ISession_Direction::ISession_Direction (const gp_Pnt2d& aPnt2d,
                                        const gp_Dir2d& aDir2d,
                                        Standard_Real aLength)
: myPnt (gp_Pnt(aPnt2d.X(),aPnt2d.Y(),0.0)),
  myDir (gp_Dir(aDir2d.X(),aDir2d.Y(),0.0)),
  myLength (aLength)
{
  myArrowLength = myDrawer->ArrowAspect()->Length();
}
Esempio n. 2
0
void SvgSerializer::write(path_object& p, const TopoDS_Wire& wire) {
	/* ShapeFix_Wire fix;
	Handle(ShapeExtend_WireData) data = new ShapeExtend_WireData;
	for (TopExp_Explorer edges(result, TopAbs_EDGE); edges.More(); edges.Next()) {
		data->Add(edges.Current());
	}
	fix.Load(data);
	fix.FixReorder();
	fix.FixConnected();
	const TopoDS_Wire fixed_wire = fix.Wire(); */

	bool first = true;
	util::string_buffer path;
	path.add("            <path style=\"stroke:black; fill:none;\" d=\"");
	for (TopExp_Explorer edges(wire, TopAbs_EDGE); edges.More(); edges.Next()) {
		const TopoDS_Edge& edge = TopoDS::Edge(edges.Current());

		double u1, u2;
		Handle(Geom_Curve) curve = BRep_Tool::Curve(edge, u1, u2);

		const bool reversed = edge.Orientation() == TopAbs_REVERSED;

		gp_Pnt p1, p2;
		curve->D0(u1, p1);
		curve->D0(u2, p2);

		if (reversed) {
			std::swap(p1, p2);
		}
				
		if (first) {
			path.add("M");
			addXCoordinate(path.add(p1.X()));
			path.add(",");
			addYCoordinate(path.add(p1.Y()));

			growBoundingBox(p1.X(), p1.Y());
		}

		growBoundingBox(p2.X(), p2.Y());

		Handle(Standard_Type) ty = curve->DynamicType();

		if (ty == STANDARD_TYPE(Geom_Circle) || ty == STANDARD_TYPE(Geom_Ellipse)) {
			Handle(Geom_Conic) conic = Handle(Geom_Conic)::DownCast(curve);
			const bool mirrored = conic->Position().Axis().Direction().Z() < 0;
					
			double r1, r2;
			bool larger_arc_segment = (fmod(u2 - u1 + PI2, PI2) > M_PI);
			bool positive_direction = (u2 > u1);

			if (mirrored != reversed) {
				// In case the local coordinate system is mirrored
				// the direction is reversed.
				positive_direction = !positive_direction;
			}
					
			if (ty == STANDARD_TYPE(Geom_Circle)) {
				Handle(Geom_Circle) circle = Handle(Geom_Circle)::DownCast(curve);
				r1 = r2 = circle->Radius();
			} else {
				Handle(Geom_Ellipse) ellipse = Handle(Geom_Ellipse)::DownCast(curve);
				r1 = ellipse->MajorRadius();
				r2 = ellipse->MinorRadius();
			}
					
			// Calculate the angle between 2d vecs to have signed result
			const gp_Dir& d = conic->Position().XDirection();
			const gp_Dir2d d2(d.X(), d.Y());
			const double ang = d2.Angle(gp::DX2d());

			// Write radii
			path.add(" A");
			addSizeComponent(path.add(r1));
			path.add(",");
			addSizeComponent(path.add(r2));
					
			// Write X-axis rotation
			{ std::stringstream ss; ss << " " << ang << " ";
			path.add(ss.str()); }
					
			// Write large-arc-flag and sweep-flag
			path.add(std::string(1, '0'+static_cast<int>(larger_arc_segment)));
			path.add(",");
			path.add(std::string(1, '0'+static_cast<int>(positive_direction)));
					
			path.add(" ");

			// Write arc end point
			xcoords.push_back(path.add(p2.X()));
			path.add(",");
			ycoords.push_back(path.add(p2.Y()));
		} else {
			// Either a Geom_Line or something unimplemented,
			// drawn as a straight line segment.
			path.add(" L");
			xcoords.push_back(path.add(p2.X()));
			path.add(",");
			ycoords.push_back(path.add(p2.Y()));
		}

		first = false;
	}

	path.add("\"/>\n");
	p.second.push_back(path);
}
Esempio n. 3
0
ISession_Direction::ISession_Direction(gp_Pnt2d& aPnt2d,
                                       gp_Dir2d& aDir2d,
                                       Standard_Real aLength)
:myPnt(gp_Pnt(aPnt2d.X(),aPnt2d.Y(),0)),myDir(gp_Dir(aDir2d.X(),aDir2d.Y(),0)),myLength(aLength)
{}