[PD] Drawing a sine function dynamically in Gem

[Alexandros Drymonitis]

It's a bit strange but Pd can't create [GEMglVertex] or [gemvertexbuffer].
In the browser I found [gemframebuffer] but not the vertex one.
[GEMglBegin] and [GEMglEnd] are being created, no prob.
I'm using the latest Pd...


On Wed, Apr 3, 2013 at 12:59 PM, Cyrille Henry <ch at chnry.net> wrote:

> hello,
>
> you have lot's of solution to draw a sinus curve in Gem.
>
> the easiest would be to use scopeXYZ, but you'll have to do the sin in
> audio signal.
>
> the most efficient is to use gemvertexbuffer to draw a line between points
> specified in table.
>
> the fastest to code is to use repeat/separator/curve 2 in order to draw
> many lines
>
> you can also do like in openGL : using GEMglBegin, GEMglVextex (many of
> them thanks to an iterative loop), and GEMglEnd
>
> you can also do that in shader, but that would be to much complexity for
> this.
>
> and you can certainly find other way to do that, but i think i cover the
> most used.
> cheers
> c
>
>
> Le 02/04/2013 23:18, Alexandros Drymonitis a écrit :
>
>> I want to build this visual http://processing.org/**learning/trig/<http://processing.org/learning/trig/>in Pd, but I want the sine curve to be drawn dynamically with every circle
>> spin. It seems quite hard though.
>>
>> I don't know which object would be best. I tried either [curve] but the
>> parameters are way too many and I'm not sure if precision is really
>> possible. Then I tried [square 0.008] in combination with [repeat] but also
>> doesn't work.
>> Anyone knows how to do this?
>>
>>
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