adrien/netradiant-custom
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improve rotate-snap to align bbox axially as much as possible

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Garux
2024-10-28 16:55:56 +05:00
parent 7451bd8a3d
commit 679ebd945a
1 changed files with 23 additions and 1 deletions
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radiant/selection.cpp
+23 -1
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@@ -453,6 +453,28 @@ public:
};
/// \brief constructs Quaternion so that rotated box geometry ends up aligned to one or more axes (depends on how much axial \p to is).
inline Quaternion quaternion_for_unit_vectors_for_bounds( const Vector3& axialfrom, const Vector3& to ){
// do step by step from the larger component to the smaller one
size_t ids[3] = { vector3_max_abs_component_index( to ), ( ids[0] + 1 ) %3, ( ids[0] + 2 ) %3 };
if( std::fabs( to[ids[2]] ) > std::fabs( to[ids[1]] ) )
std::swap( ids[2], ids[1] );
Vector3 steps[3] = { g_vector3_axes[ids[0]] * std::copysign( 1.f, to[ids[0]] ), to, to };
Quaternion rotation = quaternion_for_unit_vectors_safe( axialfrom, steps[0] );
if( std::fabs( to[ids[1]] ) > 1e-6f ){
steps[1][ids[2]] = 0;
vector3_normalise( steps[1] );
rotation = quaternion_multiplied_by_quaternion( quaternion_for_unit_vectors( steps[0], steps[1] ), rotation );
if( std::fabs( to[ids[2]] ) > 1e-6f ){
rotation = quaternion_multiplied_by_quaternion( quaternion_for_unit_vectors( steps[1], to ), rotation );
}
}
return rotation;
}
class AllTransformable
{
public:
@@ -547,7 +569,7 @@ public:
const Ray ray = ray_for_device_point( matrix4_full_inverse( m_view->GetViewMatrix() ), device_point );
const Vector3 nrm = test->plane? Vector3( test->plane->normal() ) : -ray.direction;
if( alt ){ // rotate-snap
const Quaternion rotation = quaternion_for_unit_vectors_safe( g_vector3_axes[m_roatateAxis] * m_rotateSign, nrm );
const Quaternion rotation = quaternion_for_unit_vectors_for_bounds( g_vector3_axes[m_roatateAxis] * m_rotateSign, nrm );
const Matrix4 unrot = matrix4_rotation_for_quaternion( quaternion_inverse( rotation ) );
const Vector3 unray = matrix4_transformed_direction( unrot,
test->plane