public List <AcadDB.Region> GetRegions() { List <AcadDB.Region> regions = new List <AcadDB.Region>(); AcadGeo.Vector3d tmp_vec = up_vector.CrossProduct(normal_vector); AcadDB.DBObjectCollection objs = new AcadDB.DBObjectCollection(); AcadGeo.Vector3d hf = up_vector * height * 0.5; AcadGeo.Vector3d wf = tmp_vec * width * 0.5; objs.Add(new AcadDB.Line(base_point + hf + wf, base_point + hf - wf)); objs.Add(new AcadDB.Line(base_point + hf - wf, base_point - hf - wf)); objs.Add(new AcadDB.Line(base_point - hf - wf, base_point - hf + wf)); objs.Add(new AcadDB.Line(base_point - hf + wf, base_point + hf + wf)); AcadDB.DBObjectCollection regs = AcadDB.Region.CreateFromCurves(objs); foreach (var reg in regs) { if (reg is AcadDB.Region) { regions.Add(reg as AcadDB.Region); } } return(regions); }
public void Rotate(AcadGeo.Vector3d vec) { AcadGeo.Vector3d axe = vec.CrossProduct(normal_vector); axe = axe.GetNormal(); if (axe.IsEqualTo(new AcadGeo.Vector3d(0.0, 0.0, 0.0))) { return; } double angle = normal_vector.GetAngleTo(vec, axe); if (angle > AcadFuncs.kPI) { angle -= AcadFuncs.kPI; } if (angle > AcadFuncs.kPI * 0.5) { angle -= AcadFuncs.kPI; } AcadGeo.Tolerance tol = new AcadGeo.Tolerance(0.01, 0.01); if (!up_vector.IsParallelTo(axe, tol)) { up_vector = up_vector.RotateBy(angle, axe); } if (!normal_vector.IsParallelTo(axe, tol)) { normal_vector = normal_vector.RotateBy(angle, axe); } }
internal static Movement4 getMoveVector(Triangle tri, Triangle adjacentTri, Edge commonEdge) { Movement4 r = new Movement4(); Point center = tri.Center; Edge e = center.PerpendicularOn(commonEdge.ToLine()); if (adjacentTri == null) { return(r); } Edge e2 = adjacentTri.Center.PerpendicularOn(commonEdge.ToLine()); Autodesk.AutoCAD.Geometry.Vector3d v = MyConvert.toVector(e); Autodesk.AutoCAD.Geometry.Vector3d v2 = MyConvert.toVector(e2); Autodesk.AutoCAD.Geometry.Vector3d crossv = v.CrossProduct(v2); Autodesk.AutoCAD.Geometry.Vector3d movev = crossv.CrossProduct(v); double angle = v.GetAngleTo(v2); if (angle < 0) { throw new System.Exception("angle<0"); } if (angle > Math.PI) { angle = Math.PI * 2 - angle; } double length = e.Length; Autodesk.AutoCAD.Geometry.Vector3d unitV = movev.GetNormal(); r.move = -unitV * (Math.PI - angle) * 1 / 16; r.dis = length; return(r); }
private AcadGeo.Vector3d NormalVec() { AcadGeo.Vector3d v1 = AcadFuncs.GetVec(position, main_branch_position); AcadGeo.Vector3d v2 = AcadFuncs.GetVec(branch_position, position); return(v1.CrossProduct(v2).GetNormal()); }