public bool Extend(CurveEnd end, double length, CurveExtensionStyle style = CurveExtensionStyle.Smooth)
{
Curve c = Centreline.Extend(end, length, style);
if (c == null)
{
return(false);
}
Centreline = c;
return(true);
}
/// <summary>
/// Extends a curve to a point.
/// </summary>
/// <param name="side">The end of the curve to extend.</param>
/// <param name="style">The style or type of extension to use.</param>
/// <param name="endPoint">A new end point.</param>
/// <returns>New extended curve result on success, null on failure.</returns>
public Curve Extend(CurveEnd side, CurveExtensionStyle style, Point3d endPoint)
{
if (CurveEnd.None == side)
return null;
int _side = 0;
if (CurveEnd.End == side)
_side = 1;
else if (CurveEnd.Both == side)
_side = 2;
IntPtr pConstPtr = ConstPointer();
int extendStyle = idxExtendTypeLine;
if (style == CurveExtensionStyle.Arc)
extendStyle = idxExtendTypeArc;
else if (style == CurveExtensionStyle.Smooth)
extendStyle = idxExtendTypeSmooth;
IntPtr rc = UnsafeNativeMethods.RHC_RhinoExtendCurve2(pConstPtr, extendStyle, _side, endPoint);
return GeometryBase.CreateGeometryHelper(rc, null) as Curve;
}
/// <summary>
/// Extends a curve until it intersects a collection of objects.
/// </summary>
/// <param name="side">The end of the curve to extend.</param>
/// <param name="style">The style or type of extension to use.</param>
/// <param name="geometry">A collection of objects. Allowable object types are Curve, Surface, Brep.</param>
/// <returns>New extended curve result on success, null on failure.</returns>
public Curve Extend(CurveEnd side, CurveExtensionStyle style, System.Collections.Generic.IEnumerable<GeometryBase> geometry)
{
if (CurveEnd.None == side)
return null;
int _side = 0;
if (CurveEnd.End == side)
_side = 1;
else if (CurveEnd.Both == side)
_side = 2;
IntPtr pConstPtr = ConstPointer();
using (SimpleArrayGeometryPointer geometryArray = new SimpleArrayGeometryPointer(geometry))
{
IntPtr geometryArrayPtr = geometryArray.ConstPointer();
int extendStyle = idxExtendTypeLine;
if (style == CurveExtensionStyle.Arc)
extendStyle = idxExtendTypeArc;
else if (style == CurveExtensionStyle.Smooth)
extendStyle = idxExtendTypeSmooth;
IntPtr rc = UnsafeNativeMethods.RHC_RhinoExtendCurve1(pConstPtr, extendStyle, _side, geometryArrayPtr);
return GeometryBase.CreateGeometryHelper(rc, null) as Curve;
}
}
/// <summary>
/// Extends a curve by a specific length.
/// </summary>
/// <param name="side">Curve end to extend.</param>
/// <param name="length">Length to add to the curve end.</param>
/// <param name="style">Extension style.</param>
/// <returns>A curve with extended ends or null on failure.</returns>
public Curve Extend(CurveEnd side, double length, CurveExtensionStyle style)
{
if (side == CurveEnd.None)
return DuplicateCurve();
length = Math.Max(length, 0.0);
double l0 = length;
double l1 = length;
if (side == CurveEnd.End)
l0 = 0.0;
if (side == CurveEnd.Start)
l1 = 0.0;
IntPtr ptr = ConstPointer();
IntPtr rc = UnsafeNativeMethods.RHC_RhinoExtendCurve(ptr, l0, l1, (int)style);
return GeometryBase.CreateGeometryHelper(rc, null) as Curve;
}
/// <summary>
/// Extends a curve to a point.
/// </summary>
/// <param name="side">The end of the curve to extend.</param>
/// <param name="style">The style or type of extension to use.</param>
/// <param name="endPoint">A new end point.</param>
/// <returns>New extended curve result on success, null on failure.</returns>
public Curve Extend(CurveEnd side, CurveExtensionStyle style, Point3d endPoint)
{
if (CurveEnd.None == side)
return null;
int _side = 0;
if (CurveEnd.End == side)
_side = 1;
else if (CurveEnd.Both == side)
_side = 2;
IntPtr pConstPtr = ConstPointer();
IntPtr rc = UnsafeNativeMethods.RHC_RhinoExtendCurve2(pConstPtr, ConvertExtensionStyle(style), _side, endPoint);
return GeometryBase.CreateGeometryHelper(rc, null) as Curve;
}
static UnsafeNativeMethods.ExtendCurveConsts ConvertExtensionStyle(CurveExtensionStyle style)
{
if (style == CurveExtensionStyle.Arc)
return UnsafeNativeMethods.ExtendCurveConsts.ExtendTypeArc;
if (style == CurveExtensionStyle.Line)
return UnsafeNativeMethods.ExtendCurveConsts.ExtendTypeLine;
return UnsafeNativeMethods.ExtendCurveConsts.ExtendTypeSmooth;
}