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left hand helix

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This commit is contained in:
wmayer
2012-05-01 13:17:10 +02:00
parent ac3bfe8ac4
commit 2a16c7bd49
6 changed files with 74 additions and 33 deletions
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65
src/Mod/Part/App/TopoShape.cpp
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@@ -1493,42 +1493,49 @@ TopoDS_Shape TopoShape::makeSweep(const TopoDS_Shape& profile, double tol, int f
}
TopoDS_Shape TopoShape::makeHelix(Standard_Real pitch, Standard_Real height,
Standard_Real radius, Standard_Real angle) const
Standard_Real radius, Standard_Real angle,
Standard_Boolean leftHanded) const
{
if (pitch < Precision::Confusion())
Standard_Failure::Raise("Pitch of helix too small");
if (pitch < Precision::Confusion())
Standard_Failure::Raise("Pitch of helix too small");
if (height < Precision::Confusion())
Standard_Failure::Raise("Height of helix too small");
if (height < Precision::Confusion())
Standard_Failure::Raise("Height of helix too small");
if (radius < Precision::Confusion())
Standard_Failure::Raise("Radius of helix too small");
if (radius < Precision::Confusion())
Standard_Failure::Raise("Radius of helix too small");
gp_Ax2 cylAx2(gp_Pnt(0.0,0.0,0.0) , gp::DZ());
Handle_Geom_Surface surf;
if (angle < Precision::Confusion()) {
surf = new Geom_CylindricalSurface(cylAx2, radius);
}
else {
angle = Base::toRadians(angle);
if (angle < Precision::Confusion())
Standard_Failure::Raise("Angle of helix too small");
surf = new Geom_ConicalSurface(gp_Ax3(cylAx2), angle, radius);
}
gp_Ax2 cylAx2(gp_Pnt(0.0,0.0,0.0) , gp::DZ());
Handle_Geom_Surface surf;
if (angle < Precision::Confusion()) {
surf = new Geom_CylindricalSurface(cylAx2, radius);
}
else {
angle = Base::toRadians(angle);
if (angle < Precision::Confusion())
Standard_Failure::Raise("Angle of helix too small");
surf = new Geom_ConicalSurface(gp_Ax3(cylAx2), angle, radius);
}
gp_Pnt2d aPnt(0, 0);
gp_Dir2d aDir(2. * PI, pitch);
gp_Ax2d aAx2d(aPnt, aDir);
gp_Pnt2d aPnt(0, 0);
gp_Dir2d aDir(2. * PI, pitch);
if (leftHanded) {
//aPnt.SetCoord(0.0, height);
//aDir.SetCoord(2.0 * PI, -pitch);
aPnt.SetCoord(2. * PI, 0.0);
aDir.SetCoord(-2. * PI, pitch);
}
gp_Ax2d aAx2d(aPnt, aDir);
Handle(Geom2d_Line) line = new Geom2d_Line(aAx2d);
gp_Pnt2d beg = line->Value(0);
gp_Pnt2d end = line->Value(sqrt(4.0*PI*PI+pitch*pitch)*(height/pitch));
Handle(Geom2d_TrimmedCurve) segm = GCE2d_MakeSegment(beg , end);
Handle(Geom2d_Line) line = new Geom2d_Line(aAx2d);
gp_Pnt2d beg = line->Value(0);
gp_Pnt2d end = line->Value(sqrt(4.0*PI*PI+pitch*pitch)*(height/pitch));
Handle(Geom2d_TrimmedCurve) segm = GCE2d_MakeSegment(beg , end);
TopoDS_Edge edgeOnSurf = BRepBuilderAPI_MakeEdge(segm , surf);
TopoDS_Wire wire = BRepBuilderAPI_MakeWire(edgeOnSurf);
BRepLib::BuildCurves3d(wire);
return wire;
TopoDS_Edge edgeOnSurf = BRepBuilderAPI_MakeEdge(segm , surf);
TopoDS_Wire wire = BRepBuilderAPI_MakeWire(edgeOnSurf);
BRepLib::BuildCurves3d(wire);
return wire;
}
TopoDS_Shape TopoShape::makeLoft(const TopTools_ListOfShape& profiles,