SupplyMap.cpp

/*=========================================================================
 
	Program: VascuSynth
	Module: $RCSfile: SupplyMap.cpp,v $
	Language: C++
	Date: $Date: 2011/02/08 10:43:00 $
	Version: $Revision: 1.0 $

Copyright (c) 2011 Medical Imaging Analysis Lab, Simon Fraser University, 
British Columbia, Canada.
All rights reserved.

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nor of any contributors, may be used to endorse or promote products derived
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misrepresented as being the original software.
 
* Free for non-commercial use only.  For commercial use, explicit approval 
must be requested by contacting the Authors.

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* Modifications of the source code must also be released as open source 

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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE FOR
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=========================================================================*/

#include <iostream>
#include <vector>
#include <fstream>
#include <cstring>
#include <stdlib.h>
#include <string>
#include <cmath>

#include "SupplyMap.h"

using namespace std;

// A parametric macro to allow the use of dynamic multi-dimensional arrays
#define arr(arr,w,x,y,z,dim) *(arr + (z + dim[3]*(y + dim[2]*(x + dim[1]*(w)))))


/**
 * calculate the reduction to target if supplied becomes a terminal node
 */
double SupplyMap::reduction(int supplied[], int target[]){
	if(supplied[0] == target[0] && supplied[1] == target[1] && supplied[2] == target[2])
		return 0;

	double dist = sqrt(pow((double)(supplied[0] - target[0]), 2) + pow((double)(supplied[1] - target[1]),2 )+ pow((double)(supplied[2] - target[2]), 2));
	double acc = 0;

	if(arr(map_d, target[0], target[1], target[2], dim[3]-1, dim) <= dist)
		return 1;
	
	for(int i = 0; i < dim[3]; i++){
		acc += pow(dist, i)*arr(map_d, target[0], target[1], target[2], i, dim);
	}
	
	acc = 1.0 - (1.0/acc);
	acc = (acc < 0 ? 0 : acc);
	
	
	return acc;
}

/**
 * load a file containing the description of an supply map
 */
void SupplyMap::loadMap(string filename){
	
	char * tempFilename;
	
	tempFilename = new char[filename.size()+1];
	strcpy(tempFilename, filename.c_str());
	
	int lastIndex = strlen(tempFilename)-1;
	
	while ((tempFilename[lastIndex] == '\r') || (tempFilename[lastIndex] == '\n') || (tempFilename[lastIndex] == ' ')) {
		tempFilename[lastIndex] = '\0';
		lastIndex--;
	}
	
	ifstream mapFile;
	mapFile.open(tempFilename, ios::in);
	string line;
		
	if (mapFile.is_open()) {
        
		// defining i,j,k,l outside of the for stament 
        // so this is compatable with both VC++ 6.0 and later versions
		int i;
        int j;
        int k;
        int l; 

		getline(mapFile, line);
		char * tok = new char[line.size()+1];
		strcpy(tok, line.c_str());
		
		for(i = 0; i < 4; i++){
			char * temp = strtok((i == 0? tok : NULL), " ");
			if(temp == NULL) {
				break;
			}
			dim[i] = atoi(temp);
		}
		
		//get the dimensions
		map_d = new double[dim[0]*dim[1]*dim[2]*dim[3]];

		for(i = 0; i < dim[0]; i++) {
			for(j = 0; j < dim[1]; j++) {
				for(k = 0; k < dim[2]; k++) {
					arr(map_d,i,j,k,dim[3]-1,dim) = 0;
				}
			}
		}

		//get the regions
		
		while(!mapFile.eof()){
			
			getline(mapFile, line);
			tok = new char[line.size()+1];
			strcpy(tok, line.c_str());
			
			int region[6];
			for(i = 0; i < 6; i++){
				char * temp = strtok((i == 0? tok : NULL), " ");
				if(temp == NULL) {
					break;
				}
				region[i] = atoi(temp);
			}
				
			if(mapFile.eof()) {
				break;
			}

			getline(mapFile, line);
			tok = new char[line.size()+1];
			strcpy(tok, line.c_str());

			double *values = new double[dim[3]];
			for(i = 0; i < dim[3]; i++) {
				values[i] = atof(strtok((i == 0? tok : NULL), " "));
			}

			for(i = region[0]; i < region[3]; i++) {
				for(j = region[1]; j< region[4]; j++) {
					for(k = region[2]; k < region[5]; k++) {
						for(l = 0; l < dim[3]; l++) {
							arr(map_d, i, j, k, l, dim) = values[l];
						}
					}
				}
			}
			 
		}
		 
	
		mapFile.close();
	
    } else {
        
        throw "Could not read the SupplyMap file";
        
    }
	 
}