Xiaolin Wu's line algorithm: Difference between revisions

Revision as of 12:53, 19 September 2005

Revision as of 12:29, 12 October 2005

Line 22:

dy = y2 - y1

gradient = dy / dx

''// handle first endpoint''

xend = round(x1)

Line 32:

plot(xpxl1, ypxl1 + 1, fpart(yend) * xgap)

intery = yend + gradient ''// first y-intersection for the main loop''

''// handle second endpoint''

xend = round(x2)

Line 41:

plot(xpxl2, ypxl2, rfpart(yend) * xgap)

plot(xpxl2, ypxl2 + 1, fpart(yend) * xgap)

''// main loop''

'''for''' x '''from''' xpxl1 + 1 '''to''' xpxl2 - 1 {