source:
data/branches/presentation/scripts/lua_extra_functions
@
4183
| Last change on this file since 4183 was 3991, checked in by bensch, 18 years ago | |
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| File size: 409 bytes | |
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| 1 | !--------------- Copy this to the beginning of a lua script to use the functions ---------------! |
| 2 | |
| 3 | -- Initialises the random number generator |
| 4 | randinit = false |
| 5 | function randInit() |
| 6 | |
| 7 | if not randinit then |
| 8 | math.randomseed(os.clock()) |
| 9 | randinit = true |
| 10 | end |
| 11 | |
| 12 | end |
| 13 | |
| 14 | |
| 15 | -- Returns the distance between (x1,x2,x3) and (y1,y2,y3) |
| 16 | function dist( x1,x2,x3, y1,y2,y3 ) |
| 17 | |
| 18 | return math.sqrt( (x1-y1)^2 + (x2-y2)^2 + (x3-y3)^2 ) |
| 19 | |
| 20 | end |
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