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import java.util.BitSet;
public class Grid {
int width;
int height;
int maxVertex;
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public int abscissaOfVertex(int vertex) {
return vertex % width;
}
public int ordinateOfVertex(int vertex) {
return vertex / width;
}
private int vertexOfCoordinate(int abscissa, int ordinate) {
return ordinate * width + abscissa;
}
public Grid(int width, int height) {
this.width = width;
this.height = height;
maxVertex = width * height - 1;
graph = new Graph(maxVertex);
for (int i = 0; i < width; i++) {
for (int j = 0; j < height; j++) {
if (i < width - 1)
graph.addEdge(new Edge(
vertexOfCoordinate(i,j),
vertexOfCoordinate(i+1,j),
0.0
));
if (j < height - 1)
graph.addEdge(new Edge(
vertexOfCoordinate(i,j),
vertexOfCoordinate(i,j+1),
0.0
));
}
}
}
public boolean isHorizontal(Edge e) {
return Math.abs(e.source - e.dest) == 1;
}
public boolean isVertical(Edge e) {
return Math.abs(e.source - e.dest) == width;
}
private void drawLine(int h, BitSet right) {
for (int i = 0; i < width - 1; i++) {
System.out.print("o");
if (right.get(vertexOfCoordinate(i,h))) System.out.print("--");
else System.out.print(" ");
}
System.out.println("o");
}
private void drawInterline(int h, BitSet up) {
for (int i = 0; i < width; i++) {
if (up.get(vertexOfCoordinate(i,h))) System.out.print("|");
else System.out.print(" ");
if (i < width-1) System.out.print(" ");
}
System.out.println();
}
public void drawSubgrid(Iterable<Edge> edges) {
BitSet up = new BitSet(maxVertex);
BitSet right = new BitSet(maxVertex);
for (Edge e : edges) {
// System.out.println(e.fromVertex + " -- " + e.toVertex);
if (isHorizontal(e))
right.set(Math.min(e.source,e.dest));
if (isVertical(e))
up.set(Math.min(e.source,e.dest));
}
for (int j = 0; j < height; j++) {
drawLine(j,right);
if (j < height - 1) drawInterline(j,up);
}
}
}