protected override void SolveInstance(IGH_DataAccess DA)
{
bool centeredBool = false;
DA.GetData(2, ref centeredBool);
double distance = 0;
DA.GetData(1, ref distance);
Rhino.Geometry.Curve curveToOffset = null;
DA.GetData(0, ref curveToOffset);
Rhino.Geometry.Point3d firstStartPoint = curveToOffset.PointAtStart;
Rhino.Geometry.Point3d firstEndPoint = curveToOffset.PointAtEnd;
Rhino.Geometry.Plane defaultPlane = Plane.WorldXY;
Rhino.Geometry.Curve[] offsetCurves = curveToOffset.Offset(defaultPlane, distance, 0.1, CurveOffsetCornerStyle.Sharp);
Rhino.Geometry.Curve[] mirroredOffsetCurves = curveToOffset.Offset(defaultPlane, distance * -1, 0.1, CurveOffsetCornerStyle.Sharp);
if (offsetCurves.Length > 1)
{
AddRuntimeMessage(GH_RuntimeMessageLevel.Error, "Curve is not clean.");
return;
}
if (centeredBool == true && mirroredOffsetCurves.Length > 1)
{
AddRuntimeMessage(GH_RuntimeMessageLevel.Error, "Curve is not clean.");
return;
}
Rhino.Geometry.Curve offsetCurve = offsetCurves[0];
Rhino.Geometry.Point3d newStartPoint = offsetCurve.PointAtStart;
Rhino.Geometry.Point3d newEndPoint = offsetCurve.PointAtEnd;
Rhino.Geometry.Curve mirroredOffsetCurve = mirroredOffsetCurves[0];
Rhino.Geometry.Point3d mirroredNewStartPoint = mirroredOffsetCurve.PointAtStart;
Rhino.Geometry.Point3d mirroredNewEndPoint = mirroredOffsetCurve.PointAtEnd;
Rhino.Geometry.Curve startCapCurve = null;
Rhino.Geometry.Curve endCapCurve = null;
List <Rhino.Geometry.Curve> regionCurvePieces = new List <Curve>();
if (centeredBool == false)
{
startCapCurve = new Rhino.Geometry.LineCurve(firstStartPoint, newStartPoint) as Rhino.Geometry.Curve;
endCapCurve = new Rhino.Geometry.LineCurve(firstEndPoint, newEndPoint) as Rhino.Geometry.Curve;
regionCurvePieces.Add(curveToOffset);
}
else if (centeredBool == true)
{
startCapCurve = new Rhino.Geometry.LineCurve(mirroredNewStartPoint, newStartPoint) as Rhino.Geometry.Curve;
endCapCurve = new Rhino.Geometry.LineCurve(mirroredNewEndPoint, newEndPoint) as Rhino.Geometry.Curve;
regionCurvePieces.Add(mirroredOffsetCurve);
}
regionCurvePieces.Add(startCapCurve);
regionCurvePieces.Add(offsetCurve);
regionCurvePieces.Add(endCapCurve);
Rhino.Geometry.Curve[] regionOffset = Curve.JoinCurves(regionCurvePieces);
if (regionOffset.Length > 1)
{
AddRuntimeMessage(GH_RuntimeMessageLevel.Error, "Join was unsuccessful.");
return;
}
DA.SetData(0, regionOffset[0]);
}