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Added extended functionality to Geometry::Transformation class

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This commit is contained in:
Enrico Turri 2018-11-01 13:42:07 +01:00
parent 42d3db9ab1
commit 26d373a2e2
4 changed files with 67 additions and 5 deletions
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48
src/libslic3r/Geometry.cpp
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@ -1245,6 +1245,11 @@ Transformation::Transformation()
{
}
Transformation::Transformation(const Transform3d& transform)
{
set_from_transform(transform);
}
void Transformation::set_offset(const Vec3d& offset)
{
set_offset(X, offset(0));
@ -1317,6 +1322,45 @@ void Transformation::set_mirror(Axis axis, double mirror)
}
}
void Transformation::set_from_transform(const Transform3d& transform)
{
// offset
set_offset(transform.matrix().block(0, 3, 3, 1));
Eigen::Matrix<double, 3, 3, Eigen::DontAlign> m3x3 = transform.matrix().block(0, 0, 3, 3);
// mirror
// it is impossible to reconstruct the original mirroring factors from a matrix,
// we can only detect if the matrix contains a left handed reference system
// in which case we reorient it back to right handed by mirroring the x axis
Vec3d mirror = Vec3d::Ones();
if (m3x3.col(0).dot(m3x3.col(1).cross(m3x3.col(2))) < 0.0)
{
mirror(0) = -1.0;
// remove mirror
m3x3.col(0) *= -1.0;
}
set_mirror(mirror);
// scale
set_scaling_factor(Vec3d(m3x3.col(0).norm(), m3x3.col(1).norm(), m3x3.col(2).norm()));
// remove scale
m3x3.col(0).normalize();
m3x3.col(1).normalize();
m3x3.col(2).normalize();
// rotation
set_rotation(extract_euler_angles(m3x3));
// forces matrix recalculation matrix
m_matrix = get_matrix();
// // debug check
// if (!m_matrix.isApprox(transform))
// std::cout << "something went wrong in extracting data from matrix" << std::endl;
}
const Transform3d& Transformation::get_matrix(bool dont_translate, bool dont_rotate, bool dont_scale, bool dont_mirror) const
{
if (m_dirty || m_flags.needs_update(dont_translate, dont_rotate, dont_scale, dont_mirror))
@ -1335,6 +1379,10 @@ const Transform3d& Transformation::get_matrix(bool dont_translate, bool dont_rot
return m_matrix;
}
Transformation Transformation::operator * (const Transformation& other) const
{
return Transformation(get_matrix() * other.get_matrix());
}
#endif // ENABLE_MODELVOLUME_TRANSFORM
} }