The -V switch

• Verbose: Gives detailed information about what Triangle is doing.
• Add more `V's for increasing amount of detail.
• `-V' gives information on algorithmic progress and more detailed statistics. Here's an example of the statistics provided:

  Statistics:
  
    Input points: 29
    Input segments: 29
    Input holes: 1
  
    Mesh points: 67
    Mesh triangles: 69
    Mesh edges: 136
    Mesh boundary edges: 65
    Mesh segments: 65
  
  Mesh quality statistics:
  
    Smallest area:        0.0006784   |  Largest area:         0.023543
    Shortest edge:         0.014881   |  Longest edge:           0.1455
    Shortest altitude:     0.011629   |  Largest aspect ratio:   3.9151
  
    Aspect ratio histogram:
    1.1547 - 1.5       :         7    |     15 - 25         :         0
       1.5 - 2         :        40    |     25 - 50         :         0
         2 - 2.5       :        15    |     50 - 100        :         0
       2.5 - 3         :         4    |    100 - 300        :         0
         3 - 4         :         3    |    300 - 1000       :         0
         4 - 6         :         0    |   1000 - 10000      :         0
         6 - 10        :         0    |  10000 - 100000     :         0
        10 - 15        :         0    | 100000 -            :         0
    (Triangle aspect ratio is longest edge divided by shortest altitude)
  
    Smallest angle:          20.248   |  Largest angle:          125.12
  
    Angle histogram:
        0 -  10 degrees:         0    |     90 - 100 degrees:         9
       10 -  20 degrees:         0    |    100 - 110 degrees:         1
       20 -  30 degrees:         8    |    110 - 120 degrees:         2
       30 -  40 degrees:        37    |    120 - 130 degrees:         1
       40 -  50 degrees:        31    |    130 - 140 degrees:         0
       50 -  60 degrees:        29    |    140 - 150 degrees:         0
       60 -  70 degrees:        30    |    150 - 160 degrees:         0
       70 -  80 degrees:        33    |    160 - 170 degrees:         0
       80 -  90 degrees:        26    |    170 - 180 degrees:         0
  
  Memory allocation statistics:
  
    Maximum number of points: 67
    Maximum number of triangles: 69
    Maximum number of segments: 65
    Maximum number of encroached segments: 12
    Maximum number of bad triangles: 5
    Approximate heap memory use (bytes): 11760
  
  Algorithmic statistics:
  
    Number of incircle tests: 302
    Number of orientation tests: 415
    Number of circumcenter computations: 5
  

  These are described on the Statistics page.
• `-VV' gives point-by-point details, and will print so much information that Triangle will run much more slowly.
• `-VVV' gives information only a debugger could love.