This constraint simply prevents particles from moving in the x direction. For
particles where the constraint evaluates to NA
this constraint is ignored.
If the constraint is enforced the velocity in the x direction will be set to
0
.
The following parameters defines the training of the constraint and can be
passed along a call to impose()
x
: The position on the x-axis to fix to. (tidy eval)
xmin
: The lowest permissible x-value. If NULL
then x
will be used. (tidy eval)
xmax
: The highest permissible x-value. If NULL
then x
will be used. (tidy eval)
Other constraints:
dominator_constraint
,
infinity_constraint
,
path_constraint
,
polygon_constraint
,
velocity_constraint
,
y_constraint