[UWP] SfImageEditor getting slow while drawing

[Marco Negroni]

Good afternoon,

as you can see in the attached video, at the start the drawing is going smoothly, then slow down until unusable.

Attachment: 20191122_134614_8cdb0dac.7z

[Rachel A]

Hi Marco, 

 

Thanks for contacting Syncfusion Support. 

 

We can replicate the scenario and the status will be updated on November 27^th after validation. 

 

Thanks, 

Rachel. 

[Vignesh Ramesh]

Hi Macro, 

 

Thank for your patience. 

 

We would like to inform that, we have rendering the points directly to InkCanvas in PointerMoved event. So, while drawing the long continuous path, the performance gets degraded. Currently we are checking the feasibility to overcome this problem at our end and update you the status on or before 29th December 2019. We appreciate your patience until then. 

 

Regards, 

Vignesh. 

[Vignesh Ramesh]

Hi Macro, 

Sorry for the mistake. 

We mentioned the month incorrectly in our last update. We will update the status in two business days, on 29th November 2019. 

Regards, 

Vignesh. 

[Rachel A]

Hi Marco, 

 

We have considered the reported problem as defect internally and the fix will be included in the upcoming Volume 4 main release scheduled to be released by the mid-December 2019. 

 

Thanks, 

Rachel. 

[Vignesh Ramesh]

Hi Macro, 

Sorry for the delay. 

  

Due to some complexities, we are not able to fix the reported issue as we promised. We will fix and include in our Weekly NuGet release which is scheduled to be rolled out on 31st December 2019. We appreciate your patience until then.  

Regards,  

Vignesh. 

[Marco Negroni]

I updated to 17.4.0.40, same problem.

[Rachel A]

Hi Marco,  

  

In our current implementation, we have used mouse points to draw free hand path. So, when you draw large path continuously, takes long time to collect the mouse points and convert it to drawing path data and it is caused performance issue.  

  

To overcome this problem, we tried InkCanvas for drawing path. But it has some framework level issue when using Touch for drawing path. We have created bug report in MSDN forum and GitHub. Once we got the solution, we will update you. Until, we suggest you, avoid continuous path drawing by giving some intervals while drawing.  

  

GitHub: https://github.com/microsoft/Win2D/issues/737 

MSDN: https://docs.microsoft.com/answers/questions/4075/using-inkcanvas-for-drawing-free-hand-path-is-not-1.html 

 

Note: We have not moved the fix to latest release. 

 

Regards, 

Rachel.