VariantTransform.cc File Reference

#include "VariantTransform.hh"
#include "corecel/cont/VariantUtils.hh"
#include "orange/BoundingBoxUtils.hh"
#include "detail/TransformTransformer.hh"
#include "detail/TransformTranslator.hh"

Functions
VariantTransform	celeritas::apply_transform (VariantTransform const &left, VariantTransform const &right)
	Apply the left "daughter-to-parent" transform to the right.
BBox	celeritas::apply_transform (VariantTransform const &transform, BBox const &bbox)
	Dispatch "daughter-to-parent" transform to bounding box utilities.
VariantTransform	celeritas::calc_inverse (VariantTransform const &transform)
	Calculate the inverse of a transform.

Function Documentation

apply_transform()

VariantTransform celeritas::apply_transform	(	VariantTransform const &	left,
		VariantTransform const &	right
	)

Apply the left "daughter-to-parent" transform to the right.

The resulting variant may be a monostate (identity), translation (no rotation), or full transformation.

The resulting transform has rotation

\[ \mathbf{R}' = \mathbf{R}_2 \]

and translation

\[ \mathbf{t}' = \mathbf{R}_1\mathbf{t}_2 + \mathbf{t}_1 \]