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http://wiki.povray.org/content/Documentation:Tutorial_Section_3.3#Using_Emission
Is emission always a single number, or does it take a color vector too?
I have emission 1 in my scene and am wondering if I should use a light
source's color value as well.
Mike
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On 9/8/2016 6:16 AM, Mike Horvath wrote:
> http://wiki.povray.org/content/Documentation:Tutorial_Section_3.3#Using_Emission
>
>
> Is emission always a single number, or does it take a color vector too?
> I have emission 1 in my scene and am wondering if I should use a light
> source's color value as well.
>
>
It takes a colour vector.
--
Regards
Stephen
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On 9/8/2016 1:40 AM, Stephen wrote:
> On 9/8/2016 6:16 AM, Mike Horvath wrote:
>> http://wiki.povray.org/content/Documentation:Tutorial_Section_3.3#Using_Emission
>>
>>
>>
>> Is emission always a single number, or does it take a color vector too?
>> I have emission 1 in my scene and am wondering if I should use a light
>> source's color value as well.
>>
>>
>
> It takes a colour vector.
>
>
Is it better to use the color vector than "1"?
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On 9/8/2016 7:21 AM, Mike Horvath wrote:
> On 9/8/2016 1:40 AM, Stephen wrote:
>> On 9/8/2016 6:16 AM, Mike Horvath wrote:
>>> http://wiki.povray.org/content/Documentation:Tutorial_Section_3.3#Using_Emission
>>>
>>>
>>>
>>>
>>> Is emission always a single number, or does it take a color vector too?
>>> I have emission 1 in my scene and am wondering if I should use a light
>>> source's color value as well.
>>>
>>>
>>
>> It takes a colour vector.
>>
>>
>
> Is it better to use the color vector than "1"?
It depends what you want the effect to be. If you want a white emission
then use a digit.
If you want something more interesting then use the vector.
absorption srgb <0.000,1.000,1.000> * Absorption_Factor
emission srgb <1.000,0.000,0.000> * Emission_Factor
--
Regards
Stephen
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On 9/8/2016 2:53 AM, Stephen wrote:
> On 9/8/2016 7:21 AM, Mike Horvath wrote:
>> On 9/8/2016 1:40 AM, Stephen wrote:
>>> On 9/8/2016 6:16 AM, Mike Horvath wrote:
>>>> http://wiki.povray.org/content/Documentation:Tutorial_Section_3.3#Using_Emission
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> Is emission always a single number, or does it take a color vector too?
>>>> I have emission 1 in my scene and am wondering if I should use a light
>>>> source's color value as well.
>>>>
>>>>
>>>
>>> It takes a colour vector.
>>>
>>>
>>
>> Is it better to use the color vector than "1"?
>
> It depends what you want the effect to be. If you want a white emission
> then use a digit.
> If you want something more interesting then use the vector.
>
> absorption srgb <0.000,1.000,1.000> * Absorption_Factor
> emission srgb <1.000,0.000,0.000> * Emission_Factor
>
>
I'm not talking about emissive media. I am talking about the emission
keyboard in the finish statement.
Also, I'm not sure how to update the lens effects script.
http://www.oocities.org/ccolefax/lenseffects.html
It defines pigments and finishes at different times and places in the
code. Very tricky.
Mike
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On 9/8/2016 8:46 AM, Mike Horvath wrote:
> On 9/8/2016 2:53 AM, Stephen wrote:
>> On 9/8/2016 7:21 AM, Mike Horvath wrote:
>>> On 9/8/2016 1:40 AM, Stephen wrote:
>>>> On 9/8/2016 6:16 AM, Mike Horvath wrote:
>>>>> http://wiki.povray.org/content/Documentation:Tutorial_Section_3.3#Using_Emission
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> Is emission always a single number, or does it take a color vector
>>>>> too?
>>>>> I have emission 1 in my scene and am wondering if I should use a light
>>>>> source's color value as well.
>>>>>
>>>>>
>>>>
>>>> It takes a colour vector.
>>>>
>>>>
>>>
>>> Is it better to use the color vector than "1"?
>>
>> It depends what you want the effect to be. If you want a white emission
>> then use a digit.
>> If you want something more interesting then use the vector.
>>
>> absorption srgb <0.000,1.000,1.000> * Absorption_Factor
>> emission srgb <1.000,0.000,0.000> * Emission_Factor
>>
>>
>
>
> I'm not talking about emissive media. I am talking about the emission
> keyboard in the finish statement.
>
I don't use it. I am stuck on Pov 3·6.
But since "The syntax and effect are virtually identical to ambient".
Use it the way you would with ambient to add a bit of lighting. You can
also use it with radiosity to make an object glow a colour.
> Also, I'm not sure how to update the lens effects script.
>
> http://www.oocities.org/ccolefax/lenseffects.html
>
> It defines pigments and finishes at different times and places in the
> code. Very tricky.
>
>
Sorry, it is years since I looked at it and even then it was as a plugin.
I would be tempted to load the file(s) in a spreadsheet and filter it on
ambient and emission. Just to see how often they are referenced. It
might be a simple find & replace, job.
--
Regards
Stephen
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Am 08.09.2016 um 07:16 schrieb Mike Horvath:
> http://wiki.povray.org/content/Documentation:Tutorial_Section_3.3#Using_Emission
>
> Is emission always a single number, or does it take a color vector too?
> I have emission 1 in my scene and am wondering if I should use a light
> source's color value as well.
The emission can be a colour, but it is automatically multiplied by the
pigment colour. So to get a coloured emission, you can _either_ use a
white pigment and set `emission` to the desired colour, _or_ use a
pigment of the desired colour and set `emission` to a float.
And yes, you should indeed do one of these things in a looks_like object
if the light source itself isn't white.
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