106 lines
2.3 KiB
C++
106 lines
2.3 KiB
C++
/**
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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 linearForce.cxx
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* @author charles
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* @date 2000-06-14
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*/
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#include "datagram.h"
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#include "datagramIterator.h"
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#include "bamReader.h"
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#include "bamWriter.h"
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#include "linearForce.h"
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TypeHandle LinearForce::_type_handle;
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/**
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* Default/component-based constructor
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*/
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LinearForce::
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LinearForce(PN_stdfloat a, bool mass) :
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BaseForce(true),
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_amplitude(a), _mass_dependent(mass),
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_x_mask(true), _y_mask(true), _z_mask(true) {
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}
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/**
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* copy constructor
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*/
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LinearForce::
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LinearForce(const LinearForce& copy) :
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BaseForce(copy) {
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_amplitude = copy._amplitude;
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_mass_dependent = copy._mass_dependent;
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_x_mask = copy._x_mask;
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_y_mask = copy._y_mask;
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_z_mask = copy._z_mask;
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}
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/**
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* Destructor
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*/
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LinearForce::
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~LinearForce() {
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}
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/**
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*/
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LVector3 LinearForce::
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get_vector(const PhysicsObject *po) {
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LVector3 child_vector = get_child_vector(po) * _amplitude;
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nassertr(!child_vector.is_nan(), LVector3::zero());
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if (_x_mask == false)
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child_vector[0] = 0.0f;
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if (_y_mask == false)
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child_vector[1] = 0.0f;
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if (_z_mask == false)
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child_vector[2] = 0.0f;
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return child_vector;
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}
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/**
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*/
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bool LinearForce::
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is_linear() const {
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return true;
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}
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/**
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* Write a string representation of this instance to <out>.
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*/
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void LinearForce::
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output(std::ostream &out) const {
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#ifndef NDEBUG //[
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out<<"LinearForce (id "<<this<<")";
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#endif //] NDEBUG
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}
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/**
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* Write a string representation of this instance to <out>.
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*/
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void LinearForce::
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write(std::ostream &out, int indent) const {
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#ifndef NDEBUG //[
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out.width(indent); out<<""; out<<"LinearForce (id "<<this<<")\n";
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out.width(indent+2); out<<""; out<<"_amplitude "<<_amplitude<<"\n";
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out.width(indent+2); out<<""; out<<"_mass_dependent "<<_mass_dependent<<"\n";
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out.width(indent+2); out<<""; out<<"_x_mask "<<_x_mask<<"\n";
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out.width(indent+2); out<<""; out<<"_y_mask "<<_y_mask<<"\n";
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out.width(indent+2); out<<""; out<<"_z_mask "<<_z_mask<<"\n";
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BaseForce::write(out, indent+2);
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#endif //] NDEBUG
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}
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