historical/toontown-classic.git/panda/include/linearDistanceForce.I
2024-01-16 11:20:27 -06:00

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/**
* PANDA 3D SOFTWARE
* Copyright (c) Carnegie Mellon University. All rights reserved.
*
* All use of this software is subject to the terms of the revised BSD
* license. You should have received a copy of this license along
* with this source code in a file named "LICENSE."
*
* @file linearDistanceForce.I
* @author charles
* @date 2000-06-21
*/
/**
* falloff_type encapsulating wrap
*/
INLINE void LinearDistanceForce::
set_falloff_type(FalloffType ft) {
_falloff = ft;
}
/**
* set the radius
*/
INLINE void LinearDistanceForce::
set_radius(PN_stdfloat r) {
_radius = r;
}
/**
* set the force center
*/
INLINE void LinearDistanceForce::
set_force_center(const LPoint3& p) {
_force_center = p;
}
/**
* falloff_type query
*/
INLINE LinearDistanceForce::FalloffType LinearDistanceForce::
get_falloff_type() const {
return _falloff;
}
/**
* radius query
*/
INLINE PN_stdfloat LinearDistanceForce::
get_radius() const {
return _radius;
}
/**
* force_center query
*/
INLINE LPoint3 LinearDistanceForce::
get_force_center() const {
return _force_center;
}
/**
* calculate the term based on falloff
*/
INLINE PN_stdfloat LinearDistanceForce::
get_scalar_term() const {
PN_stdfloat r = _radius;
if (_falloff == FT_ONE_OVER_R_SQUARED)
r = r * r;
else if (_falloff == FT_ONE_OVER_R_CUBED)
r = r * r * r;
return (1.0f / r);
}