public BSplineFace(BSplineSurface surface, IReadOnlyList <IReadOnlyList <BSpline2D> > trimLoops)
{
Surface = surface;
TrimLoops = trimLoops;
}
/// <summary>
/// Create a BSplineFace from the TrimCurve data.
/// http://help.solidworks.com/2015/English/api/sldworksapi/SOLIDWORKS.Interop.sldworks~SOLIDWORKS.Interop.sldworks.IFace2~GetTrimCurves2.html
/// </summary>
/// <param name="swFace"></param>
/// <returns></returns>
public static BSplineFace Create(IFace2 swFace)
{
var start = 0;
var packedData = swFace.GetTrimCurves2(WantCubic: true, WantNRational: false).CastArray <double>();
var reader = new GetTrimCurves2DataReader(packedData);
// Packed Double 1
// An integer pair containing number of loops and total number of SP curves (trim curves).
// The length of any edge list generated immediately after a call to IFace2::GetTrimCurves2
// will be equal to the number of SP curves
var packedDouble1 = reader.ReadDouble().DoubleToInteger();
int numLoops = packedDouble1.Item1;
int numSPCurves = packedDouble1.Item2;
// PackeDouble 2
// Series of integer pairs containing the number of SP curves in each loop.
// The first integer in each pair represents the number of curves in the odd loops;
// the second represents the even. The total number of integer pairs is half the
// number of loops, rounded up
var curvesPerLoopLookup = reader.ReadIntegers(numLoops).ToList();
var i = 0;
// PackedDouble 3[] ( Array of doubles )
// For each SP curve, a set of two integer pairs.
// The first contains the order of the curve and
// a Boolean indicating if it is periodic.If the curve is periodic,
// it is clamped (that is, knots of multiplicity = order exists at each end of the curve).
// The second contains the dimension of the curve and the number of control points in it.
// If the dimension is 2, then the curve is non - rational; if the dimension is 3,
// then the curve is rational.
var spCurveInfos = reader
.ReadBufferedIntegers(bufferSize: 4, numberOfBuffers: numSPCurves)
.Do(b =>
{
LogViewer.Log($"Get TrimCurves2 'PackedDouble 3' buffer {i++}");
LogViewer.Log(string.Join(" ", b));
})
.Select(b => new { order = b[0], isPeriodic = b[1] == 1, dimension = b[2], isRational = b[2] == 3, numCtrlPoints = b[3] })
.ToList();
var spCurveInfos2 = spCurveInfos
.Select
(info =>
{
var knots = reader.Read(info.order + info.numCtrlPoints).ToList();
return(new { info.order, info.isPeriodic, info.dimension, info.isRational, info.numCtrlPoints, knots });
})
.ToList();
var trimCurves = spCurveInfos2
.Select
(info =>
{
var ctrlPoints = reader
.Read(info.numCtrlPoints * info.dimension)
.Buffer(info.dimension, info.dimension)
.Select(ToRationalVector3)
.ToList();
return(new BSpline2D
(controlPoints: ctrlPoints.ToArray()
, knotVectorU: info.knots.ToArray()
, order: info.order
, isClosed: info.isPeriodic
, isRational: info.dimension == 3));
})
.ToArray();
var bLoops = curvesPerLoopLookup
.Scan(new { start = 0, step = 0 }, (acc, count) => new { start = acc.start + acc.step, step = count })
.Skip(1)
.Select(o => trimCurves.ToArraySegment(o.start, o.step).ToArray())
.ToArray();
fixLoops(bLoops);
// packed double 4
var surfaceDimension = reader.ReadDouble().DoubleToInteger().Item1;
// packed double 5
var uvOrder = reader.ReadDouble().DoubleToInteger().Map((u, v) => new { u, v });
// packed double 6
var uvNumCtrlPoints = reader.ReadDouble().DoubleToInteger().Map((u, v) => new { u, v });
// packed double 7
var uvIsPeriodic = reader.ReadDouble().DoubleToInteger().Map((u, v) => new { u, v });
// surfaceKnotValuesU
var uKnots = reader.Read(uvOrder.u + uvNumCtrlPoints.u).ToArray();
// surfaceKnotValuesV
var vKnots = reader.Read(uvOrder.v + uvNumCtrlPoints.v).ToArray();
// surfaceCtrlPoinCoords
var surfaceCtrlPoints = reader.Read(surfaceDimension * uvNumCtrlPoints.u * uvNumCtrlPoints.v)
.Buffer(surfaceDimension, surfaceDimension)
.Select(ToRationalVector4WithWeighRescaling)
.ToList();
// packed doubles 8
// TODO handle the case for multiple surfaces
var indexFlags = reader.ReadDouble().DoubleToInteger().Map((nSurface, index) => new { nSurface, index });
var ctrlPointsArray = surfaceCtrlPoints.Reshape(uvNumCtrlPoints.u, uvNumCtrlPoints.v);
var bSurface = new BSplineSurface(ctrlPointsArray, uvOrder.u, uvOrder.v, uKnots, vKnots, surfaceDimension, uvIsPeriodic.u == 1, uvIsPeriodic.v == 1);
return(new BSplineFace(bSurface, bLoops));
}
/// <summary>
/// Create a BSplineFace from the TrimCurve data.
/// http://help.solidworks.com/2015/English/api/sldworksapi/SOLIDWORKS.Interop.sldworks~SOLIDWORKS.Interop.sldworks.IFace2~GetTrimCurves2.html
/// </summary>
/// <param name="swFace"></param>
/// <returns></returns>
public static BSplineFace Create(IFace2 swFace)
{
var start = 0;
var packedData = swFace.GetTrimCurves2(true, false).CastArray <double>();
var reader = new GetTrimCurves2DataReader(packedData);
// Packed Double 1
var packedDouble1 = reader.ReadDouble().DoubleToInteger();
int numLoops = packedDouble1.Item1;
int numSPCurves = packedDouble1.Item2;
// PackeDouble 2
var curvesPerLoopLookup = reader.ReadIntegers(numLoops).ToList();
// PackedDouble 3
var spCurveInfos = reader
.ReadBufferedIntegers(4, numSPCurves)
.Select(b => new { order = b[0], isPeriodic = b[1] == 1, dimension = b[2], isRational = b[2] == 3, numCtrlPoints = b[3] })
.ToList();
var spCurveInfos2 = spCurveInfos
.Select
(info =>
{
var knots = reader.Read(info.order + info.numCtrlPoints).ToList();
return(new { info, knots });
})
.ToList();
var trimCurves = spCurveInfos2
.Select
(info =>
{
var ctrlPoints = reader
.Read(info.info.numCtrlPoints * info.info.dimension)
.Buffer(info.info.dimension, info.info.dimension)
.Select(ToRationalVector3)
.ToList();
return(new BSpline2D(ctrlPoints.ToArray(), info.knots.ToArray(), info.info.order, info.info.isPeriodic));
})
.ToArray();
var bLoops = curvesPerLoopLookup
.Scan(new { start = 0, step = 0 }, (acc, count) => new { start = acc.start + acc.step, step = count })
.Skip(1)
.Select(o => trimCurves.ToArraySegment(o.start, o.step).ToArray())
.ToArray();
// packed double 4
var surfaceDimension = reader.ReadDouble().DoubleToInteger().Item1;
// packed double 5
var uvOrder = reader.ReadDouble().DoubleToInteger().Map((u, v) => new { u, v });
// packed double 6
var uvNumCtrlPoints = reader.ReadDouble().DoubleToInteger().Map((u, v) => new { u, v });
// packed double 7
var uvIsPeriodic = reader.ReadDouble().DoubleToInteger().Map((u, v) => new { u, v });
// surfaceKnotValuesU
var uKnots = reader.Read(uvOrder.u + uvNumCtrlPoints.u).ToArray();
// surfaceKnotValuesV
var vKnots = reader.Read(uvOrder.v + uvNumCtrlPoints.v).ToArray();
// surfaceCtrlPoinCoords
var surfaceCtrlPoints = reader.Read(surfaceDimension * uvNumCtrlPoints.u * uvNumCtrlPoints.v)
.Buffer(surfaceDimension, surfaceDimension)
.Select(ToRationalVector4)
.ToList();
// packed doubles 8
// TODO handle the case for multiple surfaces
var indexFlags = reader.ReadDouble().DoubleToInteger().Map((nSurface, index) => new { nSurface, index });
var ctrlPointsArray = surfaceCtrlPoints.Reshape(uvNumCtrlPoints.u, uvNumCtrlPoints.v);
var bSurface = new BSplineSurface(ctrlPointsArray, uvOrder.u, uvOrder.v, uKnots, vKnots);
return(new BSplineFace(bSurface, bLoops));
}