small doc changes

This commit is contained in:
Andreas Fabri 2020-09-15 14:31:35 +01:00
parent 5b21794bf6
commit 95556e2359
2 changed files with 3 additions and 5 deletions

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@ -3,9 +3,7 @@
\cgalConcept
The concept `GetFilter` describes the requirements for the <I>policy
function object</I> which gets the <I>collapse placement</I> of an edge,
that is, the new position of the vertex that remains after a
halfedge-collapse operation.
function object</I> which gets the profile and placement of an edge.
The placement returned is a `boost::optional` value (i.e., it can
be absent). The value `boost::none` indicates that the edge should not be collapsed.
@ -36,4 +34,4 @@ public:
/// @}
}; /* end GetPlacement */
}; /* end Filter */

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@ -215,7 +215,7 @@ On the one hand, this dramatically saves on memory but on the other hand is
a processing waste because when an edge is effectively collapsed, `GetPlacement`
must be called <I>again</I> to know were to move the remaining vertex.
Earlier prototypes shown that attaching the placement to the edge, thus avoiding one
Earlier prototypes showed that attaching the placement to the edge, thus avoiding one
redundant call to the placement function after the edge collapsed, has little
impact on the total running time. This is because the cost of an each edge is not just
computed once but changes several times during the process so the placement function