parameterized function

[daniel86]

Hi everyone,

I am using a C++ library to simulate some physics. In order to do some batch processing, I need to generate automatically an array of function pointers or a parametrized function. Here is what I am doing:

bool exampleFunc (double x, double y, double z){
 return {x <= 2 && x >= 1}
}

int main{
 Solid exampleSolid = new FuncSolid(exampleFunc);
 void simulate(exampleSolid);
 return 0;
}

where FuncSolid is the library class. I want to do a lot of these simulations with different functions controlled by a parameter:

typedef bool (*FuncSolidPointer) ( double x, double y, double z );

FuncSolidPointer Functions[100];

for (int i = 0; i < 100; i++){
 bool exampleFunc (double x, double y, double z){
  return {x <= 2 + i/100 && x >= 1}
 }
 Functions[i] = exampleFunc;
}

int main{
 for (int i = 0; i < 100; i++){
  Solid exampleSolid = new FuncSolid(Functions[i]);
  void simulate(exampleSolid);
  return 0;
 }
}

This would be easy, if I could just add an argument to the FuncSolid constructor, but the class is defined in the library does not expect an additional parameter. I tried to change that, but this affects a lot of other classes.
I know that I cannot place a for statement where the code is not executed but since none of the solutions I thought of work I have to use wrong code to show what I want to do. Does anyone have an idea how to do that?

Thanks in advance,

Daniel

It would also be helpful if someone would confirm that this is not possible!

[mik2718]

Maybe create your array statically, e.g.

bool exampleFunc1 (double x, double y, double z}
{
...
}

bool exampleFunc2 (double x, double y, double z)
{
...
}

typedef bool (*FuncSolidPointer) ( double x, double y, double z );

// create and initialise global array of function pointers
FuncSolidPtr funcarray[100] = 
{
  &exampleFunc1,
  &exampleFunc2,
  ...
};

I think this should work