Computer Graphics (CS 311) Assignment 1

DUE DATE: Monday April 6

LINES: One Pixel At A Time

• Implement Bresenham's Line Algorithm in a Python/Java/C++ program and display the results in a graphics window. Begin by saving HW1.py or HW1.java or HW1.cpp to your account. The commments in the code should be self-explanatory.

  Your program MUST conform to the following specifications:

  • A text file specified on the command line (i.e. python HW1.py myfile in Python, java HW1 myfile in Java or HW1 myfile in C++) is opened and endpoints are read in from this file. The format for this file MUST be

               X1 Y1 X2 Y2
               X1 Y1 X2 Y2
                ...
    

    where each row is an (integer-valued) initial and terminal point for a line segment. The file will have an unspecified number of lines.
  • Each line in the file is either drawn, or a warning is printed that one or both of the endpoints are out of range of the window and the line is not drawn. In a later assignment you will learn how to "clip" line segments to a window. Your program should work for all lines in all quadrants with the endpoints specified in any order. If you look carefully at the code you will see that the origin has been placed in the center of the window and extends from -400 to 400. Don't change these dimensions.
  • Please do not add extra "features" to your code.
• Grades will be determined in 2 parts:
  1. Submit your code with the hsp program; for more information, visit HSP. Alternatively, you can drag and drop it into the Courses/s09/cs/cs311-00-s09/Student Work subdirectory with your name on it.
  2. Sign up for an appointment with me to meet in the lab to discuss and demonstrate your work.