Circle.java

gehe zur Dokumentation dieser Datei

package de.lathanda.eos.geo;
 
import de.lathanda.eos.base.Picture;
import de.lathanda.eos.base.layout.BalancePoint;
import de.lathanda.eos.base.layout.BoundingBox;
import de.lathanda.eos.base.layout.Transform;
 
public class Circle extends FilledFigure {
    private double radius;
    public Circle() {
        super();
        radius = 10;
    }
    @Override
    protected void drawObject(Picture p) {
        p.drawEllipse(radius, radius);
    }  
    @Override
    protected void scaleInternal(double factor) {
        radius *= factor;
    }
    public void setRadius(double radius) {
        this.radius = radius;
        fireLayoutChanged();
    }
    public double getRadius() {
        return radius;
    }
    public void setCenter(double x, double y) {
        moveTo(x,y);
    }
    public void setCenterX(double x) {
        setX(x);
    }
    public double getCenterX() {
        return getX();
    }
    public void setCenterY(double y) {
        setY(y);
    }
    public double getCenterY() {
        return getY();
    } 
 
    @Override
    protected BalancePoint getBalancePoint() {
        return new BalancePoint(radius*radius*Math.PI, getX(), getY()); 
    }
 
    @Override
    protected BoundingBox calculateBoundingBox(Transform base, Transform own) {
        Transform t = base.transform(own);
        double r = t.transform(radius);
        return new BoundingBox(t.getdx() - r, t.getdx() + r, t.getdy() - r, t.getdy() + r);
    }
}