static void GenerateVisualization(CircuitAnalyzer analyzer)
{
var width = analyzer.UpperRight.X + Math.Abs(analyzer.LowerLeft.X) + 1;
var height = analyzer.UpperRight.Y + Math.Abs(analyzer.LowerLeft.Y) + 1;
var x = analyzer.LowerLeft.X;
var y = analyzer.LowerLeft.Y;
Program.GenerateBitmapSubsection(analyzer, 0, 0, width, height);
}
static void Main(string[] args)
{
// Summary: given 2 series of direction (U,D,L,R) and distance (positive ints) pairs,
// both describing the path of a wire on a circuit board, both paths originating
// from same point, find the Manhattan distance between the origin and the closest
// intersection of the 2 "wires".
// See unit tests for examples.
var inputText = System.IO.File.ReadAllLines("input.txt");
var circuitAnalyzer = new CircuitAnalyzer();
var wire1 = inputText[0];
var wire2 = inputText[1];
// Small input for testing. Should produce an "R" shape
// wire1 = "U70,R35,D30,L5,D5,L30";
// wire2 = "U35,R10,D10,R10,D10,R10,D15";
Console.WriteLine("Adding path 1...");
var watch = Stopwatch.StartNew();
circuitAnalyzer.AddVectors(wire1);
Console.WriteLine($"Done in {watch.ElapsedMilliseconds}ms");
Console.WriteLine("Adding path 2...");
watch.Restart();
circuitAnalyzer.AddVectors(wire2);
Console.WriteLine($"Done in {watch.ElapsedMilliseconds}ms");
Console.WriteLine($"Distance to closest intersection: {circuitAnalyzer.DistanceBetweenOriginAndClosestIntersection}");
Console.WriteLine($"Smallest path sum at intersection: {circuitAnalyzer.SmallestPathLengthSumAtIntersection}");
// Uncomment next line to generate a visualization
Program.GenerateVisualization(circuitAnalyzer);
}
static void GenerateBitmapSubsection(CircuitAnalyzer analyzer, int startX, int startY, int width, int height)
{
Console.WriteLine($"Width: {width}, height: {height}");
var image = new Image <Rgba32>(width, height);
image.Mutate(ctx => ctx.BackgroundColor(Color.DarkGreen));
int x;
int y;
foreach (var col in analyzer.CellIndex)
{
foreach (var row in col.Value)
{
x = startX + col.Key + Math.Abs(analyzer.LowerLeft.X);
y = startY + row.Key + Math.Abs(analyzer.LowerLeft.Y);
try
{
for (int i = 0; i < 8; i++)
{
image[x + i, y + i] = LineToColor(row.Value.LinesCrossed);
}
}
catch (IndexOutOfRangeException)
{
// path width overflows canvas, ignore IOORExceptions
}
}
}
image.Mutate(ctx => ctx.Resize(new ResizeOptions {
Size = new Size(2000, 0)
}));
Console.WriteLine("Saving scaled image...");
image.Save("image-scaled.png");
}
