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Bug 2675

Summary: gestures reported that I did not register
Product: SDL Reporter: Martin Gerhardy <martin.gerhardy>
Component: *don't know*Assignee: Ryan C. Gordon <icculus>
Status: RESOLVED INVALID QA Contact: Sam Lantinga <slouken>
Severity: normal    
Priority: P2 CC: sylvain.becker
Version: HG 2.1   
Hardware: x86_64   
OS: Linux   

Description Martin Gerhardy 2014-08-07 07:48:45 UTC 
I'm loading two gestures but get reports about three different gesture ids/hashes

My code is here:
https://github.com/mgerhardy/caveexpress/tree/445c0671da453865c583779edc4409af989a806e

loading two gestures via SDL_LoadDollarTemplates

I am handling the event SDL_DOLLARGESTURE to get the gestureId (see https://github.com/mgerhardy/caveexpress/commit/dd82601ad1e092303fe2bb96052d965ed82553f0#diff-e2600b64d0f4760a4393a6ac1d1a7127L120 )
Comment 1 Martin Gerhardy 2014-08-07 07:50:34 UTC 
... and my two gestures can be found here: https://github.com/mgerhardy/caveexpress/tree/5cdbf8f25eb85aee40ddd881193de7805ad4a342/src/engine/common/gestures

Both includes two fingers - the dollar gesture event is even thrown if I just tap with one finger - so the detected might be broken, too.
Comment 2 Ryan C. Gordon 2015-02-19 05:22:18 UTC 
Marking a large number of bugs with the "triage-2.0.4" keyword at once. Sorry if you got a lot of email from this. This is to help me sort through some bugs in regards to a 2.0.4 release. We may or may not fix this bug for 2.0.4, though!
Comment 3 Sylvain 2019-08-22 11:27:02 UTC 
your gesture datas are too big, should 512 bytes.
eg: sizeof(templ.path[0]),DOLLARNPOINTS

so it loads 3 + 4 gestures, instead of 1 + 1


https://hg.libsdl.org/SDL/file/1e4d6b83f946/src/events/SDL_gesture.c#l132

https://hg.libsdl.org/SDL/file/1e4d6b83f946/src/events/SDL_gesture.c#l246
Comment 4 Sylvain 2019-10-23 09:18:02 UTC 
I think gestures are not as good as you expect. you expect (and recorded) multi finger gesture, whereas there are only 1 finger gesture :/
this is why the file has a more entries than what you thought!