Coordinate[] GetTessellatedCurveCoordinates(CircularArc3d curve)
{
var coordinateList = new CoordinateList();
if (curve.StartPoint != curve.EndPoint)
{
switch (this.CurveTessellationMethod)
{
case CurveTessellation.None:
coordinateList.Add(this.ReadCoordinate(curve.StartPoint));
coordinateList.Add(this.ReadCoordinate(curve.EndPoint));
break;
case CurveTessellation.Linear:
{
var samplePoints = curve.GetSamplePoints((int)Math.Round(this.CurveTessellationValue));
for (int i = 0; i < samplePoints.Length; i++)
{
Point3d point3D = samplePoints[i].Point;
coordinateList.Add(this.ReadCoordinate(point3D));
}
break;
}
case CurveTessellation.Scaled:
{
double num = curve.GetArea(curve.GetParameterOf(curve.StartPoint), curve.GetParameterOf(curve.EndPoint)) * this.CurveTessellationValue;
double num2 = Math.Acos((curve.Radius - 1.0 / (num / 2.0)) / curve.Radius);
int num3 = (int)Math.Round(6.2831853071795862 / num2);
if (num3 < 8)
{
num3 = 8;
}
if (num3 > 128)
{
num3 = 128;
}
var samplePoints2 = curve.GetSamplePoints(num3);
for (int j = 0; j < samplePoints2.Length; j++)
{
var point3d2 = samplePoints2[j].Point;
coordinateList.Add(this.ReadCoordinate(point3d2));
}
break;
}
}
}
return(coordinateList.ToCoordinateArray());
}
//This function gets the 5 points on the passed arc and adds those points
//to passed point array (pointList)
static public void BreakArc(ref Arc arc, ref Point3dCollection pointList)
{
CircularArc3d arcseg = new CircularArc3d(arc.Center, arc.Normal, arc.Normal.GetPerpendicularVector(),
arc.Radius, arc.StartAngle, arc.EndAngle);
var pointArray = arcseg.GetSamplePoints(5);
bool bReverse = false;
//Whether to bReverse the reading of points from line, this case is valid
//only if this function is called for line segment of polyline.
if (pointList.Count > 0)
{
Point3d currentPoint = pointList[pointList.Count - 1];
if (currentPoint != pointArray[0].Point)
{
bReverse = true;
}
}
int nLength = pointArray.Length;
int nIndex = 0;
if (bReverse == false)
{
while (nIndex < nLength)
{
if (pointList.Contains(pointArray[nIndex].Point) == false)
{
pointList.Add(pointArray[nIndex].Point);
DBPoint point = new DBPoint(pointArray[nIndex].Point);
point.ColorIndex = 1;
point.SetDatabaseDefaults();
TGpoints.Add(point);
}
nIndex++;
}
}
else
{
nIndex = nLength;
while (nIndex > 0)
{
nIndex = nIndex - 1;
if (pointList.Contains(pointArray[nIndex].Point) == false)
{
pointList.Add(pointArray[nIndex].Point);
DBPoint point = new DBPoint(pointArray[nIndex].Point);
point.ColorIndex = 1;
point.SetDatabaseDefaults();
TGpoints.Add(point);
}
}
}
}
