| usage | description
|
|---|
| ff run [on|off|tog] | Enables running of forcefield on force objects
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| ff step [N] | Runs the forcefield for [N=1] timesteps and then stops
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| ff tsLen [N] | sets timestep length to [N]
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| ff covalentFailDist [N] | sets covalent bonding fail distance (distance which bonded atoms can drift from bond limits)
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| ff zeroVel [on|off|tog] | sets velocities of force objects to zero at start of each timestep
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| ff maxStericDist [N] | sets maximum distance for steric interactions (distance between force object center-of-masses)
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| ff maxElectroDist [N] | sets maximum distance for electrostatic interactions (distance between charged atoms)
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| ff maxHbondDist [N] | sets maximum distance for hydrogen bonding interactions (distance between hydrogen and acceptor atom)
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| ff maxRingStackDist [N] | sets maximum distance for ring stacking interactions (distance between ring center-of-masses)
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| ff hbondScaleForce [N] | sets scale factor for hydrogen bond force
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| ff covalentScaleForce [N] | sets scale factor for covalent bonds
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| ff ringStackScaleForce [N] | sets scale factor for aromatic ring stacking interactions
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| ff electroScaleForce [N] | sets scale factor for electrostatic interactions
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| ff stericForceEnabled [on|off|tog] | Enables steric force
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| ff torsionForceEnabled [on|off|tog] | Enables torsion force
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| ff hbondForceEnabled [on|off|tog] | Enables hbond force
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| ff covalentForceEnabled [on|off|tog] | Enables covalent bond force
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| ff ringStackForceEnabled [on|off|tog] | Enables ring-stacking force
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| ff electroForceEnabled [on|off|tog] | Enables electrostatic force
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| ff movementEnabled [on|off|tog] | Enables timestep movement
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| ff linFriction [N] | sets friction factor on linear movement
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| ff rotFriction [N] | sets friction factor on rotational movement
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| ff maxMove [N] | sets limit on maximum linear movement in a timestep
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| ff maxRot [N] | sets limit on maximum rotational movement in a timestep
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| ff nbeProject [N] | sets projection of non-bonding electrons along atom radius, as a fraction of the vdw boundary
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| ff stericAttractExp [N] | sets steric force attraction exponent
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| ff stericRepulseExp [N] | sets steric force repulsion exponent
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| ff vdwTorsionScale [N] | sets the scaling factor for van der waals radii used in torsion force calculation
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| ff hbElectroScale [N] | sets the scaling factor for hydrogen bond electrostatic force
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| ff hbElectroCalcEnabled [on|off|tog] | Enables hydrogen-bonding electrostatic force
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| ff volBounceEnabled [on|off|tog] | Enables bouncing off volume boundaries
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| ff volBounceForce [N] | Sets/shows magnitude of volume bounce force
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| ff energyCalcEnabled [on|off|tog] | Enables energy calculation in addition to force calculation
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| ff reportStats | reports interaction statistics for most recent timestep
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| ff timestepsPerTick [N] | sets the number of timesteps that are done in each application timer event tick
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| ff reset | Resets the timestep context to initial state (clears timestep statistics and count), but does not change current ff parameters.
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| ff resetTsCount | Resets the timestep counter to zero.
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| ff setFfParamDefaults | Sets the timestep parameters to default values.
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| ff paramsWrite <outFileName> | Writes all forcefield global settings to 'outFileName'.
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| ff paramsRead <inFileName> | Reads all forcefield global settings from 'inFileName'.
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| ff paramsReport | Reports all forcefield global settings to status window.
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| ff fo | Force Object commands
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| ff movie | Forcefield movie commands.
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| ff cfc | Custom Force Container commands
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