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Fixed incorrect hole normal transformation when the object is anisotropically scaled

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This commit is contained in:
Lukas Matena 2020-01-23 12:14:43 +01:00
parent 022cc0871a
commit d58ee47e4d
1 changed files with 8 additions and 1 deletions
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9
src/libslic3r/SLAPrint.cpp
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@ -1182,11 +1182,18 @@ sla::DrainHoles SLAPrintObject::transformed_drainhole_points() const
assert(m_model_object != nullptr); assert(m_model_object != nullptr);
auto pts = m_model_object->sla_drain_holes; auto pts = m_model_object->sla_drain_holes;
auto tr = trafo().cast<float>(); auto tr = trafo().cast<float>();
auto sc = m_model_object->instances.front()->get_scaling_factor().cast<float>();
for (sla::DrainHole &hl : pts) { for (sla::DrainHole &hl : pts) {
hl.pos = tr * hl.pos; hl.pos = tr * hl.pos;
hl.normal = tr * hl.normal - tr.translation(); hl.normal = tr * hl.normal - tr.translation();
// The normal scales as a covector (and we must also
// undo the damage already done).
hl.normal = Vec3f(hl.normal(0)/(sc(0)*sc(0)),
hl.normal(1)/(sc(1)*sc(1)),
hl.normal(2)/(sc(2)*sc(2)));
} }
return pts; return pts;
} }