VEX : get a polygon primitive's points

gistfile1.txt

i@prim;
v@uv;
float dist = xyzdist(1, @P, @prim, @uv);
//Above gets the prim(n) and prim(uv) for a given point position
//Also the distance between the given point and the prim returned
//Although all we really need is the primitive number

//--

//Create array to store the primitive's point numbers
int primpoints[];
v@primpoints;//This vector is used to store the 3 points instead of using an array, due to a limit with array attributes. 

NOTE:
Basically if you want to access the array in another wrangle further down the chain, you need to use a data type other than an array instead, a vector or matrix can be used to store array like data structures.

//Get the number of vertex for a given prim
int nvtx = primvertexcount(1, @prim); 

//Loop over the vertercies to find their associated points
for (int i = 0; i < nvtx; i++){

    //Get the linear vertex numbers for the prim(n)
    int linearvertex = vertexindex(1, @prim, i);

    //Get the point number from the linear vertex number
    int vertexpoint = vertexpoint(1, linearvertex); 

    //Put point numbers into the points array
    primpoints[i] = vertexpoint;
    @primpoints[i] = vertexpoint;
}

//Display primitive's point numbers
//printf("%g \n", points);