Xiaolin Wu's line algorithm: Difference between revisions

Revision as of 07:13, 7 April 2006

Revision as of 07:16, 7 April 2006

Line 8:

'''function''' plot(x, y, c) '''is'''

plot the pixel at (x, y) with brightness c (where 0 ≤ c ≤ 1)

'''function''' ipart(x) '''is'''

'''return''' ''integer part of x''

'''function''' round(x) '''is'''

'''return''' ipart(x + 0.5)

'''function''' fpart(x) '''is'''

'''return''' ''fractional part of x''

'''function''' rfpart(x) '''is'''

'''return''' 1 - fpart(x)

'''function''' drawLine(x1,y1,x2,y2) '''is'''

'''if''' x2 < x1

swap x1, x2

swap y1, y2

'''end if'''

dx = x2 - x1

dy = y2 - y1