public void alignPathsDirectionsWithSource(ref Paths segs, ref Paths sourceSegs)
{
// The assumption is that a seg in segs will be on only one of the sourceSegs.
foreach (Path seg in segs)
{
if (seg == null || seg.Count < 2)
{
continue;
}
IntPoint first = seg[0];
IntPoint second = seg[1];
bool foundSource = false;
foreach (Path src in sourceSegs)
{
// setp through each src line to see if first falls on it.
for (int k = 0; k < src.Count - 1; k++)
{
if (PointOnLineSegment(first, src[k], src[k + 1], true))
{
//Debug.Log(first.X + ", "+ first.Y + " on line " + src[k].X + ", " +src[k].Y + "->" +src[k+1].X + ", " + src[k+1].Y);
if (AXSegment.pointsAreEqual(second, src[k]) || (Pather.Distance(src[k], second) < Pather.Distance(src[k], first)))
{
foundSource = true;
seg.Reverse();
}
break;
}
}
if (foundSource)
{
break;
}
}
}
}
// This is used with rails since the Clipper Lib does not support
// difference with the lines of the clip object removed.
// In other words, to open a door in a closed polygon,
// we use this to remove the edges that were originally on the clip object
// leaving only the line segments of the subject that were not inside the clip shape.
public Paths assembleRailPathsFromClippedSegments(AXClipperLib.PolyTree solutionRail)
{
// Take all the clipped segments and connect
Paths clippedSegments = Clipper.OpenPathsFromPolyTree(solutionRail);
//Debug.Log ("clipped segments " + clippedSegments.Count);
//Archimatix.printPaths(clippedSegments);
Dictionary <Path, AXSegment> axsegs = new Dictionary <Path, AXSegment>();
foreach (Path p in clippedSegments)
{
axsegs.Add(p, new AXSegment(p));
}
int cc = 0;
foreach (Path clipseg in clippedSegments)
{
//Debug.Log ("PASS["+cc+"] " + AXGeometryTools.Utilities.pathToString(clipseg));
if (axsegs[clipseg].prev != null && axsegs[clipseg].next != null)
{
//Debug.Log("Already done");
cc++;
continue;
}
int ccc = 0;
foreach (Path compseg in clippedSegments)
{
if (compseg == clipseg)
{
//Debug.Log("COMP["+cc+"]["+ccc+"] skip same");
ccc++;
continue;
}
//Debug.Log ("COMP["+cc+"]["+ccc+"]"+AXGeometryTools.Utilities.pathToString(clipseg)+ " with "+AXGeometryTools.Utilities.pathToString(compseg));
if (axsegs[clipseg].prev == null && axsegs[compseg].next == null)
{
if (AXSegment.pointsAreEqual(clipseg[0], compseg[1]))
{
axsegs[clipseg].prev = axsegs[compseg];
axsegs[compseg].next = axsegs[clipseg];
//Debug.Log ("prev");
}
}
if (axsegs[clipseg].prev == null && axsegs[compseg].prev == null)
{
if (AXSegment.pointsAreEqual(clipseg[0], compseg[0]))
{
compseg.Reverse();
axsegs[clipseg].prev = axsegs[compseg];
axsegs[compseg].next = axsegs[clipseg];
}
}
if (axsegs[clipseg].next == null && axsegs[compseg].prev == null)
{
if (AXSegment.pointsAreEqual(clipseg[1], compseg[0]))
{
axsegs[clipseg].next = axsegs[compseg];
axsegs[compseg].prev = axsegs[clipseg];
}
}
if (axsegs[clipseg].next == null && axsegs[compseg].next == null)
{
if (AXSegment.pointsAreEqual(clipseg[1], compseg[1]))
{
compseg.Reverse();
axsegs[clipseg].next = axsegs[compseg];
axsegs[compseg].prev = axsegs[clipseg];
}
}
ccc++;
}
cc++;
}
// now all segs should be linked.
// go through each that has no prev and create new paths...
Paths retPaths = new Paths();
foreach (KeyValuePair <Path, AXSegment> item in axsegs)
{
Path path = item.Key;
if (item.Value.prev == null)
{ // now crawl up the nexts adding pt[1]s
AXSegment next = item.Value;
while ((next = next.next) != null)
{
path.Add(next.path[1]);
}
retPaths.Add(path);
}
}
return(retPaths);
}