2 Geometry

• 2.1 Introduction to Geometry
• 2.2 Surface Definitions
• 2.3 Particle Tracing
• 2.4 The Surface Search Loop
  • 2.4.1 Figure 5(a)-Dot Product Test
  • 2.4.2 Figure 5(b)-Intersection Lies Outside of Surface
  • 2.4.3 Figure 5(c)-Surface of Intersection Lies Behind Emitting Point
• 2.5 Implementation
• 2.6 Shading