrthogonalOnOrigin !== crsOrthogonalOnEndpoint) {
+    while (!crsOrthogonalOnOrigin.equal(crsOrthogonalOnEndpoint)) {
       if (turnDir === "R") {
         const delta = (
           crsOrthogonalOnEndpoint - crsOrthogonalOnOrigin

browser/src/parser/pathGenerators/handleTurnAtFix.ts

@@ -1,7 +1,6 @@
 import * as geolib from "geolib";
 import { generateTangentArc } from "./generateTangentArc.ts";
 import { generatePerformanceArc } from "./generatePerformanceArc.ts";
-import Parser from "../parser.ts";
 
 /**
  * @param crsIntoEndpoint Course into endpoint
@@ -9,6 +8,7 @@ import Parser from "../parser.ts";
  * @param crsFromOrigin Course from arc origin point
  * @param start Waypoint where leg starts
  * @param end Waypoint where leg ends
+ * @param speed Speed for performance arc
  * @param turnDir Turn direction
  * @returns Line segments from `start` to `end`
  */
@@ -18,6 +18,7 @@ export const handleTurnAtFix = (
   crsFromOrigin: number,
   start: NavFix,
   end: NavFix,
+  speed: number,
   turnDir?: TurnDirection
 ) => {
   const line: LineSegment[] = [];
@@ -36,7 +37,7 @@ export const handleTurnAtFix = (
       crsIntoIntercept,
       crsFromOrigin,
       start,
-      start.speed ? start.speed : Parser.AC_SPEED,
+      speed,
       turnDir
     );
 

browser/src/parser/terminators/CA.ts

@@ -1,39 +1,59 @@
 import * as geolib from "geolib";
-import { handleTurnAtFix } from "../pathGenerators/handleTurnAtFix.ts";
 import Parser from "../parser.ts";
 import { computeSpeed } from "../utils/computeSpeed.ts";
+import { generatePerformanceArc } from "../pathGenerators/generatePerformanceArc.ts";
 
 export const TerminatorsCA = (
   leg: CATerminalEntry,
   previousFix: NavFix,
   lastCourse: number
 ): [NavFix?, LineSegment[]?] => {
+  const speed = computeSpeed(leg, previousFix);
+  const crsIntoEndpoint = leg.Course.toTrue(previousFix);
+
+  let line: LineSegment[] = [];
+  if (previousFix.isFlyOver) {
+    line = generatePerformanceArc(
+      crsIntoEndpoint,
+      lastCourse,
+      previousFix,
+      speed,
+      leg.TurnDir
+    );
+  } else {
+    line.push([previousFix.longitude, previousFix.latitude]);
+  }
+
+  const arcEnd = { latitude: line.at(-1)![1], longitude: line.at(-1)![0] };
+  if (line.length > 1) {
+    lastCourse = geolib.getGreatCircleBearing(
+      {
+        latitude: line.at(-2)![1],
+        longitude: line.at(-2)![0],
+      },
+      arcEnd
+    );
+  }
+
   const targetFix: NavFix = {
     ...geolib.computeDestinationPoint(
-      previousFix,
+      arcEnd,
       (
         ((leg.Alt.parseAltitude() - (previousFix.altitude ?? 0)) /
           Parser.AC_VS) *
         ((previousFix.speed ? previousFix.speed : Parser.AC_SPEED) / 60)
       ).toMetre(),
-      leg.Course.toTrue(previousFix)
+      crsIntoEndpoint
     ),
     name: leg.Alt,
     isFlyOver: true,
-    altitude: leg.Alt.parseAltitude(),
+    altitude: leg.Alt ? leg.Alt.parseAltitude() : previousFix.altitude,
     speed: computeSpeed(leg, previousFix),
     speedConstraint: leg.SpeedLimit,
     altitudeConstraint: leg.Alt,
   };
 
-  const line = handleTurnAtFix(
-    leg.Course.toTrue(previousFix),
-    leg.Course.toTrue(previousFix),
-    lastCourse,
-    previousFix,
-    targetFix,
-    leg.TurnDir
-  );
+  line.push([targetFix.longitude, targetFix.latitude]);
 
   return [targetFix, line];
 };

browser/src/parser/terminators/CD.ts

@@ -49,7 +49,9 @@ export const TerminatorsCD = (
   }
   // Navaid in front of us
   else {
-    remainingDistance = distToNavaid - remainingDistance;
+    // Navaid will not be passed before distance is hit
+    if (distToNavaid > remainingDistance)
+      remainingDistance = distToNavaid - remainingDistance;
   }
   const targetFix: NavFix = {
     ...geolib.computeDestinationPoint(arcEnd, remainingDistance, lastCourse),

browser/src/parser/terminators/CF.ts

@@ -7,6 +7,8 @@ export const TerminatorsCF = (
   lastCourse: number,
   waypoint?: Waypoint
 ): [NavFix?, LineSegment[]?] => {
+  const speed = computeSpeed(leg, previousFix);
+
   const targetFix: NavFix = {
     latitude: leg.WptLat,
     longitude: leg.WptLon,
@@ -24,6 +26,7 @@ export const TerminatorsCF = (
     lastCourse,
     previousFix,
     targetFix,
+    speed,
     leg.TurnDir
   );
 

browser/src/parser/terminators/CI.ts

@@ -10,6 +10,7 @@ export const TerminatorsCI = (
   lastCourse: number
 ): [NavFix?, LineSegment[]?] => {
   const [crs, nextFix] = getCourseAndFixForIntercepts(nextLeg, previousFix);
+  const speed = computeSpeed(leg, previousFix);
 
   // Compute INTC
   const interceptFix: NavFix = {
@@ -32,6 +33,7 @@ export const TerminatorsCI = (
     lastCourse,
     previousFix,
     interceptFix,
+    speed,
     leg.TurnDir
   );
 

browser/src/parser/terminators/CR.ts

@@ -8,6 +8,7 @@ export const TerminatorsCR = (
   lastCourse: number
 ): [NavFix?, LineSegment[]?] => {
   const crsIntoEndpoint = leg.Course.toTrue(previousFix);
+  const speed = computeSpeed(leg, previousFix);
 
   const interceptFix: NavFix = {
     ...computeIntersection(
@@ -29,6 +30,7 @@ export const TerminatorsCR = (
     lastCourse,
     previousFix,
     interceptFix,
+    speed,
     leg.TurnDir
   );
 

browser/src/parser/terminators/FA.ts

@@ -1,22 +1,53 @@
 import * as geolib from "geolib";
-import { handleTurnAtFix } from "../pathGenerators/handleTurnAtFix.ts";
 import { computeSpeed } from "../utils/computeSpeed.ts";
 import Parser from "../parser.ts";
+import { generatePerformanceArc } from "../pathGenerators/generatePerformanceArc.ts";
 
 export const TerminatorsFA = (
   leg: FATerminalEntry,
   previousFix: NavFix,
   lastCourse: number
 ): [NavFix?, LineSegment[]?] => {
+  const refFix = {
+    latitude: leg.WptLat,
+    longitude: leg.WptLon,
+  };
+  const speed = computeSpeed(leg, previousFix);
+  const crsIntoEndpoint = leg.Course.toTrue(refFix);
+
+  let line: LineSegment[] = [];
+  if (previousFix.isFlyOver) {
+    line = generatePerformanceArc(
+      crsIntoEndpoint,
+      lastCourse,
+      previousFix,
+      speed,
+      leg.TurnDir
+    );
+  } else {
+    line.push([previousFix.longitude, previousFix.latitude]);
+  }
+
+  const arcEnd = { latitude: line.at(-1)![1], longitude: line.at(-1)![0] };
+  if (line.length > 1) {
+    lastCourse = geolib.getGreatCircleBearing(
+      {
+        latitude: line.at(-2)![1],
+        longitude: line.at(-2)![0],
+      },
+      arcEnd
+    );
+  }
+
   const targetFix: NavFix = {
     ...geolib.computeDestinationPoint(
-      { latitude: leg.WptLat, longitude: leg.WptLon },
+      arcEnd,
       (
         ((leg.Alt.parseAltitude() - (previousFix.altitude ?? 0)) /
           Parser.AC_VS) *
         ((previousFix.speed ? previousFix.speed : Parser.AC_SPEED) / 60)
       ).toMetre(),
-      leg.Course.toTrue(previousFix)
+      crsIntoEndpoint
     ),
     name: leg.Alt,
     isFlyOver: true,
@@ -26,14 +57,7 @@ export const TerminatorsFA = (
     altitudeConstraint: leg.Alt,
   };
 
-  const line = handleTurnAtFix(
-    leg.Course.toTrue(previousFix),
-    leg.Course.toTrue(previousFix),
-    lastCourse,
-    previousFix,
-    targetFix,
-    leg.TurnDir
-  );
+  line.push([targetFix.longitude, targetFix.latitude]);
 
   return [targetFix, line];
 };

browser/src/parser/terminators/FD.ts

@@ -53,7 +53,9 @@ export const TerminatorsFD = (
   }
   // Navaid in front of us
   else {
-    remainingDistance = distToNavaid - remainingDistance;
+    // Navaid will not be passed before distance is hit
+    if (distToNavaid > remainingDistance)
+      remainingDistance = distToNavaid - remainingDistance;
   }
   const targetFix: NavFix = {
     ...geolib.computeDestinationPoint(arcEnd, remainingDistance, lastCourse),

browser/src/parser/terminators/FM.ts

@@ -1,11 +1,14 @@
 import * as geolib from "geolib";
 import { handleTurnAtFix } from "../pathGenerators/handleTurnAtFix.ts";
+import { computeSpeed } from "../utils/computeSpeed.ts";
 
 export const TerminatorsFM = (
   leg: FMTerminalEntry,
   previousFix: NavFix,
   lastCourse: number
 ): [NavFix?, LineSegment[]?] => {
+  const speed = computeSpeed(leg, previousFix);
+
   const endpoint = geolib.computeDestinationPoint(
     previousFix,
     (10).toMetre(),
@@ -18,6 +21,7 @@ export const TerminatorsFM = (
     lastCourse,
     previousFix,
     endpoint,
+    speed,
     leg.TurnDir
   );
 

browser/src/parser/terminators/VA.ts

@@ -1,7 +1,7 @@
 import * as geolib from "geolib";
-import { handleTurnAtFix } from "../pathGenerators/handleTurnAtFix.ts";
 import Parser from "../parser.ts";
 import { computeSpeed } from "../utils/computeSpeed.ts";
+import { generatePerformanceArc } from "../pathGenerators/generatePerformanceArc.ts";
 
 // NOTE: No wind adjustments to be made, no clue how *that* would draw
 export const TerminatorsVA = (
@@ -9,32 +9,52 @@ export const TerminatorsVA = (
   previousFix: NavFix,
   lastCourse: number
 ): [NavFix?, LineSegment[]?] => {
+  const speed = computeSpeed(leg, previousFix);
+  const crsIntoEndpoint = leg.Course.toTrue(previousFix);
+
+  let line: LineSegment[] = [];
+  if (previousFix.isFlyOver) {
+    line = generatePerformanceArc(
+      crsIntoEndpoint,
+      lastCourse,
+      previousFix,
+      speed,
+      leg.TurnDir
+    );
+  } else {
+    line.push([previousFix.longitude, previousFix.latitude]);
+  }
+
+  const arcEnd = { latitude: line.at(-1)![1], longitude: line.at(-1)![0] };
+  if (line.length > 1) {
+    lastCourse = geolib.getGreatCircleBearing(
+      {
+        latitude: line.at(-2)![1],
+        longitude: line.at(-2)![0],
+      },
+      arcEnd
+    );
+  }
+
   const targetFix: NavFix = {
     ...geolib.computeDestinationPoint(
-      previousFix,
+      arcEnd,
       (
         ((leg.Alt.parseAltitude() - (previousFix.altitude ?? 0)) /
           Parser.AC_VS) *
         ((previousFix.speed ? previousFix.speed : Parser.AC_SPEED) / 60)
       ).toMetre(),
-      leg.Course.toTrue(previousFix)
+      crsIntoEndpoint
     ),
     name: leg.Alt,
     isFlyOver: true,
-    altitude: leg.Alt.parseAltitude(),
+    altitude: leg.Alt ? leg.Alt.parseAltitude() : previousFix.altitude,
     speed: computeSpeed(leg, previousFix),
     speedConstraint: leg.SpeedLimit,
     altitudeConstraint: leg.Alt,
   };
 
-  const line = handleTurnAtFix(
-    leg.Course.toTrue(previousFix),
-    leg.Course.toTrue(previousFix),
-    lastCourse,
-    previousFix,
-    targetFix,
-    leg.TurnDir
-  );
+  line.push([targetFix.longitude, targetFix.latitude]);
 
   return [targetFix, line];
 };

browser/src/parser/terminators/VD.ts

@@ -50,7 +50,9 @@ export const TerminatorsVD = (
   }
   // Navaid in front of us
   else {
-    remainingDistance = distToNavaid - remainingDistance;
+    // Navaid will not be passed before distance is hit
+    if (distToNavaid > remainingDistance)
+      remainingDistance = distToNavaid - remainingDistance;
   }
   const targetFix: NavFix = {
     ...geolib.computeDestinationPoint(arcEnd, remainingDistance, lastCourse),

browser/src/parser/terminators/VI.ts

@@ -11,6 +11,7 @@ export const TerminatorsVI = (
   lastCourse: number
 ): [NavFix?, LineSegment[]?] => {
   const [crs, nextFix] = getCourseAndFixForIntercepts(nextLeg, previousFix);
+  const speed = computeSpeed(leg, previousFix);
 
   // Compute INTC
   const interceptFix: NavFix = {
@@ -33,6 +34,7 @@ export const TerminatorsVI = (
     lastCourse,
     previousFix,
     interceptFix,
+    speed,
     leg.TurnDir
   );
 

browser/src/parser/terminators/VM.ts

@@ -1,5 +1,6 @@
 import * as geolib from "geolib";
 import { handleTurnAtFix } from "../pathGenerators/handleTurnAtFix.ts";
+import { computeSpeed } from "../utils/computeSpeed.ts";
 
 // NOTE: No wind adjustments to be made, no clue how *that* would draw
 export const TerminatorsVM = (
@@ -7,6 +8,8 @@ export const TerminatorsVM = (
   previousFix: NavFix,
   lastCourse: number
 ): [NavFix?, LineSegment[]?] => {
+  const speed = computeSpeed(leg, previousFix);
+
   const endpoint = geolib.computeDestinationPoint(
     previousFix,
     (10).toMetre(),
@@ -19,6 +22,7 @@ export const TerminatorsVM = (
     lastCourse,
     previousFix,
     endpoint,
+    speed,
     leg.TurnDir
   );
 

browser/src/parser/utils/extensions.ts

@@ -38,7 +38,7 @@ String.prototype.parseAltitude = function () {
     case 12: {
       const upper = Number.parseInt(this.substring(0, 5));
       const lower = Number.parseInt(this.substring(6, 12));
-      return (upper - lower) / 2;
+      return lower + (upper - lower) / 2;
     }
     default:
       return -1;