[BUG] Spam pinch zoom in and out V5

[robpot95]

What is the bug?

When you spam pinching zoom in and out and at the end i get this error:

The following assertion was thrown while handling a gesture:
'package:latlong2/latlong/LatLng.dart': Failed assertion: line 33 pos 16: 'latitude >= -90 && latitude <= 90': is not true.
package:latlong2/latlong/LatLng.dart:33

When the exception was thrown, this was the stack
#2      new LatLng
package:latlong2/latlong/LatLng.dart:33
#3      SphericalMercator.unproject
package:flutter_map/…/geo/crs.dart:398
#4      Crs.pointToLatLng
package:flutter_map/…/geo/crs.dart:37
#5      FlutterMapState.unproject
package:flutter_map/…/map/state.dart:555
#6      MapGestureMixin._offsetToCrs
package:flutter_map/…/gestures/gestures.dart:655
#7      MapGestureMixin.handleScaleUpdate
package:flutter_map/…/gestures/gestures.dart:440
#8      ScaleGestureRecognizer._advanceStateMachine.<anonymous closure>
package:flutter/…/gestures/scale.dart:702
#9      GestureRecognizer.invokeCallback
package:flutter/…/gestures/recognizer.dart:275
#10     ScaleGestureRecognizer._advanceStateMachine
package:flutter/…/gestures/scale.dart:701
#11     ScaleGestureRecognizer.handleEvent
package:flutter/…/gestures/scale.dart:553
#12     PointerRouter._dispatch
package:flutter/…/gestures/pointer_router.dart:98
#13     PointerRouter._dispatchEventToRoutes.<anonymous closure>
package:flutter/…/gestures/pointer_router.dart:143
#14     _LinkedHashMapMixin.forEach (dart:collection-patch/compact_hash.dart:625:13)
#15     PointerRouter._dispatchEventToRoutes
package:flutter/…/gestures/pointer_router.dart:141
#16     PointerRouter.route
package:flutter/…/gestures/pointer_router.dart:127
#17     GestureBinding.handleEvent
package:flutter/…/gestures/binding.dart:488
#18     GestureBinding.dispatchEvent
package:flutter/…/gestures/binding.dart:468
#19     RendererBinding.dispatchEvent
package:flutter/…/rendering/binding.dart:333
#20     GestureBinding._handlePointerEventImmediately
package:flutter/…/gestures/binding.dart:413
#21     GestureBinding.handlePointerEvent
package:flutter/…/gestures/binding.dart:376
#22     GestureBinding._flushPointerEventQueue
package:flutter/…/gestures/binding.dart:323
#23     GestureBinding._handlePointerDataPacket
package:flutter/…/gestures/binding.dart:292
#27     _invoke1 (dart:ui/hooks.dart:188:10)
#28     PlatformDispatcher._dispatchPointerDataPacket (dart:ui/platform_dispatcher.dart:424:7)
#29     _dispatchPointerDataPacket (dart:ui/hooks.dart:119:31)
(elided 5 frames from class _AssertionError and dart:async)
Handler: "onUpdate"
Recognizer: ScaleGestureRecognizer#4d903
    debugOwner: FlutterMapState#8fff9(tickers: tracking 2 tickers)

How can we reproduce it?

When you spam pinching zoom in and out

Do you have a potential solution?

No response

Platforms

Samsung Galaxy S21 (Android 12)

Severity

Minimum: Allows normal functioning

[JaffaKetchup]

Hi @robpot95, what version are you using?

[robpot95]

At the moment i'm using v5, due to issues with v6

Also notice somtimes i could get Infinity to NaN which cause the app freeze

[JaffaKetchup]

We're unable to provide much support for bugs like this in older versions, but we'll keep it open for now. Thanks for reporting!

[robpot95]

I understand, but can it be avoided until i can uppgradera to v6. Also i have no idea if this bug is in v6

[JaffaKetchup]

Unfortunately it probably can't be avoided, as it's a bug in the internals. Not sure if it's in V6 either, but there is a gesture rewrite on the way at some point soon, so hopefully that should help.

[mootw]

This is an issue with latlong2. it asserts that lat, lon objects are within +-90, +-180. which is causing the crash. potentially there is also still an issue with the gesture system too but #1750 (or a fix upstream) might fix the issue

[JaffaKetchup]

I would imagine we're not applying the extremity constraints correctly or something, and when a frame is skipped, it doesn't do the check? Or something like that maybe?

[JaffaKetchup]

Closing this for now. If this needs re-opening, please ping me!