You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
135 lines
3.2 KiB
135 lines
3.2 KiB
/***************************************************************************
|
|
* Copyright (C) 2005 by David Saxton *
|
|
* david@bluehaze.org *
|
|
* *
|
|
* This program is free software; you can redistribute it and/or modify *
|
|
* it under the terms of the GNU General Public License as published by *
|
|
* the Free Software Foundation; either version 2 of the License, or *
|
|
* (at your option) any later version. *
|
|
***************************************************************************/
|
|
|
|
#ifndef MECHANICSSIMULATION_H
|
|
#define MECHANICSSIMULATION_H
|
|
|
|
#include <tqguardedptr.h>
|
|
#include <tqobject.h>
|
|
#include <tqvaluelist.h>
|
|
|
|
class MechanicsItem;
|
|
class MechanicsDocument;
|
|
typedef TQValueList<MechanicsItem*> MechanicsItemList;
|
|
|
|
|
|
/**
|
|
@short 2 dimensional vector with associated length functions et al
|
|
@author David Saxton
|
|
*/
|
|
class Vector2D
|
|
{
|
|
public:
|
|
Vector2D();
|
|
|
|
double length() const;
|
|
double lengthSquared() const { return x*x + y*y; }
|
|
|
|
double x;
|
|
double y;
|
|
};
|
|
|
|
|
|
/**
|
|
@short State of a rigid body, in an inertial MechanicsDocument frame
|
|
@author David Saxton
|
|
*/
|
|
class RigidBodyState
|
|
{
|
|
public:
|
|
RigidBodyState();
|
|
|
|
Vector2D linearMomentum;
|
|
double angularMomentum;
|
|
Vector2D position; // Position of center of mass
|
|
};
|
|
|
|
|
|
/**
|
|
@author David Saxton
|
|
*/
|
|
class MechanicsSimulation : public TQObject
|
|
{
|
|
Q_OBJECT
|
|
TQ_OBJECT
|
|
public:
|
|
MechanicsSimulation( MechanicsDocument *mechanicsDocument );
|
|
~MechanicsSimulation();
|
|
|
|
MechanicsDocument* mechanicsDocument() const { return p_mechanicsDocument; }
|
|
|
|
protected slots:
|
|
void slotAdvance();
|
|
|
|
protected:
|
|
TQGuardedPtr<MechanicsDocument> p_mechanicsDocument;
|
|
TQTimer *m_advanceTmr;
|
|
};
|
|
|
|
|
|
/**
|
|
Rigid body with mass, inertia, etc. Collection of mechanics items with
|
|
functionality for moving them about, rotating, etc. Only one mother-parent
|
|
(has no parent itself, all other items are descendents) allowed.
|
|
@short Rigid body, handles MechanicsItems
|
|
@author David Saxton
|
|
*/
|
|
class RigidBody
|
|
{
|
|
public:
|
|
RigidBody( MechanicsDocument *mechanicsDocument );
|
|
~RigidBody();
|
|
|
|
/**
|
|
*
|
|
*/
|
|
void advance( int phase, double delta );
|
|
/**
|
|
* Add the MechanicsItem to the entity.
|
|
* @returns true iff successful in adding
|
|
*/
|
|
bool addMechanicsItem( MechanicsItem *item );
|
|
/**
|
|
* Pointer to the mother MechanicsItem.
|
|
*/
|
|
MechanicsItem *overallParent() const { return p_overallParent; }
|
|
/**
|
|
* Updates the mass and the moment of inertia info
|
|
*/
|
|
void updateRigidBodyInfo();
|
|
|
|
protected:
|
|
/**
|
|
* Attempt to find the overall parent.
|
|
* @returns false iff unsucessful (including if there are no MechanicsItems present)
|
|
*/
|
|
bool findOverallParent();
|
|
/**
|
|
* Move the set of MechanicsItems by the given amount
|
|
*/
|
|
void moveBy( double dx, double dy );
|
|
/**
|
|
* Rotate the set of MechanicsItems by the given amount about the center of
|
|
* mass.
|
|
* @param angle Rotate amount in radians
|
|
*/
|
|
void rotateBy( double dtheta );
|
|
|
|
MechanicsItemList m_mechanicsItemList;
|
|
MechanicsItem *p_overallParent;
|
|
MechanicsDocument *p_mechanicsDocument;
|
|
|
|
RigidBodyState m_rigidBodyState;
|
|
double m_mass;
|
|
double m_momentOfInertia;
|
|
};
|
|
|
|
#endif
|