//累加模型面积
private int AddAreaProperty(AreaProperties ap, Entity ent, out bool blockReferenceNotScaled, bool isParentSelected = false, bool all = false)
{
int count = 0;
blockReferenceNotScaled = true;
if (all || ent.Selected || isParentSelected)
{
if (ent is IFace)
{
IFace itfFace = (IFace)ent;
Mesh[] meshes = itfFace.GetPolygonMeshes();
foreach (Mesh mesh in meshes)
{
ap.Add(mesh.Vertices, mesh.Triangles);
}
count++;
}
else if (ent is BlockReference)
{
var br = (BlockReference)ent;
if (br.GetScaleFactorX() != 1 &&
br.GetScaleFactorY() != 1 &&
br.GetScaleFactorZ() != 1)
{
blockReferenceNotScaled = false;
return(count);
}
foreach (var e in br.GetEntities(model.Blocks))
{
count += AddAreaProperty(ap, e, out blockReferenceNotScaled, true);
if (!blockReferenceNotScaled)
{
return(count);
}
}
}
else
{
ICurve itfCurve = (ICurve)ent;
if (itfCurve.IsClosed)
{
ap.Add(ent.Vertices);
}
count++;
}
}
else if (ent is Brep)
{
Brep brep = (Brep)ent;
for (int j = 0; j < brep.Faces.Length; j++)
{
Brep.Face sf = brep.Faces[j];
Mesh[] faceTessellation = sf.Tessellation;
if (brep.GetFaceSelection(j))
{
foreach (Mesh m in faceTessellation)
{
ap.Add(m.Vertices, m.Triangles);
}
count++;
}
}
}
return(count);
}
private void areaButton_OnClick(object sender, RoutedEventArgs e)
{
AreaProperties ap = new AreaProperties();
int count = 0;
for (int i = 0; i < model1.Entities.Count; i++)
{
Entity ent = model1.Entities[i];
if (ent.Selected)
{
ICurve itfCurve = (ICurve)ent;
if (itfCurve.IsClosed)
{
ap.Add(ent.Vertices);
}
count++;
}
}
StringBuilder text = new StringBuilder();
text.AppendLine(count + " entity(ies) selected");
text.AppendLine("---------------------");
if (ap.Centroid != null)
{
double x, y, z;
double xx, yy, zz, xy, zx, yz;
MomentOfInertia world, centroid;
ap.GetResults(ap.Area, ap.Centroid, out x, out y, out z, out xx, out yy, out zz, out xy, out zx, out yz, out world, out centroid);
text.AppendLine("Cumulative area: " + ap.Area + " square " + model1.Units.ToString().ToLower());
text.AppendLine("Cumulative centroid: " + ap.Centroid);
text.AppendLine("Cumulative area moments:");
text.AppendLine(" First moments");
text.AppendLine(" x: " + x.ToString("g6"));
text.AppendLine(" y: " + y.ToString("g6"));
text.AppendLine(" z: " + z.ToString("g6"));
text.AppendLine(" Second moments");
text.AppendLine(" xx: " + xx.ToString("g6"));
text.AppendLine(" yy: " + yy.ToString("g6"));
text.AppendLine(" zz: " + zz.ToString("g6"));
text.AppendLine(" Product moments");
text.AppendLine(" xy: " + xx.ToString("g6"));
text.AppendLine(" yz: " + yy.ToString("g6"));
text.AppendLine(" zx: " + zz.ToString("g6"));
text.AppendLine(" Area Moments of Inertia about World Coordinate Axes");
text.AppendLine(" Ix: " + world.Ix.ToString("g6"));
text.AppendLine(" Iy: " + world.Iy.ToString("g6"));
text.AppendLine(" Iz: " + world.Iz.ToString("g6"));
text.AppendLine(" Area Radii of Gyration about World Coordinate Axes");
text.AppendLine(" Rx: " + world.Rx.ToString("g6"));
text.AppendLine(" Ry: " + world.Ry.ToString("g6"));
text.AppendLine(" Rz: " + world.Rz.ToString("g6"));
text.AppendLine(" Area Moments of Inertia about Centroid Coordinate Axes:");
text.AppendLine(" Ix: " + centroid.Ix.ToString("g6"));
text.AppendLine(" Iy: " + centroid.Iy.ToString("g6"));
text.AppendLine(" Iz: " + centroid.Iz.ToString("g6"));
text.AppendLine(" Area Radii of Gyration about Centroid Coordinate Axes");
text.AppendLine(" Rx: " + centroid.Rx.ToString("g6"));
text.AppendLine(" Ry: " + centroid.Ry.ToString("g6"));
text.AppendLine(" Rz: " + centroid.Rz.ToString("g6"));
}
DetailsWindow rf = new DetailsWindow();
rf.Title = "Area Properties";
rf.contentTextBox.Text = text.ToString();
rf.Show();
}
