[L2Ork-dev] Curious slowdown on a GOP array interaction

[Jonathan Wilkes]

On Wed, Jun 17, 2020 at 1:29 PM Ivica Ico Bukvic <ico at vt.edu> wrote:
>
> ... Curiously, as long as the array is not the top object, redraw is way faster. Even having a canvas that is on top of it in the gl_list (does not have to be above it visually, anywhere on the canvas),  makes things again super fast...

Another data point in favor of what I just wrote.

If we only ever change the path data/element attributes of *existing*
DOM elements, z-order isn't changed, relayout isn't
triggered, everything will just work.

-Jonathan

>
> On 6/17/2020 1:20 PM, Ivica Ico Bukvic wrote:
>
> So, slowdown is linked to the z-order of the object being manipulated. If it is all the way in the back, it is fast, in the front it is slow...
>
> On 6/17/2020 11:54 AM, Ivica Ico Bukvic wrote:
>
> Oh, and the last element on any type of a plot is not clickable in most cases regardless whether joc is enabled.
>
> On 6/17/2020 11:53 AM, Ivica Ico Bukvic wrote:
>
> So, the slowdown is not there on 0.14.7, so this is definitely a 0.46.2 and 0.47 issue, and moving things around the canvas definitely has an effect. To add to the list below, inside the bar graph the click has a right offset both on 0.14.7 and 0.46.2, so this is definitely a bug on our end. Also, clicking on plots inside a subpatch, yields spotty results (both on 0.46.2 and 0.14.7), where sometimes only a single click works (could be something I added inside the pd_canvas.js or pdgui.js, so it would be helpful to know if you have the same problem). Lastly, as pointed out in the issues tracker, subpatches do not retain their positions when closed and reopened.
>
> On 6/17/2020 11:42 AM, Ivica Ico Bukvic wrote:
>
> Try the attached patch and try moving the points inside the point-inv array. It works a lot slower and has a much higher cpu footprint than any other array in the patch. This is on 0.46.2. Might be worth trying it on 0.14.7 or 0.20 for comparison.
>
> Another couple of problems (as noted in issues I submitted last night):
>
> Properties is sometimes available in the popup and sometimes isn't inside the subpatch. We need to either make it work consistently or not. I have no idea why this is happening however.
> Clicking on objects while the subpatch is open is often impossible. glist_xtopixels and glist_ytopixels inside g_graph.c often shows that xval (which is I belive cursor position) shows some super large number (I think the largest either positive or negative float value), suggesting something is getting messed up inside backend somewhere along the way.
> We may consider simply enabling jump-on-click at all times, since other one is a pain to use and is not really useful.
>
> Best,
>
> Ico
>
> --
> Ivica Ico Bukvic, D.M.A.
> Director, Creativity + Innovation
> Institute for Creativity, Arts, and Technology
>
> Virginia Tech
> Creative Technologies in Music
> School of Performing Arts – 0141
> Blacksburg, VA 24061
> (540) 231-6139
> ico at vt.edu
>
> www.icat.vt.edu
> www.performingarts.vt.edu
> l2ork.icat.vt.edu
> ico.bukvic.net
>
> --
> Ivica Ico Bukvic, D.M.A.
> Director, Creativity + Innovation
> Institute for Creativity, Arts, and Technology
>
> Virginia Tech
> Creative Technologies in Music
> School of Performing Arts – 0141
> Blacksburg, VA 24061
> (540) 231-6139
> ico at vt.edu
>
> www.icat.vt.edu
> www.performingarts.vt.edu
> l2ork.icat.vt.edu
> ico.bukvic.net
>
> --
> Ivica Ico Bukvic, D.M.A.
> Director, Creativity + Innovation
> Institute for Creativity, Arts, and Technology
>
> Virginia Tech
> Creative Technologies in Music
> School of Performing Arts – 0141
> Blacksburg, VA 24061
> (540) 231-6139
> ico at vt.edu
>
> www.icat.vt.edu
> www.performingarts.vt.edu
> l2ork.icat.vt.edu
> ico.bukvic.net
>
> --
> Ivica Ico Bukvic, D.M.A.
> Director, Creativity + Innovation
> Institute for Creativity, Arts, and Technology
>
> Virginia Tech
> Creative Technologies in Music
> School of Performing Arts – 0141
> Blacksburg, VA 24061
> (540) 231-6139
> ico at vt.edu
>
> www.icat.vt.edu
> www.performingarts.vt.edu
> l2ork.icat.vt.edu
> ico.bukvic.net
>
> --
> Ivica Ico Bukvic, D.M.A.
> Director, Creativity + Innovation
> Institute for Creativity, Arts, and Technology
>
> Virginia Tech
> Creative Technologies in Music
> School of Performing Arts – 0141
> Blacksburg, VA 24061
> (540) 231-6139
> ico at vt.edu
>
> www.icat.vt.edu
> www.performingarts.vt.edu
> l2ork.icat.vt.edu
> ico.bukvic.net