205 lines
5.4 KiB
C++
205 lines
5.4 KiB
C++
/*
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----
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This file is part of SECONDO.
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Copyright (C) 2004, University in Hagen, Department of Computer Science,
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Database Systems for New Applications.
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SECONDO is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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SECONDO is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with SECONDO; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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----
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This file was originally written by Christopher John Kline, under the copy
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right statement below. Mahomud Sakr, September 2011, has made the necessary
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changes to make it available as a SECONDO operator.
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Copyright (C) 1996, Christopher John Kline
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Electronic mail: ckline@acm.org
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This software may be freely copied, modified, and redistributed
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for academic purposes and by not-for-profit organizations, provided that
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this copyright notice is preserved on all copies, and that the source
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code is included or notice is given informing the end-user that the source
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code is publicly available under the terms described here.
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Persons or organizations wishing to use this code or any modified version
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of this code in a commercial and/or for-profit manner must contact the
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author via electronic mail (preferred) or other method to arrange the terms
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of usage. These terms may be as simple as giving the author visible credit
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in the final product.
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There is no warranty or other guarantee of fitness for this software,
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it is provided solely "as is". Bug reports or fixes may be sent
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to the author, who may or may not act on them as he desires.
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If you use this software the author politely requests that you inform him
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via electronic mail.
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SimObject.h
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INTERFACE: Base class for all object components of the VRRR project
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(c) 1996 Christopher Kline <ckline@acm.org>
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September 2011 Mahmoud Sakr: The Boids simulator/data-generator is now
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available as a SECONDO operator.
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*/
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// Forward declare SimObject so that the classes that are #included
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// below will know about it.
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class SimObject;
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#ifndef __SIMOBJECT_H
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#define __SIMOBJECT_H
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#include "Vector.h"
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#include<limits>
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class SimObject {
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public:
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// -- Query Methods --
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virtual double getMass(void) const;
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// Returns the mass of the object in kilograms.
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virtual const MathVector &getVelocity(void) const;
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// Returns the current velocity of this object's center of mass
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// (in world coordinates) in m/s.
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virtual const MathVector &getPosition(void) const;
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// Returns the current position of this object's center of mass
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// (in world coordinates) in m.
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virtual const MathVector &getDimensions(void) const;
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// Returns the dimensions [x,y,z] = [length, width, height] of
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// this object's minimal bounding box. See the description of the
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// 'dimensions' vector below for more detail.
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// -- Modification Methods
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virtual bool update(const double &elapsedSeconds);
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// The simulation will call this method, which updates the object
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// based on its current state, the current elapsed time in
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// seconds, and the external and internal forces acting upon it.
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// A return value of FALSE indicates that some sort of error has
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// occured during the update.
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virtual void setDimensions(const MathVector newDimensions);
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// Set the dimensions of this system
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SimObject(void);
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// Default constructor
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virtual ~SimObject(void);
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// Destructor
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protected:
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MathVector velocity;
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// Current velocity of this object's center of mass (in 3-space)
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// in m/s. (assuming +y is up, +z is through the nose, +x is through
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// the left wing)
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MathVector position;
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// Current position of this object's center of mass (in 3-space)
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// in m. (assuming y is the altitude, (x, z) are the 2D coordinates
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// (see the description of the velocity components))
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MathVector dimensions;
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// Vector defining the minimal bounding box for this
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// object. Length is defined as being parallel to the body axis
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// which is aligned with the normal direction of movement. Height
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// in the vertical direction and perpendicular to the Length-Width
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// plane. Width is perpendicular to the Length and Height.
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//
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// dimensions.{x,y,z} = {length, width, height}
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double mass;
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// Mass of this object in kilograms.
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double lastUpdate;
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// Last time this object was updated via update().
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private:
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};
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// ------------ inline methods --------------------------------------
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inline const MathVector &
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SimObject::getVelocity(void) const {
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return velocity;
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}
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inline const MathVector &
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SimObject::getPosition(void) const {
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return position;
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}
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inline const MathVector &
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SimObject::getDimensions(void) const {
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return dimensions;
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}
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inline double
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SimObject::getMass(void) const {
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return mass;
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}
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inline bool
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SimObject::update(const double &elapsedSeconds) {
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lastUpdate = elapsedSeconds;
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return true;
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}
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inline void
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SimObject::setDimensions(const MathVector newDimensions) {
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dimensions = newDimensions;
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}
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inline
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SimObject::SimObject(void) {
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position = velocity = dimensions = MathVector(0, 0, 0);
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lastUpdate = 0;
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}
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inline
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SimObject::~SimObject(void) {
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}
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#endif // __SIMOBJECT_H
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