//--------------------------------------------------------------------------------------------------
bool _DoThruSections(MakeContext context)
{
var maker = new BRepOffsetAPI_ThruSections(context.AllWiresClosed);
maker.CheckCompatibility(true);
foreach (var wireInfo in context.Wires)
{
maker.AddWire(wireInfo.Wire);
}
maker.Build();
if (!maker.IsDone())
{
Messages.Error("Make thru sections failed.");
return(false);
}
context.Result = maker.Shape();
context.StartFace = maker.FirstShape().ToFace();
context.EndFace = maker.LastShape().ToFace();
return(true);
}
/// <summary>
/// create a screw
/// </summary>
/// <param name="widthBase">length of the base</param>
/// <param name="diameter">diameter of the screwed part</param>
/// <param name="lengthVis">length of the screwed part</param>
/// <param name="pas">distance travelled by the helicoidal part after 2*pi</param>
/// <param name="heightBase">height of the base</param>
/// <param name="profondeurSillon">depth of the screw</param>
/// <param name="longueurSillon">length of the helicoidal part</param>
public Vis(double widthBase, double diameter, double lengthVis, double pas, double heightBase, double profondeurSillon, double longueurSillon)
{ // it was hard to parameterize it "correctly", consider taking a screenshot before having fun in modifying it
double param6 = 2; // pas / (2 * Math.PI); // pas trop grand please
double param10 = pas / (Math.PI / 3); // c'est pour definir le pas
double param9 = 0; // -param10/2; // position de la vis ?
double param1 = lengthVis - longueurSillon / 2; // position du centre de la partie helicoidale par rapport au bout pointu de la vis
double aMinor = 0.05; // epaisseur de la rainure
double aMajor = (longueurSillon / pas) * Math.PI; // un pi par tour donc 2*pi = 2 tours
// Base
/*Cylinder myBase = new Cylinder(widthBase / 2, heightBase);
* myBase.Translate(new Pnt(0, 0, -heightBase));//*/
BRepPrimAPI_MakeCylinder aMakeCylinder = new BRepPrimAPI_MakeCylinder(new gp_Ax2(new gp_Pnt(0, 0, -heightBase), new gp_Dir(0, 0, 1)), widthBase / 2, heightBase);
TopoDS_Shape myBase = aMakeCylinder.Shape();
// helicoidal part
//Cylinder neck = new Cylinder(diameter / 2, lengthVis);
BRepPrimAPI_MakeCylinder aMakeCylinder2 = new BRepPrimAPI_MakeCylinder(new gp_Ax2(new gp_Pnt(0, 0, 0), new gp_Dir(0, 0, 1)), diameter / 2, lengthVis);
TopoDS_Shape neck = aMakeCylinder2.Shape();
//threading: define 2d curves
double depart = param1;
gp_Pnt2d aPnt = new gp_Pnt2d(2 * Math.PI, param9);
gp_Dir2d aDir = new gp_Dir2d(2 * Math.PI, param10);
gp_Ax2d anAx2d = new gp_Ax2d(aPnt, aDir);
//double aMinor = longueurSillon/5; // epaisseur de la rainure
Geom2d.Geom2d_Ellipse anEllipse1 = new Geom2d.Geom2d_Ellipse(anAx2d, aMajor, aMinor);
Geom2d.Geom2d_Ellipse anEllipse2 = new Geom2d.Geom2d_Ellipse(anAx2d, aMajor, aMinor / param6);
Geom2d.Geom2d_TrimmedCurve anArc1 = new Geom2d.Geom2d_TrimmedCurve(anEllipse1, 0, Math.PI);
Geom2d.Geom2d_TrimmedCurve anArc2 = new Geom2d.Geom2d_TrimmedCurve(anEllipse2, 0, Math.PI);
gp_Pnt2d anEllipsePnt1 = anEllipse1.Value(0);
gp_Pnt2d anEllipsePnt2 = anEllipse1.Value(Math.PI);
GCE2d_MakeSegment aMakeSegment = new GCE2d_MakeSegment(anEllipsePnt1, anEllipsePnt2);
Geom2d.Geom2d_TrimmedCurve aSegment = aMakeSegment.Value();
//threading: build edges and wires
Geom_CylindricalSurface aCyl1 = new Geom_CylindricalSurface(new gp_Ax3(new gp_Ax2(new gp_Pnt(0, 0, depart), new gp_Dir(0, 0, 1))), (diameter / 2) * 0.99);
Geom_CylindricalSurface aCyl2 = new Geom_CylindricalSurface(new gp_Ax3(new gp_Ax2(new gp_Pnt(0, 0, depart), new gp_Dir(0, 0, 1))), (diameter / 2) * (0.99 + profondeurSillon));
//
BRepBuilderAPI_MakeEdge aMakeEdge = new BRepBuilderAPI_MakeEdge(anArc1, aCyl1);
aMakeEdge.Build();
TopoDS_Edge anEdge1OnSurf1 = aMakeEdge.Edge();
//
aMakeEdge = new BRepBuilderAPI_MakeEdge(aSegment, aCyl1);
aMakeEdge.Build();
TopoDS_Edge anEdge2OnSurf1 = aMakeEdge.Edge();
//
aMakeEdge = new BRepBuilderAPI_MakeEdge(anArc2, aCyl2);
aMakeEdge.Build();
TopoDS_Edge anEdge1OnSurf2 = aMakeEdge.Edge();
//
aMakeEdge = new BRepBuilderAPI_MakeEdge(aSegment, aCyl2);
aMakeEdge.Build();
TopoDS_Edge anEdge2OnSurf2 = aMakeEdge.Edge();
//
BRepBuilderAPI_MakeWire aMakeWire = new BRepBuilderAPI_MakeWire(anEdge1OnSurf1, anEdge2OnSurf1);
aMakeWire.Build();
TopoDS_Wire threadingWire1 = aMakeWire.Wire();
aMakeWire = new BRepBuilderAPI_MakeWire(anEdge1OnSurf2, anEdge2OnSurf2);
aMakeWire.Build();
TopoDS_Wire threadingWire2 = aMakeWire.Wire();
BRepLib.BRepLib.BuildCurves3d(threadingWire1);
BRepLib.BRepLib.BuildCurves3d(threadingWire2);
//create threading
BRepOffsetAPI_ThruSections aTool = new BRepOffsetAPI_ThruSections(true);
aTool.AddWire(threadingWire1);
aTool.AddWire(threadingWire2);
aTool.CheckCompatibility(false);
TopoDS_Shape myThreading = aTool.Shape();
// _______fuse_______
BOPAlgo_BOP adder = new BOPAlgo_BOP();
adder.AddArgument(myBase);
TopTools_ListOfShape LSA = new TopTools_ListOfShape();
LSA.Append(neck);
adder.SetTools(LSA);
adder.SetRunParallel(true);
adder.SetOperation(BOPAlgo_Operation.BOPAlgo_FUSE);
adder.Perform();
TopoDS_Shape myBody = adder.Shape();
// _______fuse_______
BOPAlgo_BOP adder2 = new BOPAlgo_BOP();
adder2.AddArgument(myBody);
TopTools_ListOfShape LSA2 = new TopTools_ListOfShape();
LSA2.Append(myThreading);
adder2.SetTools(LSA2);
adder2.SetRunParallel(true);
adder2.SetOperation(BOPAlgo_Operation.BOPAlgo_FUSE);
adder2.Perform();
myBody = adder2.Shape();
// _______triangulation_______
myFaces = Triangulation(myBody, 0.007f);
}