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See #2894. Implement SVG mirroring options (typically used for RCPs or useful when converting to other things like DXF).

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This commit is contained in:
Dion Moult
2023-08-11 16:01:01 +10:00
parent eaffd4a2a1
commit 9cb3ce1f9a
2 changed files with 43 additions and 2 deletions
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src/serializers/SvgSerializer.cpp
+23 -2
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@@ -773,7 +773,14 @@ void SvgSerializer::write(const geometry_data& data) {
// SVG has a coordinate system with the origin in the *upper*-left corner
// therefore we mirror the shape along the XZ-plane.
gp_Trsf trsf_mirror;
trsf_mirror.SetMirror(gp_Ax2(gp::Origin(), gp::DY()));
if (!mirror_y_) {
trsf_mirror.SetMirror(gp_Ax2(gp::Origin(), gp::DY()));
}
if (mirror_x_) {
gp_Trsf mirror_x;
mirror_x.SetMirror(gp_Ax2(gp::Origin(), gp::DX()));
trsf_mirror.PreMultiply(mirror_x);
}
BRepBuilderAPI_Transform make_transform_mirror(compound_unmirrored, trsf_mirror, true);
make_transform_mirror.Build();
// (When determinant < 0, copy is implied and the input is not mutated.)
@@ -1679,6 +1686,13 @@ std::array<std::array<double, 3>, 3> SvgSerializer::resize() {
cy = ymin * sc;
}
if (mirror_y_) {
cy = - size_->second - cy;
}
if (mirror_x_) {
cx = - size_->first - cx;
}
m = {{ {{sc,0,-cx}},{{0,sc,-cy}},{{0,0,1}} }};
float_item_list::const_iterator it;
@@ -1716,7 +1730,14 @@ void SvgSerializer::draw_hlr(const gp_Pln& pln, const drawing_key& drawing_name)
TopoDS_Shape hlr_compound;
if (drawing_name.first == nullptr) {
gp_Trsf trsf_mirror;
trsf_mirror.SetMirror(gp_Ax2(gp::Origin(), gp::DY()));
if (!mirror_y_) {
trsf_mirror.SetMirror(gp_Ax2(gp::Origin(), gp::DY()));
}
if (mirror_x_) {
gp_Trsf mirror_x;
mirror_x.SetMirror(gp_Ax2(gp::Origin(), gp::DX()));
trsf_mirror.PreMultiply(mirror_x);
}
BRepBuilderAPI_Transform make_transform_mirror(hlr_compound_unmirrored, trsf_mirror, true);
make_transform_mirror.Build();
hlr_compound = make_transform_mirror.Shape();