Download e-book for iPad: An Introduction to Ray Tracing (The Morgan Kaufmann Series by Eric Haines

By Eric Haines

ISBN-10: 0122861604

ISBN-13: 9780122861604

The production of ever extra life like 3-D photographs is relevant to the advance of special effects. The ray tracing approach has develop into some of the most renowned and robust ability during which photo-realistic photographs can now be created. The simplicity, splendor and straightforwardness of implementation makes ray tracing a vital a part of knowing and exploiting state of the art desktop graphics.
An advent to Ray Tracing develops from basic ideas to complex functions, delivering "how-to" strategies in addition to an in depth figuring out of the medical foundations of ray tracing. it's also richly illustrated with four-color and black-and-white plates. it is a booklet so that it will be welcomed by means of all curious about glossy special effects, picture processing, and computer-aided design.

  • Provides sensible "how-to" information
  • Contains prime quality colour plates of pictures created utilizing ray tracing techniques
  • Progresses from a easy realizing to the complex technological know-how and alertness of ray tracing

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Additional resources for An Introduction to Ray Tracing (The Morgan Kaufmann Series in Computer Graphics)

Example text

873 * 3. 744] The unit vector normal is, by (AS) : [ ( 1 . 368 - 0)/3 (2. 269 - 5)/3] [ - 0. 395 - 0 . 1 23 - 0. 9 1 0] . 2 Intersection of the Sphere - Geometric Solution Now that a simple sphere intersection routine has been outlined, the next question is, " How can we make it run faster? " Some basic ideas about computing efficiency are useful here . One observation which generally holds is that using the square root function should be avoided when possible. Check timings on the machine used: often the sqrt() function takes 1 5 -30 times as long as a multiply.

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. These are no pairs o f colors l eft to exa m i ne , so w e ' re now done.

Looking at equation (AS), we see that B is calculated by a multiplication by 2. Instead, calculate NB, which is set to - B/2 . Substituting - 2 * NB for B in (A6) and simplifying: t = 4* C) * N---!. B)- -'( --2* N---L. ±--'--'J((-'----B)2 --2 --L - 2 - ( - 2 * NB ) ± 2 * J(NB2 - C) 2 (A 1 6) = NB ± J(NB2 - C). These equations are almost as clean as geometric equation (A1 4), except for the ' ± ' operation. From substituting - 2 * NB for B in (AS), NB is simply: NB = Xct * ( Xe - Xo ) + Yct * ( Ye - Yo ) + Zct * ( Ze - Z o ) .

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An Introduction to Ray Tracing (The Morgan Kaufmann Series in Computer Graphics) by Eric Haines

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