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Richard Dawkins quotes
Science is the poetry of reality.
Let us try to teach generosity and altruism, because we are born selfish.
The solution often turns out more beautiful than the puzzle.
Natural selection will not remove ignorance from future generations.
One of the things that is wrong with religion is that it teaches us to be satisfied with answers which are really not answers at all.
Our animal origins are constantly lurking behind, even if they are filtered through complicated social evolution.
Blindness to suffering is an inherent consequence of natural selection. Nature is neither kind nor cruel but indifferent.
It is a remarkable coincidence that almost everyone has the same religion as their parents and it always just so happens they’re the right religion
We are all atheist about most of the gods that societies have ever believed in. Some of us just one god further.
Religion is capable to drive people to such a dangerous folly that faith seems to me to qualify as a mental illness.
The less you think the more you believe.
Do not indoctrinate your children. Teach them how to think for themselves, how to evaluate evidence, and how to disagree with you.
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Rendering – BRDF – Bidirectional reflectance distribution function
http://en.wikipedia.org/wiki/Bidirectional_reflectance_distribution_function
The bidirectional reflectance distribution function is a four-dimensional function that defines how light is reflected at an opaque surface
http://www.cs.ucla.edu/~zhu/tutorial/An_Introduction_to_BRDF-Based_Lighting.pdf
In general, when light interacts with matter, a complicated light-matter dynamic occurs. This interaction depends on the physical characteristics of the light as well as the physical composition and characteristics of the matter.
That is, some of the incident light is reflected, some of the light is transmitted, and another portion of the light is absorbed by the medium itself.
A BRDF describes how much light is reflected when light makes contact with a certain material. Similarly, a BTDF (Bi-directional Transmission Distribution Function) describes how much light is transmitted when light makes contact with a certain material
http://www.cs.princeton.edu/~smr/cs348c-97/surveypaper.html
It is difficult to establish exactly how far one should go in elaborating the surface model. A truly complete representation of the reflective behavior of a surface might take into account such phenomena as polarization, scattering, fluorescence, and phosphorescence, all of which might vary with position on the surface. Therefore, the variables in this complete function would be:
incoming and outgoing angle incoming and outgoing wavelength incoming and outgoing polarization (both linear and circular) incoming and outgoing position (which might differ due to subsurface scattering) time delay between the incoming and outgoing light ray