visualpython-users

Re: [Visualpython-users] extrusions

[Jonathan B. <jbr...@ea...>]

On Wed, 2006-07-12 at 10:15 -0400, Bruce Sherwood wrote:
> And though it is mostly irrelevant to this question, I'll mention that 
> if there are more than a thousand points on a curve, we actually display 
> only a thousand of those points, approximately evenly spaced from start 
> to end of the curve. This is necessary in order to maintain real-time 
> displays.

4.x doesn't do this any more.

-Jonathan

Re: [Visualpython-users] extrusions

[Bruce S. <Bru...@nc...>]

And though it is mostly irrelevant to this question, I'll mention that 
if there are more than a thousand points on a curve, we actually display 
only a thousand of those points, approximately evenly spaced from start 
to end of the curve. This is necessary in order to maintain real-time 
displays.

Bruce Sherwood

Jonathan Brandmeyer wrote:
> On Tue, 2006-07-11 at 19:32 -0500, Kuzminski, Stefan R wrote:
>   
>> Is there a way to retrieve the points interpolated by the curve? 
>>     
>
> The points in a curve's pos array define a consecutive set of straight
> line segments (ie, simple linear interpolation).  Does that answer your
> question?
>
> -Jonathan
>
>   
>> Thanks,
>> Stefan
>>
>> -----Original Message-----
>> From: Bruce Sherwood [mailto:Bru...@nc...] 
>> Sent: Tuesday, July 11, 2006 7:31 PM
>> To: Kuzminski, Stefan R
>> Cc: vis...@li...
>> Subject: Re: [Visualpython-users] extrusions
>>
>> I guess you could repetively make copies slightly displaced from the 
>> previous curve, which would approximate a surface (or a volume if you 
>> did this in two directions of displacement).
>>
>> Bruce Sherwood
>>
>> Kuzminski, Stefan R wrote:
>>     
>>> Hi,
>>>
>>>  
>>>
>>> I have a curve and would like to sweep it along a straight line to get
>>>       
>>> a volume.  Is this possible with vpython?
>>>
>>>  
>>>
>>> Thank you,
>>>
>>> Stefan Kuzminski
>>>
>>>  
>>>
>>>  
>>>
>>>  
>>>
>>> This email and any files transmitted with it are confidential,
>>>       
>> proprietary
>>     
>>> and intended solely for the individual or entity to whom they are
>>>       
>> addressed.
>>     
>>> If you have received this email in error please delete it immediately.
>>>
>>>
>>>       
>> ------------------------------------------------------------------------
>>     
>>>
>>>       
>> ------------------------------------------------------------------------
>> -
>>     
>>> 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=lnk&kid=120709&bid=263057&dat=121642
>>     
>> ------------------------------------------------------------------------
>>     
>>> _______________________________________________
>>> Visualpython-users mailing list
>>> Vis...@li...
>>> https://lists.sourceforge.net/lists/listinfo/visualpython-users
>>>       
>> This email and any files transmitted with it are confidential, proprietary
>> and intended solely for the individual or entity to whom they are addressed.
>> If you have received this email in error please delete it immediately.
>>
>>
>>
>> -------------------------------------------------------------------------
>> 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=lnk&kid=120709&bid=263057&dat=121642
>> _______________________________________________
>> Visualpython-users mailing list
>> Vis...@li...
>> https://lists.sourceforge.net/lists/listinfo/visualpython-users
>>     
>
>
>
> -------------------------------------------------------------------------
> 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=lnk&kid=120709&bid=263057&dat=121642
> _______________________________________________
> Visualpython-users mailing list
> Vis...@li...
> https://lists.sourceforge.net/lists/listinfo/visualpython-users
>   

[Visualpython-users] high cpu load when idle

[Maxim K. <max...@gm...>]

Hi

I'm running visual python 3.2.1 with python 2.3.5 on Debian-unstable.

After running from the python interpreter
>>> from visual import *
>>> c=curve(pos=[[0,0]])

the VPython window appears, and the CPU consumption by Xorg
goes to around 45%-50% (I don't have hardware openGL)
When using pyopengl directly, I don't see such behaviour.

Does this mean that vpython constantly redraws the same model,
even when the model is not changed?
If so, how can this be avoided?


--Maxim

Re: [Visualpython-users] extrusions

[Jonathan B. <jbr...@ea...>]

On Tue, 2006-07-11 at 19:32 -0500, Kuzminski, Stefan R wrote:
> Is there a way to retrieve the points interpolated by the curve? 

The points in a curve's pos array define a consecutive set of straight
line segments (ie, simple linear interpolation).  Does that answer your
question?

-Jonathan

> Thanks,
> Stefan
> 
> -----Original Message-----
> From: Bruce Sherwood [mailto:Bru...@nc...] 
> Sent: Tuesday, July 11, 2006 7:31 PM
> To: Kuzminski, Stefan R
> Cc: vis...@li...
> Subject: Re: [Visualpython-users] extrusions
> 
> I guess you could repetively make copies slightly displaced from the 
> previous curve, which would approximate a surface (or a volume if you 
> did this in two directions of displacement).
> 
> Bruce Sherwood
> 
> Kuzminski, Stefan R wrote:
> >
> > Hi,
> >
> >  
> >
> > I have a curve and would like to sweep it along a straight line to get
> 
> > a volume.  Is this possible with vpython?
> >
> >  
> >
> > Thank you,
> >
> > Stefan Kuzminski
> >
> >  
> >
> >  
> >
> >  
> >
> > This email and any files transmitted with it are confidential,
> proprietary
> > and intended solely for the individual or entity to whom they are
> addressed.
> > If you have received this email in error please delete it immediately.
> >
> >
> ------------------------------------------------------------------------
> >
> >
> >
> ------------------------------------------------------------------------
> -
> > 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=lnk&kid=120709&bid=263057&dat=121642
> >
> ------------------------------------------------------------------------
> >
> > _______________________________________________
> > Visualpython-users mailing list
> > Vis...@li...
> > https://lists.sourceforge.net/lists/listinfo/visualpython-users
> This email and any files transmitted with it are confidential, proprietary
> and intended solely for the individual or entity to whom they are addressed.
> If you have received this email in error please delete it immediately.
> 
> 
> 
> -------------------------------------------------------------------------
> 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=lnk&kid=120709&bid=263057&dat=121642
> _______________________________________________
> Visualpython-users mailing list
> Vis...@li...
> https://lists.sourceforge.net/lists/listinfo/visualpython-users

Re: [Visualpython-users] extrusions

[Kuzminski, S. R <SKu...@fa...>]

Is there a way to retrieve the points interpolated by the curve?=20

Thanks,
Stefan

-----Original Message-----
From: Bruce Sherwood [mailto:Bru...@nc...]=20
Sent: Tuesday, July 11, 2006 7:31 PM
To: Kuzminski, Stefan R
Cc: vis...@li...
Subject: Re: [Visualpython-users] extrusions

I guess you could repetively make copies slightly displaced from the=20
previous curve, which would approximate a surface (or a volume if you=20
did this in two directions of displacement).

Bruce Sherwood

Kuzminski, Stefan R wrote:
>
> Hi,
>
> =20
>
> I have a curve and would like to sweep it along a straight line to get

> a volume.  Is this possible with vpython?
>
> =20
>
> Thank you,
>
> Stefan Kuzminski
>
> =20
>
> =20
>
> =20
>
> This email and any files transmitted with it are confidential,
proprietary
> and intended solely for the individual or entity to whom they are
addressed.
> If you have received this email in error please delete it immediately.
>
>
------------------------------------------------------------------------
>
>
>
------------------------------------------------------------------------
-
> 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=3D=
121642
>
------------------------------------------------------------------------
>
> _______________________________________________
> Visualpython-users mailing list
> Vis...@li...
> https://lists.sourceforge.net/lists/listinfo/visualpython-users
This email and any files transmitted with it are confidential, proprietar=
y
and intended solely for the individual or entity to whom they are address=
ed.
If you have received this email in error please delete it immediately.
=0D

Re: [Visualpython-users] extrusions

[Bruce S. <Bru...@nc...>]

I guess you could repetively make copies slightly displaced from the 
previous curve, which would approximate a surface (or a volume if you 
did this in two directions of displacement).

Bruce Sherwood

Kuzminski, Stefan R wrote:
>
> Hi,
>
>  
>
> I have a curve and would like to sweep it along a straight line to get 
> a volume.  Is this possible with vpython?
>
>  
>
> Thank you,
>
> Stefan Kuzminski
>
>  
>
>  
>
>  
>
> This email and any files transmitted with it are confidential, proprietary
> and intended solely for the individual or entity to whom they are addressed.
> If you have received this email in error please delete it immediately.
>
> ------------------------------------------------------------------------
>
>
> -------------------------------------------------------------------------
> 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=lnk&kid=120709&bid=263057&dat=121642
> ------------------------------------------------------------------------
>
> _______________________________________________
> Visualpython-users mailing list
> Vis...@li...
> https://lists.sourceforge.net/lists/listinfo/visualpython-users

Re: [Visualpython-users] extrusions

[Jonathan B. <jbr...@ea...>]

On Tue, 2006-07-11 at 15:29 -0500, Kuzminski, Stefan R wrote:
> Hi,
> 
>  
> 
> I have a curve and would like to sweep it along a straight line to get
> a volume.  Is this possible with vpython?

There is no existing "extrusion" primitive, however you can easily layer
this feature on top of the faces object.

HTH,
-Jonathan

[Visualpython-users] extrusions

[Kuzminski, S. R <SKu...@fa...>]

Hi,

=20

I have a curve and would like to sweep it along a straight line to get a
volume.  Is this possible with vpython?

=20

Thank you,

Stefan Kuzminski

=20

=20

=20


This email and any files transmitted with it are confidential, proprietar=
y
and intended solely for the individual or entity to whom they are address=
ed.
If you have received this email in error please delete it immediately.
=0D

[Visualpython-users] py2exe with Vpython

[Ryan H. <rf...@ma...>]

I have been unable to successfully use py2exe, even with the provided =
sample programs.  I imagine there is something relatively easy that I am =
doing incorrectly.

In the shell window I type "python setup.py py2exe" and get an error =
saying "no commands supplied"

I'd greatly appreciate any assistance anyone can offer.

Thanks,

Ryan Hoban
rf...@ma...

Mathematics Department
University of Maryland

[Visualpython-users] Summary of new features

[Bruce S. <Bru...@nc...>]

In lieu of full documentation, there is a summary of the new features in 
Jonathan Brandmeyer's beta test version of VPython. Find it in the 
"Recent Developments" section of vpython.org.

Bruce Sherwood

Re: [Visualpython-users] Helix transparency

[Bruce S. <Bru...@nc...>]

It appears that helix doesn't support transparency yet, nor does curve 
upon which helix is based. (The helix object is coded in Python, not 
C++; see the module "primitives.py" in the visual folder.) And I think 
it's the case that currently the only objects that handle textures are 
box and sphere.

Thanks for the reminder about axes. You're right, it would be good to 
have this object.

Bruce Sherwood

Robert Beichner wrote:

>What objects will support transparency?  I noticed that the helix  
>does not.  The crystal demo looks pretty neat when you can look  
>through the vibrating spherical atoms to see those farther back, but  
>the springs still get in the way since they are opaque.
>
>I'm experimenting with modulating the transparency of a vector with  
>its magnitude.  (In other words, little vectors are also more  
>transparent.)  Fill space with a lot of these short, clear vectors  
>may help get the idea across that electric and magnetic fields fill  
>space and aren't just confined to the regions near charges, wires,  
>etc.  It looks promising so far.  (I've modified Ruth's program that  
>illustrates a B field near a straight wire, if anyone wants to see  
>it.)  Conversely, I wonder if making Gaussian surfaces transparent  
>would make them seem less "real" to students.
>
>Any chance of a coordinate axes object going into the "final" new  
>version?  It would be one less thing for students to have to worry  
>about.  I use boilerplate, but an object would be cleaner.
>
>
>Bob
>
>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=lnk&kid=120709&bid=263057&dat=121642
>_______________________________________________
>Visualpython-users mailing list
>Vis...@li...
>https://lists.sourceforge.net/lists/listinfo/visualpython-users
>  
>

[Visualpython-users] Helix transparency

[Robert B. <bei...@nc...>]

What objects will support transparency?  I noticed that the helix  
does not.  The crystal demo looks pretty neat when you can look  
through the vibrating spherical atoms to see those farther back, but  
the springs still get in the way since they are opaque.

I'm experimenting with modulating the transparency of a vector with  
its magnitude.  (In other words, little vectors are also more  
transparent.)  Fill space with a lot of these short, clear vectors  
may help get the idea across that electric and magnetic fields fill  
space and aren't just confined to the regions near charges, wires,  
etc.  It looks promising so far.  (I've modified Ruth's program that  
illustrates a B field near a straight wire, if anyone wants to see  
it.)  Conversely, I wonder if making Gaussian surfaces transparent  
would make them seem less "real" to students.

Any chance of a coordinate axes object going into the "final" new  
version?  It would be one less thing for students to have to worry  
about.  I use boilerplate, but an object would be cleaner.


Bob

[Visualpython-users] Improved instructions for installing on Mac

[Bruce S. <Bru...@nc...>]

The Mac download instructions at vpython.org have been improved to 
reflect the fact that the Python 2.3 version of Visual 2.9 (Fink package 
visual-py23) can be installed quickly and easily. It's only if one needs 
to base VPython on Python 2.4 that you have to go through a very lengthy 
process.

Bruce Sherwood

Re: [Visualpython-users] 4.0beta2 issues

[Bruce S. <Bru...@nc...>]

Thanks much for the feedback. There are indeed a variety of bugs in the 
new VPython, plus one necessary "feature". The "feature" is this: the 
new transparency capability is an example of "go fast, be wrong". It's 
wonderful to have transparency, but it  is not difficult to create a 
scene where transparency doesn't work properly. Non-opaque objects are 
ordered back to front for rendering purposes, so that those in front can 
have some of the color of those in back. The ordering is based on the 
center of the object. So for example a long transparent cylinder whose 
center is at (0,0,0) but whose axis runs along (1,0,1) is treated as 
though all parts of its axis were at z=0, which is incorrect. Something 
like this is what's happening with your cone example.

I'd like to take the opportunity on behalf of the VPython community to 
thank Jonathan Brandmeyer for his huge contributions to the development 
of VPython. He carried off two major developments. The first was to 
create an auto-configure installation mechanism which addressed severe 
problems that had existed with compiling and installing Visual on 
Linux/Unix platforms. The second was the new capabilities of 
transparency, surface textures, and sophisticated lighting. These 
represent an enormous step up for VPython. It also represents a 
fundamental change in the architecture of the Visual module, and because 
of that it will take some time to identify and fix the bugs. What he has 
done is not a simple addition to Visual but a major rewrite.

Jonathan just graduated from NCSU in engineering. He encountered VPython 
during two semesters of introductory physics (Matter & Interactions) 
taught by Ruth Chabay and me. He got interested in the underlying 
software and began working on development. Alas, he is about to get a 
job in the real world and won't be free to spend large amounts of time 
on VPython. With his help, I'm trying to come up to speed on the new 
VPython as quickly as possible so that I can maintain and document it, 
but there's an awful lot to learn, having been mostly away from working 
with the software for the last several years while Chabay and I were 
focussed on getting our physics curriculum to work at NCSU. I'm at the 
point now where I can compile and fix simple bugs on Linux (in CVS are 
some simple bug fixes for textures) but for some reason haven't yet 
succeeded in compiling on Windows, which is a high priority.

Again, thanks, Jonathan!

Bruce Sherwood

Rob Salgado wrote:

>Thanks for 4.0beta2. It looks like it has some nice new features.  I look
>forward to learning how to use them!
>
>
>I thought I'd mention some of the issues I have had with the latest beta.
>I apologize that I have not had the time to isolate the key issues myself.
>Maybe someone can spot the problems. (I should mention that I am going
>from Python2.3.4-VPython2003-10-05b to Python2.4.4-VPython4.0beta2. It
>maybe that some of my issues already appear in VPython3.2.9.exe .)
>
>First, it seems that the VPython windows don't react to keys anymore.
>ESC doesn't seem to terminate the window. Keystrokes don't seem to be
>caught with scene.kb.keys / scene.kb.getkey().
>
>
>Second, here is a transparency example which seems to show a weird artifact.
>
>from visual import *
>scene.background=color.blue
>
>for r in arange(.1,1.1,.1):
>    sphere(pos=(0,0,0), radius=r,  alpha=1.1-r)
>
>C1=cone(pos=(0,0,0),axis=vector(0.5,1,0),alpha=.25,color=color.yellow,radius=1.25)
>
>while 1:
>    rate(20)
>    C1.rotate(angle=0.2,axis=vector(1,1,1))
>
>
>Third, here is a more involved program which animates Ampere's Law.
>http://www.physics.syr.edu/~salgado/software/vpython/Maxwell-Ampere.py
>The keys (a) (e) (i) (d) (n), which toggle features in the display, don't
>work in the new beta [as mentioned above]. In addition, the green and blue
>figures are supposed to be [size-modified] arrows... but they show up as
>squares in the new beta.
>
>
>By the way, I am able to run these programs in both Python23 and Python24
>by use of a registry hack, which is available on
>http://www.physics.syr.edu/~salgado/software/vpython/
>
>Any assistance on the issues raised would be appreciated.
>
>Thanks.
>
>rob salgado
>
>
>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=lnk&kid=120709&bid=263057&dat=121642
>_______________________________________________
>Visualpython-users mailing list
>Vis...@li...
>https://lists.sourceforge.net/lists/listinfo/visualpython-users
>  
>

[Visualpython-users] 4.0beta2 issues

[Rob S. <sa...@ph...>]

Thanks for 4.0beta2. It looks like it has some nice new features.  I look
forward to learning how to use them!


I thought I'd mention some of the issues I have had with the latest beta.
I apologize that I have not had the time to isolate the key issues myself.
Maybe someone can spot the problems. (I should mention that I am going
from Python2.3.4-VPython2003-10-05b to Python2.4.4-VPython4.0beta2. It
maybe that some of my issues already appear in VPython3.2.9.exe .)

First, it seems that the VPython windows don't react to keys anymore.
ESC doesn't seem to terminate the window. Keystrokes don't seem to be
caught with scene.kb.keys / scene.kb.getkey().


Second, here is a transparency example which seems to show a weird artifact.

from visual import *
scene.background=color.blue

for r in arange(.1,1.1,.1):
    sphere(pos=(0,0,0), radius=r,  alpha=1.1-r)

C1=cone(pos=(0,0,0),axis=vector(0.5,1,0),alpha=.25,color=color.yellow,radius=1.25)

while 1:
    rate(20)
    C1.rotate(angle=0.2,axis=vector(1,1,1))


Third, here is a more involved program which animates Ampere's Law.
http://www.physics.syr.edu/~salgado/software/vpython/Maxwell-Ampere.py
The keys (a) (e) (i) (d) (n), which toggle features in the display, don't
work in the new beta [as mentioned above]. In addition, the green and blue
figures are supposed to be [size-modified] arrows... but they show up as
squares in the new beta.


By the way, I am able to run these programs in both Python23 and Python24
by use of a registry hack, which is available on
http://www.physics.syr.edu/~salgado/software/vpython/

Any assistance on the issues raised would be appreciated.

Thanks.

rob salgado

Re: [Visualpython-users] Slight mistake in document

[Bruce S. <Bru...@nc...>]

Thanks much!

Bruce Sherwood

Scott David Daniels wrote:

>In visual/docs/visual/options.html:
>A number of places refer to __copy()__ rather than __copy__().
>Even the text says "There are two underscores before and after
>the copy()."
>
>visual/docs/visual/defaults.html:
>Fails to mention the ellipsoid and helix shapes.
>
>-- Scott David Daniels
>Sco...@Ac...
>
>
>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=lnk&kid=120709&bid=263057&dat=121642
>_______________________________________________
>Visualpython-users mailing list
>Vis...@li...
>https://lists.sourceforge.net/lists/listinfo/visualpython-users
>  
>

[Visualpython-users] Slight mistake in document

[Scott D. D. <Sco...@Ac...>]

In visual/docs/visual/options.html:
A number of places refer to __copy()__ rather than __copy__().
Even the text says "There are two underscores before and after
the copy()."

visual/docs/visual/defaults.html:
Fails to mention the ellipsoid and helix shapes.

-- Scott David Daniels
Sco...@Ac...

[Visualpython-users] alpha and opacity

[Bruce S. <Bru...@nc...>]

In the new beta VPython, color is red, green, blue, and optionally alpha 
(meaning opacity, with 0 transparent and 1 opaque). The name "alpha" is 
historical but is the standard term in professional graphics discourse. 
I invite discussion of the following proposal.

Proposal: Suppose we use the term "opacity" throughout VPython, 
including documentation (to be written), but permit the use of "alpha" 
to accommodate those who normally use that term, with documentation 
pointing out in a footnote that one can use "alpha" as a synonym for 
"opacity".

Rationale: There was already in VPython the label object where opacity 
is called "opacity", which was chosen to represent the concept because 
it's ordinary language, whereas "alpha" is technical. In keeping with 
the existing label opacity attribute, it seems appropriate to use the 
same word elsewhere for the same concept.

Minor issue: In creating a texture object, one of the types is "rgba". 
In this proposal the standard form would be "rgbo" but as elsewhere with 
a footnote saying you can use "rgba".

Bruce Sherwood

P.S. A separate but related point is that currently "color.white" is a 
triple (1,1,1). Perhaps it should be a quadruple, (1,1,1,1)? It seems a 
bit unlikely that this would break any existing programs. Technically, 
the change would consist simply of changing the definitions in the 
crayola.py file. And the rgb<->hsv conversions would preserve the number 
of components in the original color.

[Visualpython-users] still error message in VPython-Win-Py3.4-4.beta2

[Andrey A. <an...@uc...>]

I installed VPython-Win-Py3.4-4.beta2
then I tried this:
>>> from visual import *
>>> rod = sphere()
>>> ================================ RESTART ====
A VPython window appeared  only for a part of a second then the shell 
restarted.

I tried this on 2 different machines equipped with Windows XP,
and on a third machine with Windows 2000 - the same error message.
To be sure there are no other reasons I disabled firewall and antiviral 
software.

So, I haven' seen VPython-Win-Py3.4-4.beta2 in real time.

math teacher 

[Visualpython-users] feature request: window styles

[Rob S. <sa...@ph...>]

I am about to try the latest beta...
...but from peeking at the source, I thought I'd make a feature request
that I hope isn't too hard to implement.

In 4.0beta2's winrender_surface.cpp render_surface::create(),
there is a variable "style" which specifies the window parameters

(line 436)
if (!fullscreen)
   style = WS_OVERLAPPEDWINDOW | WS_CLIPCHILDREN | WS_CLIPSIBLINGS;

My suggestion: allow the VPython program to select some alternate
combinations of such properties at creation time.

A while back I had fooled around with my 2003-10-05 installations.
By trial and error, I made some alternative cvisual.dlls :

	style = WS_OVERLAPPEDWINDOW | WS_CLIPCHILDREN | WS_CLIPSIBLINGS;
	style = WS_DLGFRAME    | WS_POPUP;
	style = WS_POPUP; // frameless
	style = WS_DLGFRAME    | WS_POPUP; // border-only
	style = WS_POPUPWINDOW; // frameless with move/close
	style = WS_POPUPWINDOW | WS_CAPTION ; // bordered with move/close style =
WS_POPUP | WS_THICKFRAME; // bordered resizable
	style = WS_POPUPWINDOW | WS_THICKFRAME; // bordered resizable with
move/close
	//WS_OVERLAPPEDWINDOW gave the minimize/maximize/close options
	style = WS_POPUPWINDOW | WS_THICKFRAME; // bordered resizable with
move/close, topmost

At one point, I remember fooling around with a partially-transparent
scene... but I can find those files now.

Of course, one will lose some ability in moving, resizing, minimizing,
maximizing, and terminating with the mouse.  But there are alternate ways
to control this (e.g. via the taskbar, via a third-party program AutoIt),
if necessary.

Why do this?
I think some multi-scene applications (like in my relativity animations at
http://www.phy.syr.edu/courses/modules/LIGHTCONE/LightClock/ ) look nicer
and possibly more professional looking (better suited to screen capturing)
without the title bar, buttons, and borders.


rob salgado

[Visualpython-users] texture generator

[Bruce S. <Bru...@nc...>]

For those of you who are playing with Jonathan Brandmeyer's beta release 
of a new VPython that supports surface textures, transparency, and 
sophisticated lighting, there is now a texture generator program in the 
contributed section of vpython.org. It creates texture files (*.vpt for 
VPython Texture) with a wood-like character which can be applied to 
boxes and spheres.

Bruce Sherwood

[Visualpython-users] example programs

[Bruce S. <Bru...@nc...>]

I just discovered that the Linux installer for the new experimental 
version doesn't install texturetest.py nor labels.py. If you're playing 
with this version on Linux, you might get the files from the examples 
folder of the package.

Bruce Sherwood

Re: [Visualpython-users] [Fwd: [Sherwood] Fwd: 06_spectrum.py now works]

[Martin C. <cos...@wa...>]

Bruce Sherwood wrote:
> Does anyone have a clue as to what could be Joe's problem?

Concerning the SF problem, no idea. He has had the same problem with the 
Fink mailing lists, and no solution was found so far.
[]
>> What are the chances of getting VPython 4 as a Fink package after  
>> it's declared stable?

I guess this depends on my schedule :-) I haven't yet had time to look 
at version 4. I have been busy making sure that 3.2.9 is in the 
Fink-0.8.1 binary distribution that was released a couple of days ago.

Contrary to what the package database at 
<http://pdb.finkproject.org/pdb/package.php/visual-py24> says, 
visual-py24-3.2.9-1002 (also *-py23) does exist in the 10.4 binary 
distribution, both for ppc and for intel.

-- 
Martin

[Visualpython-users] [Fwd: [Sherwood] Fwd: 06_spectrum.py now works]

[Bruce S. <Bru...@nc...>]

Does anyone have a clue as to what could be Joe's problem?

-------- Original Message --------
Subject: 	[Sherwood] Fwd: 06_spectrum.py now works
Date: 	Sun, 18 Jun 2006 20:10:20 -0400
From: 	Joe Heafner <hea...@st...>
To: 	Sherwood Bruce <bas...@un...>
References: 	<B21...@st...>


Hello Bruce.

I tried posting this to the visualpython-users list and once again  
sourceforge is rejecting my posts. I've absolutely no idea why it no  
longer likes me. My ISP says the problem is on sourceforge's end and  
I can't get anyone at sourceforge to talk to me about it. Frustrating.

Anyway, could you post my message to the list? I can still receive  
posts fine, I just can't send them.

Begin forwarded message:

> From: Joe Heafner <hea...@st...>
> Date: June 18, 2006 8:03:50 PM EDT
> To: Visualpython-users <vis...@li...>
> Subject: 06_spectrum.py now works
>
> Last night, I wiped out my old Fink distribution and installed the  
> new 0.8.1 release on my iMac and built visualpy24. The program that  
> wouldn't previously run, 06_spectrum.py, now runs perfectly. This  
> confirms my suspicion that the problem was a bug in Python and not  
> in Visual. The program worked perfectly under Windows at work. Now  
> I need to put the new Fink on my MacBook Pro and make sure  
> everything works on it.
>
> Incidentally, I now have Windows XP Home running under Parallels  
> Desktop (http://www.parallels.com) but I've not yet tried VPython  
> under this environment. I've read that 3D graphics isn't yet  
> supported under Parallels so I wouldn't think VPython would run.
>
> What are the chances of getting VPython 4 as a Fink package after  
> it's declared stable?
>
> Joe Heafner
> heafnerj(at)sticksandshadows(dot)com
> www(dot)SticksAndShadows(dot)com
>
>
>

Joe Heafner
heafnerj(at)sticksandshadows(dot)com
www(dot)SticksAndShadows(dot)com

[Visualpython-users] (no subject)

[waipot n. <nw...@ya...>]

  
 __________________________________________________
Do You Yahoo!?
Tired of spam?  Yahoo! Mail has the best spam protection around 
http://mail.yahoo.com