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Polygon Clipping

Polygon Clipping. CS5600 Computer Graphics Rich Riesenfeld Spring 2006. Lecture Set 5. Ex: Simple Convex. Ex: Multiple Components. Nonconvex with Many Edges. Polygons : Before Clipping. Top Clip Boundary. Polygons: Clip on Top. Right Clip Boundary. Polygons: Clip on Right.

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Polygon Clipping

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  1. Polygon Clipping CS5600 Computer Graphics Rich Riesenfeld Spring 2006 Lecture Set 5

  2. Ex: Simple Convex CS5600

  3. Ex: Multiple Components CS5600

  4. Nonconvex with Many Edges CS5600

  5. Polygons : Before Clipping CS5600

  6. Top Clip Boundary Polygons: Clip on Top CS5600

  7. Right Clip Boundary Polygons: Clip on Right CS5600

  8. Bottom Clip Boundary Polygons: Clip on Bottom CS5600

  9. LeftClip Boundary Polygons: Clip on Left CS5600

  10. Polygons: Clipped Polygon CS5600

  11. Begin Animated Recap CS5600

  12. Polygons: Before Clipping CS5600

  13. Top Clip Boundary Polygons: Clip on Top CS5600

  14. Top Clip Boundary Polygons: Clip on Top CS5600

  15. Right Clip Boundary Polygons: Clip on Right CS5600

  16. Right Clip Boundary Polygons: Clip on Right CS5600

  17. Bottom Clip Boundary Polygons: Clip on Bottom CS5600

  18. Bottom Clip Boundary Polygons: Clip on Bottom CS5600

  19. LeftClip Boundary Polygons: Clip on left CS5600

  20. LeftClip Boundary Polygons: Clip on left CS5600

  21. Polygons: Fully Clipped CS5600

  22. Polygons: Clip on Left Left Clip Boundary CS5600

  23. Polygons: Clipped Polygon CS5600

  24. End Animated Recap CS5600

  25. Hodgeman-Sutherland

  26. Polygons: Case 1 IN OUT S Polygon being clipped Clip boundary P: output CS5600

  27. Case 1: S&Pboth IN Action: OutputP

  28. Polygons: Case 2 IN OUT P S i output CS5600

  29. Case 2: SIN; POUT Action: Outputi (Swas already output under Case 1)

  30. Polygons: Case 3 IN OUT P S (no output) CS5600

  31. Case 3: S&Pboth OUT Action: None

  32. Polygons: Case 4 P: second output IN OUT S i: first output CS5600

  33. Case 4: SOUT; PIN Action: Outputi and P

  34. Action:OutputP Case 1:S&Pboth IN Case 2: SIN; POUT Action:Outputi (Salready output under Case 1) Case 4:SOUT;PIN Case 3: S & P both OUT Action:OutputiandP Action:None

  35. Hodgeman-Sutherland CS5600

  36. Hodgeman-Sutherland CS5600

  37. Hodgeman-Sutherland: Top CS5600

  38. Hodgeman-Sutherland: Top CS5600

  39. Hodgeman-Sutherland: Bottom CS5600

  40. Hodgeman-Sutherland: Bottom CS5600

  41. Hodgeman-Sutherland: Bottom CS5600

  42. Hodgeman-Sutherland: Right CS5600

  43. Hodgeman-Sutherland: Right This case is trivial: donothing CS5600

  44. Hodgeman-Sutherland: Left CS5600

  45. Hodgeman-Sutherland: Left CS5600

  46. Hodgeman-Sutherland: Left CS5600

  47. Hodgeman-Sutherland: Done CS5600

  48. Begin Animated Recap CS5600

  49. CS5600

  50. Top Done

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