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- # Source Generated with Decompyle++
- # File: in.pyc (Python 2.4)
-
- from math import pi, log, sin, sqrt
- import string
- EPSILON = 1e-010
-
- def linear(middle, pos):
- if pos <= middle:
- if middle < EPSILON:
- return 0.0
- else:
- return 0.5 * pos / middle
- else:
- pos = pos - middle
- middle = 1.0 - middle
- if middle < EPSILON:
- return 1.0
- else:
- return 0.5 + 0.5 * pos / middle
-
-
- def curved(middle, pos):
- return pos ** (log(0.5) / log(max(middle, EPSILON)))
-
-
- def sine(middle, pos):
- return (sin(-pi / 2.0 + pi * linear(middle, pos)) + 1.0) / 2.0
-
-
- def sphere_increasing(middle, pos):
- return sqrt(1.0 - (linear(middle, pos) - 1.0) ** 2)
-
-
- def sphere_decreasing(middle, pos):
- return 1.0 - sqrt(1.0 - linear(middle, pos) ** 2)
-
- SEGMENTS = [
- linear,
- curved,
- sine,
- sphere_increasing,
- sphere_decreasing]
-
- class GradientFile:
- gradient = None
-
- def getpalette(self, entries = 256):
- palette = []
- ix = 0
- (x0, x1, xm, rgb0, rgb1, segment) = self.gradient[ix]
- for i in range(entries):
- x = i / float(entries - 1)
- while x1 < x:
- ix = ix + 1
- (x0, x1, xm, rgb0, rgb1, segment) = self.gradient[ix]
- w = x1 - x0
- if w < EPSILON:
- scale = segment(0.5, 0.5)
- else:
- scale = segment((xm - x0) / w, (x - x0) / w)
- r = chr(int(255 * ((rgb1[0] - rgb0[0]) * scale + rgb0[0]) + 0.5))
- g = chr(int(255 * ((rgb1[1] - rgb0[1]) * scale + rgb0[1]) + 0.5))
- b = chr(int(255 * ((rgb1[2] - rgb0[2]) * scale + rgb0[2]) + 0.5))
- a = chr(int(255 * ((rgb1[3] - rgb0[3]) * scale + rgb0[3]) + 0.5))
- palette.append(r + g + b + a)
-
- return (string.join(palette, ''), 'RGBA')
-
-
-
- class GimpGradientFile(GradientFile):
-
- def __init__(self, fp):
- if fp.readline()[:13] != 'GIMP Gradient':
- raise SyntaxError, 'not a GIMP gradient file'
-
- count = int(fp.readline())
- gradient = []
- for i in range(count):
- s = string.split(fp.readline())
- w = map(float, s[:11])
- x0 = w[0]
- x1 = w[2]
- xm = w[1]
- rgb0 = w[3:7]
- rgb1 = w[7:11]
- segment = SEGMENTS[int(s[11])]
- cspace = int(s[12])
- if cspace != 0:
- raise IOError, 'cannot handle HSV colour space'
-
- gradient.append((x0, x1, xm, rgb0, rgb1, segment))
-
- self.gradient = gradient
-
-
-