# `CameraLimits.dollySpeed`

> Contract 2.0.0 · package sha256 `a857eca95b35921109faf997094bb4192f12527d9d0fcd4be7e97f06425bad6e` · generated from `configurator-runtime.d.ts` by `services/onsite-scripter/scripts/build-contract-docs.mjs`; edit the source, not this file.

Property of [`CameraLimits`](CameraLimits.md) · stable · since 2.0.0

```ts
dollySpeed?: number | null;
```

Wheel and pinch dolly speed; [`touchpadDollyScale`](CameraLimits.touchpadDollyScale.md) multiplies it for a touchpad, and
[`coarsePointerDollyScale`](CameraLimits.coarsePointerDollyScale.md) on a coarse pointer. 0 turns the
shopper's dolly off (wheel, pinch and touchpad); view writes (`set`, `fit`, `views.go`) and a
resize's [`maxDistanceFit`](CameraLimits.maxDistanceFit.md) clamp (spec section 5.6) still change the distance. While the dolly
is off, the runtime leaves a wheel event over the element alone (no `preventDefault`), so the
browser's default, a page scroll, runs, as with 1.x's `enableZoom: false`; while it is on, the
runtime takes the wheel. In `'orbit'` mode at 0, a two-finger touch orbits, as in 1.x.

**Default:** unchanged (the document's, else 0.9)

## Generic-API test (spec 3.1)

| Rule | Result |
| --- | --- |
| 1. Neutral name | pass: `dollySpeed` names no product |
| 2. A precedent | pass: [Babylon.js ArcRotateCamera angularSensibility, wheelPrecision, panningSensibility](https://github.com/BabylonJS/Babylon.js/blob/master/packages/dev/core/src/Cameras/arcRotateCamera.ts) (row `G62`) |
| 3. Two apps, or labs | pass: 26 apps (ledger: app-04c2774145, app-37356bf09f, app-378d190f1b, app-4762caacdc, app-59c5b5751e, app-b362a81c85, app-f9a32142f1, configurator-template; fleet cross-check: app-04c2774145, app-37356bf09f, app-378d190f1b, app-4762caacdc, app-4f16d2f6da, app-4fd23bc869, app-510d750508, app-59c5b5751e and 18 more) |
| 4. The cheaper fix first | decided per need in Appendix B: rows `G62` at tier stable (a member only where no rule, data, asset or app code serves the need) |