Re: Refection in the RayShade renderer

[Roger H. <rog...@mi...>]

I see now.

Perhaps it might be better for me to change my program to refer to =20
roughness and smoothness rather than matt and gloss.

Thank you very much for the lesson, please disregard my earlier =20
ramblings.


On 28 Apr, 2007, at 11:48, Jose' Cruanyes wrote:

>
> Il giorno 28/apr/07, alle ore 12:15, Roger Holmes ha scritto:
>
>> Are you saying the more reflective one on the left is matt and the
>> less reflective one on the right is glossy?
>> If so our program has had its controls labelled back to front for
>> many years. Interesting!
>
>
> keep aside the fact that my english is limited, so certain details of
> the adjectives can be misunderstanding...
>
> #define "wheat flour" matte
> #define "car paint" glossy
>
> with these definitions the right torus is glossy and the left one is
> matte
>
> another aspect is which one cast more light in the direction of the
> observer
> in this case a matte object is more "brilliant" because it's rough
> surface reflect light in every direction, while a glossy object
> reflects the light in just one
>
> in a limit case, a perfect mirror in a black space is invisible
> except in the direction where the light is reflected
>
>
> so in my opinion one thing is the amount of light reflected, and
> another is how mirror-like is an object
>
> so the "sugar coated donut" in the left, can't reflect the objects
> around it, even if it is more bright, while I expect to see the
> objects around the right torus reflected on it
>
> you can see a discussion at:
>
> <http://www.artifice.com/support/user_guide/documents/tips/
> specularity.html>
>
>
>
> Pax et Bonum
>
> # Dott. Jos=E9 Cruanyes Aguilar  -  C.E. Soft srl
> #  Pzza. Firenze,4 MILANO  -  XX Settembre 10, CREMONA
> #   02,3923101                0372,460602
>
>
>
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