[Cuis-dev] Best way to draw arcs

[Jon Hylands]

I did yet more testing - it turns out it is mainly the black background
morph. This is the drawOn: method for that Morph (which inherits from
PlacedMorph):

drawOn: aCanvas
  aCanvas
    strokeWidth: 1
    color: Color black
    fillColor: Color black do: [:engine |
      engine rectangleMinX: -500 maxX: 500 minY: -300 maxY: 300].

I turned off the code that adds the gauge subMorphs.

So yeah - opening a single morph, that draws a black rectangle 1000 x 600
pixels, gives me about 2 FPS while I'm dragging it around and interacting
with the morph controls.

Am I missing something?

- Jon


On Sat, 4 Mar 2023 at 13:05, Jon Hylands <jhylands at gmail.com> wrote:

> I did a little test - turned off all the stepping (wantsSteps returns
> false for all of them now).
>
> With that little dashboard opened, I still get about 1 FPS dragging it
> around. In the final version I won't be dragging it around, but if all
> those fancy graphics come at a cost that makes them unusable, I'm probably
> going to have to go back to regular squeak (where things don't look nearly
> as nice, but dragging the fully live dashboard still happens at 30+ FPS).
>
> - Jon
>
>
> On Sat, 4 Mar 2023 at 10:00, Jon Hylands <jhylands at gmail.com> wrote:
>
>> One of the other things I've noticed is that the system in general
>> becomes almost non-responsive while my dashboard morph is open. Even
>> opening one of the gauge morphs by themselves, they are painful to interact
>> with. I implemented the same dashboard in normal Squeak before I started on
>> this one, and I can drag it around while it is live with zero lag.
>>
>> I've got #step running in all three gauges, with a #stepTime of 100, and
>> I basically either ask the morph to redraw itself (compass and altimeter),
>> or just rotate the needle submorph (airspeed).
>>
>> I'm running Xubuntu 20 on an i7-3770K @ 3.5 GHz, with 32 GB of RAM and a
>> GeForce 1060 graphics card.
>>
>> - Jon
>>
>>
>> On Sat, 4 Mar 2023 at 09:14, Hilaire Fernandes via Cuis-dev <
>> cuis-dev at lists.cuis.st> wrote:
>>
>>> Hum, it seems there is an issue when yAxisPointsUp is enabled. I
>>> observe the same problem on my example.
>>>
>>> Thanks
>>>
>>> Hilaire
>>> Le 04/03/2023 à 13:40, Jon Hylands via Cuis-dev a écrit :
>>>
>>> I should add, the coordinate system of the morph is set to origin at the
>>> center of the gauge, and yAxisPointsUp is enabled.
>>>
>>> --
>>> GNU Dr. Geohttp://drgeo.euhttp://blog.drgeo.eu
>>>
>>> --
>>> Cuis-dev mailing list
>>> Cuis-dev at lists.cuis.st
>>> https://lists.cuis.st/mailman/listinfo/cuis-dev
>>>
>>
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