Re: Is there a way to have Physics affect lights and cameras? 2004-01-26 - By Andrew Turner
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Hi Claudia -
Ok, it's working fine when I use track as you suggested.
My process for this was to first create 7 cone lights with tracking enabled
but no name data to track; then I created 7 polygons which I spread out and
named 1 thru 7, and then entered names 1 thru 7 in the lights' tracking
field.
I added a point force and voila!
http://www.turnerdesign.net/force/sillylights2.mov
All tracking data (x, y, z, rotation) was enabled. I used polygons to get
more rotation upon collision.
Andrew
From: "ccoles_avengers" <ccoles_shado@(protected)>
Reply-To: Carrara@(protected)
Date: Mon, 26 Jan 2004 04:31:32 -0000
To: Carrara@(protected)
Subject: [Carrara] Re: Is there a way to have Physics affect lights and
cameras?
Hi Andrew,
Hmmm...it's funny that you didn't see any grouping. I checked on the
CAR files again that I uploaded and they have both the light and
camera grouped with a sphere.
But one thing that I notice when working with the Physics Engine is
that it likes as much non-PE information set up FIRST *BEFORE* you
assign a physics motion to the objects or a force to your scene. That
is, it seems to like object distance, transformations, etc. set
up before the PE is applied. I notice that whenever I did this
*after* the fact and tried to move things around (at frame 0), things
would get
weird and it was hard to recreate the PE I just had, no matter how much
I liked the previous calculations. Even UNDOING didn't restore
certain features. That's why I suggest this approach.
Question: Are you trying to simply apply physics to lights and that's
why you are using a sphere: to do an invisible piggyback on top of
it? I think that is what I am deciphering from your movie clip
mentioned in your other message. If so, then simply using the tracking
with everything enabled should work. Then turning the sphere
invisible should do the final trick.
I have also duplicated three Sphere-tracking-Lights and didn't find
any slowdown in performance on my computer. And there was no problems
with the PE at all: after changing the object name in the light track
modifier menu box to match the new duplicated sphere names, everything
worked fine.
Please let me know what other things you find out.
In the meantime, I'm doing some tests right now and will plan to
update my website with any findings. I'll also announce when I have
things updated.
http://users.rcn.com/ccoles/Carrara%20Studio%203/
[Main folder]
Cheers.
Claudia
"Selocic"
(an newbie)
--- In Carrara@(protected), Andrew Turner <turner410@(protected)> wrote:
> Hi -
>
> OK, downloaded those files... yes! Tracking works. However, I saw
nothing
> grouped there- neither the camera nor light were grouped with the
sphere...
>
> However, once I set the light (or camera) to track the sphere, THEN
grouped
> it, it worked - for ONE group.
>
> When I tried to copy/paste or duplicate the group, I got weird results -
> each, I think, because the light (which I used) only tracked the
ORIGINAL
> object named in the tracking dialogue, not its duplicate.
>
> I will set up a scene with 12 distinct objects to track and try it
that way,
> and it WILL look cool but it will take a lot longer than if the
light and
> the object it tracked automatically renamed themselves appropriately...
>
> Better still would be if I could just group the darn things without
setting
> tracking...
>
> Thanks,
> Andrew
>
>
>
> From: "ccoles_avengers" <ccoles_shado@(protected)>
> Reply-To: Carrara@(protected)
> Date: Sun, 25 Jan 2004 22:07:12 -0000
> To: Carrara@(protected)
> Subject: [Carrara] Re: Is there a way to have Physics affect lights and
> cameras?
>
>
> Hi Andrew,
>
> I just successfully completed doing a Light following a Sphere with PE
> and a Camera following a Sphere with PE (actually, they look kinda
> cool). Both the light and camera were *grouped* with the sphere. If
> I am understanding you correctly, yes, this should be doable [because
> I just did it ;)]. But there may be another problem that you are
> running into. Have you checked out the Physics Engine Tip sheet that
> is posted on the Group file site? Perhaps there may be an answer
> there, such as your graphic performance setting may be set too high.
> I found that lowering it just one notch corrected a myriad of problems
> with my CS3 [and AMAPI] program crashing.
>
> You can check the PE tip sheet out at:
>
>
http://groups.yahoo.com/group/Carrara/files/Physics%20Engine%20Animations/
>
> In the meantime, I am in the midst of uploading the actual CAR files
> to my site. If you want, check back later to download them and then
> let me know how things go.
>
> http://users.rcn.com/ccoles/Carrara%20Studio%203/
> [Main folder]
>
> Claudia
> "Selocic"
> (a newbie)
>
>
>
>
>
>
> --- In Carrara@(protected), "Andrew Turner" <turner410@(protected)> wrote:
> > I can't seem to figure this one out...
> >
> > The physics don't seem to affect lights and cameras, and when I
> > try grouping a camera with a sphere, or whatever, Carrara
> > crashes...
> >
> > We SHOULD be able to do this! (If we can't) - lights and cameras
> > have a selector for Physics under motion and if we can't do this
> > now I sure hope there's a workaround or plugin on the way!
> >
> > Andrew
>
>
>
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