/**
 * A program which allows you to draw continuous lines
 * on the screen; program chooses a new color
 * for the user every time they begin a new scribble
 */

import objectdraw.*;
import java.awt.*;

public class Scribble extends WindowController 
{
	// first endpoint of next line segment
	private	Location nextLineStarts;
	
	// allows for selection of random r, g, b values
	private RandomIntGenerator colorPicker;
	
	// the current color for drawing
	private Color currentColor;
	
	// create a generator of r, g, b values
	public void begin(){
		colorPicker = new RandomIntGenerator(0, 255);
	}
	
	/** save the starting endpoint of the first line
	 *  and set the current color when the mouse is clicked
	 */
	public void onMousePress(Location point){
	
		// select random r, g, b values
		int redness = colorPicker.nextValue();
		int greenness = colorPicker.nextValue();
		int blueness = colorPicker.nextValue();
		
		// create a new color from them
		currentColor = new Color(redness, greenness, blueness);
		
		// save the starting point of the first line to be drawn
		nextLineStarts = point;
		
	}
	
	/** draw lines as the user drags the mouse about
	 */
	public void onMouseDrag(Location point){
		new Line(nextLineStarts, point, canvas).setColor(currentColor);
		nextLineStarts = point;
	}  
}