transpose method
Transposes this IntersectionMatrix.
@return this IntersectionMatrix
as a convenience
Implementation
IntersectionMatrix transpose() {
int temp = matrix[1][0];
matrix[1][0] = matrix[0][1];
matrix[0][1] = temp;
temp = matrix[2][0];
matrix[2][0] = matrix[0][2];
matrix[0][2] = temp;
temp = matrix[2][1];
matrix[2][1] = matrix[1][2];
matrix[1][2] = temp;
return this;
}