Hello all,

Is it possible to create an object that sparkles without using radiosity?

Thank you.

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In article <web.3fb876b21fb47b0ce237f84a0@news.povray.org>,
 "incognito" <nomail@nomail> wrote:

> Is it possible to create an object that sparkles without using radiosity?

Well, your question is a bit odd...radiosity isn't any help in creating 
a "sparkle" effect. You need to be more clear about what you want, 
though. For highlights on a polished surface, look at the specular 
keyword. (And phong if you like, though specular is supposed to be more 
accurate.)
For a lens flare effect, you need to look at one of the several include 
files that have been created for this purpose. I suggest Chris Colefax's 
Lens Effects or Nathan Kopp's NKFlare:

http://www.geocities.com/SiliconValley/Lakes/1434/#IncludeFiles
http://www.nathan.kopp.com/nkflare.htm

-- 
Christopher James Huff <cja### [at] earthlinknet>
http://home.earthlink.net/~cjameshuff/
POV-Ray TAG: chr### [at] tagpovrayorg
http://tag.povray.org/

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incognito wrote:
>Hello all,
>
>Is it possible to create an object that sparkles without using radiosity?
>
>Thank you.
>

Thanks for your reply.

I meant more like glitter. I am not trying to make it realistic necessarily.
I am not permitted to use anything outside of standard include files
though.

Hope this clarifies my message.

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In article <web.3fb8f873dd85df02c9c3748c0@news.povray.org>,
 "incognito" <nomail@nomail> wrote:

> I meant more like glitter. I am not trying to make it realistic necessarily.

Ok, that's a little more difficult. One good way might be to use the 
facets pattern in the normal. Or one thing I've done before with good 
results, put actual glitter on the object...thousands of smooth 
triangles with the normals set up to make them appear slightly bent. The 
trace() function will be of help in placing the glitter pieces on the 
object, and a mesh can make the memory consumption tolerable. 


> I am not permitted to use anything outside of standard include files
> though.

Not permitted? Why not?

-- 
Christopher James Huff <cja### [at] earthlinknet>
http://home.earthlink.net/~cjameshuff/
POV-Ray TAG: chr### [at] tagpovrayorg
http://tag.povray.org/

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Christopher James Huff wrote:
>In article <web.3fb8f873dd85df02c9c3748c0[at]news.povray.org>,
> "incognito" <nomail[at]nomail> wrote:
>
>> I meant more like glitter. I am not trying to make it realistic necessarily.
>
>Ok, that's a little more difficult. One good way might be to use the
>facets pattern in the normal. Or one thing I've done before with good
>results, put actual glitter on the object...thousands of smooth
>triangles with the normals set up to make them appear slightly bent. The
>trace() function will be of help in placing the glitter pieces on the
>object, and a mesh can make the memory consumption tolerable.
>
>
>> I am not permitted to use anything outside of standard include files
>> though.
>
>Not permitted? Why not?
>

Just a guess - maybe this person is creating a trace for a course.

>Christopher James Huff <cja### [at] earthlinknet>
>http://home.earthlink.net/~cjameshuff/
>POV-Ray TAG: chr### [at] tagpovrayorg
>http://tag.povray.org/
>

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cg-hci_novice wrote:
>Christopher James Huff wrote:
>>In article <web.3fb8f873dd85df02c9c3748c0[at]news.povray.org>,
>> "incognito" <nomail[at]nomail> wrote:
>>
>>> I meant more like glitter. I am not trying to make it realistic necessarily.
>>
>>Ok, that's a little more difficult. One good way might be to use the
>>facets pattern in the normal. Or one thing I've done before with good
>>results, put actual glitter on the object...thousands of smooth
>>triangles with the normals set up to make them appear slightly bent. The
>>trace() function will be of help in placing the glitter pieces on the
>>object, and a mesh can make the memory consumption tolerable.
>>
>>

Oh, didn't realize it was complex. Will look into this as time permits.

Thanks very much.

>>> I am not permitted to use anything outside of standard include files
>>> though.
>>
>>Not permitted? Why not?
>>
>
>Just a guess - maybe this person is creating a trace for a course.
>
>>Christopher James Huff <cja### [at] earthlinknet>
>>http://home.earthlink.net/~cjameshuff/
>>POV-Ray TAG: chr### [at] tagpovrayorg
>>http://tag.povray.org/
>>
>

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In article <web.3fb94a0edd85df0270c0121a0@news.povray.org>,
 "incognito" <nomail@nomail> wrote:

> >>> I meant more like glitter. I am not trying to make it realistic 
> >>> necessarily.
> >>
> >>Ok, that's a little more difficult. One good way might be to use the
> >>facets pattern in the normal. Or one thing I've done before with good
> >>results, put actual glitter on the object...thousands of smooth
> >>triangles with the normals set up to make them appear slightly bent. The
> >>trace() function will be of help in placing the glitter pieces on the
> >>object, and a mesh can make the memory consumption tolerable.
> 
> Oh, didn't realize it was complex. Will look into this as time permits.

Did you look at my first suggestion, the facets pattern? I wouldn't 
describe it as complex...

-- 
Christopher James Huff <cja### [at] earthlinknet>
http://home.earthlink.net/~cjameshuff/
POV-Ray TAG: chr### [at] tagpovrayorg
http://tag.povray.org/

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Christopher James Huff wrote:
>In article <web.3fb94a0edd85df0270c0121a0[at]news.povray.org>,
> "incognito" <nomail[at]nomail> wrote:
>
>> >>> I meant more like glitter. I am not trying to make it realistic
>> >>> necessarily.
>> >>
>> >>Ok, that's a little more difficult. One good way might be to use the
>> >>facets pattern in the normal. Or one thing I've done before with good
>> >>results, put actual glitter on the object...thousands of smooth
>> >>triangles with the normals set up to make them appear slightly bent. The
>> >>trace() function will be of help in placing the glitter pieces on the
>> >>object, and a mesh can make the memory consumption tolerable.
>>
>> Oh, didn't realize it was complex. Will look into this as time permits.
>
>Did you look at my first suggestion, the facets pattern? I wouldn't
>describe it as complex...

No, haven't had time yet. Thanks. Will see if I have time to try it later...
>
>Christopher James Huff <cja### [at] earthlinknet>
>http://home.earthlink.net/~cjameshuff/
>POV-Ray TAG: chr### [at] tagpovrayorg
>http://tag.povray.org/
>

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