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A Hitchhiker's Guide to Virtual Reality
book

A Hitchhiker's Guide to Virtual Reality

by Karen McMenemy, Robin Stuart Ferguson
July 2007
Beginner to intermediate content levelBeginner to intermediate
604 pages
17h 36m
English
A K Peters/CRC Press
Content preview from A Hitchhiker's Guide to Virtual Reality
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162 7. The Rendering Pipeline
For a directional light source with incident direction
ˆ
d:
I
d
=
ˆ
d · ˆn.
For a spotlight located at P
l
, pointing in direction
ˆ
d and having
light cone angles
1
and
2
:
I
d
=
P
l
p
|P
l
p|
· ˆn if <
1
,
P
l
p
|P
l
p|
· ˆn

1
(
1
)
(
2
1
)
if
1
2
,
0if
2
< ,
where
is the angle between the direction of the incident light
and the surface normal, and is given by
= cos
1
(
ˆ
d · (p P
l
)).
Diffuse lighting is the most significant component of an illumination
model, and if there is more than one light source in the scene, the
intensity of the diffuse reflection component is summed over all the
light sources.
Specular reflection (I
s
)
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Publisher Resources

ISBN: 9781568814773