[#mp_units-quantity_point-08-point_for-0b]
= xref:mp_units.adoc[mp_units]::xref:mp_units/quantity_point-08.adoc[quantity_point]::point_for
:relfileprefix: ../../
:mrdocs:

Re‐expresses this quantity point relative to a point origin anchored to a different absolute point origin, via a user‐defined `frame_projection`.

== Synopsis

Declared in `<mp‐units/framework/quantity_point.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<
    xref:mp_units/PointOrigin.adoc[PointOrigin] NewPO,
    typename... Args>
requires detail::HasFrameProjection<absolute_point_origin, detail::get_absolute_point_origin(NewPO{})> &&
             requires(quantity_point<reference, absolute_point_origin, Rep> at_src, Args... args) {
               {
                 frame_projection<absolute_point_origin, detail::get_absolute_point_origin(NewPO{})>(at_src, args...)
               } ‐> QuantityPointOf<detail::get_absolute_point_origin(NewPO{})>;
             }
[[nodiscard]]
constexpr
xref:mp_units/QuantityPointOf.adoc[QuantityPointOf<(NewPO{})>] auto
point_for(
    NewPO new_origin,
    Args&&... args) const;
----

== Return Value

This quantity point measured from `new_origin`.

[NOTE]
====
The return value https://en.cppreference.com/cpp/language/attributes/nodiscard[should not be discarded^].
====
== Parameters

[cols="1,4"]
|===
| Name| Description
| *new_origin*
| the point origin to express this quantity point from
| *args*
| extra arguments forwarded to the `frame_projection` between the two absolute point origins
|===


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