alice-teacher Scene change in Alice 3.1.92

[reed-m]

I totally understand how to change the scene by moving the cameras around and using opacity, however I was wondering if there could be a way to totally change the background, like from grass to snow or inside to outside.  Apparently there isn't that option.  I've played around with it a lot and I can't figure out how to do this.  I don't have a book, we work with tutorials, demonstration and my knowledge after using Alice for a few years with my students.  We don't have a whole class on this, just 2 weeks in an introductory computer science class.  I have several preps and too many students in a computer class (35), so I don't have a tremendous amount of time to keep trying to find the answer.  That's why I turned to the Alice distribution list. I thought I remembered changing backgrounds in the past, but apparently I was wrong.  Thank you for your response.

Memory Reed
Business Education Teacher
FBLA Adviser
706-628-4278
reed-m at harris.k12.ga.us
________________________________________
From: alice-teachers-bounces+reed-m=harris.k12.ga.us at lists.andrew.cmu.edu [alice-teachers-bounces+reed-m=harris.k12.ga.us at lists.andrew.cmu.edu] on behalf of Leonel Morales [litomd at gmail.com]
Sent: Thursday, April 16, 2015 1:16 PM
To: Alice educators
Subject: Re: alice-teacher Scene change in Alice 3.1.92

Hi!

Here is a variation of the scene change that Michael provided. Instead
of taking the models down 5 to hide them the opacity is switched
between 0 and 1 to make the relevant objects appear.

Because no markers are needed when the opacity technique is used,
objects can be moving and keep moving while the scene is not showing.

I also observed the ground goes white after the first run as Michael pointed.

Attached the .a3p file.

All the best,

Leonel

2015-04-15 10:36 GMT-06:00, Leonel Morales <litomd at gmail.com>:
> Hi!
>
> It is a little bit challenging. One option is to design the scenes
> each besides to the other making sure each scene fits exactly in the
> entire camera frame, it may be needed to move the camera forwards to
> do that.
>
> Then move the camera to the left or right to the position where it
> frames exactly each scene with a movement with a duration of zero
> seconds, that makes the scene switch instantaneous.
>
> The easiest way to do the camera movements is to use camera markers.
> In the scene design move the camera to the exact location and then
> drop a marker at that position and then use "MoveAndOrientTo"
> instructions, with zero seconds duration, to make the scene switch.
>
> Depending on how complex the scenes are it is possible to have them
> all in the same place, all hidden but the elements of the current
> scene. A scene change consists in switching the visibility of the
> current and new scene, with duration of zero seconds again if the
> switch are to be made instantaneous.
>
> I am sure there are other ways unknown to me.
>
> Regards,
>
> Leonel
>
> 2015-04-14 18:24 GMT-06:00, reed-m <reed-m at harris.k12.ga.us>:
>> How do you do a scene change in Alice 3.1?  I've seen the question asked
>> many times, but not answered. Is it impossible?  I thought I'd done it
>> before, but can't remember what I did.
>>
>> Thanks,
>>
>> Memory Reed
>> Business Education Teacher
>> FBLA Adviser
>> 706-628-4278
>> reed-m at harris.k12.ga.us
>> _______________________________________________
>> alice-teachers mailing list
>> alice-teachers at lists.andrew.cmu.edu
>> https://lists.andrew.cmu.edu/mailman/listinfo/alice-teachers
>>
>