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