Message #1367

From: Andrey <andreyastrelin@yahoo.com>
Subject: Re: [MC4D] MS5D v0.1
Date: Fri, 28 Jan 2011 00:09:37 -0000

Roice,
thank you for the feedback! I’ll check and fix what you mentioned.

As for the 4D rotation, the reason is that there is no equivalent to it in MC4D. When you shift-move camera in MC4D, it is like pan/tilt of camera (changing of camera direction while position is unchanged). In MS5D (and in the common 4D viewer with "3D retina") we need alternative rotation around the point of view: when 4D camera goes around this point and 4D spectator looks at the same 4D object from the different side. I’ve desided that we need such navigation feature and that it’s more useful than 4D pan/tilt. May be I’m wrong. May be it will be better to move this rotation to Alt key and use Shift for 4D pan.

Andrey

— In 4D_Cubing@yahoogroups.com, Roice Nelson <roice3@…> wrote:
>
> Very nice :)
>
> My number one feature request is of course animation. I feel that will give
> a huge benefit in understanding the puzzle.
>
> The other main feedback I have for now is that twisting feels backwards.
> When I click 3 stickers in succession, say A,B,C I would expect the end
> result to be a 3-cycle of those stickers that went A->B->C->A (if I’m
> clicking in a clockwise fashion, I’d like the stickers to rotate
> clockwise). Instead, you’ve chosen to make it A<-B<-C<-A. I was curious
> the reason for this.
>
> Minor issues I ran into with my brief interaction:
> - when you have some faces turned off and make a twist, there is
> a highlighting problem (the stickers that should be highlighted are not
> refreshed). Clicking one of the face checkboxes forces a refresh, so that
> is a workaround.
> - crash when clicking "show pieces", though you did say this wasn’t tested.
>
> I am finding the 4D shift-left rotations strangely unintuitive (they don’t
> seem to act like MC4D), but I will have to think on why this is the case
> more before I can give any useful feedback.
>
> Awesome as usual Andrey! You’re a puzzle producing machine!
> Roice
>
>
> On Thu, Jan 27, 2011 at 3:10 PM, Andrey <andreyastrelin@…> wrote:
>
> > http://games.groups.yahoo.com/group/4D_Cubing/files/MC7D/
> >
> > No macros, no animation, no recentering, log files not tested… only
> > navigation in S4 and twists are ready.
> >
> > Simplex is rendered by sequence of 3 central projections:
> > - stereographic projection to 4D
> > - perspective projection of 4D to 3D (4D camera)
> > - perspective projection of 3D to the screen. (3D camera)
> >
> > Navigation:
> > Left button - rotation of 3D camera around the center
> > Shift-Left button - rotation of 4D camera in X-W and Y-W directions
> > Shift-Right button (Up/Down) - rotation of 4D camera in Z-W direction
> > Right button (Up/Down) - slide of 5D camera in W direction. It is the only
> > way to change center of the model view.
> > Ctrl-Left button - Zoom in 3D (Up/Down) and in 4D (Left/Right)
> >
> > Twists:
> > 3-click model is implemented: if you have cell ABCDE (corners are named)
> > and click three corner stickers ("5C"), say, A,C,D, then cell will twist to
> > the CBDAE orientation.
> > If you click 4C stickers adjacent to the same corner, e.g. AB, AC, AE, then
> > block centered in the vertex A will twist from BCDEF position to CEDBF.
> > Right click in the sticker shows all stickers of the piece. Color filters
> > not tested.
> >
> > I was lucky to solve puzzle 2/5 scrambled by one twist! But it was
> > difficult :)
> >
> > Good luck!
> > Andrey
> >
> >
> >
> >
> >
> > ————————————
> >
> > Yahoo! Groups Links
> >
> >
> >
> >
>