// AddSeg.java

// Command class to add a Segment object to the drawing.

// Written by THC for CS 5 HW 3.  Modified by Scot Drysdale
// for Vornoi Tool.

import java.awt.*;

public class AddSeg extends Command
{
	private Segment currentSeg = null;	  //  Segment currently being constructed
  
	// When the mouse is pressed, remember its position, create a new Segment with
	// coincident endpoints, and add the new Segment to the front of the drawing.
	public void executeClick(Point p, Drawing dwg)
	{
		if(currentSeg == null)		// First point of pair?
		{
			currentSeg = new Segment(p, p);
			dwg.setTempShape(currentSeg);
		}
		else  // Second point, so add segment to drawing
		{
			currentSeg.setEndpoint2(p);
			dwg.add(currentSeg);
			currentSeg = null;
			dwg.setTempShape(null);
		}
	}
	
	// Update the segment currently being added
	public void executeMove(Point p, Drawing dwg)
	{
		if(currentSeg != null)
			currentSeg.setEndpoint2(p);
	}
}