public void AddSeam(Surface srf, Color color = default(Color))
{
if (!IS_ENABLED)
{
return;
}
if (color == default(Color))
{
color = Color.Crimson;
}
var ss = new SurfaceSeams(srf);
if (ss.HasSeams)
{
var uT0 = ss.U.Domain.T0;
var uT1 = ss.U.Domain.T1;
var vT0 = ss.V.Domain.T0;
var vT1 = ss.V.Domain.T1;
if (ss.U.IsAtT0 && ss.U.IsAtT1)
{
AddCurve(srf._GetVCurve(ss.U.T0), "Seam on U at {0:0.00} & {1:0.00}"._Format(uT0, uT1), color);
}
if (ss.V.IsAtT0 && ss.V.IsAtT1)
{
AddCurve(srf._GetUCurve(ss.V.T0), "Seam on V at {0:0.00} & {1:0.00}"._Format(vT0, vT1), color);
}
}
}
public static NurbsCurve _Convert3dCurveTo2d(this Surface srf, NurbsCurve crv3d
, SurfaceSingulars ssingulars = null, Curve trim = null, Curve edge = null, double pullback_tol = 0.001)
{
var seam = new SurfaceSeams(srf);
if (seam.HasSeams)
{
log.wrong("Dangerous convertion of 3d curve to 2d in method _Curve._Convert3dCurveTo2d(). Remove seam before use such convertions.");
}
// Try internal method first - it is faster, but may be incorrect
var newCrv2d = srf.Pullback(crv3d, pullback_tol);
Point3d[] point3d;
if (newCrv2d != null && newCrv2d._TryDivideByCount(5, out point3d))
{
//var sps = newCrv2d.Points._SurfacePoints();
var sps = point3d.Select(o => new SurfacePoint(o)).ToList();
var isSPSFixed = srf._FixSurfacePoints(ref sps, false, null, null, crv3d);
if (!isSPSFixed) // if there is no need in fixing points - we have good 2d curve - lets return result
{
return(newCrv2d._ToNurbsCurve());
}
}
// Lets use our method - slow but very precise
// Rebuild 3d curve for better precision pulling to 2d surface.
var divby = crv3d._GetDivBy(null, 0.01, 100);
NurbsCurve Crv3dRebuilded = crv3d.Rebuild(divby, 3, false) ?? crv3d;
Crv3dRebuilded = Crv3dRebuilded._SetDimension(3);
newCrv2d = srf._Convert3dCurveTo2d_WithoutRebuildAndSimplify(Crv3dRebuilded, ssingulars, trim, edge);
var res = newCrv2d._Simplify(srf);
return(res);
}
public static List <SurfaceKinkData> _Kinks_Find(this Surface srf)
{
if (srf.IsClosed(0) || srf.IsClosed(1))
{
return(null);
}
if (srf.IsPeriodic(0) || srf.IsPeriodic(1))
{
return(null);
}
if (srf.IsCone())
{
return(null);
}
if (srf.IsCylinder())
{
return(null);
}
if (srf.IsSphere())
{
return(null);
}
if (srf.IsTorus())
{
return(null);
}
var ss = new SurfaceSeams(srf);
if (ss.HasSeams)
{
return(null);
}
var sss = new SurfaceSingulars(srf);
if (sss.HasSingulars)
{
return(null);
}
var srfNurb = srf._IncreaseSurfaceDensity().ToNurbsSurface();
if (srfNurb.Points.CountU < MIN_CONTORL_POINTS_COUNT &&
srfNurb.Points.CountV < MIN_CONTORL_POINTS_COUNT)
{
return(null);
}
//var srfBound = srf._GetMinMaxUV();
//var faceBound = face._GetMinMaxUV();
var uv0 = 0;
var uv1 = 1;
if (srfNurb.Points.CountU < MIN_CONTORL_POINTS_COUNT)
{
uv0 = 1; // exclude checking on u if not enought control points
}
if (srfNurb.Points.CountV < MIN_CONTORL_POINTS_COUNT)
{
uv1 = 0; // exclude checking on v if not enought control points
}
string failReason = "";
double deviation = 0;
List <SurfaceKinkData> res = null;
for (int uv = uv0; uv <= uv1; uv++)
{
var crv = srf._TryGetIsoCurve_Mid(uv, true, out failReason, out deviation);
if (crv == null)
{
log.wrong("srf._TryGetIsoCurve_Mid failed: " + failReason);
continue;
}
if (DEBUG)
{
Layers.Debug.AddTangent(crv, "" + uv, Color.Red);
RhinoDoc.ActiveDoc.Objects.AddCurve(crv);
}
var crvEnds = new[] { CurveEnd.Start, CurveEnd.End };
var srfEnds = (uv == 0)
? new[] { IsoStatus.West, IsoStatus.East }
: new[] { IsoStatus.South, IsoStatus.North };
for (int istartend = 0; istartend <= 1; istartend++)
{
//
// Angle
//
var angle = GetAngle(srf, crv, uv, istartend);
if (Math.Abs(90 - angle) > 3)
{
log.wrong("_SurfaceKinks._Kinks_Find: Math.Abs(90 - angle) > 10");
continue;
}
//
// Angle Extended
//
var crvEnd = crvEnds[istartend];
var srfEnd = srfEnds[istartend];
var srfExtended = srf._ExtendSurfaceByPercent(srfEnd, 100 * EXTEND_BY_PERCENT);
var crvExtended = srfExtended._TryGetIsoCurve_Mid(uv, true, out failReason, out deviation);
if (crvExtended == null)
{
log.wrong("srfExtended._TryGetIsoCurve_Mid failed: " + failReason);
continue;
}
var angleExtended = GetAngle(srfExtended, crvExtended, uv, istartend);
if (Math.Abs(90 - angleExtended) > 3)
{
log.wrong("_SurfaceKinks._Kinks_Find: Math.Abs(90 - angleExtended) > 10");
continue;
}
//
// Angle between 'extended IsoCurve1' to 'IsoCurve2'
//
var crvIso1Extended = crv.Extend(crvEnd, crv._GetLength_ThreadSafe() * EXTEND_BY_PERCENT, CurveExtensionStyle.Arc);
if (crvIso1Extended == null)
{
log.wrong("crv.Extend failed");
continue;
}
var angleCrvs = Vector3d.VectorAngle(crvExtended._Tangent(crvEnd), crvIso1Extended._Tangent(crvEnd))._RadianToDegree();
if (angleCrvs > 10)
{
var kink = new SurfaceKinkData
{
AngleDeviation = angleCrvs,
SrfEnd = srfEnd,
};
if (res == null)
{
res = new List <SurfaceKinkData>(2);
}
res.Add(kink);
}
//if (DEBUG)
//{
// //RhinoDoc.ActiveDoc.Objects.AddSurface(srfExtended);
// RhinoDoc.ActiveDoc.Objects.AddCurve(crvExtended);
//}
}
}
return(res);
}
