@Override
public boolean contains(GridPoint referencePoint, GridPoint targetPoint) {
return this.relativeLocations.contains(
new GridPoint(
targetPoint.getColumn() - referencePoint.getColumn(),
targetPoint.getRow() - referencePoint.getRow()));
}
@Override
public Set<GridPoint> getAllAffectedLocations(GridPoint referencePoint) {
Set<GridPoint> results = new HashSet<GridPoint>();
for (GridPoint relativeLocation : this.relativeLocations) {
int x = referencePoint.getColumn() + relativeLocation.getColumn();
int y = referencePoint.getRow() + relativeLocation.getRow();
if (this.grid.isInBounds(x, y)) {
results.add(new GridPoint(x, y));
}
}
return results;
}
/**
* Returns the {@link VisualVertex} at the specified {@link GridPoint}.
*
* @param gridPoint the GridPoint of the VisualVertex to return
* @return the VisualVertex at the specified GridPoint or <code>null</code> if the GridPoint is
* empty
*/
public VisualVertex getVisualVertexAtGridPoint(GridPoint gridPoint) {
// Early negative return if specified GridPoint is invalid
if (!Validation.isValidGridPoint(
gridPoint, this.horizontalGridPoints, this.verticalGridPoints)) {
return null;
}
// Get VisualVertex at specified GridPoint
VisualVertex visualVertex = this.grid[gridPoint.getPositionX()][gridPoint.getPositionY()];
return visualVertex;
}
public GridPoint[] adjacentPoints(GridPoint point, boolean cornersCount) {
GridPoint[] allPoints = point.adjacentPoints(cornersCount);
GridPoint[] adjPoints = new GridPoint[allPoints.length];
int numInGrid = 0;
for (int p = 0; p < allPoints.length; ++p) {
if (this.contains(allPoints[p])) {
adjPoints[numInGrid++] = allPoints[p];
}
}
return Arrays.copyOf(adjPoints, numInGrid);
}
/**
* Removes the {@link VisualVertex} from the specified {@link GridPoint} on the Grid.
*
* @param gridPoint The GridPoint from which the VisualVertex will be removed
* @return <code>true</code> if a VisualVertex was removed from this GridPoint on the Grid, <code>
* false</code> otherwise
*/
boolean removeVisualVertexAtGridPoint(GridPoint gridPoint) {
// Early negative return if specified GridPoint is invalid
if (!Validation.isValidGridPoint(
gridPoint, this.horizontalGridPoints, this.verticalGridPoints)) {
return false;
}
// Get VisualVertex at specified GridPoint
VisualVertex visualVertex = this.grid[gridPoint.getPositionX()][gridPoint.getPositionY()];
// Return false if GridPoint is empty
if (visualVertex == null) {
return false;
}
// Remove VisualVertex
this.grid[gridPoint.getPositionX()][gridPoint.getPositionY()] = null;
return true;
}
