/**
* Converts this matrix formated trifocal into a 27 element vector:<br>
* m.data[ i*9 + j*3 + k ] = T_i(j,k)
*
* @param m Output: Trifocal tensor encoded in a vector
*/
public void convertTo(DenseMatrix64F m) {
if (m.getNumElements() != 27)
throw new IllegalArgumentException("Input matrix/vector must have 27 elements");
for (int i = 0; i < 9; i++) {
m.data[i] = T1.data[i];
m.data[i + 9] = T2.data[i];
m.data[i + 18] = T3.data[i];
}
}
public static long fillArrays(DenseMatrix64F mat, int numTrials) {
long prev = System.currentTimeMillis();
for (int i = 0; i < numTrials; i++) {
Arrays.fill(mat.data, 0, mat.getNumElements(), 2);
}
long curr = System.currentTimeMillis();
return curr - prev;
}
public static long fillManual(DenseMatrix64F mat, int numTrials) {
long prev = System.currentTimeMillis();
for (int i = 0; i < numTrials; i++) {
final int size = mat.getNumElements();
for (int j = 0; j < size; j++) {
mat.set(j, 2);
}
}
long curr = System.currentTimeMillis();
return curr - prev;
}
/**
* Returns the number of elements in this matrix, which is equal to the number of rows times the
* number of columns.
*
* @return The number of elements in the matrix.
*/
public int getNumElements() {
return mat.getNumElements();
}