Triangle: -V switch

The -V switch

• Verbose: Gives detailed information about what Triangle is doing.
• Add more `V's for increasing amount of detail. `-VV' gives vertex-by-vertex details, and prints so much that Triangle will run much more slowly. `-VVVV' gives information only a debugger could love.
• `-V' gives information on algorithmic progress and more detailed statistics. Here's an example of the statistics provided:

  Statistics:
   Input vertices: 518
   Input segments: 518
   Input holes: 6
   Mesh vertices: 811
   Mesh triangles: 1110
   Mesh edges: 1926
   Mesh exterior boundary edges: 522
   Mesh interior boundary edges: 0
   Mesh subsegments (constrained edges): 522
  Mesh quality statistics:
   Smallest area: 2.4708e-06 | Largest area: 0.002675
   Shortest edge: 0.0018129 | Longest edge: 0.10057
   Shortest altitude: 0.0011442 | Largest aspect ratio: 4.6264
   Triangle aspect ratio histogram:
   1.1547 - 1.5 : 158 | 15 - 25 : 0
   1.5 - 2 : 366 | 25 - 50 : 0
   2 - 2.5 : 259 | 50 - 100 : 0
   2.5 - 3 : 178 | 100 - 300 : 0
   3 - 4 : 142 | 300 - 1000 : 0
   4 - 6 : 7 | 1000 - 10000 : 0
   6 - 10 : 0 | 10000 - 100000 : 0
   10 - 15 : 0 | 100000 - : 0
   (Aspect ratio is longest edge divided by shortest altitude)
   Smallest angle: 15.024 | Largest angle: 133.2
   Angle histogram:
   0 - 10 degrees: 0 | 90 - 100 degrees: 150
   10 - 20 degrees: 1 | 100 - 110 degrees: 151
   20 - 30 degrees: 379 | 110 - 120 degrees: 68
   30 - 40 degrees: 466 | 120 - 130 degrees: 20
   40 - 50 degrees: 439 | 130 - 140 degrees: 3
   50 - 60 degrees: 441 | 140 - 150 degrees: 0
   60 - 70 degrees: 367 | 150 - 160 degrees: 0
   70 - 80 degrees: 650 | 160 - 170 degrees: 0
   80 - 90 degrees: 195 | 170 - 180 degrees: 0
  Memory allocation statistics:
   Maximum number of vertices: 811
   Maximum number of triangles: 1110
   Maximum number of subsegments: 522
   Maximum number of encroached subsegments: 1
   Maximum number of bad triangles: 531
   Maximum number of stacked triangle flips: 4
   Approximate heap memory use (bytes): 95440
  Algorithmic statistics:
   Number of incircle tests: 7362
   Number of 2D orientation tests: 15346
   Number of triangle circumcenter computations: 292
  

  These are described on the Statistics page.

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jrs@cs.berkeley.edu