CSC 418/2504 Fall 2001: Code for A2 Q4

• For pre-filtering, you will have to clip the polygon against each of the pixels. I wrote some code to check question 3 of assignment 1, which clips a polygon against a rectangle:
  • clip.cpp : code
  • clip.bat : batch file for MS-DOS
  • test.dat : input file. Note that the program doesn't handle vertical clipping lines with x=0 correctly, so I nudged it a bit.
• For supersampling, replace each point in the middle of a pixel with four points, and count how many of the four fall inside the polygon.
  
  Code to test if a point is inside a polygon is available from last year's assignments: point-in-polygon.c