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Unicode signs vs lines "saving clockcycles"

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  Unicode signs vs lines "saving clockcycles" Jonas Thörnvall <jonas.thornvall@gmail.com> - 2020-07-18 05:48 -0700
    Re: Unicode signs vs lines "saving clockcycles" "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2020-07-18 15:48 +0200
      Re: Unicode signs vs lines "saving clockcycles" Jonas Thörnvall <jonas.thornvall@gmail.com> - 2020-07-18 07:30 -0700
        Re: Unicode signs vs lines "saving clockcycles" luserdroog <luser.droog@gmail.com> - 2020-07-18 11:43 -0700
          Re: Unicode signs vs lines "saving clockcycles" "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2020-07-18 23:52 +0200
            Re: Unicode signs vs lines "saving clockcycles" Jonas Thörnvall <jonas.thornvall@gmail.com> - 2020-07-18 15:32 -0700
              Re: Unicode signs vs lines "saving clockcycles" "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2020-07-19 16:49 +0200
                Re: Unicode signs vs lines "saving clockcycles" Jonas Thörnvall <jonas.thornvall@gmail.com> - 2020-07-19 08:57 -0700
                  Re: Unicode signs vs lines "saving clockcycles" Jonas Thörnvall <jonas.thornvall@gmail.com> - 2020-07-19 08:59 -0700
                    Re: Unicode signs vs lines "saving clockcycles" "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2020-07-19 23:17 +0200
                      Re: Unicode signs vs lines "saving clockcycles" Jonas Thörnvall <jonas.thornvall@gmail.com> - 2020-07-19 15:30 -0700
                        Re: Unicode signs vs lines "saving clockcycles" luserdroog <luser.droog@gmail.com> - 2020-07-19 19:34 -0700
                        Re: Unicode signs vs lines "saving clockcycles" Arno Welzel <usenet@arnowelzel.de> - 2020-07-20 10:05 +0200
                  Re: Unicode signs vs lines "saving clockcycles" "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2020-07-19 23:07 +0200
        Re: Unicode signs vs lines "saving clockcycles" "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2020-07-18 23:49 +0200

#38518 — Unicode signs vs lines "saving clockcycles"

The unicode set have a bar fence symbole basicly square bar, so to do a full sheet page you need plot many for a bar row. How does it compare clockwise to make 5 lines?


I guess the unicode symbol is somehow plotted like a scaleable bitmap?
I would think using lines more effective but i am not sure? 

JT

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#38521

=?UTF-8?Q?Jonas_Th=C3=B6rnvall?= <jonas.thornvall@gmail.com> wrote on 18
Jul 2020 in comp.lang.javascript: 

> The unicode set have a bar fence symbole

Dus it? What unicode?

> basicly square bar, 

What do you mean?

> so to do a full sheet page 

What is that?

> you need plot many for a bar row. 

Do you?

> How does it compare clockwise to make 5 lines? 

What about anti-clockwise?

> I guess the unicode symbol is somehow plotted like a scaleable bitmap?

Your guess is not as good ad mine, it stands to reason.

> I would think using lines more effective but i am not sure? 

Define "more effective". 
What are "lines more effective"?
Why a question mark, this seems to be a statement.

=======

Please, Jonas, we can only help you if you ask a sensible question,
and not have us guessing what you mean.

=======

Unicoode is just a code number, the character itself, 
the symbol, depende on the character-map of the used font. 
<https://en.wikipedia.org/wiki/Unicode_font>

It could be true-type 
<https://en.wikipedia.org/wiki/TrueType>.

You can fake any character by using 
[1] an image,
[2] a CSS-description or 
[3] a svg.

CSS and SVG can be made dynamiic on hoder or onclick.










-- 
Evertjan.
The Netherlands.
(Please change the x'es to dots in my emailaddress)

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#38522

Den lördag 18 juli 2020 kl. 15:49:41 UTC+2 skrev Evertjan.:
> =?UTF-8?Q?Jonas_Th=C3=B6rnvall?= <jonas.thornvall@gmail.com> wrote on 18
> Jul 2020 in comp.lang.javascript: 
> 
> > The unicode set have a bar fence symbole
> 
> Dus it? What unicode?
> 
> > basicly square bar, 
> 
> What do you mean?
> 
> > so to do a full sheet page 
> 
> What is that?
> 
> > you need plot many for a bar row. 
> 
> Do you?
> 
> > How does it compare clockwise to make 5 lines? 
> 
> What about anti-clockwise?
> 
> > I guess the unicode symbol is somehow plotted like a scaleable bitmap?
> 
> Your guess is not as good ad mine, it stands to reason.
> 
> > I would think using lines more effective but i am not sure? 
> 
> Define "more effective". 
> What are "lines more effective"?
> Why a question mark, this seems to be a statement.
> 
> =======
> 
> Please, Jonas, we can only help you if you ask a sensible question,
> and not have us guessing what you mean.
> 
> =======
> 
> Unicoode is just a code number, the character itself, 
> the symbol, depende on the character-map of the used font. 
> <https://en.wikipedia.org/wiki/Unicode_font>
> 
> It could be true-type 
> <https://en.wikipedia.org/wiki/TrueType>.
> 
> You can fake any character by using 
> [1] an image,
> [2] a CSS-description or 
> [3] a svg.
> 
> CSS and SVG can be made dynamiic on hoder or onclick.
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> -- 
> Evertjan.
> The Netherlands.
> (Please change the x'es to dots in my emailaddress)

Well there is a unicode "character/symbol set for canvas", i just wonder is i should draw the lines or use the bar character. Which would be most wise performance wise...

No need to be upset this just about music notation "music sheets" no need to get upset, noone going to lock you up Evertjan, even if it may not seem out of question.

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#38529

On Saturday, July 18, 2020 at 9:30:46 AM UTC-5, Jonas Thörnvall wrote:

> Well there is a unicode "character/symbol set for canvas", i just wonder is i should draw the lines or use the bar character. Which would be most wise performance wise...
> 
> No need to be upset this just about music notation "music sheets" no need to get upset, noone going to lock you up Evertjan, even if it may not seem out of question.

Drawing lines is almost certainly faster than setting text in Canvas.
The glyphs in modern fonts are stored as line- and curve- drawing commands 
so it invokes the same line drawing machinery either way. Glyphs will
likely be cached so setting the same character will speed up after the
first one is rendered. But it's still invoking more logic than just
drawing the lines directly.

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#38537

luserdroog <luser.droog@gmail.com> wrote on 18 Jul 2020 in 
comp.lang.javascript:

> Drawing lines is almost certainly faster than setting text in Canvas.
> The glyphs in modern fonts are stored as line- and curve- drawing commands 
> so it invokes the same line drawing machinery either way. Glyphs will
> likely be cached so setting the same character will speed up after the
> first one is rendered. But it's still invoking more logic than just
> drawing the lines directly.

Since they are ment to be seen and interpreted by someone, 
as I presume, the number of cpu-clock-cycles seems unimportant.

-- 
Evertjan.
The Netherlands.
(Please change the x'es to dots in my emailaddress)

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#38538

Den lördag 18 juli 2020 kl. 23:52:47 UTC+2 skrev Evertjan.:
> luserdroog <luser.droog@gmail.com> wrote on 18 Jul 2020 in 
> comp.lang.javascript:
> 
> > Drawing lines is almost certainly faster than setting text in Canvas.
> > The glyphs in modern fonts are stored as line- and curve- drawing commands 
> > so it invokes the same line drawing machinery either way. Glyphs will
> > likely be cached so setting the same character will speed up after the
> > first one is rendered. But it's still invoking more logic than just
> > drawing the lines directly.
> 
> Since they are ment to be seen and interpreted by someone, 
> as I presume, the number of cpu-clock-cycles seems unimportant.
> 
> -- 
> Evertjan.
> The Netherlands.
> (Please change the x'es to dots in my emailaddress)

No evertjan i will write out notes in realtime sof every 5 bars or so the sheet if full and screen have to be updated with a new sheet.

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#38545

=?UTF-8?Q?Jonas_Th=C3=B6rnvall?= <jonas.thornvall@gmail.com> wrote on 19
Jul 2020 in comp.lang.javascript: 

>> Since they are ment to be seen and interpreted by someone, 
>> as I presume, the number of cpu-clock-cycles seems unimportant.
>> 
> No evertjan i will write out notes in realtime sof every 5 bars or so
> the sheet if full and screen have to be updated with a new sheet. 

Yes, and since the barrs have to be able to be seen by someone, [otherwise 
why produce them in the first place,] that minimal viewing surely is a large 
multiple of the time needed to show a picture, a svh, a css stylized 
element.

So optimalisation is not in any way efficient.

-- 
Evertjan.
The Netherlands.
(Please change the x'es to dots in my emailaddress)

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#38547

Den söndag 19 juli 2020 kl. 16:49:22 UTC+2 skrev Evertjan.:
> =?UTF-8?Q?Jonas_Th=C3=B6rnvall?= <jonas.thornvall@gmail.com> wrote on 19
> Jul 2020 in comp.lang.javascript: 
> 
> >> Since they are ment to be seen and interpreted by someone, 
> >> as I presume, the number of cpu-clock-cycles seems unimportant.
> >> 
> > No evertjan i will write out notes in realtime sof every 5 bars or so
> > the sheet if full and screen have to be updated with a new sheet. 
> 
> Yes, and since the barrs have to be able to be seen by someone, [otherwise 
> why produce them in the first place,] that minimal viewing surely is a large 
> multiple of the time needed to show a picture, a svh, a css stylized 
> element.
> 
> So optimalisation is not in any way efficient.
> 
> -- 
> Evertjan.
> The Netherlands.
> (Please change the x'es to dots in my emailaddress)

You say writing out a full picture for every 5 bars eveny amount of x seconds is faster then render the characterset or drawlines?

I feel hesitant.

JT

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#38548

Den söndag 19 juli 2020 kl. 17:57:45 UTC+2 skrev Jonas Thörnvall:
> Den söndag 19 juli 2020 kl. 16:49:22 UTC+2 skrev Evertjan.:
> > =?UTF-8?Q?Jonas_Th=C3=B6rnvall?= <jonas.thornvall@gmail.com> wrote on 19
> > Jul 2020 in comp.lang.javascript: 
> > 
> > >> Since they are ment to be seen and interpreted by someone, 
> > >> as I presume, the number of cpu-clock-cycles seems unimportant.
> > >> 
> > > No evertjan i will write out notes in realtime sof every 5 bars or so
> > > the sheet if full and screen have to be updated with a new sheet. 
> > 
> > Yes, and since the barrs have to be able to be seen by someone, [otherwise 
> > why produce them in the first place,] that minimal viewing surely is a large 
> > multiple of the time needed to show a picture, a svh, a css stylized 
> > element.
> > 
> > So optimalisation is not in any way efficient.
> > 
> > -- 
> > Evertjan.
> > The Netherlands.
> > (Please change the x'es to dots in my emailaddress)
> 
> You say writing out a full picture for every 5 bars eveny amount of x seconds is faster then render the characterset or drawlines?
> 
> I feel hesitant.
> 
> JT

I mean wasn't there a reason sprite was used?
These unicode thingies is basicly sprites.

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#38555

<jonas.thornvall@gmail.com> wrote on 19 Jul 2020 in comp.lang.javascript:

> I mean wasn't there a reason sprite was used?

Perhaps they needed a Coca-Cola brand drink?

> These unicode thingies is basicly

'Basicly' is basically not an English word.

> sprites.

Not so, unicode is a numbered naming convention.


-- 
Evertjan.
The Netherlands.
(Please change the x'es to dots in my emailaddress)

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#38556

Den söndag 19 juli 2020 kl. 23:17:52 UTC+2 skrev Evertjan.:
> <jonas.thornvall@gmail.com> wrote on 19 Jul 2020 in comp.lang.javascript:
> 
> > I mean wasn't there a reason sprite was used?
> 
> Perhaps they needed a Coca-Cola brand drink?
> 
> > These unicode thingies is basicly
> 
> 'Basicly' is basically not an English word.
> 
> > sprites.
> 
> Not so, unicode is a numbered naming convention.
> 
> 
> -- 
> Evertjan.
> The Netherlands.
> (Please change the x'es to dots in my emailaddress)

Err the things written on the canvas are, tiles, sprites.

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#38557

On Sunday, July 19, 2020 at 5:30:09 PM UTC-5, Jonas Thörnvall wrote:
> Den söndag 19 juli 2020 kl. 23:17:52 UTC+2 skrev Evertjan.:
> > <jonas.thornvall@gmail.com> wrote on 19 Jul 2020 in comp.lang.javascript:
> > 
> > > I mean wasn't there a reason sprite was used?
> > 
> > Perhaps they needed a Coca-Cola brand drink?
> > 
> > > These unicode thingies is basicly
> > 
> > 'Basicly' is basically not an English word.
> > 
> > > sprites.
> > 
> > Not so, unicode is a numbered naming convention.
> > 
> > 
> > -- 
> > Evertjan.
> > The Netherlands.
> > (Please change the x'es to dots in my emailaddress)
> 
> Err the things written on the canvas are, tiles, sprites.

I think 'glyphs' is the more correct term here. After the outline
of the glyph is rendered to a bitmap, that bitmap gets stored in
the font cache. Writing from the font cache to the canvas should
be pretty quick because it's just a bitblt. 

So, yes, I think your intuition is right, here. Drawing characters 
to the canvas should be plenty fast. I'd probably use line drawing 
for the staff and measure lines, but for noteheads and accidentals 
then the music glyphs from a music font will probably be fine.
Until you want to beam together several notes, that is. Then you'll
need to be able to tweak the lengths of the stems to get them to
line up.

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#38558

Jonas Thörnvall:

> Err the things written on the canvas are, tiles, sprites.

No. In the context of computer graphis a "sprite" is a bitmap which is
*indpendent* from the screen content and can be moved around freely.

Also see: <https://en.wikipedia.org/wiki/Sprite_(computer_graphics)>

One example for the use nowadays is the mouse cursor which is often
implemented as a sprite.

But "things written on the canvas" is just like paintint something on
it. And this will become permanent - a canvas is just a bitmap on which
you can paint. You can't write a unicode symbol to a canvas and then
move it around like a sprite without destroying the background.


-- 
Arno Welzel
https://arnowelzel.de

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#38553

=?UTF-8?Q?Jonas_Th=C3=B6rnvall?= <jonas.thornvall@gmail.com> wrote on 19
Jul 2020 in comp.lang.javascript: 

>> Yes, and since the barrs have to be able to be seen by someone,
>> [otherwis 
> e 
>> why produce them in the first place,] that minimal viewing surely is a
>> la 
> rge 
>> multiple of the time needed to show a picture, a svh, a css stylized 
>> element.
>> 
>> So optimalisation is not in any way efficient.
>> 
>> -- 
>> Evertjan.
>> The Netherlands.
>> (Please change the x'es to dots in my emailaddress)
> 
> You say writing out a full picture for every 5 bars eveny amount of x
> seconds is faster then render the characterset or drawlines? 

No, where do you read that.

> I feel hesitant.

Hesitant is doubtful to do something. 

You could measure the results, 
and compare them to the estimated actual time neccesary on screeen.



-- 
Evertjan.
The Netherlands.
(Please change the x'es to dots in my emailaddress)

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#38536

=?UTF-8?Q?Jonas_Th=C3=B6rnvall?= <jonas.thornvall@gmail.com> wrote on 18
Jul 2020 in comp.lang.javascript: 

> Well there is a unicode "character/symbol set for canvas",

Is there?

> i just wonder is i should draw the lines or use the bar character. 

According to an authority?

> Which would be most wise performance wise... 

Wise according to whom ?

> No need to be upset

Is there ever a *need* to be upset?

I don't think so, being upset, does that help you?

> this just about music notation "music sheets" 

Is it?

> no need to get upset, 

You are repeating yourself.

> noone going to lock you up Evertjan, 

How would you know? 

You would have to know everyone,
and that would not be very efficient, would it?.

> even if it may not seem out of question. 

It might be.

Are you starting a joke, Jonas?


-- 
Evertjan.
The Netherlands.
(Please change the x'es to dots in my emailaddress)

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