josch/lego-parts-generator
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do rounding before any other calculation

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josch 2014-09-11 14:20:50 +02:00
parent 756c47a453
commit 430d1c0266
1 changed files with 4 additions and 4 deletions
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8
normalize.py
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@ -61,13 +61,16 @@ def handle_file(fname,lines,triangles,quads):
print("unknown line type: %s"%t[0], file=sys.stderr)
exit(1)
# we round to six digits and add zero to avoid printing a negative zero
def normalize_l(c,x1,y1,z1,x2,y2,z2):
x1,y1,z1,x2,y2,z2 = [round(t,6)+0 for t in x1,y1,z1,x2,y2,z2]
if (x1,y1,z1) < (x2,y2,z2):
return (c,x1,y1,z1,x2,y2,z2)
else:
return (c,x2,y2,z2,x1,y1,z1)
def normalize_t(c,x1,y1,z1,x2,y2,z2,x3,y3,z3):
x1,y1,z1,x2,y2,z2,x3,y3,z3 = [round(t,6)+0 for t in x1,y1,z1,x2,y2,z2,x3,y3,z3]
# since winding order does not matter, we just sort
pts = sorted([(x1,y1,z1),(x2,y2,z2),(x3,y3,z3)])
x1,y1,z1,x2,y2,z2,x3,y3,z3 = itertools.chain.from_iterable(pts)
@ -79,6 +82,7 @@ def rotate(cycle):
return cycle[smallest_idx:]+cycle[:smallest_idx]
def normalize_q(c,x1,y1,z1,x2,y2,z2,x3,y3,z3,x4,y4,z4):
x1,y1,z1,x2,y2,z2,x3,y3,z3,x4,y4,z4 = [round(t,6)+0 for t in x1,y1,z1,x2,y2,z2,x3,y3,z3,x4,y4,z4]
# rotate the smallest coordinate to the front
pts = rotate([(x1,y1,z1),(x2,y2,z2),(x3,y3,z3),(x4,y4,z4)])
# winding order does not matter, so deciding whether or not the next point
@ -99,13 +103,9 @@ if __name__ == '__main__':
quads = [ normalize_q(*x) for x in quads]
# now output the normalized values
with open(os.path.join(sys.argv[2],os.path.basename(sys.argv[1])), "w") as outfile:
# we round to six digits and add zero to avoid printing a negative zero
for c,x1,y1,z1,x2,y2,z2 in sorted(lines):
x1,y1,z1,x2,y2,z2 = [round(t,6)+0 for t in x1,y1,z1,x2,y2,z2]
outfile.write("2 %d %s %s %s %s %s %s\n"%(c,x1,y1,z1,x2,y2,z2))
for c,x1,y1,z1,x2,y2,z2,x3,y3,z3 in sorted(triangles):
x1,y1,z1,x2,y2,z2,x3,y3,z3 = [round(t,6)+0 for t in x1,y1,z1,x2,y2,z2,x3,y3,z3]
outfile.write("3 %d %s %s %s %s %s %s %s %s %s\n"%(c,x1,y1,z1,x2,y2,z2,x3,y3,z3))
for c,x1,y1,z1,x2,y2,z2,x3,y3,z3,x4,y4,z4 in sorted(quads):
x1,y1,z1,x2,y2,z2,x3,y3,z3,x4,y4,z4 = [round(t,6)+0 for t in x1,y1,z1,x2,y2,z2,x3,y3,z3,x4,y4,z4]
outfile.write("4 %d %s %s %s %s %s %s %s %s %s %s %s %s\n"%(c,x1,y1,z1,x2,y2,z2,x3,y3,z3,x4,y4,z4))