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ConstructiveSolidGeometry.jl A constructive solid geometry and ray - PowerPoint PPT Presentation

ConstructiveSolidGeometry.jl A constructive solid geometry and ray tracing package for scientific simulation Speaker: John Tramm 1 Outline Intro to constructive solid geometry (CSG) Intro to ray tracing Motivation for package


  1. ConstructiveSolidGeometry.jl A constructive solid geometry and ray tracing package for scientific simulation Speaker: John Tramm 1

  2. Outline • Intro to constructive solid geometry (CSG) • Intro to ray tracing • Motivation for package • Functionality • Interesting implementation details • Demo 2

  3. What is Constructive Solid Geometry (CSG)? 3

  4. What is Ray Tracing? • Ray • Origin • Direction • Ray tracing determines: • Which region a point is in • Closest intersection 4

  5. Motivation for Package • Needed by some simulation Geometry methods & Ray Tracing • Particularly reactor physics • Needed by students in course 22 (Nuclear Engineering) Collision • No existing CSG/ray tracing Method of Monte Carlo Probability Characteristics packages in Julia Method 5

  6. ConstructiveSolidGeometry.jl Functionality • Create primitive 2D/3D shapes • Logically assemble shapes • Plot slices • Performs ray tracing • Well documented with annotated examples • Enables easy development of physics applications 6

  7. Implementation Detail of Note: Expressions • Logical construction of regions is a tree • (1∩2) ∩~(3 ∪ (4 ∪ 5)) • Julia Expressions make this easy • Recursive function to navigate Julia Expression tree 1 2 3 4 5 7

  8. Quick Demo 8

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