private static PolySurface GetObjGroupMesh(Group group, LoadResult result)
{
var polygons = new List <Surface>();
var points = new List <Point>();
foreach (var face in group.Faces)
{
for (int i = 0; i < face.Count; i++)
{
var index = face[i].VertexIndex - 1;
points.Add(Point.ByCoordinates(result.Vertices[index].X, result.Vertices[index].Y, result.Vertices[index].Z));
}
}
for (int i = 0; i < points.Count; i += 3)
{
int j = i + 1;
int k = i + 2;
var point1 = points[i];
var point2 = points[j];
var point3 = points[k];
var facePoints = new List <Point>()
{
point1, point2, point3
};
try
{
polygons.Add(Surface.ByPerimeterPoints(facePoints));
point1.Dispose();
point2.Dispose();
point3.Dispose();
}
catch
{
point1.Dispose();
point2.Dispose();
point3.Dispose();
continue;
}
}
return(PolySurface.ByJoinedSurfaces(polygons));
}
public void BySurfNameCategoryMaterial_ValidInput()
{
var cube = Cuboid.ByLengths();
var faces = cube.Faces;
var surfs = faces.Select(x => x.SurfaceGeometry()).ToList();
var surf = PolySurface.ByJoinedSurfaces(surfs);
var mat = DocumentManager.Instance.ElementsOfType <Autodesk.Revit.DB.Material>().First();
var ds = DirectShape.ByGeometry(surf, Category.ByName("OST_GenericModel"), Material.ByName(mat.Name), "a polysurface");
Assert.NotNull(ds);
Assert.AreEqual("a polysurface", ds.Name);
Assert.AreEqual((surf.Tags.LookupTag(ds.InternalElement.Id.ToString()) as DirectShapeState).materialId, mat.Id.IntegerValue);
BoundingBoxCentroid(ds).DistanceTo(Point.Origin()).ShouldBeApproximately(0);
surf.Dispose();
surfs.ForEach(x => x.Dispose());
faces.ForEach(x => x.Dispose());
cube.Dispose();
}
public static List <Autodesk.DesignScript.Geometry.Geometry> DivideSurface(
Surface surface,
List <double> U,
List <double> V)
{
List <IDisposable> disposables = new List <IDisposable>();
List <Autodesk.DesignScript.Geometry.Geometry> dividedSurfaces = new List <Autodesk.DesignScript.Geometry.Geometry>();
List <PolySurface> polySurfaces = new List <PolySurface>();
List <List <double> > UV = new List <List <double> > {
U, V
};
Curve uCurve = Curve.ByIsoCurveOnSurface(surface, 1, 0);
for (int i = 0; i <= 1; i++)
{
List <Surface> crvSurf = new List <Surface>();
foreach (double item in UV[i])
{
Curve crv = Curve.ByIsoCurveOnSurface(surface, i, item);
crvSurf.Add(crv.Extrude(Vector.ByCoordinates(0, 0, 1)));
crv.Dispose();
}
polySurfaces.Add(PolySurface.ByJoinedSurfaces(crvSurf));
disposables.AddRange(crvSurf);
}
List <Autodesk.DesignScript.Geometry.Geometry> splitSurfaces = surface.Split(polySurfaces[1]).ToList();
List <Autodesk.DesignScript.Geometry.Geometry> sortedSurfaces = splitSurfaces.OrderBy(x => uCurve.DistanceTo(x)).ToList();
disposables.AddRange(splitSurfaces);
foreach (var surf in sortedSurfaces)
{
dividedSurfaces.AddRange(surf.Split(polySurfaces[0]));
}
disposables.AddRange(sortedSurfaces);
disposables.AddRange(polySurfaces);
disposables.ForEach(x => x.Dispose());
return(dividedSurfaces);
}
/// <summary>
/// 将Mesh转化为PolySurface
/// </summary>
/// <param name="mesh">网格</param>
/// <returns>转化后的PolySurface</returns>
public static PolySurface ConvertToPolySurface(Mesh mesh)
{
List <Surface> surfaces = new List <Surface>();
Point[] vertexs = mesh.VertexPositions;
IndexGroup[] indexGroup = mesh.FaceIndices;
foreach (var item in indexGroup)
{
if (item.Count == 3)
{
Point pt1 = vertexs[item.A];
Point pt2 = vertexs[item.B];
Point pt3 = vertexs[item.C];
Surface surface = Surface.ByPerimeterPoints(new Point[] { pt1, pt2, pt3 });
surfaces.Add(surface);
pt1.Dispose();
pt2.Dispose();
pt3.Dispose();
surface.Dispose();
}
else
{
Point pt1 = vertexs[item.A];
Point pt2 = vertexs[item.B];
Point pt3 = vertexs[item.C];
Point pt4 = vertexs[item.D];
Surface surface = Surface.ByPerimeterPoints(new Point[] { pt1, pt2, pt3, pt4 });
surfaces.Add(surface);
pt1.Dispose();
pt2.Dispose();
pt3.Dispose();
surface.Dispose();
}
}
return(PolySurface.ByJoinedSurfaces(surfaces));
}