Computer Science 252
Problem Solving with Java
Spring 2015, The College of Saint Rose
SpiralLines Demo
A working demo of SpiralLines will appear below. Click inside the applet to interact with it.
SpiralLines BlueJ Project
Click here to download a BlueJ project for SpiralLines.
SpiralLines Source Code
The Java source code for SpiralLines is below. Click on a file name to download it.
import objectdraw.*;
/*
* This program draws a "Spiral of Lines". When the mouse is pressed
* then dragged, a series of lines are drawn from the press point to
* the current location.
*
* Jim Teresco, Siena College, CSCI 120, Spring 2011
* Based on similar example from Williams College CS 134.
* Updated for CSC 252, The College of Saint Rose, Fall 2013, Spring 2015
*
* $Id: Spirograph.java 2218 2013-10-18 14:06:39Z terescoj $
*/
public class SpiralLines extends WindowController {
// First coordinate of a line segment
private Location linesStart;
/*
* When the mouse is pressed, save the press point to be used as
* the first endpoint of the lines drawn during dragging
*/
public void onMousePress(Location point) {
linesStart = point;
}
/*
* As the user is dragging, draw a line from
* initial point where mouse pressed to current point.
*/
public void onMouseDrag(Location point) {
new Line(linesStart, point, canvas);
}
}