Re: [actionstep-core] Rotation

[thomas m. <tho...@gm...>]

sorry I wrote :

like if you rotate a square by 90=B0 and want its rotation point to be its
center you rotate it and then have to add half its width to its x position
you then get the desired behaviour


should have been : you have to add its whole width





On 9/1/06, thomas mery <tho...@gm...> wrote:
>
> I was thinking it should be possible to set a center point and compute th=
e
> new x and y based on the rotation angle, new x, new y , old x, old y
>
> without having to resort to a container clip
>
> like if you rotate a square by 90=B0 and want its rotation point to be it=
s
> center you rotate it and then have to add half its width to its x positio=
n
> you then get the desired behaviour
>
> I thought there was a formula to have it work with any angle and any
> rotation point
>
> I'll keep on looking for this but if someone knows what I mean and have
> it  handy ... :)
>
> maybe its basic stuff but trigonometry and I have to schedule a meeting
>
>
>
>
>
> On 9/1/06, Ray Chuan <rc...@gm...> wrote:
> >
> > What do you mean? Share!
> >
> > On 9/1/06, thomas mery <tho...@gm...> wrote:
> > > the good old method
> > >
> > > I thought about somethin more complex where the new center was
> > computed but
> > > this is way better :)
> > >
> > > thanks
> > >
> > >
> > > On 8/31/06, Ray Chuan <rc...@gm... > wrote:
> > > > Hi,
> > > > maybe you can attach it to another clip.
> > > >
> > > > Say you have a box w by h, which is originally at (x,y). You want
> > the
> > > > centre of rotation to be at (xc,yc). So, attach it to a clip:
> > > >
> > > > daddy_mc.createEmptyMovieClip("kid_mc",
> > > daddy_mc.getNextHigestDepth());
> > > > daddy_mc._x =3D x-xc;
> > > > daddy_mc._y =3D y-yc;
> > > > kid_mc._x =3D xc;
> > > > kid_mc._y =3D xc;
> > > >
> > > > Since the absolute coordinates of the attached clip takes into
> > account
> > > > the coordinates of the parent clip, kid clip appears at the point
> > (x,
> > > > y) but has rotation centre (xc, yc).
> > > >
> > > > To do this in ActionStep your movieclip heirarchy should look like
> > this:
> > > >
> > > > mcBounds
> > > > |- holder
> > > > |- daddy_mc
> > > > |- kid_mc
> > > >
> > > > On 8/31/06, thomas mery < tho...@gm... > wrote:
> > > > > by the way is there a method (im not that good with maths ...) to
> > shift
> > > the
> > > > > rotation center ? I know there probably is out there but
> > already  built
> > > in
> > > > > actionstep ?
> > > > >
> > > >
> > > >
> > >
> > >
> > -----------------------------------------------------------------------=
--
> > > Using Tomcat but need to do more? Need to support web services,
> > security?
> > > Get stuff done quickly with pre-integrated technology to make your jo=
b
> > > easier
> > > Download IBM WebSphere Application Server v.1.0.1 based on Apache
> > Geronimo
> > >
> > http://sel.as-us.falkag.net/sel?cmd=3Dlnk&kid=3D120709&bid=3D263057&dat=
=3D121642
> > >
> > > _______________________________________________
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> > > https://lists.sourceforge.net/lists/listinfo/actionstep-core
> > >
> > >
> > >
> >
> >
> > --
> > Cheers,
> > Ray Chuan
> >
> >
> > -----------------------------------------------------------------------=
--
> > Using Tomcat but need to do more? Need to support web services,
> > security?
> > Get stuff done quickly with pre-integrated technology to make your job
> > easier
> > Download IBM WebSphere Application Server v.1.0.1 based on Apache
> > Geronimo
> > http://sel.as-us.falkag.net/sel?cmd=3Dlnk&kid=3D120709&bid=3D263057&dat=
=3D121642
> >
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> >
>
>
>
> --
>
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>



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