private bool IsHole(IFace2 face)
{
ISurface surf = face.IGetSurface();
if (surf.IsCylinder())
{
double[] uvBounds = face.GetUVBounds() as double[];
double[] evalData = surf.Evaluate((uvBounds[1] - uvBounds[0]) / 2, (uvBounds[3] - uvBounds[2]) / 2, 1, 1) as double[];
double[] pt = new double[] { evalData[0], evalData[1], evalData[2] };
int sense = face.FaceInSurfaceSense() ? 1 : -1;
double[] norm = new double[] { evalData[evalData.Length - 3] * sense, evalData[evalData.Length - 2] * sense, evalData[evalData.Length - 1] * sense };
double[] cylParams = surf.CylinderParams as double[];
double[] orig = new double[] { cylParams[0], cylParams[1], cylParams[2] };
double[] dir = new double[] { pt[0] - orig[0], pt[1] - orig[1], pt[2] - orig[2] };
IMathUtility mathUtils = swApp.IGetMathUtility();
IMathVector dirVec = mathUtils.CreateVector(dir) as IMathVector;
IMathVector normVec = mathUtils.CreateVector(norm) as IMathVector;
return(GetAngle(dirVec, normVec) < Math.PI / 2);
}
else
{
throw new NotSupportedException("Only cylindrical face is supported");
}
}
public static bool GetDistance(this IFace2 entity0, IFace2 entity1, out double[] posacast, out double[] posbcast)
{
var bounds = entity1.GetUVBounds().CastArray<double>();
var param = new[] {bounds[0], bounds[2], bounds[1], bounds[3]};
object posa, posb;
double distance;
var result = ((IEntity) entity0).GetDistance(entity1, true, param, out posa, out posb, out distance);
posacast = posa.CastArray<double>();
posbcast = posb.CastArray<double>();
return result == 0;
}
public static bool GetDistance(this IFace2 entity0, IFace2 entity1, out double[] posacast, out double[] posbcast)
{
var bounds = entity1.GetUVBounds().CastArray <double>();
var param = new[] { bounds[0], bounds[2], bounds[1], bounds[3] };
object posa, posb;
double distance;
var result = ((IEntity)entity0).GetDistance(entity1, true, param, out posa, out posb, out distance);
posacast = posa.CastArray <double>();
posbcast = posb.CastArray <double>();
return(result == 0);
}
private static ICurve[] SplitFaceOnIsoCurves(IFace2 face, int curvesCount, bool vOrU)
{
var curves = new List <ICurve>();
var surf = face.IGetSurface();
var uvBounds = face.GetUVBounds() as double[];
var minU = uvBounds[0];
var maxU = uvBounds[1];
var minV = uvBounds[2];
var maxV = uvBounds[3];
double thisMin;
double thisMax;
double otherMin;
double otherMax;
if (vOrU) //if v param
{
thisMin = minV;
thisMax = maxV;
otherMin = minU;
otherMax = maxU;
}
else //if u param
{
thisMin = minU;
thisMax = maxU;
otherMin = minV;
otherMax = maxV;
}
var step = (thisMax - thisMin) / (curvesCount - 1);
for (int i = 1; i < curvesCount - 1; i++)
{
var par = thisMin + i * step;
var curve = surf.MakeIsoCurve2(vOrU, ref par);
double u;
double v;
if (vOrU)
{
u = otherMin;
v = par;
}
else
{
u = par;
v = otherMin;
}
var pt = surf.Evaluate(u, v, 0, 0) as double[];
var startPt = new double[] { pt[0], pt[1], pt[2] };
if (vOrU)
{
u = otherMax;
v = par;
}
else
{
u = par;
v = otherMax;
}
pt = surf.Evaluate(u, v, 0, 0) as double[];
var endPt = new double[] { pt[0], pt[1], pt[2] };
curve = curve.CreateTrimmedCurve2(startPt[0], startPt[1], startPt[2], endPt[0], endPt[1], endPt[2]);
curves.Add(curve);
}
return(curves.ToArray());
}
