topography.cc
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- /* -*- Mode:C++; c-basic-offset:8; tab-width:8; indent-tabs-mode:t -*- */
- /*
- * Copyright (c) 1997 Regents of the University of California.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the Computer Systems
- * Engineering Group at Lawrence Berkeley Laboratory.
- * 4. Neither the name of the University nor of the Laboratory may be used
- * to endorse or promote products derived from this software without
- * specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
- /* Ported from CMU/Monarch's code, nov'98 -Padma.*/
- #include <math.h>
- #include <stdlib.h>
- #include "object.h"
- #include "dem.h"
- #include "topography.h"
- static class TopographyClass : public TclClass {
- public:
- TopographyClass() : TclClass("Topography") {}
- TclObject* create(int, const char*const*) {
- return (new Topography);
- }
- } class_topography;
- double
- Topography::height(double x, double y) {
- if(grid == 0)
- return 0.0;
- #ifndef WIN32
- int a = (int) rint(x/grid_resolution);
- int b = (int) rint(y/grid_resolution);
- int c = (int) rint(maxY);
- #else
- int a = (int) ceil(x/grid_resolution+0.5);
- int b = (int) ceil(y/grid_resolution+0.5);
- int c = (int) ceil(maxY+0.5);
- #endif /* !WIN32 */
- return (double) grid[a * c + b];
- }
- int
- Topography::load_flatgrid(int x, int y, int res)
- {
- /* No Reason to malloc a grid */
- grid_resolution = res; // default is 1 meter
- maxX = (double) x;
- maxY = (double) y;
- return 0;
- }
- int
- Topography::load_demfile(const char *fname)
- {
- DEMFile *dem;
- fprintf(stderr, "Opening DEM file %s...n", fname);
- dem = new DEMFile((char*) fname);
- if(dem == 0)
- return 1;
- fprintf(stderr, "Processing DEM file...n");
- grid = dem->process();
- if(grid == 0) {
- delete dem;
- return 1;
- }
- dem->dump_ARecord();
- double tx, ty; tx = maxX; ty = maxY;
- dem->range(tx, ty); // Get the grid size
- maxX = tx; maxY = ty;
- dem->resolution(grid_resolution); // Get the resolution of each entry
- /* Close the DEM file */
- delete dem;
- /*
- * Sanity Check
- */
- if(maxX <= 0.0 || maxY <= 0.0 || grid_resolution <= 0.0)
- return 1;
- fprintf(stderr, "DEM File processing complete...n");
- return 0;
- }
- void
- Topography::updateNodesList(class MobileNode* mn, double oldX)
- {
- channel_->updateNodesList(mn, oldX);
- }
- int
- Topography::command(int argc, const char*const* argv)
- {
- if(argc == 3) {
- if(strcmp(argv[1], "load_demfile") == 0) {
- if(load_demfile(argv[2]))
- return TCL_ERROR;
- return TCL_OK;
- } else if (strcmp(argv[1], "channel") == 0) {
- WirelessChannel *chan;
- chan = (WirelessChannel *)TclObject::lookup(argv[2]);
- if (chan == 0) {
- fprintf(stderr, "%s lookup of channel failedn", argv[1]);
- return TCL_ERROR;
- } else {
- channel_ = chan;
- return TCL_OK;
- }
- }
- }
- else if(argc == 4) {
- if(strcmp(argv[1], "load_flatgrid") == 0) {
- if(load_flatgrid(atoi(argv[2]), atoi(argv[3])))
- return TCL_ERROR;
- return TCL_OK;
- }
- }
- else if(argc == 5) {
- if(strcmp(argv[1], "load_flatgrid") == 0) {
- if(load_flatgrid(atoi(argv[2]), atoi(argv[3]), atoi(argv[4])))
- return TCL_ERROR;
- return TCL_OK;
- }
- }
- return TclObject::command(argc, argv);
- }