hello,
you just have to put the gemhead in the gemlist befor the glBegin. see attachement.
cheers c
Le 10/04/2013 22:11, Roman Haefeli a écrit :
On Mit, 2013-04-03 at 11:59 +0200, Cyrille Henry wrote:
hello,
you have lot's of solution to draw a sinus curve in Gem.
[...]
you can also do like in openGL : using GEMglBegin, GEMglVextex (many of them thanks to an iterative loop), and GEMglEnd
I'm interested in understanding that approach. So far I was able to draw a simple line:
[gemhead] | [GEMglBegin GL_LINES] | [GEMglVertex2d -2 -2] | [GEMglVertex2d 2 2] | [GEMglEnd]
But how are you creating an iterative loop out of this? I tried after GEMglBegin:
[t a b a] | |
| [20(
| |
| [until]
| |
| [gemlist ] | | <- put the two [GEMglVertex2d] here. | [GEMglEnd]However, this causes an error on every frame: GL: invalid operation
What is the correct way to do this?
Roman
Le 02/04/2013 23:18, Alexandros Drymonitis a écrit :
I want to build this visual 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?
Pd-list@iem.at mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list
Pd-list@iem.at mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list
Pd-list@iem.at mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list