public void SameBeginning()
{
var body1 = TestData.GetBodyFromBRep(Path.Combine(_BasePath, "Source1.brep"));
var body2 = TestData.GetBodyFromBRep(Path.Combine(_BasePath, "Source2.brep"));
var(first, second) = BoxJoint.Create(body1, body2);
first.ReverseOrder = false;
first.BoxCount = 4; // Only visible if boxcount is even
first.RemoveExcess = true;
second.RemoveExcess = true;
Assert.IsTrue(first.Make(Shape.MakeFlags.None));
Assert.IsTrue(second.Make(Shape.MakeFlags.None));
var compound = new TopoDS_Compound();
var builder = new BRep_Builder();
builder.MakeCompound(compound);
builder.Add(compound, body1.GetTransformedBRep());
builder.Add(compound, body2.GetTransformedBRep());
AssertHelper.IsSameModel(compound, Path.Combine(_BasePath, "SameBeginning"));
first.ReverseOrder = true;
Assert.IsTrue(first.Make(Shape.MakeFlags.None));
Assert.IsTrue(second.Make(Shape.MakeFlags.None));
compound = new TopoDS_Compound();
builder.MakeCompound(compound);
builder.Add(compound, body1.GetTransformedBRep());
builder.Add(compound, body2.GetTransformedBRep());
AssertHelper.IsSameModel(compound, Path.Combine(_BasePath, "SameBeginning2"));
}
//--------------------------------------------------------------------------------------------------
public TopoDS_Compound Reconstruct()
{
var compound = new TopoDS_Compound();
var builder = new BRep_Builder();
builder.MakeCompound(compound);
var thicknessVector = SliceDirection.ToVec().Multiplied(SliceThickness / Slices.Length);
if (thicknessVector.SquareMagnitude() == 0)
{
Messages.Error("Sliced shape has no thickness.");
return(compound);
}
for (int index = 0; index < Slices.Length; index++)
{
var basePlane = Slices[index].CutPlane.Translated(thicknessVector.Multiplied(0.5).ToPnt(), Pnt.Origin);
var location = new TopLoc_Location(new Trsf(basePlane.Position, Ax3.XOY));
var relocatedShape = Slices[index].BRep.Located(location);
var thickener = new BRepPrimAPI_MakePrism(relocatedShape, thicknessVector, true);
builder.Add(compound, thickener.Shape());
}
return(compound);
}
//--------------------------------------------------------------------------------------------------
public static TopoDS_Shape TransformSketchShape(TopoDS_Shape original, IEnumerable <Trsf2d> transforms, bool includeOriginal)
{
// Make copies
var builder = new BRep_Builder();
var shapeBuildEdge = new ShapeBuild_Edge();
var newShape = new TopoDS_Compound();
builder.MakeCompound(newShape);
foreach (var transform in transforms)
{
foreach (var wire in original.Wires())
{
foreach (var edge in wire.Edges())
{
if (includeOriginal)
{
builder.Add(newShape, edge);
}
var tedge = edge.TShape() as BRep_TEdge;
var curves = tedge.CurvesList();
foreach (BRep_CurveOnSurface curveRep in curves.OfType <BRep_CurveOnSurface>())
{
// Transform PCurve
var curve = curveRep.PCurve();
double first = curve.FirstParameter();
double last = curve.LastParameter();
var newCurve = shapeBuildEdge.TransformPCurve(curve, transform, 1.0, ref first, ref last);
// Transform UVs
Pnt2d uv0 = new Pnt2d();
Pnt2d uv1 = new Pnt2d();
curveRep.UVPoints(ref uv0, ref uv1);
uv0.Transform(transform);
uv1.Transform(transform);
var makeEdge = new BRepBuilderAPI_MakeEdge2d(newCurve, uv0, uv1);
builder.Add(newShape, makeEdge.Edge());
}
}
}
}
return(BuildWiresFromEdges(newShape));
}
//--------------------------------------------------------------------------------------------------
public static TopoDS_Solid MakeSolid(TopoDS_Shell shell, bool correctOrientation)
{
var builder = new BRep_Builder();
var solid = new TopoDS_Solid();
builder.MakeSolid(solid);
builder.Add(solid, shell);
if (correctOrientation)
{
var classifier = new BRepClass3d_SolidClassifier(solid);
classifier.PerformInfinitePoint(Precision.Confusion());
if (classifier.State() == TopAbs_State.TopAbs_IN)
{
solid = new TopoDS_Solid();
builder.MakeSolid(solid);
builder.Add(solid, shell.Reversed());
}
}
return(solid);
}
//--------------------------------------------------------------------------------------------------
void _UpdateReconstructed()
{
// Update reconstructed
var visObject = WorkspaceController.VisualObjects.Get(_Body, true) as VisualShape;
if (visObject == null)
{
return;
}
visObject.OverrideBrep = _Component.ReconstructedBRep?.Located(new TopLoc_Location(_Body.GetTransformation()));;
_IsReconstructedActive = true;
// Update preview
var builder = new BRep_Builder();
var compound = new TopoDS_Compound();
builder.MakeCompound(compound);
if (_Component.Layers != null)
{
foreach (var layer in _Component.Layers)
{
var location = new TopLoc_Location(new Trsf(layer.CutPlane.Position, Ax3.XOY));
builder.Add(compound, layer.BRep.Located(location));
}
}
compound.Location(new TopLoc_Location(_Body.GetTransformation()));
if (_AisPreviewShape == null)
{
_AisPreviewShape = new AIS_Shape(compound);
_AisPreviewShape.SetColor(Colors.FilteredSubshapesHot);
_AisPreviewShape.SetWidth(2.0);
_AisPreviewShape.SetZLayer(-2); // Top
WorkspaceController.Workspace.AisContext.Display(_AisPreviewShape, 0, -1, false, false);
}
else
{
_AisPreviewShape.SetShape(compound);
WorkspaceController.Workspace.AisContext.RecomputePrsOnly(_AisPreviewShape, false);
}
// Finalize
_IsReconstructeUpdating = false;
WorkspaceController.Invalidate();
}
//--------------------------------------------------------------------------------------------------
void _CreateLayer(List <VectorExportLayer> layers, VectorExportLayerType layerTypeType, HlrEdgeType edgeType1, HlrEdgeType edgeType2, HlrBRepAlgoBase hlrAlgo)
{
var shape1 = _IncludeEdgeTypes.Contains(edgeType1) ? hlrAlgo.GetResult(edgeType1) : null;
var shape2 = _IncludeEdgeTypes.Contains(edgeType2) ? hlrAlgo.GetResult(edgeType2) : null;
if (shape1 != null && shape2 != null)
{
var builder = new BRep_Builder();
var compound = new TopoDS_Compound();
builder.MakeCompound(compound);
builder.Add(compound, hlrAlgo.GetResult(edgeType1));
builder.Add(compound, hlrAlgo.GetResult(edgeType2));
layers.Add(new VectorExportLayer(layerTypeType, compound));
}
else if (shape1 != null)
{
layers.Add(new VectorExportLayer(layerTypeType, shape1));
}
else if (shape2 != null)
{
layers.Add(new VectorExportLayer(layerTypeType, shape2));
}
}
public void ComplexMeshRead()
{
var exchanger = new ObjExchanger();
var path = Path.Combine(TestData.TestDataDirectory, Path.Combine(_BasePath, "ComplexMeshRead_Source.obj"));
Assert.IsTrue((exchanger as IBodyImporter).DoImport(path, out var bodies));
Assert.IsNotNull(bodies);
var compound = new TopoDS_Compound();
var builder = new BRep_Builder();
builder.MakeCompound(compound);
foreach (var body in bodies)
{
builder.Add(compound, body.Shape.GetTransformedBRep());
}
AssertHelper.IsSameModel(compound, Path.Combine(_BasePath, "ComplexMeshRead"),
ModelCompare.CompareFlags.SaveTriangulation | ModelCompare.CompareFlags.CompareBytes);
}
public void ReadMultipleSolids()
{
var exchanger = new StepExchanger();
var path = Path.Combine(TestData.TestDataDirectory, Path.Combine(_BasePath, "ReadSolid_Source.stp"));
Assert.IsTrue((exchanger as IBodyImporter).DoImport(path, out var bodies));
Assert.IsNotNull(bodies);
Assert.AreEqual(47, bodies.Count());
var compound = new TopoDS_Compound();
var builder = new BRep_Builder();
builder.MakeCompound(compound);
foreach (var body in bodies)
{
builder.Add(compound, body.Shape.GetTransformedBRep());
}
AssertHelper.IsSameModel(compound, Path.Combine(_BasePath, "ReadMultipleSolids"));
}
//--------------------------------------------------------------------------------------------------
static List <Body> _CreateBodies(List <ObjectDescription> objectDescList, string bodyName, bool singleBody)
{
// Create bodies
var bodyList = new List <Body>();
if (singleBody)
{
var compound = new TopoDS_Compound();
var builder = new BRep_Builder();
builder.MakeCompound(compound);
foreach (var objectDesc in objectDescList)
{
builder.Add(compound, objectDesc.Face);
}
var body = Body.Create(Mesh.Create(compound));
body.Name = bodyName;
bodyList.Add(body);
}
else
{
int index = 1;
foreach (var objectDesc in objectDescList)
{
var body = Body.Create(Mesh.Create(objectDesc.Face));
if (!objectDesc.Name.IsNullOrWhiteSpace())
{
body.Name = objectDesc.Name;
}
else
{
body.Name = $"{bodyName}_{index++}";
}
bodyList.Add(body);
}
}
return(bodyList);
}
//--------------------------------------------------------------------------------------------------
#endregion
#region IBrepExporter
bool IBodyExporter.DoExport(string fileName, IEnumerable <Body> bodies)
{
try
{
var builder = new BRep_Builder();
var compound = new TopoDS_Compound();
builder.MakeCompound(compound);
foreach (var body in bodies)
{
var bodyShape = body.Shape?.GetTransformedBRep();
if (bodyShape == null)
{
Messages.Warning($"BRep Exporter: The body {body.Name} has no valid shape, thus it will not be included in the export.");
continue;
}
builder.Add(compound, bodyShape);
}
var bytes = Settings.ExportBinaryFormat ? BRepExchange.WriteBinary(compound, true) : BRepExchange.WriteASCII(compound, true);
if (bytes == null || bytes.Length == 0)
{
Messages.Error("BRep Exporter: Error generating BRep from body shapes.");
return(false);
}
File.WriteAllBytes(fileName, bytes);
return(true);
}
catch (Exception e)
{
Console.WriteLine(e);
Messages.Exception("Error exporting file " + fileName + ".", e);
}
return(false);
}
//--------------------------------------------------------------------------------------------------
public static TopoDS_Shape BuildWiresFromEdges(TopoDS_Shape shape)
{
var edges = new TopTools_HSequenceOfShape();
foreach (var edge in shape.Edges())
{
edges.Append(edge);
}
var wires = new TopTools_HSequenceOfShape();
ShapeAnalysis_FreeBounds.ConnectEdgesToWires(edges, 1e-8, false, wires);
var builder = new BRep_Builder();
var newShape = new TopoDS_Compound();
builder.MakeCompound(newShape);
for (int i = wires.Lower(); i <= wires.Upper(); i++)
{
builder.Add(newShape, wires.Value(i));
}
return(newShape);
}
//--------------------------------------------------------------------------------------------------
public bool DoImport(string fileName, out IEnumerable <Body> bodies)
{
bodies = null;
try
{
var reader = new Occt.Helper.IgesReader();
if (!reader.ReadFromFile(fileName))
{
Messages.Error("IGES Importer: Error importing file " + fileName + ".");
return(false);
}
var rootShape = reader.GetRootShape();
if (rootShape == null)
{
Messages.Error("IGES Importer: No shapes found to import from file " + fileName + ".");
return(false);
}
var shapes = new List <TopoDS_Shape>();
var solids = rootShape.Solids();
if (solids.Count == 0)
{
shapes.Add(rootShape);
}
else
{
if (Settings.ImportSingleBody)
{
var compound = new TopoDS_Compound();
var builder = new BRep_Builder();
builder.MakeCompound(compound);
foreach (var solid in solids)
{
builder.Add(compound, solid);
}
shapes.Add(compound);
}
else
{
shapes.AddRange(solids);
}
}
var bodyList = new List <Body>();
int index = 1;
string bodyName = Path.GetFileNameWithoutExtension(fileName);
foreach (var shape in shapes)
{
// Get top level transformation for body
var trsf = shape.Location().Transformation();
var position = trsf.TranslationPart().ToPnt();
var rotation = trsf.GetRotation();
// eliminate top level transformation
shape.Location(new TopLoc_Location());
var body = Body.Create(Solid.Create(shape));
body.Position = position;
body.Rotation = rotation;
body.Name = $"{bodyName}_{index++}";
bodyList.Add(body);
}
bodies = bodyList;
return(true);
}
catch (Exception e)
{
Console.WriteLine(e);
Messages.Exception("Error importing file " + fileName + ".", e);
}
return(false);
}
//--------------------------------------------------------------------------------------------------
bool IBodyImporter.DoImport(string fileName, out IEnumerable <Body> bodies)
{
bodies = null;
try
{
using (var fs = new FileStream(fileName, FileMode.Open, FileAccess.Read))
{
var vertices = new List <Pnt>();
var currentObject = ObjectDescription.Create();
var objectDescList = new List <ObjectDescription>();
var reader = new ObjAsciiReader(fs);
// Read
string cmd;
while (reader.MoveNext(out cmd))
{
switch (cmd)
{
case "o":
case "g":
if (currentObject.Indices.Count != 0)
{
objectDescList.Add(currentObject);
}
currentObject = ObjectDescription.Create();
reader.GetObjectOrGroup(out currentObject.Name);
break;
case "v":
if (!reader.GetVertex(out var vertex))
{
return(false);
}
vertices.Add(vertex);
break;
case "f":
case "fo":
if (!reader.GetFace(out var indices))
{
continue;
}
// Negative indices must be correctly re-assigned
// -1 => vertices.Count
// -2 => vertices.Count-1
for (int i = 0; i < indices.Length; i++)
{
if (indices[i] < 0)
{
indices[i] = vertices.Count + (indices[i] + 1);
}
}
if (indices.Length == 3)
{
currentObject.Indices.AddRange(indices.Take(3).Select(index => index - 1)); // Correct lower bound (from 1 to 0)
}
else
{
var triangulator = new EarClippingTriangulator();
var result = triangulator.DoTriangulation(vertices, indices.Select(index => index - 1)); // Correct lower bound (from 1 to 0)
if (result != null)
{
currentObject.Indices.AddRange(result);
}
}
break;
}
}
if (currentObject.Indices.Count != 0)
{
objectDescList.Add(currentObject);
}
// Create Faces
foreach (var objectDesc in objectDescList)
{
// Extract used vertices
var usedVertices = new List <Pnt>();
var indexMap = new Dictionary <int, int>();
for (int index = 0; index < objectDesc.Indices.Count; index++)
{
int newIndex;
int oldIndex = objectDesc.Indices[index];
if (!indexMap.TryGetValue(oldIndex, out newIndex))
{
newIndex = usedVertices.Count;
usedVertices.Add(vertices[oldIndex]);
indexMap.Add(oldIndex, newIndex);
}
objectDesc.Indices[index] = newIndex;
}
// Create shape
objectDesc.Face = TriangulationHelper.CreateFaceFromTriangulation(new TriangulationData(objectDesc.Indices.ToArray(), usedVertices.ToArray()));
}
// Create bodies
var bodyList = new List <Body>();
string bodyName = Path.GetFileNameWithoutExtension(fileName);
if (Settings.ImportSingleBody)
{
var compound = new TopoDS_Compound();
var builder = new BRep_Builder();
builder.MakeCompound(compound);
foreach (var objectDesc in objectDescList)
{
builder.Add(compound, objectDesc.Face);
}
var body = Body.Create(Mesh.Create(compound));
body.Name = bodyName;
bodyList.Add(body);
}
else
{
int index = 1;
foreach (var objectDesc in objectDescList)
{
var body = Body.Create(Mesh.Create(objectDesc.Face));
if (!objectDesc.Name.IsNullOrWhiteSpace())
{
body.Name = objectDesc.Name;
}
else
{
body.Name = $"{bodyName}_{index++}";
}
bodyList.Add(body);
}
}
bodies = bodyList;
// Cleanup
fs.Close();
}
return(true);
}
catch (Exception e)
{
Messages.Exception($"Exception occured while importing {fileName}.", e);
return(false);
}
}
