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package qtrees;
import java.io.IOException;
import java.io.Writer;
/**
* Representation of a node in a QTree
* @author Sjaak Smetsers
* @author Camil Staps, s4498062
*
* Note: the version by Sjaak Smetsers contained a sameLeaf method. This seems to be redundant though, so I removed it.
*/
public abstract class QTNode {
protected boolean boolean_value;
protected String string_value;
/**
* Fill a (part of a) bitmap with this node
* In the template this was an abstract method. However, then we would use
* essentially the same code in BlackLeaf and WhiteLeaf. Using a concrete
* function here that depends on static properties is much more flexible. In
* GreyNode we still override this function.
* @param x the x coordinate of the top left corner
* @param y the y coordinate of the top left corner
* @param width the width of the part of the bitmap to fill
* @param bitmap the bitmap to fill
*/
public void fillBitmap( int x, int y, int width, Bitmap bitmap ) {
int old_x = x, old_y = y;
for (; x < old_x + width; x++)
for (y = old_y; y < old_y + width; y++)
bitmap.setBit(x, y, boolean_value);
}
/**
* Write a node as bitstream
* In the template this was an abstract method. However, then we would use
* essentially the same code in BlackLeaf and WhiteLeaf. Using a concrete
* function here that depends on static properties is much more flexible. In
* GreyNode we still override this function.
* @param out Writer to write to
* @throws IOException is passed on from Writer
*/
public void writeNode( Writer out ) throws IOException {
out.write("0" + string_value);
}
/**
* Fill a complete area of a bitmap with a particular value
* @param x the x coordinate of the top left corner
* @param y the y coordinate of the top left corner
* @param width the width (and height) of the area to fill
* @param bitmap the bitmap to fill
* @param val the value to fill the area with
*/
public static void fillArea( int x, int y, int width, Bitmap bitmap, boolean val ){
for (int i = 0; i < width; i++) {
for (int j = 0; j < width; j++) {
bitmap.setBit(x+i, y+j, val);
}
}
}
}
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