Square.java

gehe zur Dokumentation dieser Datei

package de.lathanda.eos.geo;
 
import de.lathanda.eos.base.layout.BalancePoint;
 
import de.lathanda.eos.base.Picture;
import de.lathanda.eos.base.layout.BoundingBox;
import de.lathanda.eos.base.layout.Transform;
 
public class Square extends FilledFigure {
    protected double side;
    public Square() {
        super();
        side  = 20;
    }
 
    @Override
    protected void drawObject(Picture p) {
        p.drawRect(side, side);
    }
    @Override
    protected void scaleInternal(double factor) {
        side *= factor;
    }
 
    public void setSide(double side) {
        this.side = side;
        fireLayoutChanged();
    }
    public double getSide() {
        return side;
    }
 
    public void setLeftTop(double left, double top) {
        moveTo(left + side/2, top - side/2);
    }
    public void setRightBottom(double right, double bottom) {
        moveTo(right - side/2, bottom + side/2);
    }
    @Override
    protected BalancePoint getBalancePoint() {
        return new BalancePoint(side*side, getX(), getY());
    }
    @Override
    protected BoundingBox calculateBoundingBox(Transform base, Transform own) {
        Transform t = base.transform(own);
        BoundingBox bound = new BoundingBox();
        bound.add(t.transform(+ side / 2, + side / 2));
        bound.add(t.transform(- side / 2, + side / 2));
        bound.add(t.transform(- side / 2, - side / 2));
        bound.add(t.transform(+ side / 2, - side / 2));       
        return bound;
    }      
}