package Triangle;

import java.awt.*;           // For Graphics, etc.
import java.awt.geom.*;      // For Ellipse2D, etc.


public class Triangle extends Polygon {
    
    private double offsetx,offsety; 
    private double length;
    
    
    public Triangle( double x0, double y0, // center of the triangle
		     double length  // length of edges
		     ){
	
	super();
	
	this.length = length+4;
	
	double x1 = x0;
	double y1 = y0 - 0.5774*length;
	double x2 = x0 - length/2;
	double y2 = y0 + 0.2887*length;
	double x3 = x0 + length/2;
	double y3 = y2;
	
	offsetx = x2;
	offsety = y2;
	
	this.addPoint((int)x1, (int)y1);
	this.addPoint((int)x2, (int)y2);
	this.addPoint((int)x3, (int)y3); 
    }
    
    
    public double getOffsetX(){
	return offsetx;
    }
    
    public double getOffsetY(){
	return offsety;
    }

    public double getLength(){
	return length;
    }

    // Instance methods:
    public void draw( Graphics g ) {
        g.drawPolygon( this );
    }
    public void fill( Graphics g ) {
        g.fillPolygon( this );
    } 
}