Hi,

I'm installing sketchup in the computers of the school where I work now,
but I'm having problems with some of them.
Skethup installs but freezes at startup.
The computers with problems have the following
graphics card: via s3g unichrome igp.
I think that this is problem.
I updated the drivers but the problem remains.

Any ideas, suggestions, ... ?

Thank you.

@unknownuser said:

Vey nice idea. Have you introduced SU at math lesson?
Such a task at IT lesson would be easier to justify

Thanks Tomasz,

Yes, I used Sketchup for math lessons.
I think it is a powerful tool in math lessons for a variety of reasons.
Math objects become tangible, you have to draw them,
you have to concentrate on the process and not only on the product,
you can visualize lots of math concepts:
orthogonality in space, polyhedrons, lines in space, ...
rotations in space, shifting, scaling, ... (to name but a few)
When students know the tool,
the teacher may also use Sketchup to show lots of math results
(decomposition of cube in pyramids, cavalieri theorem, ... ).

Lessons:

1. basics
2. simple houses
3. polyhedrons (students' models)
4. tables and containers
5. cars (students' models 1,students' models 2)

@unknownuser said:

I love those cars. So much diversity among them Tomasz

[I would have loved to carry on this work with these students, but it was only a temporary post. I'll try SU in the next school for a longer period].

Sono un professore di matematica alle medie.
Ho fatto usare sketchup ai ragazzi di terza per 5 lezioni (di un'ora ciascuna)
come lavoro sui solidi.
Alla fine è venuto fuori un video che mi sembra carino e volevo condividere con voi.
I modelli sono dei ragazzi, l'animazione l'ho fatta io (con sketchup).

[flash=510,412:100bykv5]http://www.youtube.com/v/F1ZrbxKwNCU&hl=en[/flash:100bykv5]

[Ho già postato questo lavoro anche in Gallery, ma essendo italiano pensavo stesse bene anche qui]

@mateo soletic said:

Guzman,
We have started a Junior forum here some time ago. Maybe the children from your class would be interested in participating ...

Thank you very much, Mateo,
that's very interesting.

I finally found the info on the Junior forum:
http://www.sketchucation.com/forums/scf/viewtopic.php?f=179&t=13381&p=98811&hilit=junior

[Sorry if a post this again after the server failure]

Hi, I'm an italian math teacher.
I'm using sketchup with 13-year old children at school.

Here's the result of the first 5 lessons (1 hour each). Children made
the models,
I made the animation (with sketchup). I wanted to share the video
'cause I think it is interesting (even though, of course, very naive).
Thanks,

[flash=510,412:1rwn29pl]http://www.youtube.com/v/F1ZrbxKwNCU&hl=en[/flash:1rwn29pl]

omg the details!!!!! the renderings!!!!oh my god!!!!!!!!!!!!!
I'm completely speechless !!!

thanks,

I have a question:
is the creation of dynamic components only allowed to SU pro users ?

thanks.

I understand that any change in the geometry will be unhidden by default,
but after undoing every step some entities do not return to their hidden state.
I tried many times and I always get this behaviour even thow the unhidden entities
in the resulting scene may change.

thanks,

I have a model with 2 cubes (or parallelepidi)

In scene 2 the cube on the right is hidden

In scene 1 I modify the model as follows

I then use undo to undo this operation.
The model returns to its previous state, but the display options of scene 2 do change: here's scene 2 after undoing modeling operations:

I understand that undo does not have to set display options to their previous states, but this behaviour is somewhat annoying.

I hope the issue is clear (and sorry for english mistakes).

guzman.

yes, that would be really really useful.
As a workaround I normally set the axis temporarily as needed,
but that's annoying.

You can reproduce the bug even in 2D:

draw a rectangle,
move a point of the rectangle so that two edges cross,
you'll get a triangular face and an emtpy triangle:

now select all and intersect,

if you delete any side of the empty triangle
the triangular face that has apparently nothing to do
gets deleted too.

I think that SU still considers all those edges
as bounding edges of the face.
SU still considers all the edges as a single polygon
that just happens to have a point that gets used twice.
Try for instance to place the point you moved to its initial position
and then select the face: you'll notice that there is just one face:

hope this helps somehow.

Thanks for your answer,
I undertand what you say but some aspects remain unclear to me:

if Undo in SU applies only to modeling operations, after undoing modeling operations I wouold expect to have the same entities I had before the modeling operations (the exact same entities) and I would therefore expect to have the same display options on scenes.
It looks instead as if after undoing modeling operations you obtain new entities that have the same positions of the ones you had before the modeling operation, but since they are new entities you loose display options.

I understand that the contract of Undo does not require it to set display options to their previous states and I understand that the are many workarounds, but it seemed to me a strange behaviour.

Thanks for your answers.

(Windows)

If you right click the name of a tab
you have to navigate the context menu
using the tool you were using at that moment
instead of the arrow.

guzman.

To reproduce the bug consider the following situation:

I have a model representing two cubes.
The model has two scenes: scene 1 shows the cubes, scene 2 hides cube 2.
In scene 1 I draw a rectangle on a corner of cube 2 and I use push/pull.
I then use undo to undo the push/pull operation and the rectangle.

Scene 2 does not return to its previous state:

this is not the behaviour I expect from undo.

Is this "bug" already known ?
I didn't find it in the forum.

Thx,
guzman.