将通道中的值传递给Golang中的可变参数函数

Question

I am writing a Robotic Manipulation library in Golang, and I use a function of the form matrix.Product(a *matrix.DenseMatrix, bs ...*matrix.DenseMatrix) from the skelterjohn/go.matrix library that I am using for multiplying matrices. As can be seen, the first argument is a static argument, in the sense that only 1 argument goes there, the second one is a variadic argument, in the sense multiple arguments can go there. So lets say I have 6 joints and each joint corresponds to a structure in my code of the form struct{matrix, angle}. I store these 6 structs in an array and pass them to a function that extracts each matrix from this array of structs and puts them in a buffered channel. Now, here is where I have a logic breakdown....O_O!. How do I write a code such that, the 6 matrices in this channel are extracted and placed as arguments to the Product function above ? My code that's trying to do the above is as follows:

    // Struct with a matrix and angle
    type TwistnTheta struct {
        Tw *gm.DenseMatrix
        Th float64
    }

    // Param : arr - Array of structs
    // Param : defConf - Default Orientation struct
    func ReqFinalConfig(arr []TwistnTheta, defConf DefaultOrientation) *gm.DenseMatrix {
        ch1 := make(chan *gm.DenseMatrix, len(arr))
        for i := 0; i < len(arr); i++ {
            ch1 <- HomConfig(arr[i].Tw.Array(), &arr[i].Th) //Pushes matrices into channel
            //fmt.Println(<-ch1, "
")
        }
        // I extract values from the channels manually and pass them into the function....
        // I want to automate this argument passing....
        return gm.Product(<-ch1 , <-ch1, <-ch1, <-ch1, defConf.ReqDefConfig())
    }

EDIT: Figured out the logic, here is what I did,

    func ReqFinalConfig(arr []TwistnTheta, defConf DefaultOrientation) *gm.DenseMatrix {
        ch1 := make(chan *gm.DenseMatrix, len(arr))
        //var m1 *gm.DenseMatrix
        for i := 0; i < len(arr); i++ {
            ch1 <- HomConfig(arr[i].Tw.Array(), &arr[i].Th)
            //fmt.Println(HomConfig(arr[i].Tw.Array(), &arr[i].Th), "
")
        }
        close(ch1)
        return extractChan(ch1,defConf)
    }

    func extractChan(ch chan *gm.DenseMatrix, defConf DefaultOrientation) *gm.DenseMatrix {
        var Ms []*gm.DenseMatrix
        ms1 := <-ch
        for val := range ch {
            Ms = append(Ms,val)
        }
        for i := 0; i < len(Ms); i++ {
            ms1 = gm.Product(ms1, Ms[i])
        }
        return gm.Product(ms1, defConf.ReqDefConfig())
    }