PyIgnition

https://github.com/animatinator/PyIgnition update for Python 3
Clone: git clone https://git.frombelow.net/PyIgnition.git
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keyframes.py (2034B)

      1 ### EXESOFT PYIGNITION ###
      2 # Copyright David Barker 2010
      3 #
      4 # Keyframe object and generic keyframe creation function
      5 
      6 
      7 from constants import *
      8 
      9 
     10 def CreateKeyframe(parentframes, frame, variables):
     11 	newframe = Keyframe(frame, variables)
     12 	
     13 	# Look for duplicate keyframes and copy other defined variables
     14 	try:
     15 		oldkey = (keyframe for keyframe in parentframes if keyframe.frame == frame).__next__()
     16 	except StopIteration:
     17 		oldkey = None
     18 	
     19 	if oldkey != None:
     20 		for var in oldkey.variables.keys():  # For every variable defined by the old keyframe
     21 			if (var not in newframe.variables or newframe.variables[var] == None) and (oldkey.variables[var] != None):  # If a variable is undefined, copy its value to the new keyframe
     22 				newframe.variables[var] = oldkey.variables[var]
     23 	
     24 	# Remove the duplicate keyframe, if it existed
     25 	for duplicate in (keyframe for keyframe in parentframes if keyframe.frame == frame):
     26 		parentframes.remove(duplicate)
     27 		break
     28 	
     29 	# Append the new keyframe then sort them all by frame
     30 	parentframes.append(newframe)
     31 	sortedframes = sorted(parentframes, key=lambda keyframe: keyframe.frame)
     32 	parentframes[:] = sortedframes
     33 	
     34 	return newframe  # Return a reference to the new keyframe, in case it's needed
     35 
     36 def ConsolidateKeyframes(parentframes, frame, variables):
     37 	newframe = Keyframe(frame, variables)
     38 	parentframes.append(newframe)
     39 	
     40 	finallist = []  # A truncated list of keyframes
     41 	
     42 	# Append all the frames which come after the current one to the final list
     43 	for keyframe in parentframes:
     44 		if keyframe.frame >= frame:
     45 			finallist.append(keyframe)
     46 	
     47 	# Sort the keyframes and give them to the parent object
     48 	sortedframes = sorted(finallist, key=lambda keyframe: keyframe.frame)
     49 	parentframes[:] = sortedframes
     50 
     51 class Keyframe:
     52 	def __init__(self, frame = 0, variables = {}):
     53 		self.frame = frame
     54 		self.variables = variables
     55 		
     56 		if not ('interpolationtype' in self.variables):
     57 			self.variables['interpolationtype'] = INTERPOLATIONTYPE_LINEAR
     58