Zitiere Nicholas Colvin colvin@dvida.net:
I have a couple of questions about the tritest.pd examples. You mentioned many triangles, but I only get one triangle, is this correct?
i guess it is correct for you, but i got thousands of them (that is the idea of the patch), you can also change the number of triangles with the number-box hanging around.
are you using and old version of gem (non-cvs ?). then the example will most probably not work (see below)
Also, why are there multiple [gemhead]s? I wasn't aware of any use for this, and I'm really trying hard to understand GEM. I've read the docs through a few times, and looked at online tuts a bunch, but haven't seen anything about multiple gemheads.
multiple gemheads are quite normal, if you have several independent objects... however, i guess you mean something different, rather "multiple gemheads in one gemchain" or similar. i'll try to explain: when rendering, [gemhead] works somehow like a special "Gem-metro" that sends a "render"-message to the connected gem-objects (who distribute this render-message further) each rendering frame (in double-buffered mode) however, you can force a [gemhead] to send out the "render"-message by banging it (very useful in single-buffered mode). In version prior to 0.888 (and 0.87-cvs) the "render"-message was somewhat hidden and did not use pd's messaging system. however this has changed (which is quite cool, as you can now use "dynamic" render-chains). now, each frame the first [gemhead] outputs the render_message, which is converted to a number of bangs (using [until]), which trigger the second [gemhead] which will then draw the triangles (a number of times each frame). however the second [gemhead] will also output the render_message once each frame (independently of the banging it gets from the first [gemhead]), so we will only use "4999" until-bangs to get 5000 triangles each frame.
the whole patch would have been easier using [repeat] from zexy (and i guess, a lot of other libraries...), but i wanted it to be plain pd/Gem.
mfg.asd.r IOhannes
hi,
i did not now until now that things like the tritest.pd constructs are possible. i was really surprised, i was not even thinking about the possibility of 2 gemheads in series to multiply the geos. are there any other interesting constructs which are not so obvious at the first glimpse iohannes ?
lg
e
rat@telecoma.net wrote:
hi,
i did not now until now that things like the tritest.pd constructs are possible. i was really surprised, i was not even thinking about the possibility of 2 gemheads in series to multiply the geos. are there any other interesting constructs which are not so obvious at the first glimpse iohannes ?
hmm... i guess it is quite obvious if you know of it. so i'm sorry that i have no real answer, although i guess, i know more "not so obvious" things which i wouldn't classify as such.
anyhow, for render-multiplication i would rather use somthing like "gemlist" | [t a a] | / | / [t a] | "gemlist"
but this would not work for 5000 objects....
mfg.as.dr IOhannes
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IOhannes zmoelnig -
rat＠telecoma.net -
zmoelnig＠iem.at