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2015-07-11 16:56:43 -04:00 · 2015-07-11 16:56:43 -04:00 · 396d689932
parent 8a541bbddf
commit 396d689932
1 changed files with 1 additions and 0 deletions
--- a/pgfw/extension.py
+++ b/pgfw/extension.py
@ -59,6 +59,7 @@ def place_in_rect(rect, incoming, contain=True, *args):
            if not collides:
                break

+# from http://www.realtimerendering.com/resources/GraphicsGems/gemsii/xlines.c
 def get_intersection(p0, p1, p2, p3):
    x0, y0 = p0
    x1, y1 = p1