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SvgSerializer: Fix bounding box for arc segments

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Not necessarily minimal, but better to be conservative w.r.t. getting
all geometry inside bounds.
This commit is contained in:
Anders Granskogen Bjørnstad
2017-11-23 11:50:55 +01:00
committed by Thomas Krijnen
parent d53d4a96c9
commit 376c2de85c
1 changed files with 8 additions and 1 deletions
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src/ifcconvert/SvgSerializer.cpp
+8 -1
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@@ -118,15 +118,22 @@ void SvgSerializer::write(path_object& p, const TopoDS_Wire& wire) {
// the direction is reversed. // the direction is reversed.
positive_direction = !positive_direction; positive_direction = !positive_direction;
} }
gp_Pnt center;
if (ty == STANDARD_TYPE(Geom_Circle)) { if (ty == STANDARD_TYPE(Geom_Circle)) {
Handle(Geom_Circle) circle = Handle(Geom_Circle)::DownCast(curve); Handle(Geom_Circle) circle = Handle(Geom_Circle)::DownCast(curve);
r1 = r2 = circle->Radius(); r1 = r2 = circle->Radius();
center = circle->Location();
} else { } else {
Handle(Geom_Ellipse) ellipse = Handle(Geom_Ellipse)::DownCast(curve); Handle(Geom_Ellipse) ellipse = Handle(Geom_Ellipse)::DownCast(curve);
r1 = ellipse->MajorRadius(); r1 = ellipse->MajorRadius();
r2 = ellipse->MinorRadius(); r2 = ellipse->MinorRadius();
center = ellipse->Location();
} }
// Make sure the arc segment is entirely inside bounding box:
growBoundingBox(center.X() - r1, center.Y() - r1);
growBoundingBox(center.X() + r1, center.Y() + r1);
// Calculate the angle between 2d vecs to have signed result // Calculate the angle between 2d vecs to have signed result
const gp_Dir& d = conic->Position().XDirection(); const gp_Dir& d = conic->Position().XDirection();