Triggers fire incorrectly

[Anonymous]

In the attached score, triggers #172 and #173 fire when cursor #1 reverses direction at the end of its curve (when that cursor is nowhere near those triggers). They do also fire at the correct time (when cursor #1 strikes them).

Score and messages-log attached.

Best
–Bob

OSX 10.6.7
WinXP/sp3
IanniX 0.8.2

[Anonymous]

I think I “see” what’s happening. Just now I had my monitor color corrections set in such a way that certain visual attributes were emphasized. My eyes happened to focus on the right end of curve #10001 the moment its cursor changed direction at the left end of that curve. At that moment, and for only a couple milliseconds, the shape of a cursor appeared at the right end of the line (while it was apparently at the left end changing its direction).

So, here’s my speculation: At end end of its travel, the cursor makes a high-velocity sweep all the way to the other end (it must also reverse at high velocity, but those triggers only generate a single OSC during the retrace, so perhaps the return sweep occurs before the triggers can reset).

I (sort of) “proved” my theory by nudging one of the offending triggers out of reach of the cursor’s path and, indeed, that one did not trigger during the retrace.

Conclusion (speculative, of course): There exist cursor re-scans (maybe call them retrace, after raster-scan technology) that are so fast they’re invisible, and they re-fire any triggers in their path.

Cheers,
–Bob

@I wrote:

In the attached score, triggers #172 and #173 fire when cursor #1 reverses direction at the end of its curve (when that cursor is nowhere near those triggers). They do also fire at the correct time (when cursor #1 strikes them).

Score and messages-log attached.

Best
–Bob

OSX 10.6.7
WinXP/sp3
IanniX 0.8.2

[Anonymous]

Hi Bob!

I discover this bug a few days ago. It’s a very critical bug (because even if we have bugs with GUI, the core must work!). I’m currently working on this bug.

[Anonymous]

Thanks Guillaume!

[Anonymous]

Hi Guillaume, in your 0.8.21 release notes, does this one:

“major cursor bug fix (with pattern like 1 -1)“

refer to the current forum thread, or to something else?

Thanks
–Bob

@Guillaume wrote:

I discover this bug a few days ago. It’s a very critical bug (because even if we have bugs with GUI, the core must work!). I’m currently working on this bug.

[Anonymous]

Yes!

[Anonymous]

Sorry to say, Guillaume, but I’m still having this bug. Tested on two platforms, XP/SP3 and OSX 10.6.7 (Iannix 0.8.21).

Thanks,
–Bob

[Anonymous]

Okayyy, I didn’t test with your scores, but I will !

[Anonymous]

Thanks Guillaume.

[Anonymous]

Hi Guillaume!
@Guillaume wrote:

Okayyy, I didn’t test with your scores, but I will !

Have you been able to experience this anomaly? I want to expand upon this score, but am awaiting your results before going ahead.

Please let me know if I can offer any assistance or further information about this.

Cheers,
–Bob

[Anonymous]

Iannix 0.8.22: Just wanted to let you know this issue still exists.

Cheers,
–Bob

(score attached)

[Author]

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