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Family Day update

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This commit is contained in:
Ingy döt Net 2020-02-17 23:21:07 -08:00
parent aac6731f2c
commit 9ad63ea473
2442 changed files with 39761 additions and 8255 deletions
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7
Task/Xiaolin-Wus-line-algorithm/Python/xiaolin-wus-line-algorithm.py
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@ -28,7 +28,8 @@ def putpixel(img, xy, color, alpha=1):
def draw_line(img, p1, p2, color):
"""Draws an anti-aliased line in img from p1 to p2 with the given color."""
x1, y1, x2, y2 = p1 + p2
x1, y1 = p1
x2, y2 = p2
dx, dy = x2-x1, y2-y1
steep = abs(dx) < abs(dy)
p = lambda px, py: ((px,py), (py,px))[steep]
@ -46,8 +47,8 @@ def draw_line(img, p1, p2, color):
yend = y + grad * (xend - x)
xgap = _rfpart(x + 0.5)
px, py = int(xend), int(yend)
putpixel(img, (px, py), color, _rfpart(yend) * xgap)
putpixel(img, (px, py+1), color, _fpart(yend) * xgap)
putpixel(img, p(px, py), color, _rfpart(yend) * xgap)
putpixel(img, p(px, py+1), color, _fpart(yend) * xgap)
return px
xstart = draw_endpoint(p(*p1)) + 1