【Revit】族及项目下创建拉伸，融合，放样

族：

Ps. 函数里面的ConvertToInternalUnits这个方法，是将毫米单位转成recit内部单位，这个转换可以自行转换，代码这边没有贴出来。

public static Element GetHostInstance(Document doc, CurveArrArray curveArrs, XYZ faceNormal, double start, double end, bool IsSolid = true)
        {
            Element element = null;
#if Revit2018
            element = doc.FamilyCreate.NewExtrusion(IsSolid,
            curveArrs,
            SketchPlane.Create(doc, Plane.CreateByNormalAndOrigin(faceNormal, new XYZ(start * faceNormal.X, start * faceNormal.Y, start * faceNormal.Z).ConvertToInternalUnits())),
            Math.Abs(end - start).ConvertToInternalUnits());
#elif Revit2019
            element = doc.FamilyCreate.NewExtrusion(IsSolid, curveArrs,
                        SketchPlane.Create(doc, Plane.CreateByNormalAndOrigin(faceNormal, new XYZ(start * faceNormal.X, start * faceNormal.Y, start * faceNormal.Z).ConvertToInternalUnits())),
                        Math.Abs(end - start).ConvertToInternalUnits());
#else
            element = doc.FamilyCreate.NewExtrusion(IsSolid, curveArrs,
            SketchPlane.Create(doc, new Plane(faceNormal, new XYZ(start * faceNormal.X, start * faceNormal.Y, start * faceNormal.Z).ConvertToInternalUnits())),
            Math.Abs(end - start).ConvertToInternalUnits());
#endif
            return element;
        }
        //创建拉伸
        public static Extrusion CreateExtrusion(Document doc, CurveArrArray curveArrs, XYZ faceNormal, double start, double end, bool IsSolid = true)
        {
            return GetHostInstance(doc, curveArrs, faceNormal, start, end, IsSolid) as Extrusion;
        }
　　　　　//创建融合
        public static Blend CreateBlend(Document doc, CurveArray topCurves, CurveArray bottomCurves, XYZ faceNormal, double start, bool IsSolid = true)
        {
            var plane = CreateSketchPlane(doc, faceNormal, start);
            var blend = doc.FamilyCreate.NewBlend(IsSolid, topCurves, bottomCurves, plane);
            return blend;
        }
　　　　  //创建放样
        public static Sweep CreateSweep(Document doc, CurveArrArray profileArray, XYZ start, XYZ end, bool IsSolid = true)
        {
            XYZ xvec = new XYZ(end.X - start.X, end.Y - start.Y, 0).Normalize();
            XYZ yvec = XYZ.BasisZ;
            start = start.ConvertToInternalUnits();
            end = end.ConvertToInternalUnits();
            var plane = SketchPlane.Create(doc, CreatePlane(xvec, yvec, start));
            SweepProfile profile = doc.Application.Create.NewCurveLoopsProfile(profileArray);

            Curve curve = Line.CreateBound(start, end);
            CurveArray curves = new CurveArray();
            curves.Append(curve);
            return doc.FamilyCreate.NewSweep(IsSolid, curves, plane, profile, 0, ProfilePlaneLocation.Start);
        }

        public static SketchPlane CreateSketchPlane(Document doc, XYZ faceNormal, XYZ origin)
        {
            SketchPlane element = null;
#if Revit2018
           element = SketchPlane.Create(doc, Plane.CreateByNormalAndOrigin(faceNormal, origin));
#elif Revit2019
            element = SketchPlane.Create(doc, Plane.CreateByNormalAndOrigin(faceNormal, origin));
#else
            element = SketchPlane.Create(doc, new Plane(faceNormal, origin));
#endif
            return element;
        }

        public static SketchPlane CreateSketchPlane(Document doc, XYZ faceNormal, double start)
        {
            SketchPlane element = null;
#if Revit2018
           element = SketchPlane.Create(doc, Plane.CreateByNormalAndOrigin(faceNormal, new XYZ(start * faceNormal.X, start * faceNormal.Y, start * faceNormal.Z).ConvertToInternalUnits()));
#elif Revit2019
            element = SketchPlane.Create(doc, Plane.CreateByNormalAndOrigin(faceNormal, new XYZ(start * faceNormal.X, start * faceNormal.Y, start * faceNormal.Z).ConvertToInternalUnits()));
#else
            element = SketchPlane.Create(doc, new Plane(faceNormal, new XYZ(start * faceNormal.X, start * faceNormal.Y, start * faceNormal.Z).ConvertToInternalUnits()));
#endif
            return element;
        }

项目：

 先来一段项目文档下，拉伸的测试。复制可直接用（需要自己开事务）：

        public static void CreateCubicDirectShape(Autodesk.Revit.UI.UIApplication app)
        {
            List<Curve> profile = new List<Curve>();

            double edgeLength = 2.0;
            XYZ p1 = new XYZ(edgeLength, 0, 0);
            XYZ p2 = new XYZ(edgeLength, edgeLength, 0);
            XYZ p3 = new XYZ(0, edgeLength, 0);
            XYZ p4 = new XYZ(0, 0, 0);

            profile.Add(Line.CreateBound(p1, p2));
            profile.Add(Line.CreateBound(p2, p3));
            profile.Add(Line.CreateBound(p3, p4));
            profile.Add(Line.CreateBound(p4, p1));

            CurveLoop curveLoop = CurveLoop.Create(profile);
            SolidOptions options = new SolidOptions(ElementId.InvalidElementId, ElementId.InvalidElementId);
            Solid cubic = GeometryCreationUtilities.CreateExtrusionGeometry(new CurveLoop[] { curveLoop }, XYZ.BasisZ, 10);
            // create direct shape and assign the sphere shape
            DirectShape ds = DirectShape.CreateElement(app.ActiveUIDocument.Document, new ElementId(BuiltInCategory.OST_Floors), app.ActiveAddInId.GetGUID().ToString(), "");


            ds.AppendShape(new GeometryObject[] { cubic });

            edgeLength = 3.0;
            p1 = new XYZ(edgeLength, 0, 0);
            p2 = new XYZ(edgeLength, edgeLength, 0);
            p3 = new XYZ(0, edgeLength, 0);
            p4 = new XYZ(0, 0, 0);
            profile = new List<Curve>();
            profile.Add(Line.CreateBound(p1, p2));
            profile.Add(Line.CreateBound(p2, p3));
            profile.Add(Line.CreateBound(p3, p4));
            profile.Add(Line.CreateBound(p4, p1));

            var curveLoop2 = CurveLoop.Create(profile);
            var cubic2 = GeometryCreationUtilities.CreateExtrusionGeometry(new CurveLoop[] { curveLoop2 }, -XYZ.BasisZ, 5);
            ds.AppendShape(new GeometryObject[] { cubic2 });
        }

以下是正式代码：

 正式代码没有了。。。因为目前没有找到在项目下空心剪切的实现方法，那就没必要继续研究下去了。。