R360: the ease and its switch come out again (#153, #175)

e2e/db/works.spec.ts

@@ -299,19 +299,6 @@ test("a new work: the photo goes through the upload chain as a work, then the fo
     expect(body?.subarray(8, 12).toString()).toBe("WEBP");
   }
 
-  // #153: the motion switch starts ON, because that is what a work saved
-  // before it existed reads as. Turned off and on again it must leave
-  // NOTHING behind — the parameters saved below carry no `glide` key at
-  // all, which is precisely how ON is stored.
-  const glideOn = page.getByTestId("work-r360-glide-on");
-  const glideOff = page.getByTestId("work-r360-glide-off");
-  await expect(glideOn).toHaveAttribute("aria-pressed", "true");
-  await glideOff.click();
-  await expect(glideOff).toHaveAttribute("aria-pressed", "true");
-  await expect(glideOn).toHaveAttribute("aria-pressed", "false");
-  await glideOn.click();
-  await expect(glideOn).toHaveAttribute("aria-pressed", "true");
-
   await page.getByLabel("Inwestor").fill("Archicom S.A.");
   await page.getByRole("button", { name: "Zapisz realizację" }).click();
   await expect.poll(() => created.length).toBe(1);

messages/en.json

@@ -571,10 +571,6 @@
         "paramStartFrame": "Start frame",
         "useThisFrame": "Use this frame",
         "paramFlattening": "Ring flattening",
-        "paramGlide": "Motion",
-        "glideOn": "Eased",
-        "glideOff": "Constant",
-        "glideHint": "Eased: a click on the ring gathers pace and settles onto its frame, and an orbit thrown with the hand keeps turning and slows to a stop. Constant is one pace from beginning to end. A visitor whose system asks for less motion gets neither — the orbit simply arrives.",
         "flatteningCircle": "Circle",
         "refused": {
           "not_a_zip": "This is not a zip archive.",

messages/pl.json

@@ -571,10 +571,6 @@
         "paramStartFrame": "Klatka startowa",
         "useThisFrame": "Użyj tej klatki",
         "paramFlattening": "Spłaszczenie pierścienia",
-        "paramGlide": "Ruch",
-        "glideOn": "Płynny",
-        "glideOff": "Jednostajny",
-        "glideHint": "Płynny: kliknięcie w pierścień nabiera tempa i wyhamowuje na klatce, a obrót rzucony ręką kręci się dalej i zwalnia do zatrzymania. Jednostajny to jedno tempo od początku do końca. Gość, którego system prosi o mniej ruchu, nie dostanie żadnego z nich — obrót po prostu staje na miejscu.",
         "flatteningCircle": "Okrąg",
         "refused": {
           "not_a_zip": "To nie jest archiwum zip.",

src/app/[locale]/(public)/[handle]/r360-params.tsx

@@ -11,7 +11,6 @@ import {
   type R360Cue,
   type R360Params,
 } from "@/lib/r360/frame-set-shared";
-import { glides } from "@/lib/r360/orbit";
 
 // #103: the owner's five parameters of an R360 set, under the preview in
 // the work form (the sixth, the frame count, is the set's, shown read-only
@@ -95,22 +94,6 @@ export function R360ParamControls({
           {t("flatteningCircle")}
         </Button>
       </RangeParam>
-      {/* #153: what the visitor's orbit does — a travel that eases in and
-          out of its frame, a drag that coasts on after the hand. Only OFF
-          is written into the parameters: absent is on, so a work saved
-          before the switch existed glides like the rest. */}
-      <TwoWayParam
-        name={t("paramGlide")}
-        disabled={disabled}
-        hint={t("glideHint")}
-        choices={([true, false] as const).map((on) => ({
-          key: String(on),
-          label: t(on ? "glideOn" : "glideOff"),
-          active: glides(params) === on,
-          pick: () => onChange({ glide: on ? undefined : false }),
-          testId: `work-r360-glide-${on ? "on" : "off"}`,
-        }))}
-      />
       <CueControls
         params={params}
         frameInView={frameInView}

src/components/ui/use-orbit.ts

@@ -7,7 +7,6 @@ import {
   frameAfterDrag,
   frameAfterKey,
   framesAlong,
-  glides,
   travelDuration,
   travelStop,
   wrapFrame,
@@ -66,9 +65,9 @@ export interface Orbit {
   /**
    * Moves along `path` (the frames on the way, the destination last) over
    * a time proportional to its length, within bounds; reduced motion
-   * jumps. A grab or a key on the way ends it where it is. #153: eased
-   * in and out of its frame on an orbit that glides, at a constant pace
-   * on one whose owner turned that off.
+   * jumps. A grab or a key on the way ends it where it is. One pace from
+   * beginning to end: #153's ease and #175's amounts for it are both gone
+   * (Dawid, 12.09.2026).
    */
   travelAlong: (path: readonly number[]) => void;
   cancelTravel: () => void;
@@ -93,11 +92,6 @@ export function useOrbit(
   } = {},
 ): Orbit {
   const { frameCount, framesPerWidth, direction } = params;
-  // #153: read once, and as a plain boolean — the parameters arrive as a
-  // fresh object on some renders (a form with no set yet builds its
-  // defaults inline), and a callback keyed on the object itself would be
-  // rebuilt with every one of them.
-  const glide = glides(params);
   const [frame, setFrameState] = useState(() =>
     wrapFrame(options.initialFrame ?? params.startFrame, frameCount),
   );
@@ -203,9 +197,9 @@ export function useOrbit(
         place(path[path.length - 1]);
         return;
       }
-      run(path, travelDuration(path.length), glide ? "eased" : "steady");
+      run(path, travelDuration(path.length), "steady");
     },
-    [cancelTravel, glide, place, run],
+    [cancelTravel, place, run],
   );
 
   // A frame count that changed under the hook (a new archive in the same
@@ -278,7 +272,6 @@ export function useOrbit(
           lift: { x: event.clientX, t: clockOf(event) },
           width: from.width,
           lifted: event.type === "pointerup",
-          glide,
           reducedMotion: reducedMotion(),
         },
         { framesPerWidth, direction },
@@ -290,7 +283,7 @@ export function useOrbit(
         "slowing",
       );
     },
-    [direction, frameCount, framesPerWidth, glide, run],
+    [direction, frameCount, framesPerWidth, run],
   );
 
   const onKeyDown = useCallback(

src/db/schema.ts

@@ -277,11 +277,11 @@ export const works = pgTable(
     developer: text("developer"),
     // #102 (A13): the frame set the owner's browser derived from a zip on
     // their own disk — the prefix `u/<user>/r360/<set id>/` the frames sit
-    // under (32 hex digits minted at presign) — and the six viewer
+    // under (32 hex digits minted at presign) — and the five viewer
     // parameters: frame count, direction, frames per picture width, start
-    // frame and ring flattening (#68), and whether the orbit glides
-    // (#153). Both or neither: a set without parameters cannot be shown,
-    // parameters without a set describe nothing.
+    // frame and ring flattening (#68). Both or neither: a set without
+    // parameters cannot be shown, parameters without a set describe
+    // nothing.
     //
     // #120: there is no archive column any more. The zip never leaves the
     // owner's machine, so the work names its frames and nothing else.
@@ -488,11 +488,6 @@ export interface R360ParamsRow {
   flattening: number;
   /** #107: labelled frames; absent on a work saved before them. */
   cues?: { frame: number; label: string }[];
-  /**
-   * #153: whether the orbit eases and coasts. Absent is ON — the field
-   * arrived after works were saved — so only `false` is ever written.
-   */
-  glide?: boolean;
 }
 
 // #30: a staged upload is bytes that already exist in the bucket but have no

src/lib/r360/cues.test.ts

@@ -79,30 +79,6 @@ describe("cues in the parameters", () => {
   });
 });
 
-// #153: the switch is stored the other way about from the cue points —
-// its absence is the feature being ON, so only an owner turning it off
-// is ever written into a work.
-describe("the glide in the parameters (#153)", () => {
-  it("reads a work saved before the switch as one that glides", () => {
-    const parsed = r360ParamsSchema.safeParse(defaultR360Params(4));
-    expect(parsed.success).toBe(true);
-    expect(parsed.data?.glide).toBeUndefined();
-  });
-
-  it("takes the owner turning it off, and refuses anything that is not a yes or a no", () => {
-    const off = r360ParamsSchema.safeParse({
-      ...defaultR360Params(4),
-      glide: false,
-    });
-    expect(off.success).toBe(true);
-    expect(off.data?.glide).toBe(false);
-    expect(
-      r360ParamsSchema.safeParse({ ...defaultR360Params(4), glide: "off" })
-        .success,
-    ).toBe(false);
-  });
-});
-
 describe("isDefaultR360Params", () => {
   it("is true for the defaults of any count, and false once anything of the owner's is in them", () => {
     expect(isDefaultR360Params(defaultR360Params(4))).toBe(true);
@@ -113,7 +89,6 @@ describe("isDefaultR360Params", () => {
       { startFrame: 3 },
       { flattening: 0.3 },
       { cues: [{ frame: 2, label: "Taras" }] },
-      { glide: false },
     ]) {
       expect(
         isDefaultR360Params({ ...defaultR360Params(4), ...change }),
@@ -124,11 +99,6 @@ describe("isDefaultR360Params", () => {
     expect(isDefaultR360Params({ ...defaultR360Params(4), cues: [] })).toBe(
       true,
     );
-    // #153: the glide left ON is the default, written down or not — it is
-    // nothing of the owner's to carry over to the next zip.
-    expect(isDefaultR360Params({ ...defaultR360Params(4), glide: true })).toBe(
-      true,
-    );
   });
 });
 

src/lib/r360/frame-set-shared.ts

@@ -136,10 +136,10 @@ export type R360Cue = z.infer<typeof cueSchema>;
  * are the cue points (#107) — optional, so a work saved before them reads
  * as a work with none.
  *
- * #153's glide is optional the other way about: absent means the orbit
- * glides, and only an owner turning it off is written down. A work saved
- * before the switch existed therefore reads as one that glides, which is
- * the motion it should have had all along.
+ * #153 added a motion switch here and #175 was to add amounts for it;
+ * both are gone (Dawid, 12.09.2026). A work saved while the switch existed
+ * may still carry `glide` — the object drops unknown keys on the way in,
+ * so it reads as a work without one, which is what it now is.
  */
 export const r360ParamsSchema = z
   .object({
@@ -149,7 +149,6 @@ export const r360ParamsSchema = z
     startFrame: z.number().int().min(1).max(R360_MAX_FRAMES),
     flattening: z.number().min(0.15).max(1),
     cues: z.array(cueSchema).max(R360_CUES_MAX).optional(),
-    glide: z.boolean().optional(),
   })
   .refine(
     (p) => p.framesPerWidth <= p.frameCount && p.startFrame <= p.frameCount,
@@ -178,8 +177,6 @@ export function defaultR360Params(frameCount: number): R360Params {
 /**
  * Whether the parameters are the defaults for their count, untouched and
  * without cue points — nothing of the owner's in them to keep (#107).
- * A glide turned off counts as something of theirs (#153); a glide left
- * on is the default, and is not written down at all.
  */
 export function isDefaultR360Params(params: R360Params): boolean {
   const defaults = defaultR360Params(params.frameCount);
@@ -188,7 +185,6 @@ export function isDefaultR360Params(params: R360Params): boolean {
     params.framesPerWidth === defaults.framesPerWidth &&
     params.startFrame === defaults.startFrame &&
     params.flattening === defaults.flattening &&
-    params.glide !== false &&
     !params.cues?.length
   );
 }

src/lib/r360/orbit.test.ts

@@ -8,7 +8,6 @@ import {
   frameAfterDrag,
   frameAfterKey,
   framesAlong,
-  glides,
   loadingOrder,
   nearestLoaded,
   pageStep,
@@ -97,15 +96,6 @@ describe("frameAfterKey", () => {
   });
 });
 
-describe("glides (#153)", () => {
-  it("is on unless the owner said otherwise: only false turns it off", () => {
-    expect(glides({})).toBe(true);
-    expect(glides({ glide: undefined })).toBe(true);
-    expect(glides({ glide: true })).toBe(true);
-    expect(glides({ glide: false })).toBe(false);
-  });
-});
-
 describe("framesAlong", () => {
   it("lists the frames a turn passes, the destination last and the frame it starts on not among them", () => {
     expect(framesAlong(1, 3, 10)).toEqual([2, 3, 4]);
@@ -253,7 +243,6 @@ describe("coastOnRelease (#153)", () => {
     lift: { x: 40, t: 1000 },
     width: 200,
     lifted: true,
-    glide: true,
     reducedMotion: false,
   };
   /** The same throw, the hand resting `rest` ms before it lets go. */
@@ -301,10 +290,6 @@ describe("coastOnRelease (#153)", () => {
     expect(coastOnRelease({ ...thrown, lifted: false }, p)).toBeNull();
   });
 
-  it("does not throw an orbit whose owner turned the glide off", () => {
-    expect(coastOnRelease({ ...thrown, glide: false }, p)).toBeNull();
-  });
-
   // Reduced motion wins over the owner: a jump is not a substitute for a
   // coast, so there is nothing to fall back to and the orbit stops dead.
   it("does not throw for a visitor whose system asks for less motion", () => {
@@ -353,23 +338,6 @@ describe("travelStop", () => {
     expect(travelStop(path, 0, 0)).toEqual({ frame: 1, arrived: true });
   });
 
-  // #153: the same path and the same time, the frames spread differently
-  // along it. A ten-frame path over a second, read against the constant
-  // pace every travel had before.
-  it("eased lingers at the start and settles onto its frame early", () => {
-    const ten = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10];
-    // A tenth of the way through, an eased travel has not left its first
-    // frame; a steady one is already on the second.
-    expect(travelStop(ten, 100, 1000, "eased").frame).toBe(1);
-    expect(travelStop(ten, 100, 1000).frame).toBe(2);
-    // Halfway is halfway either way — the curve is symmetric.
-    expect(travelStop(ten, 500, 1000, "eased").frame).toBe(6);
-    expect(travelStop(ten, 500, 1000).frame).toBe(6);
-    // And it is on its last frame with time left to settle there.
-    expect(travelStop(ten, 850, 1000, "eased").frame).toBe(10);
-    expect(travelStop(ten, 850, 1000).frame).toBe(9);
-  });
-
   it("slowing spends its speed early: three quarters of the path in half the time", () => {
     const ten = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10];
     expect(travelStop(ten, 500, 1000, "slowing").frame).toBe(8);
@@ -384,7 +352,7 @@ describe("travelStop", () => {
   // path — the orbit would walk backwards out of its destination.
   it("ends on the destination, on time, whatever curve it took", () => {
     const ten = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10];
-    for (const curve of ["steady", "eased", "slowing"] as const) {
+    for (const curve of ["steady", "slowing"] as const) {
       expect(travelStop(ten, 1000, 1000, curve), curve).toEqual({
         frame: 10,
         arrived: true,