| y_constraint {particles} | R Documentation |
Fixes particles to a vertical position
Description
This constraint simply prevents particles from moving in the y direction. For
particles where the constraint evaluates to NA this constraint is ignored.
If the constraint is enforced the velocity in the y direction will be set to
0.
Training parameters
The following parameters defines the training of the constraint and can be
passed along a call to impose()
-
y: The position on the y-axis to fix to. (tidy eval) -
ymin: The lowest permissible y-value. IfNULLthenywill be used. (tidy eval) -
ymax: The highest permissible y-value. IfNULLthenywill be used. (tidy eval)
See Also
Other constraints:
dominator_constraint,
infinity_constraint,
path_constraint,
polygon_constraint,
velocity_constraint,
x_constraint
[Package particles version 0.2.3 Index]