102 lines
3.3 KiB
C++
102 lines
3.3 KiB
C++
// Filename: linearIntegrator.cxx
|
|
// Created by: charles (02Aug00)
|
|
//
|
|
////////////////////////////////////////////////////////////////////
|
|
//
|
|
// 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."
|
|
//
|
|
////////////////////////////////////////////////////////////////////
|
|
|
|
#include "linearIntegrator.h"
|
|
#include "config_physics.h"
|
|
#include "physicalNode.h"
|
|
#include "forceNode.h"
|
|
|
|
ConfigVariableDouble LinearIntegrator::_max_linear_dt
|
|
("default_max_linear_dt", 1.0f / 30.0f);
|
|
|
|
|
|
////////////////////////////////////////////////////////////////////
|
|
// Function : BaseLinearIntegrator
|
|
// Access : Protected
|
|
// Description : constructor
|
|
////////////////////////////////////////////////////////////////////
|
|
LinearIntegrator::
|
|
LinearIntegrator() {
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////
|
|
// Function : ~LinearIntegrator
|
|
// Access : public, virtual
|
|
// Description : destructor
|
|
////////////////////////////////////////////////////////////////////
|
|
LinearIntegrator::
|
|
~LinearIntegrator() {
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////
|
|
// Function : integrate
|
|
// Access : public
|
|
// Description : parent integration routine, hands off to child
|
|
// virtual.
|
|
////////////////////////////////////////////////////////////////////
|
|
void LinearIntegrator::
|
|
integrate(Physical *physical, LinearForceVector &forces,
|
|
PN_stdfloat dt) {
|
|
/* <-- darren, 2000.10.06
|
|
// cap dt so physics don't go flying off on lags
|
|
if (dt > _max_linear_dt)
|
|
dt = _max_linear_dt;
|
|
*/
|
|
|
|
PhysicsObject::Vector::const_iterator current_object_iter;
|
|
current_object_iter = physical->get_object_vector().begin();
|
|
for (; current_object_iter != physical->get_object_vector().end();
|
|
++current_object_iter) {
|
|
PhysicsObject *current_object = *current_object_iter;
|
|
|
|
// bail out if this object doesn't exist or doesn't want to be
|
|
// processed.
|
|
if (current_object == (PhysicsObject *) NULL) {
|
|
continue;
|
|
}
|
|
|
|
// set the object's last position to its current position before we move it
|
|
current_object->set_last_position(current_object->get_position());
|
|
}
|
|
child_integrate(physical, forces, dt);
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////
|
|
// Function : output
|
|
// Access : Public
|
|
// Description : Write a string representation of this instance to
|
|
// <out>.
|
|
////////////////////////////////////////////////////////////////////
|
|
void LinearIntegrator::
|
|
output(ostream &out) const {
|
|
#ifndef NDEBUG //[
|
|
out<<"LinearIntegrator";
|
|
#endif //] NDEBUG
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////
|
|
// Function : write
|
|
// Access : Public
|
|
// Description : Write a string representation of this instance to
|
|
// <out>.
|
|
////////////////////////////////////////////////////////////////////
|
|
void LinearIntegrator::
|
|
write(ostream &out, unsigned int indent) const {
|
|
#ifndef NDEBUG //[
|
|
out.width(indent); out<<""; out<<"LinearIntegrator:\n";
|
|
out.width(indent+2); out<<""; out<<"_max_linear_dt "<<_max_linear_dt<<" (class static)\n";
|
|
BaseIntegrator::write(out, indent+2);
|
|
#endif //] NDEBUG
|
|
}
|