#!/usr/bin/env python3
from lyz_bezmisc import *
from lyz_ffgeom import *
def maxdist(xxx_todo_changeme):
((p0x,p0y),(p1x,p1y),(p2x,p2y),(p3x,p3y)) = xxx_todo_changeme
p0 = Point(p0x,p0y)
p1 = Point(p1x,p1y)
p2 = Point(p2x,p2y)
p3 = Point(p3x,p3y)
s1 = Segment(p0,p3)
return max(s1.distanceToPoint(p1),s1.distanceToPoint(p2))
def cspsubdiv(csp,flat):
for sp in csp:
subdiv(sp,flat)
def subdiv(sp,flat,i=1):
while i < len(sp):
p0 = sp[i-1][1]
p1 = sp[i-1][2]
p2 = sp[i][0]
p3 = sp[i][1]
b = (p0,p1,p2,p3)
m = maxdist(b)
if m <= flat:
i += 1
else:
one, two = beziersplitatt(b,0.5)
sp[i-1][2] = one[1]
sp[i][0] = two[2]
p = [one[2],one[3],two[1]]
sp[i:1] = [p]
