//offsets an input line by a given distance inside a poly
public static Line2d OffsetLineInsidePoly(Line2d lineInp, Polygon2d poly, double distance)
{
if (lineInp == null || !ValidateObject.CheckPoly(poly))
{
return(null);
}
Point2d ptStart = OffsetLinePointInsidePoly(lineInp, lineInp.StartPoint, poly, distance);
Vector2d vec = new Vector2d(lineInp.StartPoint, ptStart);
Point2d ptEnd = VectorUtility.VectorAddToPoint(lineInp.EndPoint, vec);
return(new Line2d(ptStart, ptEnd));
}
//offsets an input line by a given distance
public static Line2d Offset(Line2d lineInp, double distance)
{
if (lineInp == null)
{
return(null);
}
Point2d ptStart = OffsetLinePoint(lineInp, lineInp.StartPoint, distance);
Vector2d vec = new Vector2d(lineInp.StartPoint, ptStart);
Point2d ptEnd = VectorUtility.VectorAddToPoint(lineInp.EndPoint, vec);
return(new Line2d(ptStart, ptEnd));
}
internal static Dictionary <string, object> AddPointToFitPoly(Polygon2d poly, Polygon2d containerPoly, double distance = 16, double area = 0, double thresDistance = 10, double recompute = 5)
{
if (!ValidateObject.CheckPoly(poly))
{
return(null);
}
if (distance < 1)
{
return(null);
}
Dictionary <string, object> lineOffsetCheckObj = ValidateObject.CheckLinesOffsetInPoly(poly, containerPoly, distance);
List <int> indicesFalse = (List <int>)lineOffsetCheckObj["IndicesFalse"];
List <List <Point2d> > pointsFalse = (List <List <Point2d> >)lineOffsetCheckObj["PointsOutside"];
List <Point2d> probPointList = new List <Point2d>();
List <Point2d> polyNewPoints = new List <Point2d>();
List <Line2d> falseLines = new List <Line2d>();
Point2d ptNewEnd = new Point2d(0, 0);
Point2d otherPt = new Point2d(0, 0);
Point2d probPt = new Point2d(0, 0);
Line2d line = new Line2d(ptNewEnd, otherPt);
int count = 0, maxTry = 50;
double ratio = 0, increment = .25;
bool added = false, checkOffPtNew = false;
for (int i = 0; i < poly.Points.Count; i++)
{
int a = i, b = i + 1;
if (i == poly.Points.Count - 1)
{
b = 0;
}
polyNewPoints.Add(poly.Points[a]);
if (indicesFalse[i] > -1)
{
falseLines.Add(poly.Lines[i]);
}
if (poly.Lines[i].Length > thresDistance &&
indicesFalse[i] > -1 && pointsFalse[i] != null && pointsFalse[i].Count == 1 && !added && LayoutUtility.CheckLineGetsExternalWall(poly.Lines[i], containerPoly))
{
probPointList.AddRange(pointsFalse[i]);
probPt = pointsFalse[i][0];
line = poly.Lines[i];
Point2d midPt = LineUtility.LineMidPoint(line);
if (line.StartPoint.Compare(probPt))
{
otherPt = line.EndPoint;
}
else
{
otherPt = line.StartPoint;
}
Vector2d vecToOther = new Vector2d(probPt, otherPt);
while (!checkOffPtNew && count < maxTry && ratio < 0.9)
{
ratio += increment;
ptNewEnd = VectorUtility.VectorAddToPoint(probPt, vecToOther, ratio);
Point2d offPtNew = LineUtility.OffsetLinePointInsidePoly(line, ptNewEnd, poly, distance);
checkOffPtNew = GraphicsUtility.PointInsidePolygonTest(poly, offPtNew);
count += 1;
}
polyNewPoints.Add(ptNewEnd);
added = true;
}
}
Polygon2d polyAdded = new Polygon2d(polyNewPoints, 0);
return(new Dictionary <string, object>
{
{ "PolyAddedPts", (polyAdded) },
{ "ProblemPoint", (probPt) },
{ "IsAdded", (added) },
{ "PointAdded", (ptNewEnd) },
{ "Trials", (count) },
{ "FinalRatio", (ratio) },
{ "ProblemLine", (line) },
{ "ProblemPtsList", (probPointList) },
{ "FalseLineList", (falseLines) }
});
}