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FIX: rendering issue of mirrored model 

jira: STUDIO-10869

Change-Id: I985ae6fd0df917fbd4bd537220048b59df902c9a
This commit is contained in:
jun.zhang 2025-03-17 14:35:00 +08:00 committed by lane.wei
parent c690ba82b1
commit 576d59f6c8
1 changed files with 9 additions and 3 deletions
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12
src/slic3r/GUI/3DScene.cpp
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@ -747,9 +747,15 @@ Transform3d GLVolume::world_matrix() const
bool GLVolume::is_left_handed() const
{
const Vec3d &m1 = m_instance_transformation.get_mirror();
const Vec3d &m2 = m_volume_transformation.get_mirror();
return m1.x() * m1.y() * m1.z() * m2.x() * m2.y() * m2.z() < 0.;
// reference <Real-Time Rendering Fourth Edition> page 84
// link: https://www.realtimerendering.com/
const auto model_matrix = world_matrix().matrix();
Eigen::Matrix3d subMatrix = model_matrix.block<3, 3>(0, 0);
const auto det = subMatrix.determinant();
if (det < 1e-6f) {
return true;
}
return false;
}
const BoundingBoxf3& GLVolume::transformed_bounding_box() const