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/* -*- Mode:C++; c-basic-offset:8; tab-width:8; indent-tabs-mode:t -*- */
/*
* shadowing-vis.h
* Copyright (C) 2000 by the University of Southern California
* $Id: shadowing-vis.h,v 1.4 2010/03/08 05:54:52 tom_henderson Exp $
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
*
*
* The copyright of this module includes the following
* linking-with-specific-other-licenses addition:
*
* In addition, as a special exception, the copyright holders of
* this module give you permission to combine (via static or
* dynamic linking) this module with free software programs or
* libraries that are released under the GNU LGPL and with code
* included in the standard release of ns-2 under the Apache 2.0
* license or under otherwise-compatible licenses with advertising
* requirements (or modified versions of such code, with unchanged
* license). You may copy and distribute such a system following the
* terms of the GNU GPL for this module and the licenses of the
* other code concerned, provided that you include the source code of
* that other code when and as the GNU GPL requires distribution of
* source code.
*
* Note that people who make modified versions of this module
* are not obligated to grant this special exception for their
* modified versions; it is their choice whether to do so. The GNU
* General Public License gives permission to release a modified
* version without this exception; this exception also makes it
* possible to release a modified version which carries forward this
* exception.
*
*/
/*
* Visibiliy-based Shadowing propation model. A bitmap is used for the
* simulation environment. It has 2 shadowing model instances that
* represent good (has line-of-sight path) and bad (obstructed)
* propagation conditions.
* Wei Ye, weiye@isi.edu, 2000
*/
#ifndef visibiliy_shadowing_h
#define visibiliy_shadowing_h
#include <shadowing.h>
#include <packet-stamp.h>
#include <wireless-phy.h>
#include <propagation.h>
class ShadowingVis : public Propagation {
public:
ShadowingVis();
virtual double Pr(PacketStamp *tx, PacketStamp *rx, WirelessPhy *ifp);
virtual double getDist(double Pr, double Pt, double Gt, double Gr,
double hr, double ht, double L, double lambda);
virtual int command(int argc, const char*const* argv);
// bitmap handling
void loadImg(const char* fname);
inline char get_pixel(int x, int y) {
if (x<0 || x>=width || y<0 || y>=height) return 0;
return pixel[x + y * width];
}
/*
inline void set_pixel(int x, int y, char c) {
if (x<0 || x>=width || y<0 || y>=height) return;
pixel[(x + y * width)] = c;
}
inline unsigned int RGB( int r, int g, int b ) {
return (((r << 8) | g) << 8) | b;
}
*/
// get prop condition: good or bad
int getPropCond(float xr, float yr, float xt, float yt);
protected:
Shadowing *goodProp, *badProp; // two shadowing models
unsigned char *pixel; // bitmap pixels
int width, height;
int ppm; // number of pixels per meter
};
#endif
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