?? evengridlayout.java
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package com.well.www.user.xanthian.java.layouts;import java.util.*;import com.well.www.user.xanthian.java.structures.*;import com.well.www.user.xanthian.java.tools.*;import com.well.www.user.xanthian.java.ui.*;public class EvenGridLayout{ public static void layout ( double cities[][], int cityX, int cityY, double width, double height ) { double radius = Math.min ( height, width ) / 2.0D; int numCities = cities.length; TravellerStatus.setCircumference( 8.0D * radius ); int N = 1; int derivedN = N * N; while (derivedN < numCities ) { N++; derivedN = N * N; } int naturalProblemSize = N; double x_span = width; double x_step = x_span / ( naturalProblemSize - 1 ); double y_span = height; double y_step = y_span / ( naturalProblemSize - 1 ); double step = Math.min( x_step, y_step ); if ( ( numCities % 2 ) == 0 ) { TravellerStatus.setExactSolution( step * ( (double) numCities ) ); } else { TravellerStatus.setExactSolution ( ( step * ( (double) ( numCities - 1 ) ) ) + step * Math.sqrt( 2.0D ) ); } int currentCityNumber = 0; for (int i = 0; i < naturalProblemSize; i++) { for (int j = 0; j < naturalProblemSize; j++) { if ( currentCityNumber < numCities ) { cities[currentCityNumber][cityX] = step * (double)i; cities[currentCityNumber][cityY] = step * (double)j; } currentCityNumber++; } } TravellerStatus.setExactSolutionIsKnown( true ); PerturbLayout.layout( cities, cityX, cityY, width, height ); }}?? 快捷鍵說明
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