I tried a cubic curve and it does look better. I agree that the "broken" may
caused by the data points.

Thanks a lot for your help :)


Stephen <mca### [at] aolcom> wrote:
> On 24/05/2014 15:33, xslittlegrass wrote:
>  > Hi Stephen,
>  >
>  > It works , thanks a lot!
>  > But there is still one broken part remains. I created a zoom in of the
>  > broken part here
>  >
>  > http://imgur.com/j1ys4Nb
>  >
>  > Do you know why that happens?
>  >
>
> Not really but I suspect that it may have something to do with the
> spacing of the plotted points.
> Have you tried a cubic curve?
> And less points. Remember that the curve does not necessary pass through
> the points. They are control points.
>
> --
>
> Regards
>      Stephen
>
> --
>
> Regards
>      Stephen

Post a reply to this message

On 24/05/2014 19:32, xslittlegrass wrote:
> I tried a cubic curve and it does look better. I agree that the "broken" may
> caused by the data points.
>
> Thanks a lot for your help :)
>
>

It is a pleasure. :-D
I have posted a couple of screenshots in p.b.images along with the lathe 
code I modified, a bit. As an example to show what I did.


-- 

Regards
     Stephen

Post a reply to this message

> On 24/05/2014 15:33, xslittlegrass wrote:
>  > Hi Stephen,
>  >
>  > It works , thanks a lot!
>  > But there is still one broken part remains. I created a zoom in of the
>  > broken part here
>  >
>  > http://imgur.com/j1ys4Nb
>  >
>  > Do you know why that happens?
>  >
>
> Not really but I suspect that it may have something to do with the
> spacing of the plotted points.
> Have you tried a cubic curve?
> And less points. Remember that the curve does not necessary pass through
> the points. They are control points.
>

For a quadratic_spline, the FIRST  point is a controll point, all others 
are actual points that are actualy used and, also, serve as controll 
points for the next point but not for the previous one. The curve is 
controlled from the second to third point but not from the third to 
second points.

In most cases, using the cubic_spline gives beter results.
In your case, it will shorten the object by one interval.

In some cases, using less points can help.


Alain

Post a reply to this message

Stephen <mca### [at] aolcom> wrote:
> On 24/05/2014 19:32, xslittlegrass wrote:
> > I tried a cubic curve and it does look better. I agree that the "broken" may
> > caused by the data points.
> >
> > Thanks a lot for your help :)
> >
> >
>
> It is a pleasure. :-D
> I have posted a couple of screenshots in p.b.images along with the lathe
> code I modified, a bit. As an example to show what I did.
>
>
> --
>
> Regards
>      Stephen

What is p.b.images?

Best,
xslittlegrass

Post a reply to this message

On 29/05/2014 03:15, xslittlegrass wrote:
> Stephen <mca### [at] aolcom> wrote:
>> On 24/05/2014 19:32, xslittlegrass wrote:
>>> I tried a cubic curve and it does look better. I agree that the "broken" may
>>> caused by the data points.
>>>
>>> Thanks a lot for your help :)
>>>
>>>
>>
>> It is a pleasure. :-D
>> I have posted a couple of screenshots in p.b.images along with the lathe
>> code I modified, a bit. As an example to show what I did.
>>
>>
>> --
>>
>> Regards
>>       Stephen
>
> What is p.b.images?
>
> Best,
> xslittlegrass
>
>

Sorry, povray.binaries.images on this newsgroup.

http://www.povray.org/resources/newsgroups/

->
http://news.povray.org/povray.binaries.images/

->

http://news.povray.org/povray.binaries.images/thread/%3C5380fd72%40news.povray.org%3E/


If I remember correctly. Bishop3D's trial allows you to save scenes with 
up to 4 objects. That would allow you to work on a lathe and save it.

You would need to install PovRay 3.6 to get an immage but you can 
inspect the code and copy and past into your 3.7 scene.

-- 

Regards
     Stephen

Post a reply to this message

> On 29/05/2014 03:15, xslittlegrass wrote:
>> Stephen <mca### [at] aolcom> wrote:
>>> On 24/05/2014 19:32, xslittlegrass wrote:
>>>> I tried a cubic curve and it does look better. I agree that the
>>>> "broken" may
>>>> caused by the data points.
>>>>
>>>> Thanks a lot for your help :)
>>>>
>>>>
>>>
>>> It is a pleasure. :-D
>>> I have posted a couple of screenshots in p.b.images along with the lathe
>>> code I modified, a bit. As an example to show what I did.
>>>
>>>
>>> --
>>>
>>> Regards
>>>       Stephen
>>
>> What is p.b.images?
>>
>> Best,
>> xslittlegrass
>>
>>
>
> Sorry, povray.binaries.images on this newsgroup.
>
> http://www.povray.org/resources/newsgroups/
>
> ->
> http://news.povray.org/povray.binaries.images/
>
> ->
>
>
http://news.povray.org/povray.binaries.images/thread/%3C5380fd72%40news.povray.org%3E/
>
>
>
> If I remember correctly. Bishop3D's trial allows you to save scenes with
> up to 4 objects. That would allow you to work on a lathe and save it.
>
> You would need to install PovRay 3.6 to get an immage but you can
> inspect the code and copy and past into your 3.7 scene.
>

Use version 3.7. Version 3.6.x is obsolete.
Next, it's just a mather of refering the correct path.

Post a reply to this message

On 29/05/2014 22:33, Alain wrote:
> Use version 3.7. Version 3.6.x is obsolete.
> Next, it's just a mather of refering the correct path.

How interesting I thought it had to do with the Comm.dll not being 
updated for 64 bit. At least that is what Hugo told me. It might run on 
a 32 bit machine. I have no way of knowing.

-- 

Regards
     Stephen

Post a reply to this message

> On 29/05/2014 22:33, Alain wrote:
>> Use version 3.7. Version 3.6.x is obsolete.
>> Next, it's just a mather of refering the correct path.
>
> How interesting I thought it had to do with the Comm.dll not being
> updated for 64 bit. At least that is what Hugo told me. It might run on
> a 32 bit machine. I have no way of knowing.
>

For POV-Ray: The installer for version 3.7 will install the 32 bits 
version on a 32 bits system and the 64 bits version on a 64 bits system.

For Bishop3D, even if it's a 32 bits application, it should be able to 
run on a 64 bits system, in 32 bits compatibility mode.

Post a reply to this message

On 31/05/2014 20:05, Alain wrote:

>> On 29/05/2014 22:33, Alain wrote:
>>> Use version 3.7. Version 3.6.x is obsolete.
>>> Next, it's just a mather of refering the correct path.
>>
>> How interesting I thought it had to do with the Comm.dll not being
>> updated for 64 bit. At least that is what Hugo told me. It might run on
>> a 32 bit machine. I have no way of knowing.
>>
>
> For POV-Ray: The installer for version 3.7 will install the 32 bits
> version on a 32 bits system and the 64 bits version on a 64 bits system.
>
> For Bishop3D, even if it's a 32 bits application, it should be able to
> run on a 64 bits system, in 32 bits compatibility mode.

PovRay installed pvengine, pvengine32-sse2 and pvengine64 on my machine.
Bishop3D will run pvengine & pvengine32-sse2 quite happily. It has been 
a long time since I checked.
It will start pvengine64 but not render any files. PovRay stops after 
the list of contributors.


So it will run PovRay 3.7 but not as a 64 bit application.

-- 

Regards
     Stephen

Post a reply to this message

Alain <kua### [at] videotronca> wrote:

> > On 29/05/2014 03:15, xslittlegrass wrote:
> >> Stephen <mca### [at] aolcom> wrote:
> >>> On 24/05/2014 19:32, xslittlegrass wrote:
> >>>> I tried a cubic curve and it does look better. I agree that the
> >>>> "broken" may
> >>>> caused by the data points.
> >>>>
> >>>> Thanks a lot for your help :)
> >>>>
> >>>>
> >>>
> >>> It is a pleasure. :-D
> >>> I have posted a couple of screenshots in p.b.images along with the lathe
> >>> code I modified, a bit. As an example to show what I did.
> >>>
> >>>
> >>> --
> >>>
> >>> Regards
> >>>       Stephen
> >>
> >> What is p.b.images?
> >>
> >> Best,
> >> xslittlegrass
> >>
> >>
> >
> > Sorry, povray.binaries.images on this newsgroup.
> >
> > http://www.povray.org/resources/newsgroups/
> >
> > ->
> > http://news.povray.org/povray.binaries.images/
> >
> > ->
> >
> >
http://news.povray.org/povray.binaries.images/thread/%3C5380fd72%40news.povray.org%3E/
> >
> >
> >
> > If I remember correctly. Bishop3D's trial allows you to save scenes with
> > up to 4 objects. That would allow you to work on a lathe and save it.
> >
> > You would need to install PovRay 3.6 to get an immage but you can
> > inspect the code and copy and past into your 3.7 scene.
> >
>
> Use version 3.7. Version 3.6.x is obsolete.
> Next, it's just a mather of refering the correct path.

Thanks a lot! That's really helpful.

Post a reply to this message