public override IPnt GetPointAt(double fraction, bool as3D)
{
const bool asRatio = true;
InnerSegment.QueryPoint(esriSegmentExtension.esriNoExtension,
fraction, asRatio, QPoint);
return(CreatePoint(QPoint, as3D));
}
public override void QueryOffset(Pnt point, out double offset, out double along)
{
along = 0;
offset = 0;
bool rightSide = false;
QPoint.PutCoords(point.X, point.Y);
InnerSegment.QueryPointAndDistance(esriSegmentExtension.esriExtendTangents, QPoint,
true, QPoint, ref along, ref offset, ref rightSide);
}
public override SegmentProxy GetSubCurve(double fromRatio, double toRatio)
{
ICurve subCurve;
const bool asRatio = true;
InnerSegment.GetSubcurve(fromRatio, toRatio, asRatio, out subCurve);
var segment = subCurve as ISegment;
Assert.NotNull(segment, "segment expected from GetSubCurve() on segment");
// TODO revise returning the same SegmentIndex. Correct?
// maybe return something more narrow than SegmentProxy? Just what the caller needs?
return(new AoSegmentProxy(segment, PartIndex, SegmentIndex));
}
public override double GetDirectionAt(double fraction)
{
InnerSegment.QueryTangent(esriSegmentExtension.esriExtendTangents, fraction, true, 1,
QTangent);
QTangent.QueryFromPoint(QPoint);
double x0, y0;
QPoint.QueryCoords(out x0, out y0);
QTangent.QueryToPoint(QPoint);
double x1, y1;
QPoint.QueryCoords(out x1, out y1);
double dir = Math.Atan2(y1 - y0, x1 - x0);
return(dir);
}
public override WKSEnvelope GetSubCurveBox(double fromRatio, double toRatio)
{
WKSEnvelope box = new WKSEnvelope();
if (fromRatio > 0 || toRatio < 1)
{
ICurve subCurve;
const bool asRatio = true;
InnerSegment.GetSubcurve(fromRatio, toRatio, asRatio, out subCurve);
var segment = subCurve as ISegment;
Assert.NotNull(segment, "segment expected from GetSubCurve() on segment");
segment.QueryWKSEnvelope(ref box);
}
else
{
InnerSegment.QueryWKSEnvelope(ref box);
}
return(box);
}
public override Pnt GetEnd(bool as3D)
{
InnerSegment.QueryToPoint(QPoint);
return(CreatePoint(QPoint, as3D));
}
public override Pnt GetStart(bool as3D)
{
InnerSegment.QueryFromPoint(QPoint);
return(CreatePoint(QPoint, as3D));
}