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();
}
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);
}
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)
{}