One function, mutiple types of parameters?

[hoknamahn]

Hi!

I want to create dso for custom VEX function, say for the addition of two numbers of various types

Add(number1, number2)

I can create a callback like that

static void
Add(int, void *argv[], void *)
{
  // Some code
}

And I think what I can register this function two or more times with different signatures like

new VEX_VexOp("Add@&III", Add); // for integer numbers
new VEX_VexOp("Add@&FFF", Add); // for float numbers
...

How I can know, what type the input parameters?

[AndrewVK]

Just call appropriate evaluation function

static void
vsocker_Evaluate(int, void *argv[], void *)
{
   UT_Vector3  *result	= (UT_Vector3 *)argv[0];
   float	*u  = (float *)argv[1];
   float	*v  = (float *)argv[2];
   UT_Vector3  *col1  = (UT_Vector3 *)argv[3];
   UT_Vector3  *col2  = (UT_Vector3 *)argv[4];
   float	*flt  = (float *)argv[5];
....
....
....
}

static void
fsocker_Evaluate(int, void *argv[], void *)
{
   float  *result	= (float *)argv[0];
   float	*u  = (float *)argv[1];
   float	*v  = (float *)argv[2];
   float  *width  = (float *)argv[3];
   float  *depth  = (float *)argv[4];
....
....
....
}

static void
vpsocker_Evaluate(int, void *argv[], void *)
{
   UT_Vector3  *result	= (UT_Vector3 *)argv[0];
   UT_Vector3  *pos  = (UT_Vector3 *)argv[1];
   UT_Vector3  *col1  = (UT_Vector3 *)argv[2];
   UT_Vector3  *col2  = (UT_Vector3 *)argv[3];
   float	*flt  = (float *)argv[4];
....
....
....
}

static void
fpsocker_Evaluate(int, void *argv[], void *)
{
   float  *result	= (float *)argv[0];
   UT_Vector3  *pos  = (UT_Vector3 *)argv[1];
   float  *width  = (float *)argv[2];
   float  *depth  = (float *)argv[3];
....
....
....
}

void
newVEXOp(void *)
{
	new VEX_VexOp("socker@&VFFVVF",
 	 vsocker_Evaluate,
 	 (VEX_OP_CONTEXT|VEX_SHADING_CONTEXT),
 	 0,
 	 0);
	new VEX_VexOp("socker@&FFFFF",
 	 fsocker_Evaluate,
 	 (VEX_OP_CONTEXT|VEX_SHADING_CONTEXT),
 	 0,
 	 0);
	new VEX_VexOp("socker@&VVVVF",
 	 vpsocker_Evaluate,
 	 (VEX_OP_CONTEXT|VEX_SHADING_CONTEXT),
 	 0,
 	 0);
	new VEX_VexOp("socker@&FVFF",
 	 fpsocker_Evaluate,
 	 (VEX_OP_CONTEXT|VEX_SHADING_CONTEXT),
 	 0,
 	 0);

}

[hoknamahn]

Hehehe... So simple