FC/IF/VR

2025-07-15 01:36:52 +02:00 · 2025-07-15 01:36:52 +02:00 · 8b04be187e
commit 8b04be187e
parent e41d002cef
25 changed files with 666 additions and 328 deletions
--- a/README.md
+++ b/README.md
@ -206,7 +206,9 @@ LGAV KOR1D SID (Cycle 2507, ID 10679)

 ### Instructions

- From present position, fly direct to fix identified by `WptID`
+- From present position, fly direct to fix identified by `WptID`.
+- If preceding fix and fix identified by `WptId` are the same, execute 360° turn
+  (requires `TurnDir`).

 ### Units

--- a/browser/src/App.tsx
+++ b/browser/src/App.tsx
@ -9,19 +9,20 @@ import L from "leaflet";
 const parser = await Parser.instance();

 const terminals = [
-  10394, 10395, 10475, 10480, 10482, 10485, 10653, 10654, 10657, 10659,
+  10394, 10395, 10475, 10480, 10482, 10485, 10653, 10654, 10657, 10659, 10679,
+  11798, 11909, 12765,
 ];

 function App() {
  const [selectedTerminal, setSelectedTerminal] = useState(terminals[0]);
-  const [procedure, setProcedure] = useState<object>();
+  const [procedures, setProcedures] = useState<object[]>([]);

  const mapRef = createRef<Leaflet.Map>();
  const layerRef = createRef<Leaflet.GeoJSON>();

  useEffect(() => {
    (async () => {
-      setProcedure(await parser.parse(selectedTerminal));
+      setProcedures(await parser.parse(selectedTerminal));
    })();
  }, [selectedTerminal]);

@ -49,87 +50,102 @@ function App() {
          attribution='&copy; <a href="https://www.openstreetmap.org/copyright">OpenStreetMap</a> contributors'
          url="https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png"
        />
-        <GeoJSON
-          key={hash(procedure ?? "") + "lines"}
-          data={procedure}
-          style={({ properties }) => ({
-            color: "#ff00ff",
-            stroke: true,
-            weight: 5,
-            opacity: 1,
-            dashArray: properties.isManual ? "20, 20" : undefined,
-          })}
-          filter={(feature) => feature.geometry.type !== "Point"}
-          ref={layerRef}
-        />
-        <GeoJSON
-          key={hash(procedure ?? "") + "points"}
-          data={procedure}
-          style={{
-            color: "black",
-            fill: true,
-            fillColor: "transparent",
-            stroke: true,
-            weight: 3,
-          }}
-          pointToLayer={({ properties }, latlng) => {
-            if (properties.isFlyOver)
-              return L.shapeMarker(latlng, {
-                shape: "triangle",
-                radius: 6,
-              });
-            if (properties.isIntersection)
-              return L.circleMarker(latlng, { radius: 6 });
+        {procedures.map((procedure) => (
+          <>
+            <GeoJSON
+              key={hash(procedure ?? "") + "lines"}
+              data={procedure}
+              style={({ properties }) => ({
+                color: "#ff00ff",
+                stroke: true,
+                weight: 5,
+                opacity: 1,
+                dashArray: properties.isManual ? "20, 20" : undefined,
+              })}
+              filter={(feature) => feature.geometry.type !== "Point"}
+              ref={layerRef}
+            />
+            <GeoJSON
+              key={hash(procedure ?? "") + "points"}
+              data={procedure}
+              style={{
+                color: "black",
+                fill: true,
+                fillColor: "transparent",
+                stroke: true,
+                weight: 3,
+              }}
+              pointToLayer={({ properties }, latlng) => {
+                if (properties.isFlyOver)
+                  return L.shapeMarker(latlng, {
+                    shape: "triangle",
+                    radius: 6,
+                  });
+                if (properties.isIntersection)
+                  return L.circleMarker(latlng, { radius: 6 });

-            return L.shapeMarker(latlng, {
-              shape: "star-4",
-              radius: 10,
-              rotation: 45,
-            });
-          }}
-          onEachFeature={({ geometry, properties }, layer) => {
-            if (geometry.type === "Point") {
-              layer.bindPopup(
-                `${properties.name}<br>
+                return L.shapeMarker(latlng, {
+                  shape: "star-4",
+                  radius: 10,
+                  rotation: 45,
+                });
+              }}
+              onEachFeature={({ geometry, properties }, layer) => {
+                if (geometry.type === "Point") {
+                  layer.bindPopup(
+                    `${properties.name}<br>
                ${properties.altitude} ft<br>
                ${properties.speed} kts<br>
                CNSTR: 
                ${properties.altitudeConstraint ?? ""}
                ${properties.speedConstraint ?? ""}<br>`
-              );
-            }
-          }}
-          filter={(feature) => feature.geometry.type === "Point"}
-        />
+                  );
+                }
+              }}
+              filter={(feature) => feature.geometry.type === "Point"}
+            />
+          </>
+        ))}
      </MapContainer>
      <div
        style={{
-          padding: "5px",
-          display: "flex",
-          flexDirection: "column",
-          gap: "10px",
-          width: "max-content",
+          overflowY: "scroll",
+          width: "200px",
        }}
      >
-        {terminals.map((terminal) => (
-          <div
-            key={terminal}
-            style={{
-              display: "flex",
-              flexDirection: "column",
-              background: selectedTerminal === terminal ? "#eeeeee" : undefined,
-            }}
-            onClick={() => setSelectedTerminal(terminal)}
-          >
-            <span style={{ whiteSpace: "nowrap" }}>
-              {(() => {
-                const t = parser.terminals.find(({ ID }) => ID === terminal);
-                return `${t?.ICAO} - ${t?.FullName}`;
-              })()}
-            </span>
-            <pre>({terminal})</pre>
-          </div>
-        ))}
+        <div
+          style={{
+            padding: "5px",
+            display: "flex",
+            flexDirection: "column",
+            gap: "10px",
+          }}
+        >
+          {terminals.map((terminal) => (
+            <div
+              key={terminal}
+              style={{
+                display: "flex",
+                flexDirection: "column",
+                background: "#eeeeee",
+                border:
+                  selectedTerminal === terminal
+                    ? "1px solid black"
+                    : "1px solid #eeeeee",
+                padding: "5px",
+              }}
+              onClick={() => setSelectedTerminal(terminal)}
+            >
+              <span style={{ whiteSpace: "nowrap" }}>
+                {(() => {
+                  const t = parser.terminals.find(({ ID }) => ID === terminal);
+                  return `${t?.ICAO} - ${t?.FullName}`;
+                })()}
+              </span>
+              <pre>({terminal})</pre>
+            </div>
+          ))}
+        </div>
      </div>
    </div>
  );
--- a/browser/src/parser/node.ts
+++ b/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(10480)));
+console.log(JSON.stringify(await parser.parse(12765)));
--- a/browser/src/parser/parser.ts
+++ b/browser/src/parser/parser.ts
@ -17,6 +17,15 @@ import { TerminatorsDF } from "./terminators/DF.ts";
 import { TerminatorsFD } from "./terminators/FD.ts";
 import { TerminatorsFA } from "./terminators/FA.ts";
 import { TerminatorsCD } from "./terminators/CD.ts";
+import { TerminatorsVR } from "./terminators/VR.ts";
+import { TerminatorsIF } from "./terminators/IF.ts";
+import { TerminatorsFC } from "./terminators/FC.ts";
+
+/*
+Runway IDs for LIED
+26156 - 34L
+26157 - 34R
+*/

 class Parser {
  private static _instance: Parser;
@ -62,244 +71,286 @@ class Parser {
  }

  public parse = async (terminalID: number) => {
-    // Private functions
-    /**
-     * @param line Line segments
-     */
-    const updateLastCourse = (line: LineSegment[]) => {
-      lastCourse = geolib.getGreatCircleBearing(
-        {
-          latitude: line.at(-2)![1],
-          longitude: line.at(-2)![0],
-        },
-        {
-          latitude: line.at(-1)![1],
-          longitude: line.at(-1)![0],
-        }
-      );
-    };
-
-    /**
-     * @param fix New fix
-     * @param line New line
-     * @param options Options for line rendering
-     */
-    const update = (
-      fix?: NavFix,
-      line?: LineSegment[],
-      options?: Record<string, unknown>
-    ) => {
-      if (fix) navFixes.push(fix);
-      if (line) {
-        lineSegments.push({ line, ...options });
-        updateLastCourse(line);
-      }
-    };
-
    // Get Procedure main
    const terminal = this.terminals.find(({ ID }) => ID === terminalID);
    if (!terminal) throw new Error("Procedure does not exists");
    // Get runway this procedure is for
-    const runway = this.runways.find(({ ID }) => ID === terminal.RwyID);
-    if (!runway) throw new Error("Procedure links to non existent Runway");
+    let runway = this.runways.find(({ ID }) => ID === terminal.RwyID);
+    if (!runway) {
+      let id = 26156;
+      if (typeof prompt !== "undefined")
+        //  throw new Error("Prompt not defined, cannot continue");
+
+        id = Number.parseInt(prompt("Runway ID") ?? "");
+      runway = this.runways.find(({ ID }) => ID === id);
+      if (!runway) throw new Error("Procedure links to non existent Runway");
+    }
    // Load procedure
-    const procedure = (await (
+    const procedures = (await (
      await fetch(`NavData/TermID_${terminalID}.json`)
    ).json()) as TerminalEntry[];
+    // Split into transitions
+    const transitions = new Set(procedures.map((proc) => proc.Transition));

-    // Output variables
-    const navFixes: NavFix[] = [];
-    const lineSegments: { line: LineSegment[]; [x: string]: unknown }[] = [];
-
-    // Initials
-    navFixes.push({
-      latitude: runway.Latitude,
-      longitude: runway.Longitude,
-      altitude: runway.Elevation,
-      speed: 0,
-      name: runway.Ident,
-    });
-    let lastCourse = runway.TrueHeading;
+    const output: object[] = [];

    // Main
-    for (let index = 0; index < procedure.length; index++) {
-      const leg = procedure[index];
-      const previousFix = navFixes.at(-1)!;
-      const waypoint = this.waypoints.filter(({ ID }) => ID === leg.WptID)[0];
+    transitions.forEach((transition) => {
+      // Private functions
+      /**
+       * @param line Line segments
+       */
+      const updateLastCourse = (line: LineSegment[]) => {
+        lastCourse = geolib.getGreatCircleBearing(
+          {
+            latitude: line.at(-2)![1],
+            longitude: line.at(-2)![0],
+          },
+          {
+            latitude: line.at(-1)![1],
+            longitude: line.at(-1)![0],
+          }
+        );
+      };

-      switch (leg.TrackCode) {
-        case "AF": {
-          const [fixToAdd, lineToAdd] = TerminatorsAF(
-            leg as AFTerminalEntry,
-            previousFix,
-            waypoint
-          );
-          update(fixToAdd, lineToAdd);
-          break;
+      /**
+       * @param fix New fix
+       * @param line New line
+       * @param options Options for line rendering
+       */
+      const update = (
+        fix?: NavFix,
+        line?: LineSegment[],
+        options?: Record<string, unknown>
+      ) => {
+        if (fix) navFixes.push(fix);
+        if (line) {
+          lineSegments.push({ line, ...options });
+          updateLastCourse(line);
        }
-        case "CA": {
-          const [fixToAdd, lineToAdd] = TerminatorsCA(
-            leg as CATerminalEntry,
-            previousFix,
-            lastCourse
-          );
-          update(fixToAdd, lineToAdd);
-          break;
+      };
+
+      // Output variables
+      const navFixes: NavFix[] = [];
+      const lineSegments: { line: LineSegment[]; [x: string]: unknown }[] = [];
+
+      // Initials
+      navFixes.push({
+        latitude: runway.Latitude,
+        longitude: runway.Longitude,
+        altitude: runway.Elevation,
+        speed: 0,
+        name: runway.Ident,
+      });
+      let lastCourse = runway.TrueHeading;
+
+      const procedure = procedures.filter(
+        (proc) => proc.Transition === transition
+      );
+      for (let index = 0; index < procedure.length; index++) {
+        const leg = procedure[index];
+        const previousFix = navFixes.at(-1)!;
+        const waypoint = this.waypoints.filter(({ ID }) => ID === leg.WptID)[0];
+
+        switch (leg.TrackCode) {
+          case "AF": {
+            const [fixToAdd, lineToAdd] = TerminatorsAF(
+              leg as AFTerminalEntry,
+              previousFix,
+              waypoint
+            );
+            update(fixToAdd, lineToAdd);
+            break;
+          }
+          case "CA": {
+            const [fixToAdd, lineToAdd] = TerminatorsCA(
+              leg as CATerminalEntry,
+              previousFix,
+              lastCourse
+            );
+            update(fixToAdd, lineToAdd);
+            break;
+          }
+          case "CD": {
+            const [fixToAdd, lineToAdd] = TerminatorsCD(
+              leg as CDTerminalEntry,
+              previousFix,
+              lastCourse
+            );
+            update(fixToAdd, lineToAdd);
+            break;
+          }
+          case "CF": {
+            const [fixToAdd, lineToAdd] = TerminatorsCF(
+              leg as CFTerminalEntry,
+              previousFix,
+              lastCourse,
+              waypoint
+            );
+            update(fixToAdd, lineToAdd);
+            break;
+          }
+          case "CI": {
+            const [fixToAdd, lineToAdd] = TerminatorsCI(
+              leg as CITerminalEntry,
+              procedure[index + 1],
+              previousFix,
+              lastCourse
+            );
+            update(fixToAdd, lineToAdd);
+            break;
+          }
+          case "CR": {
+            const [fixToAdd, lineToAdd] = TerminatorsCR(
+              leg as CRTerminalEntry,
+              previousFix,
+              lastCourse
+            );
+            update(fixToAdd, lineToAdd);
+            break;
+          }
+          case "DF": {
+            const [fixToAdd, lineToAdd] = TerminatorsDF(
+              leg as DFTerminalEntry,
+              previousFix,
+              lastCourse,
+              waypoint
+            );
+            update(fixToAdd, lineToAdd);
+            break;
+          }
+          case "FA": {
+            const [fixToAdd, lineToAdd] = TerminatorsFA(
+              leg as FATerminalEntry,
+              previousFix,
+              lastCourse
+            );
+            update(fixToAdd, lineToAdd);
+            break;
+          }
+          case "FC": {
+            const [fixToAdd, lineToAdd] = TerminatorsFC(
+              leg as FCTerminalEntry,
+              previousFix,
+              lastCourse
+            );
+            update(fixToAdd, lineToAdd);
+            break;
+          }
+          case "FD": {
+            const [fixToAdd, lineToAdd] = TerminatorsFD(
+              leg as FDTerminalEntry,
+              previousFix,
+              lastCourse
+            );
+            update(fixToAdd, lineToAdd);
+            break;
+          }
+          case "FM": {
+            const [fixToAdd, lineToAdd] = TerminatorsFM(
+              leg as FMTerminalEntry,
+              previousFix,
+              lastCourse
+            );
+            update(fixToAdd, lineToAdd, { isManual: true });
+            break;
+          }
+          case "HA":
+          case "HF":
+          case "HM":
+            console.error("Unknown TrackCode", leg.TrackCode);
+            break;
+          case "IF": {
+            const fixToAdd = TerminatorsIF(leg as RFTerminalEntry, waypoint);
+            navFixes.length = 0;
+            navFixes.push(fixToAdd);
+            break;
+          }
+          case "PI":
+            console.error("Unknown TrackCode", leg.TrackCode);
+            break;
+          case "RF": {
+            const [fixToAdd, lineToAdd] = TerminatorsRF(
+              leg as RFTerminalEntry,
+              procedure[index + 1],
+              previousFix,
+              lastCourse,
+              waypoint
+            );
+            update(fixToAdd, lineToAdd);
+            break;
+          }
+          case "TF": {
+            const [fixToAdd, lineToAdd] = TerminatorsTF(
+              leg as TFTerminalEntry,
+              previousFix,
+              lastCourse,
+              waypoint
+            );
+            update(fixToAdd, lineToAdd);
+            break;
+          }
+          case "VA": {
+            const [fixToAdd, lineToAdd] = TerminatorsVA(
+              leg as VATerminalEntry,
+              previousFix,
+              lastCourse
+            );
+            update(fixToAdd, lineToAdd);
+            break;
+          }
+          case "VD": {
+            const [fixToAdd, lineToAdd] = TerminatorsVD(
+              leg as VDTerminalEntry,
+              previousFix,
+              lastCourse
+            );
+            update(fixToAdd, lineToAdd);
+            break;
+          }
+          case "VI": {
+            const [fixToAdd, lineToAdd] = TerminatorsVI(
+              leg as VITerminalEntry,
+              procedure[index + 1],
+              previousFix,
+              lastCourse
+            );
+            update(fixToAdd, lineToAdd);
+            break;
+          }
+          case "VM": {
+            const [fixToAdd, lineToAdd] = TerminatorsVM(
+              leg as VMTerminalEntry,
+              previousFix,
+              lastCourse
+            );
+            update(fixToAdd, lineToAdd, { isManual: true });
+            break;
+          }
+          case "VR": {
+            const [fixToAdd, lineToAdd] = TerminatorsVR(
+              leg as VRTerminalEntry,
+              previousFix,
+              lastCourse
+            );
+            update(fixToAdd, lineToAdd);
+            break;
+          }
+          default:
+            console.error("Unknown TrackCode", leg.TrackCode);
+            break;
        }
-        case "CD": {
-          const [fixToAdd, lineToAdd] = TerminatorsCD(
-            leg as CDTerminalEntry,
-            previousFix,
-            lastCourse
-          );
-          update(fixToAdd, lineToAdd);
-          break;
-        }
-        case "CF": {
-          const [fixToAdd, lineToAdd] = TerminatorsCF(
-            leg as CFTerminalEntry,
-            previousFix,
-            lastCourse,
-            waypoint
-          );
-          update(fixToAdd, lineToAdd);
-          break;
-        }
-        case "CI": {
-          const [fixToAdd, lineToAdd] = TerminatorsCI(
-            leg as CITerminalEntry,
-            procedure[index + 1],
-            previousFix,
-            lastCourse
-          );
-          update(fixToAdd, lineToAdd);
-          break;
-        }
-        case "CR": {
-          const [fixToAdd, lineToAdd] = TerminatorsCR(
-            leg as CRTerminalEntry,
-            previousFix,
-            lastCourse
-          );
-          update(fixToAdd, lineToAdd);
-          break;
-        }
-        case "DF": {
-          const [fixToAdd, lineToAdd] = TerminatorsDF(
-            leg as DFTerminalEntry,
-            previousFix,
-            lastCourse,
-            waypoint
-          );
-          update(fixToAdd, lineToAdd);
-          break;
-        }
-        case "FA": {
-          const [fixToAdd, lineToAdd] = TerminatorsFA(
-            leg as FATerminalEntry,
-            previousFix,
-            lastCourse
-          );
-          update(fixToAdd, lineToAdd);
-          break;
-        }
-        case "FC":
-          console.error("Unknown TrackCode", leg.TrackCode);
-          break;
-        case "FD": {
-          const [fixToAdd, lineToAdd] = TerminatorsFD(
-            leg as FDTerminalEntry,
-            previousFix,
-            lastCourse
-          );
-          update(fixToAdd, lineToAdd);
-          break;
-        }
-        case "FM": {
-          const [fixToAdd, lineToAdd] = TerminatorsFM(
-            leg as FMTerminalEntry,
-            previousFix,
-            lastCourse
-          );
-          update(fixToAdd, lineToAdd, { isManual: true });
-          break;
-        }
-        case "HA":
-        case "HF":
-        case "HM":
-        case "IF":
-        case "PI":
-          console.error("Unknown TrackCode", leg.TrackCode);
-          break;
-        case "RF": {
-          const [fixToAdd, lineToAdd] = TerminatorsRF(
-            leg as RFTerminalEntry,
-            procedure[index + 1],
-            previousFix,
-            lastCourse,
-            waypoint
-          );
-          update(fixToAdd, lineToAdd);
-          break;
-        }
-        case "TF": {
-          const [fixToAdd, lineToAdd] = TerminatorsTF(
-            leg as TFTerminalEntry,
-            previousFix,
-            lastCourse,
-            waypoint
-          );
-          update(fixToAdd, lineToAdd);
-          break;
-        }
-        case "VA": {
-          const [fixToAdd, lineToAdd] = TerminatorsVA(
-            leg as VATerminalEntry,
-            previousFix,
-            lastCourse
-          );
-          update(fixToAdd, lineToAdd);
-          break;
-        }
-        case "VD": {
-          const [fixToAdd, lineToAdd] = TerminatorsVD(
-            leg as VDTerminalEntry,
-            previousFix,
-            lastCourse
-          );
-          update(fixToAdd, lineToAdd);
-          break;
-        }
-        case "VI": {
-          const [fixToAdd, lineToAdd] = TerminatorsVI(
-            leg as VITerminalEntry,
-            procedure[index + 1],
-            previousFix,
-            lastCourse
-          );
-          update(fixToAdd, lineToAdd);
-          break;
-        }
-        case "VM": {
-          const [fixToAdd, lineToAdd] = TerminatorsVM(
-            leg as VMTerminalEntry,
-            previousFix,
-            lastCourse
-          );
-          update(fixToAdd, lineToAdd, { isManual: true });
-          break;
-        }
-        case "VR":
-        default:
-          console.error("Unknown TrackCode", leg.TrackCode);
-          break;
      }
-    }

-    return geojson.parse([...navFixes, ...lineSegments], {
-      LineString: "line",
-      Point: ["latitude", "longitude"],
+      output.push(
+        geojson.parse([...navFixes, ...lineSegments], {
+          LineString: "line",
+          Point: ["latitude", "longitude"],
+        })
+      );
    });
+
+    return output;
  };
 }

--- a/browser/src/parser/pathGenerators/generatePerformanceArc.ts
+++ b/browser/src/parser/pathGenerators/generatePerformanceArc.ts
@ -8,6 +8,7 @@ import { computeTurnRate } from "../utils/computeTurnRate.ts";
 * @param start Arc origin point
 * @param speed Speed within arc
 * @param turnDir Turn direction
+ * @param force360 If true, force a 360° turn
 * @returns Line segments
 */
 export const generatePerformanceArc = (
@ -15,14 +16,16 @@ export const generatePerformanceArc = (
  crsFromOrigin: number,
  start: NavFix,
  speed: number,
-  turnDir?: TurnDirection
+  turnDir?: TurnDirection,
+  force360?: boolean
 ) => {
  const turnRate = computeTurnRate(speed, Parser.AC_BANK);
+  const originalCrsFromOrigin = crsFromOrigin;

  const line: LineSegment[] = [[start.longitude, start.latitude]];

  // Check if there even is an arc
-  if (!crsFromOrigin.equal(crsIntoEndpoint)) {
+  if (force360 || !crsFromOrigin.equal(crsIntoEndpoint)) {
    // Turn Dir
    if (!turnDir || turnDir === "E") {
      let prov = crsFromOrigin - crsIntoEndpoint;
@ -56,6 +59,39 @@ export const generatePerformanceArc = (

      line.push([arcFix.longitude, arcFix.latitude]);
    }
+
+    // Second half
+    if (force360) {
+      const temp = crsIntoEndpoint;
+      crsIntoEndpoint = originalCrsFromOrigin;
+      crsFromOrigin = temp;
+
+      while (!crsFromOrigin.equal(crsIntoEndpoint)) {
+        let time = 0;
+        if (turnDir === "R") {
+          const delta = (crsIntoEndpoint - crsFromOrigin).normaliseDegrees();
+          const increment = delta < 1 ? delta : 1;
+          crsFromOrigin = (crsFromOrigin + increment).normaliseDegrees();
+          time = increment / turnRate;
+        } else {
+          const delta = (crsFromOrigin - crsIntoEndpoint).normaliseDegrees();
+          const increment = delta < 1 ? delta : 1;
+          crsFromOrigin = (crsFromOrigin - increment).normaliseDegrees();
+          time = increment / turnRate;
+        }
+
+        const arcFix = geolib.computeDestinationPoint(
+          {
+            latitude: line.at(-1)![1],
+            longitude: line.at(-1)![0],
+          },
+          ((speed / 3600) * time).toMetre(),
+          crsFromOrigin
+        );
+
+        line.push([arcFix.longitude, arcFix.latitude]);
+      }
+    }
  }

  return line;
--- a/browser/src/parser/pathGenerators/generateTangentArc.ts
+++ b/browser/src/parser/pathGenerators/generateTangentArc.ts
@ -89,7 +89,6 @@ export const generateTangentArc = (
        crsOrthogonalOnOrigin -= delta < 1 ? delta : 1;
        crsOrthogonalOnOrigin = crsOrthogonalOnOrigin.normaliseDegrees();
      }
-      if (crsOrthogonalOnOrigin === crsOrthogonalOnEndpoint) break;

      const arcFix = geolib.computeDestinationPoint(
        arcCenter,
--- a/browser/src/parser/terminators/AF.ts
+++ b/browser/src/parser/terminators/AF.ts
@ -28,6 +28,7 @@ export const TerminatorsAF = (
      longitude: leg.WptLon,
    }
  );
+
  const line = generateAFArc(
    arcEndCrs,
    leg.Course.toTrue({ latitude: leg.NavLat, longitude: leg.NavLon }),
--- a/browser/src/parser/terminators/CA.ts
+++ b/browser/src/parser/terminators/CA.ts
@ -12,6 +12,7 @@ export const TerminatorsCA = (
  const crsIntoEndpoint = leg.Course.toTrue(previousFix);

  let line: LineSegment[] = [];
+
  if (previousFix.isFlyOver) {
    line = generatePerformanceArc(
      crsIntoEndpoint,
@ -48,7 +49,7 @@ export const TerminatorsCA = (
    name: leg.Alt,
    isFlyOver: true,
    altitude: leg.Alt ? leg.Alt.parseAltitude() : previousFix.altitude,
-    speed: computeSpeed(leg, previousFix),
+    speed: speed,
    speedConstraint: leg.SpeedLimit,
    altitudeConstraint: leg.Alt,
  };
--- a/browser/src/parser/terminators/CD.ts
+++ b/browser/src/parser/terminators/CD.ts
@ -15,6 +15,7 @@ export const TerminatorsCD = (
  const speed = computeSpeed(leg, previousFix);

  let line: LineSegment[] = [];
+
  if (previousFix.isFlyOver) {
    const crsIntoEndpoint = leg.Course.toTrue(previousFix);

@ -58,7 +59,7 @@ export const TerminatorsCD = (
    name: leg.Distance.toString(),
    isFlyOver: true,
    altitude: leg.Alt ? leg.Alt.parseAltitude() : previousFix.altitude,
-    speed: computeSpeed(leg, previousFix),
+    speed: speed,
    speedConstraint: leg.SpeedLimit,
    altitudeConstraint: leg.Alt,
  };
--- a/browser/src/parser/terminators/CF.ts
+++ b/browser/src/parser/terminators/CF.ts
@ -15,7 +15,7 @@ export const TerminatorsCF = (
    name: waypoint?.Ident ?? undefined,
    isFlyOver: leg.IsFlyOver,
    altitude: leg.Alt ? leg.Alt.parseAltitude() : previousFix.altitude,
-    speed: computeSpeed(leg, previousFix),
+    speed: speed,
    speedConstraint: leg.SpeedLimit,
    altitudeConstraint: leg.Alt,
  };
--- a/browser/src/parser/terminators/CI.ts
+++ b/browser/src/parser/terminators/CI.ts
@ -22,7 +22,7 @@ export const TerminatorsCI = (
    )!,
    isFlyOver: leg.IsFlyOver,
    altitude: leg.Alt ? leg.Alt.parseAltitude() : previousFix.altitude,
-    speed: computeSpeed(leg, previousFix),
+    speed: speed,
    speedConstraint: leg.SpeedLimit,
    altitudeConstraint: leg.Alt,
  };
--- a/browser/src/parser/terminators/CR.ts
+++ b/browser/src/parser/terminators/CR.ts
@ -1,38 +1,56 @@
+import * as geolib from "geolib";
 import { computeIntersection } from "../utils/computeIntersection.ts";
-import { handleTurnAtFix } from "../pathGenerators/handleTurnAtFix.ts";
 import { computeSpeed } from "../utils/computeSpeed.ts";
+import { generatePerformanceArc } from "../pathGenerators/generatePerformanceArc.ts";

 export const TerminatorsCR = (
  leg: CRTerminalEntry,
  previousFix: NavFix,
  lastCourse: number
 ): [NavFix?, LineSegment[]?] => {
-  const crsIntoEndpoint = leg.Course.toTrue(previousFix);
+  const navaid = {
+    latitude: leg.NavLat,
+    longitude: leg.NavLon,
+  };
+  const crsFromEndpoint = leg.Course.toTrue(previousFix);
+  const crsIntoEndpoint = leg.NavBear.toTrue(navaid);
  const speed = computeSpeed(leg, previousFix);

-  const interceptFix: NavFix = {
-    ...computeIntersection(
+  let line: LineSegment[] = [];
+
+  if (previousFix.isFlyOver) {
+    line = generatePerformanceArc(
+      crsFromEndpoint,
+      lastCourse,
      previousFix,
-      crsIntoEndpoint,
-      { latitude: leg.NavLat, longitude: leg.NavLon },
-      leg.NavBear.toTrue({ latitude: leg.NavLat, longitude: leg.NavLon })
-    )!,
+      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 interceptFix: NavFix = {
+    ...computeIntersection(arcEnd, crsFromEndpoint, navaid, crsIntoEndpoint)!,
    isFlyOver: leg.IsFlyOver,
    altitude: leg.Alt ? leg.Alt.parseAltitude() : previousFix.altitude,
-    speed: computeSpeed(leg, previousFix),
+    speed: speed,
    speedConstraint: leg.SpeedLimit,
    altitudeConstraint: leg.Alt,
  };

-  const line = handleTurnAtFix(
-    crsIntoEndpoint,
-    leg.Course.toTrue(previousFix),
-    lastCourse,
-    previousFix,
-    interceptFix,
-    speed,
-    leg.TurnDir
-  );
+  line.push([interceptFix.longitude, interceptFix.latitude]);

  return [interceptFix, line];
 };
--- a/browser/src/parser/terminators/DF.ts
+++ b/browser/src/parser/terminators/DF.ts
@ -22,6 +22,7 @@ export const TerminatorsDF = (
  };

  let line: LineSegment[] = [];
+
  if (previousFix.isFlyOver) {
    const crsIntoEndpoint = geolib.getGreatCircleBearing(
      previousFix,
@ -33,7 +34,9 @@ export const TerminatorsDF = (
      lastCourse,
      previousFix,
      speed,
-      leg.TurnDir
+      leg.TurnDir,
+      previousFix.latitude.equal(targetFix.latitude) &&
+        previousFix.longitude.equal(targetFix.longitude)
    );
  } else {
    line.push([previousFix.longitude, previousFix.latitude]);
--- a/browser/src/parser/terminators/FA.ts
+++ b/browser/src/parser/terminators/FA.ts
@ -16,6 +16,7 @@ export const TerminatorsFA = (
  const crsIntoEndpoint = leg.Course.toTrue(refFix);

  let line: LineSegment[] = [];
+
  if (previousFix.isFlyOver) {
    line = generatePerformanceArc(
      crsIntoEndpoint,
@ -52,7 +53,7 @@ export const TerminatorsFA = (
    name: leg.Alt,
    isFlyOver: true,
    altitude: leg.Alt ? leg.Alt.parseAltitude() : previousFix.altitude,
-    speed: computeSpeed(leg, previousFix),
+    speed: speed,
    speedConstraint: leg.SpeedLimit,
    altitudeConstraint: leg.Alt,
  };
--- a/browser/src/parser/terminators/FC.ts
+++ b/browser/src/parser/terminators/FC.ts
@ -0,0 +1,98 @@
+import * as geolib from "geolib";
+import { computeSpeed } from "../utils/computeSpeed.ts";
+import Parser from "../parser.ts";
+import { computeTurnRate } from "../utils/computeTurnRate.ts";
+
+// NOTE: Distance not adjusted for altitude in this demo
+export const TerminatorsFC = (
+  leg: FCTerminalEntry,
+  previousFix: NavFix,
+  lastCourse: number
+): [NavFix?, LineSegment[]?] => {
+  const refFix = {
+    latitude: leg.WptLat,
+    longitude: leg.WptLon,
+  };
+  const speed = computeSpeed(leg, previousFix);
+  const turnRate = computeTurnRate(speed, Parser.AC_BANK);
+  const trackIntoEndpoint = leg.Course.toTrue(refFix);
+
+  const line: LineSegment[] = [[previousFix.longitude, previousFix.latitude]];
+
+  if (previousFix.isFlyOver) {
+    let crsIntoEndpoint = trackIntoEndpoint;
+
+    // Check if there even is an arc
+    if (!crsIntoEndpoint.equal(lastCourse)) {
+      // Turn Dir
+      if (!leg.TurnDir || leg.TurnDir === "E") {
+        let prov = lastCourse - crsIntoEndpoint;
+        prov = prov > 180 ? prov - 360 : prov <= -180 ? prov + 360 : prov;
+        leg.TurnDir = prov > 0 ? "L" : "R";
+      }
+
+      // Generate arc
+      let condition = false;
+      do {
+        let time = 0;
+        if (leg.TurnDir === "R") {
+          const delta = (crsIntoEndpoint - lastCourse).normaliseDegrees();
+          const increment = delta < 1 ? delta : 1;
+          lastCourse = (lastCourse + increment).normaliseDegrees();
+          time = increment / turnRate;
+        } else {
+          const delta = (lastCourse - crsIntoEndpoint).normaliseDegrees();
+          const increment = delta < 1 ? delta : 1;
+          lastCourse = (lastCourse - increment).normaliseDegrees();
+          time = increment / turnRate;
+        }
+
+        const arcFix = geolib.computeDestinationPoint(
+          {
+            latitude: line.at(-1)![1],
+            longitude: line.at(-1)![0],
+          },
+          ((speed * time) / 3600).toMetre(),
+          lastCourse
+        );
+
+        line.push([arcFix.longitude, arcFix.latitude]);
+
+        if (leg.TurnDir === "R") {
+          condition = lastCourse > trackIntoEndpoint;
+        } else {
+          condition = lastCourse < trackIntoEndpoint;
+        }
+      } while (condition);
+    }
+  }
+
+  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(
+      arcEnd,
+      leg.Distance.toMetre(),
+      lastCourse
+    ),
+    name: leg.Distance.toString(),
+    isFlyOver: true,
+    altitude: leg.Alt ? leg.Alt.parseAltitude() : previousFix.altitude,
+    speed: speed,
+    speedConstraint: leg.SpeedLimit,
+    altitudeConstraint: leg.Alt,
+  };
+
+  line.push([targetFix.longitude, targetFix.latitude]);
+
+  return [targetFix, line];
+};
--- a/browser/src/parser/terminators/FD.ts
+++ b/browser/src/parser/terminators/FD.ts
@ -19,6 +19,7 @@ export const TerminatorsFD = (
  const speed = computeSpeed(leg, previousFix);

  let line: LineSegment[] = [];
+
  if (previousFix.isFlyOver) {
    const crsIntoEndpoint = leg.Course.toTrue(refFix);

@ -62,7 +63,7 @@ export const TerminatorsFD = (
    name: leg.Distance.toString(),
    isFlyOver: true,
    altitude: leg.Alt ? leg.Alt.parseAltitude() : previousFix.altitude,
-    speed: computeSpeed(leg, previousFix),
+    speed: speed,
    speedConstraint: leg.SpeedLimit,
    altitudeConstraint: leg.Alt,
  };
--- a/browser/src/parser/terminators/IF.ts
+++ b/browser/src/parser/terminators/IF.ts
@ -0,0 +1,19 @@
+import Parser from "../parser.ts";
+
+export const TerminatorsIF = (
+  leg: IFTerminalEntry,
+  waypoint?: Waypoint
+): NavFix => {
+  const targetFix: NavFix = {
+    latitude: leg.WptLat,
+    longitude: leg.WptLon,
+    name: waypoint?.Ident ?? undefined,
+    isFlyOver: leg.IsFlyOver,
+    altitude: leg.Alt ? leg.Alt.parseAltitude() : 0,
+    speed: leg.SpeedLimit ? leg.SpeedLimit : Parser.AC_SPEED,
+    speedConstraint: leg.SpeedLimit,
+    altitudeConstraint: leg.Alt,
+  };
+
+  return targetFix;
+};
--- a/browser/src/parser/terminators/RF.ts
+++ b/browser/src/parser/terminators/RF.ts
@ -29,6 +29,7 @@ export const TerminatorsRF = (
    { latitude: leg.CenterLat, longitude: leg.CenterLon },
    leg.TurnDir
  );
+
  line.push([targetFix.longitude, targetFix.latitude]);

  return [targetFix, line];
--- a/browser/src/parser/terminators/VA.ts
+++ b/browser/src/parser/terminators/VA.ts
@ -13,6 +13,7 @@ export const TerminatorsVA = (
  const crsIntoEndpoint = leg.Course.toTrue(previousFix);

  let line: LineSegment[] = [];
+
  if (previousFix.isFlyOver) {
    line = generatePerformanceArc(
      crsIntoEndpoint,
@ -49,7 +50,7 @@ export const TerminatorsVA = (
    name: leg.Alt,
    isFlyOver: true,
    altitude: leg.Alt ? leg.Alt.parseAltitude() : previousFix.altitude,
-    speed: computeSpeed(leg, previousFix),
+    speed: speed,
    speedConstraint: leg.SpeedLimit,
    altitudeConstraint: leg.Alt,
  };
--- a/browser/src/parser/terminators/VD.ts
+++ b/browser/src/parser/terminators/VD.ts
@ -16,6 +16,7 @@ export const TerminatorsVD = (
  const speed = computeSpeed(leg, previousFix);

  let line: LineSegment[] = [];
+
  if (previousFix.isFlyOver) {
    const crsIntoEndpoint = leg.Course.toTrue(previousFix);

@ -59,7 +60,7 @@ export const TerminatorsVD = (
    name: leg.Distance.toString(),
    isFlyOver: true,
    altitude: leg.Alt ? leg.Alt.parseAltitude() : previousFix.altitude,
-    speed: computeSpeed(leg, previousFix),
+    speed: speed,
    speedConstraint: leg.SpeedLimit,
    altitudeConstraint: leg.Alt,
  };
--- a/browser/src/parser/terminators/VI.ts
+++ b/browser/src/parser/terminators/VI.ts
@ -23,7 +23,7 @@ export const TerminatorsVI = (
    )!,
    isFlyOver: leg.IsFlyOver,
    altitude: leg.Alt ? leg.Alt.parseAltitude() : previousFix.altitude,
-    speed: computeSpeed(leg, previousFix),
+    speed: speed,
    speedConstraint: leg.SpeedLimit,
    altitudeConstraint: leg.Alt,
  };
--- a/browser/src/parser/terminators/VR.ts
+++ b/browser/src/parser/terminators/VR.ts
@ -0,0 +1,57 @@
+import * as geolib from "geolib";
+import { computeIntersection } from "../utils/computeIntersection.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 TerminatorsVR = (
+  leg: VRTerminalEntry,
+  previousFix: NavFix,
+  lastCourse: number
+): [NavFix?, LineSegment[]?] => {
+  const navaid = {
+    latitude: leg.NavLat,
+    longitude: leg.NavLon,
+  };
+  const crsFromEndpoint = leg.Course.toTrue(previousFix);
+  const crsIntoEndpoint = leg.NavBear.toTrue(navaid);
+  const speed = computeSpeed(leg, previousFix);
+
+  let line: LineSegment[] = [];
+
+  if (previousFix.isFlyOver) {
+    line = generatePerformanceArc(
+      crsFromEndpoint,
+      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 interceptFix: NavFix = {
+    ...computeIntersection(arcEnd, crsFromEndpoint, navaid, crsIntoEndpoint)!,
+    isFlyOver: leg.IsFlyOver,
+    altitude: leg.Alt ? leg.Alt.parseAltitude() : previousFix.altitude,
+    speed: speed,
+    speedConstraint: leg.SpeedLimit,
+    altitudeConstraint: leg.Alt,
+  };
+
+  line.push([interceptFix.longitude, interceptFix.latitude]);
+
+  return [interceptFix, line];
+};
--- a/browser/src/types/terminators/FC.d.ts
+++ b/browser/src/types/terminators/FC.d.ts
@ -0,0 +1,19 @@
+export declare global {
+  type FCTerminalEntry = Required<
+    Pick<
+      TerminalEntry,
+      | "WptID"
+      | "WptLat"
+      | "WptLon"
+      | "IsFlyOver"
+      | "NavID"
+      | "NavLat"
+      | "NavLon"
+      | "NavBear"
+      | "NavDist"
+      | "Course"
+      | "Distance"
+    >
+  > &
+    TerminalEntry;
+}
--- a/browser/src/types/terminators/IF.d.ts
+++ b/browser/src/types/terminators/IF.d.ts
@ -0,0 +1,6 @@
+export declare global {
+  type IFTerminalEntry = Required<
+    Pick<TerminalEntry, "WptID" | "WptLat" | "WptLon">
+  > &
+    TerminalEntry;
+}
--- a/browser/src/types/terminators/VR.d.ts
+++ b/browser/src/types/terminators/VR.d.ts
@ -0,0 +1,6 @@
+export declare global {
+  type VRTerminalEntry = Required<
+    Pick<TerminalEntry, "NavID" | "NavLat" | "NavLon" | "NavBear" | "Course">
+  > &
+    TerminalEntry;
+}