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_2...@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 <c...@chnry.net> > To: Ed Kelly <morph_2...@yahoo.co.uk> > Cc: Claude Heiland-Allen <claudiusmaxi...@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-Allen<claudiusmaxi...@goto10.org> > > To: Ed Kelly<morph_2...@yahoo.co.uk> > > Cc: PD List<pd-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 > >
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