/// <summary>
/// Test to see if the two paths are the same in that:
/// 1. They have the same polygon count.
/// 2. There are matching polygons in that:
/// a. Same point count.
/// b. Same orientation.
/// </summary>
public static bool AreSame(ClipExecutionData test, PolygonPath path2)
{
if (test.Solution.Count != path2.Count)
{
return(false);
}
for (var i = 0; i < path2.Count; i++)
{
var polygon1 = path2[i];
// Order to make comparison easier.
polygon1.OrderBottomLeftFirst();
for (var j = 0; j < test.Solution.Count; j++)
{
var polygon2 = test.Solution[j];
// Vertex counts need to match
if (polygon1.Count != polygon2.Count)
{
continue;
}
// Orientations need to match
if (polygon1.Orientation != polygon2.Orientation)
{
continue;
}
// Count the number of points that match in order across the polygons.
// Given both polygons are ordered by bottom left, then
// points at each index should match if they are the same polygon.
var pointMatchCount = polygon1
.Where((point, k) => point == polygon2[k])
.Count();
// Did the point match count equal the vertex count?
if (pointMatchCount != polygon1.Count)
{
continue;
}
// This is a matching polygon so remove from both solutions
// and decrement outer loop index.
path2.RemoveAt(i--);
test.Solution.RemoveAt(j);
// break from inner loop to outer loop
break;
}
}
return(true);
}
private static void ReadExecutionData(IDictionary <int, ClipExecutionData> data, IReadOnlyList <string> lines, ref int lineNumber)
{
const string matchCaption = @"^CAPTION:\s*(\d+)\s*\.\s*(.*)\s*?($|^)";
const string matchClipOperation = @"^CLIPTYPE:\s*(.*)\s*$";
const string matchFillType = @"^FILLTYPE:\s*(.*)\s*$";
var executionData = new ClipExecutionData();
// Read caption and test number
var match = Regex.Match(lines[lineNumber++], matchCaption);
if (!match.Success)
{
throw new Exception($"Expecting caption at line {lineNumber}.");
}
executionData.TestNumber = int.Parse(match.Groups[1].Value);
executionData.Caption = match.Groups[2].Value;
// Read clip type
match = Regex.Match(lines[lineNumber++], matchClipOperation);
if (!match.Success)
{
throw new Exception($"Expecting clip operation at line {lineNumber}.");
}
executionData.ClipOperation = (ClipOperation)Enum.Parse(typeof(ClipOperation), match.Groups[1].Value, true);
// Read fill type
match = Regex.Match(lines[lineNumber++], matchFillType);
if (!match.Success)
{
throw new Exception($"Expecting fill type at line {lineNumber}.");
}
executionData.FillType = (PolygonFillType)Enum.Parse(typeof(PolygonFillType), match.Groups[1].Value, true);
// Read subjects
executionData.Subjects = ReadPath("SUBJECTS", lines, ref lineNumber);
// Read clip
executionData.Clips = ReadPath("CLIPS", lines, ref lineNumber);
// Read solution
executionData.Solution = ReadPath("SOLUTION", lines, ref lineNumber);
data.Add(executionData.TestNumber, executionData);
}