An Introduction to Ray Tracing (The Morgan Kaufmann Series by Eric Haines

By Eric Haines

The construction of ever extra practical three-D photos is significant to the advance of special effects. The ray tracing process has turn into some of the most well known and robust capability wherein photo-realistic photographs can now be created. The simplicity, beauty and simplicity of implementation makes ray tracing a vital a part of realizing and exploiting cutting-edge computing device graphics.
An advent to Ray Tracing develops from basic ideas to complex purposes, supplying "how-to" methods in addition to an in depth knowing of the medical foundations of ray tracing. it's also richly illustrated with four-color and black-and-white plates. this can be a publication with a purpose to be welcomed by means of all occupied with sleek special effects, snapshot processing, and computer-aided design.

  • Provides sensible "how-to" information
  • Contains top of the range colour plates of pictures created utilizing ray tracing techniques
  • Progresses from a easy figuring out to the complicated technology and alertness of ray tracing

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Extra info for An Introduction to Ray Tracing (The Morgan Kaufmann Series in Computer Graphics)

Example text

In this case , Vd > 0, so the plane points away from the ray. For this example the plane has two sides, so in this case there is no early termination. Calculate vo: vo = - ( 1 * 2 + 0 * 3 + 0 * 4 + ( - 7)) = 5. Now calculate t: t = 5/0 . 5 7 7 = 8 . 66 . Distance t i s positive, s o the point i s not behind the ray. This value represents the distance from the ray's origin to the intersection point. The intersection point components are: Xi = Yi = Zi = 2 + 0 . 5 7 7 * 8 . 66 = 7 3 + 0 . 5 7 7 * 8 .

We com pare the colors between E M , H M , CM , and N M . S u p po s e they a r e a l l s i m i l o r except C M . J BE Let's su ppose A N ow we return to the p a i r F . they're a l l sufficiently s i m i lar. D A H E FG, BG,HG, and EG. S u ppose each pair i s very s i m i lar, except G and E . So we l ook more closely at the reg i o n bounded by G and E. We now compare Kol H MQ,PQ , CQ , a nd RQ. N R c H oM c N P, Q , and R. At t h i s po i nt we' l l assume t h ey're a l l s u ff i c i ently s i m i la r.

The derivation is fairly straightforward, though it involves some time-consuming trigonometric operations. e. are perpendicular). (B l ) · Sp is a unit vector which points from the sphere's center to the north pole of the sphere . Se is a unit vector which points to a reference point on the equator. The parameter u varies along the equator from zero to one. g. if the right hand coordinate system is used, then it varies counterclockwise around the equator). At the poles, define u to be zero. The parameter v varies from zero to one from the south pole to the north (technically speaking, - Sp to + Sp ) .

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