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Course: Pixar in a Box > Unit 6

Lesson 2: Mathematics of depth of field
Computing
Pixar in a Box
Virtual cameras
Mathematics of depth of field
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Light through a pinhole

Google Classroom

Problem

The diagram below shows a ray of light, starting at (8,0) and traveling through a pinhole at (0,0). It continues until it hits an image plane 6 units behind the pinhole at a point (x1,y1).
Where does the ray hit the image plane?
x1=
  • Your answer should be
  • an integer, like 6
  • a simplified proper fraction, like 3/5
  • a simplified improper fraction, like 7/4
  • a mixed number, like 1 3/4
  • an exact decimal, like 0.75
  • a multiple of pi, like 12 pi or 2/3 pi

y1=
  • Your answer should be
  • an integer, like 6
  • a simplified proper fraction, like 3/5
  • a simplified improper fraction, like 7/4
  • a mixed number, like 1 3/4
  • an exact decimal, like 0.75
  • a multiple of pi, like 12 pi or 2/3 pi