vitalif
/
openscad
mirror of https://github.com/vitalif/openscad
1
0
Fork 0
Code Issues Releases Wiki Activity

Added a rands() function that returns a vector of random numbers. 

the function takes either 3 arguments or 4
  rands(min,max,num)
or
  rands(min,max,num,seed)

git-svn-id: http://svn.clifford.at/openscad/trunk@574 b57f626f-c46c-0410-a088-ec61d464b74c
stl_dim
kintel 2010-10-31 02:51:11 +00:00
parent 1611f6230e
commit fb7ed8cf01
1 changed files with 39 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

39
src/func.cc
View File

@ -124,6 +124,44 @@ Value builtin_sign(const Context *, const QVector<QString>&, const QVector<Value
return Value();
}
double frand()
{
return rand()/(double(RAND_MAX)+1);
}
double frand(double min, double max)
{
return (min>max) ? frand()*(min-max)+max : frand()*(max-min)+min;
}
Value builtin_rands(const Context *, const QVector<QString>&, const QVector<Value> &args)
{
if (args.size() == 3 && args[0].type == Value::NUMBER && args[1].type == Value::NUMBER && args[2].type == Value::NUMBER)
{
srand((unsigned int)time(0));
}
else if (args.size() == 4 && args[0].type == Value::NUMBER && args[1].type == Value::NUMBER && args[2].type == Value::NUMBER && args[3].type == Value::NUMBER)
{
srand((unsigned int)args[3].num);
}
else
{
return Value();
}
Value v;
v.type = Value::VECTOR;
for(int i=0; i<args[2].num; i++)
{
Value * r = new Value(frand(args[0].num,args[1].num));
v.vec.append(r);
}
return v;
}
Value builtin_min(const Context *, const QVector<QString>&, const QVector<Value> &args)
{
if (args.size() >= 1 && args[0].type == Value::NUMBER) {
@ -300,6 +338,7 @@ void initialize_builtin_functions()
{
builtin_functions["abs"] = new BuiltinFunction(&builtin_abs);
builtin_functions["sign"] = new BuiltinFunction(&builtin_sign);
builtin_functions["rands"] = new BuiltinFunction(&builtin_rands);
builtin_functions["min"] = new BuiltinFunction(&builtin_min);
builtin_functions["max"] = new BuiltinFunction(&builtin_max);
builtin_functions["sin"] = new BuiltinFunction(&builtin_sin);