blender/io_mspgl/util.py

   1 import os
   2
   3 def linear_to_srgb(l):
   4         if l<0.0031308:
   5                 return 12.92*l
   6         else:
   7                 return 1.055*(l**(1/2.4))-0.055
   8
   9 def get_colormap(srgb):
  10         if srgb:
  11                 return linear_to_srgb
  12         else:
  13                 return lambda x: x
  14
  15 def make_unique(values):
  16         seen = set()
  17         result = []
  18         for i in values:
  19                 if i not in seen:
  20                         result.append(i)
  21                         seen.add(i)
  22         return result
  23
  24 def get_linked_node_and_socket(node_tree, socket):
  25         for l in node_tree.links:
  26                 if socket==l.to_socket:
  27                         return (l.from_node, l.from_socket)
  28                 elif socket==l.from_socket:
  29                         return (l.to_node, l.to_socket)
  30         return (None, None)
  31
  32 def compute_bounding_sphere(points):
  33         p1 = max(((p, p.length) for p in points), key=lambda x:x[1])[0]
  34         p2 = max(((p, (p-p1).length) for p in points), key=lambda x:x[1])[0]
  35         center = (p1+p2)/2
  36         radius = (p1-p2).length/2
  37         for p in points:
  38                 d = p-center
  39                 if d.length>radius:
  40                         center += d*(1-radius/d.length)/2
  41                         radius = (radius+d.length)/2
  42
  43         return center, radius