internal static c_line_segment[] parse_path(string input_path)
{
List <c_line_segment> results = new List <c_line_segment>();
c_vector previous_position = new c_vector();
int total_distance = 0;
foreach (string input_direction in input_path.Split(","))
{
c_vector new_position = new c_vector(previous_position);
int input_direction_magnitude = int.Parse(input_direction.Substring(1));
switch (input_direction[0])
{
case 'L': new_position.x -= input_direction_magnitude; break;
case 'R': new_position.x += input_direction_magnitude; break;
case 'D': new_position.y -= input_direction_magnitude; break;
case 'U': new_position.y += input_direction_magnitude; break;
}
results.Add(new c_line_segment(previous_position, total_distance, new_position));
total_distance += new_position.taxi_distance(previous_position);
previous_position = new_position;
}
return(results.ToArray());
}
private c_scanner(
c_vector input_scanner,
c_vector[] input_beacons)
{
scanner = input_scanner;
beacons = input_beacons;
}
public static c_matrix scale(c_vector s)
{
c_matrix result = identity();
result.values[0, 0] *= s.x;
result.values[1, 1] *= s.y;
result.values[2, 2] *= s.z;
return(result);
}
public static c_matrix translate(c_vector t)
{
c_matrix result = identity();
result.values[0, 3] += t.x;
result.values[1, 3] += t.y;
result.values[2, 3] += t.z;
return(result);
}
// create a new scanner that is equivalent to this, but with operation applied to all the objects.
private c_scanner apply(c_matrix operation)
{
c_vector result_scanner = operation.multiply(scanner);
c_vector[] result_beacons = new c_vector[beacons.Length];
for (int i = 0; i < beacons.Length; i++)
{
result_beacons[i] = operation.multiply(beacons[i]);
}
return(new c_scanner(result_scanner, result_beacons));
}
public c_scanner(c_input_reader input_reader)
{
List <c_vector> beacon_list = new List <c_vector>();
while (input_reader.has_more_lines())
{
string input_line = input_reader.read_line();
if (string.IsNullOrEmpty(input_line))
{
break;
}
int[] input_numbers = input_line.Split(",").Select(x => int.Parse(x)).ToArray();
beacon_list.Add(new c_vector(input_numbers[0], input_numbers[1], input_numbers[2]));
}
scanner = new c_vector(0, 0, 0);
beacons = beacon_list.ToArray();
}
public c_vector multiply(c_vector vector)
{
// applies the current operation to the inputted vector.
c_vector result = new c_vector();
result.x = vector.x * this.values[0, 0]
+ vector.y * this.values[0, 1]
+ vector.z * this.values[0, 2]
+ this.values[0, 3];
result.y = vector.x * this.values[1, 0]
+ vector.y * this.values[1, 1]
+ vector.z * this.values[1, 2]
+ this.values[1, 3];
result.z = vector.x * this.values[2, 0]
+ vector.y * this.values[2, 1]
+ vector.z * this.values[2, 2]
+ this.values[2, 3];
return(result);
}
public c_line_segment(c_vector s, int d, c_vector e)
{
start = s;
base_distance = d;
size = new c_rectangle(s, e);
}
public c_intersection(c_vector p, int t_d)
{
position = p;
total_distance = t_d;
}
