Hi Ed!
Thanks for sharing this patch, i remember when you did show this project. Here is missing [0_maker_1] abstraction in the package. Cheers, Cristiano
On Wed, Sep 1, 2010 at 8:06 PM, Ed Kelly morph_2016@yahoo.co.uk wrote:
Yes, that's what I meant to say. Radians is only for the [tan], but it's quite useful elsewhere. I have been feeling guilty all day, for the archives being wrong-headed :) from me.
I have a nice trig patch now :) maybe I should submit a good trig patch to GEM documentation. Perhaps we could help - since many artists struggle with this (my math teacher at school was really intimidating!)
But, I have noticed a sinusoidal error with the graphics in my patch. So, here is the real thing!
It's my notation system. I was trying to keep it a secret until it is entirely ready, but open source projects demand open-source solutions, so here's the current prototype. Notice that when you move the second note up and down, there is a sinusoidal error in the [shearYX] -ed half-beam sheared rectangles. Is there any way to calculate this and compensate for it? I must have missed something...
...Classical players can be quite particular about such issues! I want it to look good.
PS - For the Brazilians I showed this to, I love you and will deliver this soon.
X Ed Metastudio 3 for Pure Data - Free download at: http://sharktracks.co.uk/puredata
----- Original Message ---- From: cyrille henry ch@chnry.net To: Ed Kelly morph_2016@yahoo.co.uk Cc: Claude Heiland-Allen claudiusmaximus@goto10.org; PD List < pd-list@iem.at> Sent: Wed, 1 September, 2010 20:44:56 Subject: Re: [PD] GEM Shear / angle relationship
Le 01/09/2010 10:37, Ed Kelly a écrit :
Thanks for unlocking my broken trig head.
This should really be in the documentation. The angle is in radians.
Patch
enclosed...
no, the angle is not in radian. in fact, shear is a non rotational space distortion, there is no angle...
shear distord 1 direction in relation to the coordinate on a 2nd direction. As Claude explain, you can calculate an angle from this distortion, based on 2 dimension. The tan object is in radian. that's the only thing in radian.
Cyrille
Best, Ed
Metastudio 3 for Pure Data - Free download at: http://sharktracks.co.uk/puredata
----- Original Message ---- From: Claude Heiland-Allenclaudiusmaximus@goto10.org To: Ed Kellymorph_2016@yahoo.co.uk Cc: PD Listpd-list@iem.at Sent: Wed, 1 September, 2010 1:09:43 Subject: Re: [PD] GEM Shear / angle relationship
Hi Ed,
On 31/08/10 15:31, Ed Kelly wrote:
Can anyone tell me how to calculate the 'shear' value (when using
[shearYX] in
Gem) from an angle (degrees or radians, I don't mind)?
This is just a guess, for one direction of shear in 2D space:
shear = tan(angle) (the angle marked ** in the ascii diagram below)
| __________ |**/ / | / / |/_________/
(because tan(0) = 0, tan(45deg) = 1, tan(90deg) = inf)
Otherwise try drawing triangles and doing some trigonometry (in a right-angle triangle: sin=opposite/diagonal cos=adjacent/diagonal tan=opposite/adjacent )
Claude -- http://claudiusmaximus.goto10.org
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