def from_seeds(self, seeds, curve='cos'):
if curve=='lin': cur = 0
elif curve=='cos': cur = 1
else: raise ValueError('Curve must be lin or cos')
ns = len(seeds)
d = 256/ns
r = 256%ns
ds = []
for i in xrange(ns):
if i+1<=r: ds.append(d+1)
else: ds.append(d)
gen = []
for i in xrange(ns):
for j in xrange(ds[i]):
h = utils.pblend(seeds[i-1][0], seeds[i][0], (j/float(ds[i])), cur)
s = utils.pblend(seeds[i-1][1], seeds[i][1], (j/float(ds[i])), cur)
v = utils.pblend(seeds[i-1][2], seeds[i][2], (j/float(ds[i])), cur)
gen.append(hsv2rgb((h,s,v)))
self.data = numpy.array(gen, dtype=numpy.uint8)
def from_seed(self, seed, csplit=0, split=30, dist=64, curve='lin'):
(h,l,s) = rgb2hls(seed)
split /= 360.0
csplit /= 360.0
comp = hls2rgb((h+csplit+0.5,l,s))
lspl = hls2rgb((h-split,l,s))
rspl = hls2rgb((h+split,l,s))
if curve=='lin': cur = 0
elif curve=='cos': cur = 1
else: raise ValueError('Curve must be lin or cos')
#from 0 (compliment) to dist (left split)
gen = []
for i in xrange(dist):
r = utils.pblend(comp[0], lspl[0], (i/float(dist)), cur)
g = utils.pblend(comp[1], lspl[1], (i/float(dist)), cur)
b = utils.pblend(comp[2], lspl[2], (i/float(dist)), cur)
gen.append((r, g, b))
#from dist to 128 (seed)
for i in xrange(128-dist):
r = utils.pblend(lspl[0], seed[0], (i/float(128-dist)), cur)
g = utils.pblend(lspl[1], seed[1], (i/float(128-dist)), cur)
b = utils.pblend(lspl[2], seed[2], (i/float(128-dist)), cur)
gen.append((r, g, b))
#from 127 to 255-dist
for i in xrange(128-dist):
r = utils.pblend(seed[0], rspl[0], (i/float(128-dist)), cur)
g = utils.pblend(seed[1], rspl[1], (i/float(128-dist)), cur)
b = utils.pblend(seed[2], rspl[2], (i/float(128-dist)), cur)
gen.append((r, g, b))
#from 255-dist to 255
for i in xrange(dist):
r = utils.pblend(rspl[0], comp[0], (i/float(dist)), cur)
g = utils.pblend(rspl[1], comp[1], (i/float(dist)), cur)
b = utils.pblend(rspl[2], comp[2], (i/float(dist)), cur)
gen.append((r, g, b))
self.data = numpy.array(gen, dtype=numpy.uint8)