/// <summary>
/// Extends a straight line at both ends
/// </summary>
/// <param name="line"></param>
/// <param name="distance"></param>
/// <search></search>
public static Autodesk.DesignScript.Geometry.Line ExtendAtBothEnds(this Autodesk.DesignScript.Geometry.Curve line, double distance)
{
Autodesk.DesignScript.Geometry.Point stPt = line.StartPoint;
Autodesk.DesignScript.Geometry.Point endPt = line.EndPoint;
Autodesk.DesignScript.Geometry.Vector vec1 = Autodesk.DesignScript.Geometry.Vector.ByTwoPoints(endPt, stPt);
Autodesk.DesignScript.Geometry.Vector vec2 = Autodesk.DesignScript.Geometry.Vector.ByTwoPoints(stPt, endPt);
Autodesk.DesignScript.Geometry.Point newStPt = stPt.Translate(vec1, distance) as Autodesk.DesignScript.Geometry.Point;
Autodesk.DesignScript.Geometry.Point newEndPt = endPt.Translate(vec2, distance) as Autodesk.DesignScript.Geometry.Point;
Autodesk.DesignScript.Geometry.Line newLine = Autodesk.DesignScript.Geometry.Line.ByStartPointEndPoint(newStPt, newEndPt);
//Dispose redundant geometry
stPt.Dispose();
endPt.Dispose();
vec1.Dispose();
vec2.Dispose();
newStPt.Dispose();
newEndPt.Dispose();
return(newLine);
}
/// <summary>
/// Compares a single curve to a list of curves to find any curves that have the same normalised vector.
/// </summary>
/// <param name="curve"></param>
/// <param name="curves"></param>
/// <search></search>
public static List <Autodesk.DesignScript.Geometry.Curve> FindMatchingVectorCurves(this Autodesk.DesignScript.Geometry.Curve curve, List <Autodesk.DesignScript.Geometry.Curve> curves)
{
Autodesk.DesignScript.Geometry.Point stPt1 = curve.StartPoint;
Autodesk.DesignScript.Geometry.Point endPt1 = curve.EndPoint;
Autodesk.DesignScript.Geometry.Vector vec1 = Autodesk.DesignScript.Geometry.Vector.ByTwoPoints(stPt1, endPt1).Normalized();
string str1 = vec1.ToString();
List <string> curveList = new List <string>();
foreach (var c in curves)
{
Autodesk.DesignScript.Geometry.Point stPt2 = c.StartPoint;
Autodesk.DesignScript.Geometry.Point endPt2 = c.EndPoint;
Autodesk.DesignScript.Geometry.Vector vec2 = Autodesk.DesignScript.Geometry.Vector.ByTwoPoints(stPt2, endPt2).Normalized();
string str2 = vec2.ToString();
curveList.Add(str2);
//Dispose redundant geometry
stPt2.Dispose();
endPt2.Dispose();
vec2.Dispose();
}
List <Autodesk.DesignScript.Geometry.Curve> matchingCurves = new List <Autodesk.DesignScript.Geometry.Curve>();
for (int i = 0; i < curveList.Count; i++)
{
if (str1 == curveList[i])
{
matchingCurves.Add(curves[i]);
}
}
if (matchingCurves.Count == 0)
{
List <string> revCurveList = new List <string>();
foreach (var c in curves)
{
Autodesk.DesignScript.Geometry.Point stPt2 = c.StartPoint;
Autodesk.DesignScript.Geometry.Point endPt2 = c.EndPoint;
Autodesk.DesignScript.Geometry.Vector vec2 = Autodesk.DesignScript.Geometry.Vector.ByTwoPoints(endPt2, stPt2).Normalized();
string str2 = vec2.ToString();
revCurveList.Add(str2);
//Dispose redundant geometry
stPt2.Dispose();
endPt2.Dispose();
vec2.Dispose();
}
for (int i = 0; i < revCurveList.Count; i++)
{
if (str1 == revCurveList[i])
{
matchingCurves.Add(curves[i]);
}
}
}
//Dispose redundant geometry
stPt1.Dispose();
endPt1.Dispose();
vec1.Dispose();
return(matchingCurves);
}
